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remove grpc from thirdparty

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This commit is contained in:
Bassem Girgis
2019-01-02 03:57:58 -06:00
parent a9f5cb7043
commit 6858c3d40b
310 changed files with 0 additions and 29803 deletions
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linx64/include/grpc++/alarm.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/// An Alarm posts the user provided tag to its associated completion queue upon
/// expiry or cancellation.
#ifndef GRPCXX_ALARM_H
#define GRPCXX_ALARM_H
#include <grpc++/impl/codegen/completion_queue.h>
#include <grpc++/impl/codegen/completion_queue_tag.h>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc++/impl/codegen/time.h>
#include <grpc++/impl/grpc_library.h>
#include <grpc/grpc.h>
struct grpc_alarm;
namespace grpc {
class CompletionQueue;
/// A thin wrapper around \a grpc_alarm (see / \a / src/core/surface/alarm.h).
class Alarm : private GrpcLibraryCodegen {
public:
/// Create a completion queue alarm instance associated to \a cq.
///
/// Once the alarm expires (at \a deadline) or it's cancelled (see \a Cancel),
/// an event with tag \a tag will be added to \a cq. If the alarm expired, the
/// event's success bit will be true, false otherwise (ie, upon cancellation).
/// \internal We rely on the presence of \a cq for grpc initialization. If \a
/// cq were ever to be removed, a reference to a static
/// internal::GrpcLibraryInitializer instance would need to be introduced
/// here. \endinternal.
template <typename T>
Alarm(CompletionQueue* cq, const T& deadline, void* tag)
: tag_(tag),
alarm_(grpc_alarm_create(cq->cq(), TimePoint<T>(deadline).raw_time(),
static_cast<void*>(&tag_))) {}
/// Alarms aren't copyable.
Alarm(const Alarm&) = delete;
Alarm& operator=(const Alarm&) = delete;
/// Alarms are movable.
Alarm(Alarm&& rhs) : tag_(rhs.tag_), alarm_(rhs.alarm_) {
rhs.alarm_ = nullptr;
}
Alarm& operator=(Alarm&& rhs) {
tag_ = rhs.tag_;
alarm_ = rhs.alarm_;
rhs.alarm_ = nullptr;
return *this;
}
/// Destroy the given completion queue alarm, cancelling it in the process.
~Alarm() {
if (alarm_ != nullptr) grpc_alarm_destroy(alarm_);
}
/// Cancel a completion queue alarm. Calling this function over an alarm that
/// has already fired has no effect.
void Cancel() { grpc_alarm_cancel(alarm_); }
private:
class AlarmEntry : public CompletionQueueTag {
public:
AlarmEntry(void* tag) : tag_(tag) {}
bool FinalizeResult(void** tag, bool* status) override {
*tag = tag_;
return true;
}
private:
void* tag_;
};
AlarmEntry tag_;
grpc_alarm* alarm_; // owned
};
} // namespace grpc
#endif // GRPCXX_ALARM_H

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linx64/include/grpc++/channel.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_CHANNEL_H
#define GRPCXX_CHANNEL_H
#include <memory>
#include <grpc++/impl/call.h>
#include <grpc++/impl/codegen/channel_interface.h>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc/grpc.h>
struct grpc_channel;
namespace grpc {
/// Channels represent a connection to an endpoint. Created by \a CreateChannel.
class Channel final : public ChannelInterface,
public CallHook,
public std::enable_shared_from_this<Channel>,
private GrpcLibraryCodegen {
public:
~Channel();
/// Get the current channel state. If the channel is in IDLE and
/// \a try_to_connect is set to true, try to connect.
grpc_connectivity_state GetState(bool try_to_connect) override;
/// Returns the LB policy name, or the empty string if not yet available.
grpc::string GetLoadBalancingPolicyName() const;
/// Returns the service config in JSON form, or the empty string if
/// not available.
grpc::string GetServiceConfigJSON() const;
private:
template <class InputMessage, class OutputMessage>
friend Status BlockingUnaryCall(ChannelInterface* channel,
const RpcMethod& method,
ClientContext* context,
const InputMessage& request,
OutputMessage* result);
friend std::shared_ptr<Channel> CreateChannelInternal(
const grpc::string& host, grpc_channel* c_channel);
Channel(const grpc::string& host, grpc_channel* c_channel);
Call CreateCall(const RpcMethod& method, ClientContext* context,
CompletionQueue* cq) override;
void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override;
void* RegisterMethod(const char* method) override;
void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline, CompletionQueue* cq,
void* tag) override;
bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline) override;
const grpc::string host_;
grpc_channel* const c_channel_; // owned
};
} // namespace grpc
#endif // GRPCXX_CHANNEL_H

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linx64/include/grpc++/client_context.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/// A ClientContext allows the person implementing a service client to:
///
/// - Add custom metadata key-value pairs that will propagated to the server
/// side.
/// - Control call settings such as compression and authentication.
/// - Initial and trailing metadata coming from the server.
/// - Get performance metrics (ie, census).
///
/// Context settings are only relevant to the call they are invoked with, that
/// is to say, they aren't sticky. Some of these settings, such as the
/// compression options, can be made persistant at channel construction time
/// (see \a grpc::CreateCustomChannel).
///
/// \warning ClientContext instances should \em not be reused across rpcs.
#ifndef GRPCXX_CLIENT_CONTEXT_H
#define GRPCXX_CLIENT_CONTEXT_H
#include <grpc++/impl/codegen/client_context.h>
#endif // GRPCXX_CLIENT_CONTEXT_H

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linx64/include/grpc++/completion_queue.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_COMPLETION_QUEUE_H
#define GRPCXX_COMPLETION_QUEUE_H
#include <grpc++/impl/codegen/completion_queue.h>
#endif // GRPCXX_COMPLETION_QUEUE_H

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linx64/include/grpc++/create_channel.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_CREATE_CHANNEL_H
#define GRPCXX_CREATE_CHANNEL_H
#include <memory>
#include <grpc++/channel.h>
#include <grpc++/security/credentials.h>
#include <grpc++/support/channel_arguments.h>
#include <grpc++/support/config.h>
namespace grpc {
/// Create a new \a Channel pointing to \a target.
///
/// \param target The URI of the endpoint to connect to.
/// \param creds Credentials to use for the created channel. If it does not
/// hold an object or is invalid, a lame channel (one on which all operations
/// fail) is returned.
std::shared_ptr<Channel> CreateChannel(
const grpc::string& target,
const std::shared_ptr<ChannelCredentials>& creds);
/// Create a new \em custom \a Channel pointing to \a target.
///
/// \warning For advanced use and testing ONLY. Override default channel
/// arguments only if necessary.
///
/// \param target The URI of the endpoint to connect to.
/// \param creds Credentials to use for the created channel. If it does not
/// hold an object or is invalid, a lame channel (one on which all operations
/// fail) is returned.
/// \param args Options for channel creation.
std::shared_ptr<Channel> CreateCustomChannel(
const grpc::string& target,
const std::shared_ptr<ChannelCredentials>& creds,
const ChannelArguments& args);
} // namespace grpc
#endif // GRPCXX_CREATE_CHANNEL_H

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linx64/include/grpc++/create_channel_posix.h
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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_CREATE_CHANNEL_POSIX_H
#define GRPCXX_CREATE_CHANNEL_POSIX_H
#include <memory>
#include <grpc++/channel.h>
#include <grpc++/support/channel_arguments.h>
#include <grpc/support/port_platform.h>
namespace grpc {
#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
/// Create a new \a Channel communicating over the given file descriptor.
///
/// \param target The name of the target.
/// \param fd The file descriptor representing a socket.
std::shared_ptr<Channel> CreateInsecureChannelFromFd(const grpc::string& target,
int fd);
/// Create a new \a Channel communicating over given file descriptor with custom
/// channel arguments.
///
/// \param target The name of the target.
/// \param fd The file descriptor representing a socket.
/// \param args Options for channel creation.
std::shared_ptr<Channel> CreateCustomInsecureChannelFromFd(
const grpc::string& target, int fd, const ChannelArguments& args);
#endif // GPR_SUPPORT_CHANNELS_FROM_FD
} // namespace grpc
#endif // GRPCXX_CREATE_CHANNEL_POSIX_H

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linx64/include/grpc++/ext/health_check_service_server_builder_option.h
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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
#define GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
#include <memory>
#include <grpc++/health_check_service_interface.h>
#include <grpc++/impl/server_builder_option.h>
#include <grpc++/support/config.h>
namespace grpc {
class HealthCheckServiceServerBuilderOption : public ServerBuilderOption {
public:
/// The ownership of \a hc will be taken and transferred to the grpc server.
/// To explicitly disable default service, pass in a nullptr.
explicit HealthCheckServiceServerBuilderOption(
std::unique_ptr<HealthCheckServiceInterface> hc);
~HealthCheckServiceServerBuilderOption() override {}
void UpdateArguments(ChannelArguments* args) override;
void UpdatePlugins(
std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) override;
private:
std::unique_ptr<HealthCheckServiceInterface> hc_;
};
} // namespace grpc
#endif // GRPCXX_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H

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linx64/include/grpc++/ext/proto_server_reflection_plugin.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_EXT_PROTO_SERVER_REFLECTION_PLUGIN_H
#define GRPCXX_EXT_PROTO_SERVER_REFLECTION_PLUGIN_H
#include <grpc++/impl/server_builder_plugin.h>
#include <grpc++/support/config.h>
namespace grpc {
class ServerInitializer;
class ProtoServerReflection;
} // namespace grpc
namespace grpc {
namespace reflection {
class ProtoServerReflectionPlugin : public ::grpc::ServerBuilderPlugin {
public:
ProtoServerReflectionPlugin();
::grpc::string name() override;
void InitServer(::grpc::ServerInitializer* si) override;
void Finish(::grpc::ServerInitializer* si) override;
void ChangeArguments(const ::grpc::string& name, void* value) override;
bool has_async_methods() const override;
bool has_sync_methods() const override;
private:
std::shared_ptr<grpc::ProtoServerReflection> reflection_service_;
};
/// Add proto reflection plugin to \a ServerBuilder.
/// This function should be called at the static initialization time.
void InitProtoReflectionServerBuilderPlugin();
} // namespace reflection
} // namespace grpc
#endif // GRPCXX_EXT_PROTO_SERVER_REFLECTION_PLUGIN_H

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linx64/include/grpc++/generic/async_generic_service.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H
#define GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H
#include <grpc++/support/async_stream.h>
#include <grpc++/support/byte_buffer.h>
struct grpc_server;
namespace grpc {
typedef ServerAsyncReaderWriter<ByteBuffer, ByteBuffer>
GenericServerAsyncReaderWriter;
class GenericServerContext final : public ServerContext {
public:
const grpc::string& method() const { return method_; }
const grpc::string& host() const { return host_; }
private:
friend class Server;
friend class ServerInterface;
grpc::string method_;
grpc::string host_;
};
class AsyncGenericService final {
public:
AsyncGenericService() : server_(nullptr) {}
void RequestCall(GenericServerContext* ctx,
GenericServerAsyncReaderWriter* reader_writer,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag);
private:
friend class Server;
Server* server_;
};
} // namespace grpc
#endif // GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H

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linx64/include/grpc++/generic/generic_stub.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_GENERIC_GENERIC_STUB_H
#define GRPCXX_GENERIC_GENERIC_STUB_H
#include <grpc++/support/async_stream.h>
#include <grpc++/support/byte_buffer.h>
namespace grpc {
class CompletionQueue;
typedef ClientAsyncReaderWriter<ByteBuffer, ByteBuffer>
GenericClientAsyncReaderWriter;
/// Generic stubs provide a type-unsafe interface to call gRPC methods
/// by name.
class GenericStub final {
public:
explicit GenericStub(std::shared_ptr<ChannelInterface> channel)
: channel_(channel) {}
/// Begin a call to a named method \a method using \a context.
/// A tag \a tag will be delivered to \a cq when the call has been started
/// (i.e, initial metadata has been sent).
/// The return value only indicates whether or not registration of the call
/// succeeded (i.e. the call won't proceed if the return value is nullptr).
std::unique_ptr<GenericClientAsyncReaderWriter> Call(
ClientContext* context, const grpc::string& method, CompletionQueue* cq,
void* tag);
private:
std::shared_ptr<ChannelInterface> channel_;
};
} // namespace grpc
#endif // GRPCXX_GENERIC_GENERIC_STUB_H

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linx64/include/grpc++/grpc++.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/// \mainpage gRPC C++ API
///
/// The gRPC C++ API mainly consists of the following classes:
/// <br>
/// - grpc::Channel, which represents the connection to an endpoint. See [the
/// gRPC Concepts page](https://grpc.io/docs/guides/concepts.html) for more
/// details. Channels are created by the factory function grpc::CreateChannel.
///
/// - grpc::CompletionQueue, the producer-consumer queue used for all
/// asynchronous communication with the gRPC runtime.
///
/// - grpc::ClientContext and grpc::ServerContext, where optional configuration
/// for an RPC can be set, such as setting custom metadata to be conveyed to the
/// peer, compression settings, authentication, etc.
///
/// - grpc::Server, representing a gRPC server, created by grpc::ServerBuilder.
///
/// Streaming calls are handled with the streaming classes in
/// \ref sync_stream.h and
/// \ref async_stream.h.
///
/// Refer to the
/// [examples](https://github.com/grpc/grpc/blob/master/examples/cpp)
/// for code putting these pieces into play.
#ifndef GRPCXX_GRPCXX_H
#define GRPCXX_GRPCXX_H
// Pragma for http://include-what-you-use.org/ tool, tells that following
// headers are not private for grpc++.h and are part of its interface.
// IWYU pragma: begin_exports
#include <grpc/grpc.h>
#include <grpc++/channel.h>
#include <grpc++/client_context.h>
#include <grpc++/completion_queue.h>
#include <grpc++/create_channel.h>
#include <grpc++/create_channel_posix.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc++/server_context.h>
#include <grpc++/server_posix.h>
// IWYU pragma: end_exports
namespace grpc {
/// Return gRPC library version.
grpc::string Version();
} // namespace grpc
#endif // GRPCXX_GRPCXX_H

54
linx64/include/grpc++/health_check_service_interface.h
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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
#define GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H
#include <grpc++/support/config.h>
namespace grpc {
const char kHealthCheckServiceInterfaceArg[] =
"grpc.health_check_service_interface";
/// The gRPC server uses this interface to expose the health checking service
/// without depending on protobuf.
class HealthCheckServiceInterface {
public:
virtual ~HealthCheckServiceInterface() {}
/// Set or change the serving status of the given \a service_name.
virtual void SetServingStatus(const grpc::string& service_name,
bool serving) = 0;
/// Apply to all registered service names.
virtual void SetServingStatus(bool serving) = 0;
};
/// Enable/disable the default health checking service. This applies to all C++
/// servers created afterwards. For each server, user can override the default
/// with a HealthCheckServiceServerBuilderOption.
/// NOT thread safe.
void EnableDefaultHealthCheckService(bool enable);
/// Returns whether the default health checking service is enabled.
/// NOT thread safe.
bool DefaultHealthCheckServiceEnabled();
} // namespace grpc
#endif // GRPCXX_HEALTH_CHECK_SERVICE_INTERFACE_H

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linx64/include/grpc++/impl/call.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CALL_H
#define GRPCXX_IMPL_CALL_H
#include <grpc++/impl/codegen/call.h>
#endif // GRPCXX_IMPL_CALL_H

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linx64/include/grpc++/impl/channel_argument_option.h
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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CHANNEL_ARGUMENT_OPTION_H
#define GRPCXX_IMPL_CHANNEL_ARGUMENT_OPTION_H
#include <map>
#include <memory>
#include <grpc++/impl/server_builder_option.h>
#include <grpc++/support/channel_arguments.h>
namespace grpc {
std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
const grpc::string &name, const grpc::string &value);
std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
const grpc::string &name, int value);
} // namespace grpc
#endif // GRPCXX_IMPL_CHANNEL_ARGUMENT_OPTION_H

24
linx64/include/grpc++/impl/client_unary_call.h
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CLIENT_UNARY_CALL_H
#define GRPCXX_IMPL_CLIENT_UNARY_CALL_H
#include <grpc++/impl/codegen/client_unary_call.h>
#endif // GRPCXX_IMPL_CLIENT_UNARY_CALL_H

941
linx64/include/grpc++/impl/codegen/async_stream.h
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@@ -1,941 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_ASYNC_STREAM_H
#define GRPCXX_IMPL_CODEGEN_ASYNC_STREAM_H
#include <grpc++/impl/codegen/call.h>
#include <grpc++/impl/codegen/channel_interface.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/server_context.h>
#include <grpc++/impl/codegen/service_type.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
class CompletionQueue;
/// Common interface for all client side asynchronous streaming.
class ClientAsyncStreamingInterface {
public:
virtual ~ClientAsyncStreamingInterface() {}
/// Request notification of the reading of the initial metadata. Completion
/// will be notified by \a tag on the associated completion queue.
/// This call is optional, but if it is used, it cannot be used concurrently
/// with or after the \a AsyncReaderInterface::Read method.
///
/// \param[in] tag Tag identifying this request.
virtual void ReadInitialMetadata(void* tag) = 0;
/// Indicate that the stream is to be finished and request notification for
/// when the call has been ended.
/// Should not be used concurrently with other operations.
///
/// It is appropriate to call this method when both:
/// * the client side has no more message to send
/// (this can be declared implicitly by calling this method, or
/// explicitly through an earlier call to the <i>WritesDone</i> method
/// of the class in use, e.g. \a ClientAsyncWriterInterface::WritesDone or
/// \a ClientAsyncReaderWriterInterface::WritesDone).
/// * there are no more messages to be received from the server (this can
/// be known implicitly by the calling code, or explicitly from an
/// earlier call to \a AsyncReaderInterface::Read that yielded a failed
/// result, e.g. cq->Next(&read_tag, &ok) filled in 'ok' with 'false').
///
/// This function will return when either:
/// - all incoming messages have been read and the server has returned
/// a status.
/// - the server has returned a non-OK status.
/// - the call failed for some reason and the library generated a
/// status.
///
/// Note that implementations of this method attempt to receive initial
/// metadata from the server if initial metadata hasn't yet been received.
///
/// \param[in] tag Tag identifying this request.
/// \param[out] status To be updated with the operation status.
virtual void Finish(Status* status, void* tag) = 0;
};
/// An interface that yields a sequence of messages of type \a R.
template <class R>
class AsyncReaderInterface {
public:
virtual ~AsyncReaderInterface() {}
/// Read a message of type \a R into \a msg. Completion will be notified by \a
/// tag on the associated completion queue.
/// This is thread-safe with respect to \a Write or \a WritesDone methods. It
/// should not be called concurrently with other streaming APIs
/// on the same stream. It is not meaningful to call it concurrently
/// with another \a AsyncReaderInterface::Read on the same stream since reads
/// on the same stream are delivered in order.
///
/// \param[out] msg Where to eventually store the read message.
/// \param[in] tag The tag identifying the operation.
///
/// Side effect: note that this method attempt to receive initial metadata for
/// a stream if it hasn't yet been received.
virtual void Read(R* msg, void* tag) = 0;
};
/// An interface that can be fed a sequence of messages of type \a W.
template <class W>
class AsyncWriterInterface {
public:
virtual ~AsyncWriterInterface() {}
/// Request the writing of \a msg with identifying tag \a tag.
///
/// Only one write may be outstanding at any given time. This means that
/// after calling Write, one must wait to receive \a tag from the completion
/// queue BEFORE calling Write again.
/// This is thread-safe with respect to \a AsyncReaderInterface::Read
///
/// \param[in] msg The message to be written.
/// \param[in] tag The tag identifying the operation.
virtual void Write(const W& msg, void* tag) = 0;
/// Request the writing of \a msg using WriteOptions \a options with
/// identifying tag \a tag.
///
/// Only one write may be outstanding at any given time. This means that
/// after calling Write, one must wait to receive \a tag from the completion
/// queue BEFORE calling Write again.
/// WriteOptions \a options is used to set the write options of this message.
/// This is thread-safe with respect to \a AsyncReaderInterface::Read
///
/// \param[in] msg The message to be written.
/// \param[in] options The WriteOptions to be used to write this message.
/// \param[in] tag The tag identifying the operation.
virtual void Write(const W& msg, WriteOptions options, void* tag) = 0;
/// Request the writing of \a msg and coalesce it with the writing
/// of trailing metadata, using WriteOptions \a options with
/// identifying tag \a tag.
///
/// For client, WriteLast is equivalent of performing Write and
/// WritesDone in a single step.
/// For server, WriteLast buffers the \a msg. The writing of \a msg is held
/// until Finish is called, where \a msg and trailing metadata are coalesced
/// and write is initiated. Note that WriteLast can only buffer \a msg up to
/// the flow control window size. If \a msg size is larger than the window
/// size, it will be sent on wire without buffering.
///
/// \param[in] msg The message to be written.
/// \param[in] options The WriteOptions to be used to write this message.
/// \param[in] tag The tag identifying the operation.
void WriteLast(const W& msg, WriteOptions options, void* tag) {
Write(msg, options.set_last_message(), tag);
}
};
template <class R>
class ClientAsyncReaderInterface : public ClientAsyncStreamingInterface,
public AsyncReaderInterface<R> {};
/// Async client-side API for doing server-streaming RPCs,
/// where the incoming message stream coming from the server has
/// messages of type \a R.
template <class R>
class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
public:
/// Create a stream and write the first request out.
/// \a tag will be notified on \a cq when the call has been started and
/// \a request has been written out.
/// Note that \a context will be used to fill in custom initial metadata
/// used to send to the server when starting the call.
template <class W>
static ClientAsyncReader* Create(ChannelInterface* channel,
CompletionQueue* cq, const RpcMethod& method,
ClientContext* context, const W& request,
void* tag) {
Call call = channel->CreateCall(method, context, cq);
return new (g_core_codegen_interface->grpc_call_arena_alloc(
call.call(), sizeof(ClientAsyncReader)))
ClientAsyncReader(call, context, request, tag);
}
// always allocated against a call arena, no memory free required
static void operator delete(void* ptr, std::size_t size) {
assert(size == sizeof(ClientAsyncReader));
}
/// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata
/// method for semantics.
///
/// Side effect:
/// - upon receiving initial metadata from the server,
/// the \a ClientContext associated with this call is updated, and the
/// calling code can access the received metadata through the
/// \a ClientContext.
void ReadInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
meta_ops_.set_output_tag(tag);
meta_ops_.RecvInitialMetadata(context_);
call_.PerformOps(&meta_ops_);
}
void Read(R* msg, void* tag) override {
read_ops_.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
read_ops_.RecvInitialMetadata(context_);
}
read_ops_.RecvMessage(msg);
call_.PerformOps(&read_ops_);
}
/// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
///
/// Side effect:
/// - the \a ClientContext associated with this call is updated with
/// possible initial and trailing metadata received from the server.
void Finish(Status* status, void* tag) override {
finish_ops_.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
finish_ops_.RecvInitialMetadata(context_);
}
finish_ops_.ClientRecvStatus(context_, status);
call_.PerformOps(&finish_ops_);
}
private:
template <class W>
ClientAsyncReader(Call call, ClientContext* context, const W& request,
void* tag)
: context_(context), call_(call) {
init_ops_.set_output_tag(tag);
init_ops_.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
init_ops_.ClientSendClose();
call_.PerformOps(&init_ops_);
}
ClientContext* context_;
Call call_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
init_ops_;
CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_;
};
/// Common interface for client side asynchronous writing.
template <class W>
class ClientAsyncWriterInterface : public ClientAsyncStreamingInterface,
public AsyncWriterInterface<W> {
public:
/// Signal the client is done with the writes (half-close the client stream).
/// Thread-safe with respect to \a AsyncReaderInterface::Read
///
/// \param[in] tag The tag identifying the operation.
virtual void WritesDone(void* tag) = 0;
};
/// Async API on the client side for doing client-streaming RPCs,
/// where the outgoing message stream going to the server contains
/// messages of type \a W.
template <class W>
class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
public:
/// Create a stream and write the first request out.
/// \a tag will be notified on \a cq when the call has been started (i.e.
/// intitial metadata sent) and \a request has been written out.
/// Note that \a context will be used to fill in custom initial metadata
/// used to send to the server when starting the call.
/// \a response will be filled in with the single expected response
/// message from the server upon a successful call to the \a Finish
/// method of this instance.
template <class R>
static ClientAsyncWriter* Create(ChannelInterface* channel,
CompletionQueue* cq, const RpcMethod& method,
ClientContext* context, R* response,
void* tag) {
Call call = channel->CreateCall(method, context, cq);
return new (g_core_codegen_interface->grpc_call_arena_alloc(
call.call(), sizeof(ClientAsyncWriter)))
ClientAsyncWriter(call, context, response, tag);
}
// always allocated against a call arena, no memory free required
static void operator delete(void* ptr, std::size_t size) {
assert(size == sizeof(ClientAsyncWriter));
}
/// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method for
/// semantics.
///
/// Side effect:
/// - upon receiving initial metadata from the server, the \a ClientContext
/// associated with this call is updated, and the calling code can access
/// the received metadata through the \a ClientContext.
void ReadInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
meta_ops_.set_output_tag(tag);
meta_ops_.RecvInitialMetadata(context_);
call_.PerformOps(&meta_ops_);
}
void Write(const W& msg, void* tag) override {
write_ops_.set_output_tag(tag);
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
call_.PerformOps(&write_ops_);
}
void Write(const W& msg, WriteOptions options, void* tag) override {
write_ops_.set_output_tag(tag);
if (options.is_last_message()) {
options.set_buffer_hint();
write_ops_.ClientSendClose();
}
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
call_.PerformOps(&write_ops_);
}
void WritesDone(void* tag) override {
write_ops_.set_output_tag(tag);
write_ops_.ClientSendClose();
call_.PerformOps(&write_ops_);
}
/// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
///
/// Side effect:
/// - the \a ClientContext associated with this call is updated with
/// possible initial and trailing metadata received from the server.
/// - attempts to fill in the \a response parameter passed to this class's
/// constructor with the server's response message.
void Finish(Status* status, void* tag) override {
finish_ops_.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
finish_ops_.RecvInitialMetadata(context_);
}
finish_ops_.ClientRecvStatus(context_, status);
call_.PerformOps(&finish_ops_);
}
private:
template <class R>
ClientAsyncWriter(Call call, ClientContext* context, R* response, void* tag)
: context_(context), call_(call) {
finish_ops_.RecvMessage(response);
finish_ops_.AllowNoMessage();
// if corked bit is set in context, we buffer up the initial metadata to
// coalesce with later message to be sent. No op is performed.
if (context_->initial_metadata_corked_) {
write_ops_.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
} else {
write_ops_.set_output_tag(tag);
write_ops_.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
call_.PerformOps(&write_ops_);
}
}
ClientContext* context_;
Call call_;
CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
write_ops_;
CallOpSet<CallOpRecvInitialMetadata, CallOpGenericRecvMessage,
CallOpClientRecvStatus>
finish_ops_;
};
/// Async client-side interface for bi-directional streaming,
/// where the client-to-server message stream has messages of type \a W,
/// and the server-to-client message stream has messages of type \a R.
template <class W, class R>
class ClientAsyncReaderWriterInterface : public ClientAsyncStreamingInterface,
public AsyncWriterInterface<W>,
public AsyncReaderInterface<R> {
public:
/// Signal the client is done with the writes (half-close the client stream).
/// Thread-safe with respect to \a AsyncReaderInterface::Read
///
/// \param[in] tag The tag identifying the operation.
virtual void WritesDone(void* tag) = 0;
};
/// Async client-side interface for bi-directional streaming,
/// where the outgoing message stream going to the server
/// has messages of type \a W, and the incoming message stream coming
/// from the server has messages of type \a R.
template <class W, class R>
class ClientAsyncReaderWriter final
: public ClientAsyncReaderWriterInterface<W, R> {
public:
/// Create a stream and write the first request out.
/// \a tag will be notified on \a cq when the call has been started (i.e.
/// intitial metadata sent).
/// Note that \a context will be used to fill in custom initial metadata
/// used to send to the server when starting the call.
static ClientAsyncReaderWriter* Create(ChannelInterface* channel,
CompletionQueue* cq,
const RpcMethod& method,
ClientContext* context, void* tag) {
Call call = channel->CreateCall(method, context, cq);
return new (g_core_codegen_interface->grpc_call_arena_alloc(
call.call(), sizeof(ClientAsyncReaderWriter)))
ClientAsyncReaderWriter(call, context, tag);
}
// always allocated against a call arena, no memory free required
static void operator delete(void* ptr, std::size_t size) {
assert(size == sizeof(ClientAsyncReaderWriter));
}
/// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method
/// for semantics of this method.
///
/// Side effect:
/// - upon receiving initial metadata from the server, the \a ClientContext
/// is updated with it, and then the receiving initial metadata can
/// be accessed through this \a ClientContext.
void ReadInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
meta_ops_.set_output_tag(tag);
meta_ops_.RecvInitialMetadata(context_);
call_.PerformOps(&meta_ops_);
}
void Read(R* msg, void* tag) override {
read_ops_.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
read_ops_.RecvInitialMetadata(context_);
}
read_ops_.RecvMessage(msg);
call_.PerformOps(&read_ops_);
}
void Write(const W& msg, void* tag) override {
write_ops_.set_output_tag(tag);
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
call_.PerformOps(&write_ops_);
}
void Write(const W& msg, WriteOptions options, void* tag) override {
write_ops_.set_output_tag(tag);
if (options.is_last_message()) {
options.set_buffer_hint();
write_ops_.ClientSendClose();
}
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
call_.PerformOps(&write_ops_);
}
void WritesDone(void* tag) override {
write_ops_.set_output_tag(tag);
write_ops_.ClientSendClose();
call_.PerformOps(&write_ops_);
}
/// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
/// Side effect
/// - the \a ClientContext associated with this call is updated with
/// possible initial and trailing metadata sent from the server.
void Finish(Status* status, void* tag) override {
finish_ops_.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
finish_ops_.RecvInitialMetadata(context_);
}
finish_ops_.ClientRecvStatus(context_, status);
call_.PerformOps(&finish_ops_);
}
private:
ClientAsyncReaderWriter(Call call, ClientContext* context, void* tag)
: context_(context), call_(call) {
if (context_->initial_metadata_corked_) {
// if corked bit is set in context, we buffer up the initial metadata to
// coalesce with later message to be sent. No op is performed.
write_ops_.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
} else {
write_ops_.set_output_tag(tag);
write_ops_.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
call_.PerformOps(&write_ops_);
}
}
ClientContext* context_;
Call call_;
CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
write_ops_;
CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_;
};
template <class W, class R>
class ServerAsyncReaderInterface : public ServerAsyncStreamingInterface,
public AsyncReaderInterface<R> {
public:
/// Indicate that the stream is to be finished with a certain status code
/// and also send out \a msg response to the client.
/// Request notification for when the server has sent the response and the
/// appropriate signals to the client to end the call.
/// Should not be used concurrently with other operations.
///
/// It is appropriate to call this method when:
/// * all messages from the client have been received (either known
/// implictly, or explicitly because a previous
/// \a AsyncReaderInterface::Read operation with a non-ok result,
/// e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false').
///
/// This operation will end when the server has finished sending out initial
/// metadata (if not sent already), response message, and status, or if
/// some failure occurred when trying to do so.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of this call.
/// \param[in] msg To be sent to the client as the response for this call.
virtual void Finish(const W& msg, const Status& status, void* tag) = 0;
/// Indicate that the stream is to be finished with a certain
/// non-OK status code.
/// Request notification for when the server has sent the appropriate
/// signals to the client to end the call.
/// Should not be used concurrently with other operations.
///
/// This call is meant to end the call with some error, and can be called at
/// any point that the server would like to "fail" the call (though note
/// this shouldn't be called concurrently with any other "sending" call, like
/// \a AsyncWriterInterface::Write).
///
/// This operation will end when the server has finished sending out initial
/// metadata (if not sent already), and status, or if some failure occurred
/// when trying to do so.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of this call.
/// - Note: \a status must have a non-OK code.
virtual void FinishWithError(const Status& status, void* tag) = 0;
};
/// Async server-side API for doing client-streaming RPCs,
/// where the incoming message stream from the client has messages of type \a R,
/// and the single response message sent from the server is type \a W.
template <class W, class R>
class ServerAsyncReader final : public ServerAsyncReaderInterface<W, R> {
public:
explicit ServerAsyncReader(ServerContext* ctx)
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
/// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
///
/// Implicit input parameter:
/// - The initial metadata that will be sent to the client from this op will
/// be taken from the \a ServerContext associated with the call.
void SendInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
meta_ops_.set_output_tag(tag);
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
meta_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_.PerformOps(&meta_ops_);
}
void Read(R* msg, void* tag) override {
read_ops_.set_output_tag(tag);
read_ops_.RecvMessage(msg);
call_.PerformOps(&read_ops_);
}
/// See the \a ServerAsyncReaderInterface.Read method for semantics
///
/// Side effect:
/// - also sends initial metadata if not alreay sent.
/// - uses the \a ServerContext associated with this call to send possible
/// initial and trailing metadata.
///
/// Note: \a msg is not sent if \a status has a non-OK code.
void Finish(const W& msg, const Status& status, void* tag) override {
finish_ops_.set_output_tag(tag);
if (!ctx_->sent_initial_metadata_) {
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
finish_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
// The response is dropped if the status is not OK.
if (status.ok()) {
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_,
finish_ops_.SendMessage(msg));
} else {
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
}
call_.PerformOps(&finish_ops_);
}
/// See the \a ServerAsyncReaderInterface.Read method for semantics
///
/// Side effect:
/// - also sends initial metadata if not alreay sent.
/// - uses the \a ServerContext associated with this call to send possible
/// initial and trailing metadata.
void FinishWithError(const Status& status, void* tag) override {
GPR_CODEGEN_ASSERT(!status.ok());
finish_ops_.set_output_tag(tag);
if (!ctx_->sent_initial_metadata_) {
finish_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
finish_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&finish_ops_);
}
private:
void BindCall(Call* call) override { call_ = *call; }
Call call_;
ServerContext* ctx_;
CallOpSet<CallOpSendInitialMetadata> meta_ops_;
CallOpSet<CallOpRecvMessage<R>> read_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
finish_ops_;
};
template <class W>
class ServerAsyncWriterInterface : public ServerAsyncStreamingInterface,
public AsyncWriterInterface<W> {
public:
/// Indicate that the stream is to be finished with a certain status code.
/// Request notification for when the server has sent the appropriate
/// signals to the client to end the call.
/// Should not be used concurrently with other operations.
///
/// It is appropriate to call this method when either:
/// * all messages from the client have been received (either known
/// implictly, or explicitly because a previous \a
/// AsyncReaderInterface::Read operation with a non-ok
/// result (e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false'.
/// * it is desired to end the call early with some non-OK status code.
///
/// This operation will end when the server has finished sending out initial
/// metadata (if not sent already), response message, and status, or if
/// some failure occurred when trying to do so.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of this call.
virtual void Finish(const Status& status, void* tag) = 0;
/// Request the writing of \a msg and coalesce it with trailing metadata which
/// contains \a status, using WriteOptions options with
/// identifying tag \a tag.
///
/// WriteAndFinish is equivalent of performing WriteLast and Finish
/// in a single step.
///
/// \param[in] msg The message to be written.
/// \param[in] options The WriteOptions to be used to write this message.
/// \param[in] status The Status that server returns to client.
/// \param[in] tag The tag identifying the operation.
virtual void WriteAndFinish(const W& msg, WriteOptions options,
const Status& status, void* tag) = 0;
};
/// Async server-side API for doing server streaming RPCs,
/// where the outgoing message stream from the server has messages of type \a W.
template <class W>
class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
public:
explicit ServerAsyncWriter(ServerContext* ctx)
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
/// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
///
/// Implicit input parameter:
/// - The initial metadata that will be sent to the client from this op will
/// be taken from the \a ServerContext associated with the call.
///
/// \param[in] tag Tag identifying this request.
void SendInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
meta_ops_.set_output_tag(tag);
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
meta_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_.PerformOps(&meta_ops_);
}
void Write(const W& msg, void* tag) override {
write_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&write_ops_);
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
call_.PerformOps(&write_ops_);
}
void Write(const W& msg, WriteOptions options, void* tag) override {
write_ops_.set_output_tag(tag);
if (options.is_last_message()) {
options.set_buffer_hint();
}
EnsureInitialMetadataSent(&write_ops_);
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
call_.PerformOps(&write_ops_);
}
/// See the \a ServerAsyncWriterInterface.WriteAndFinish method for semantics.
///
/// Implicit input parameter:
/// - the \a ServerContext associated with this call is used
/// for sending trailing (and initial) metadata to the client.
///
/// Note: \a status must have an OK code.
void WriteAndFinish(const W& msg, WriteOptions options, const Status& status,
void* tag) override {
write_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&write_ops_);
options.set_buffer_hint();
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
write_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&write_ops_);
}
/// See the \a ServerAsyncWriterInterface.Finish method for semantics.
///
/// Implicit input parameter:
/// - the \a ServerContext associated with this call is used for sending
/// trailing (and initial if not already sent) metadata to the client.
///
/// Note: there are no restrictions are the code of
/// \a status,it may be non-OK
void Finish(const Status& status, void* tag) override {
finish_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&finish_ops_);
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&finish_ops_);
}
private:
void BindCall(Call* call) override { call_ = *call; }
template <class T>
void EnsureInitialMetadataSent(T* ops) {
if (!ctx_->sent_initial_metadata_) {
ops->SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ops->set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
}
Call call_;
ServerContext* ctx_;
CallOpSet<CallOpSendInitialMetadata> meta_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
write_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
};
/// Server-side interface for asynchronous bi-directional streaming.
template <class W, class R>
class ServerAsyncReaderWriterInterface : public ServerAsyncStreamingInterface,
public AsyncWriterInterface<W>,
public AsyncReaderInterface<R> {
public:
/// Indicate that the stream is to be finished with a certain status code.
/// Request notification for when the server has sent the appropriate
/// signals to the client to end the call.
/// Should not be used concurrently with other operations.
///
/// It is appropriate to call this method when either:
/// * all messages from the client have been received (either known
/// implictly, or explicitly because a previous \a
/// AsyncReaderInterface::Read operation
/// with a non-ok result (e.g., cq->Next(&read_tag, &ok) filled in 'ok'
/// with 'false'.
/// * it is desired to end the call early with some non-OK status code.
///
/// This operation will end when the server has finished sending out initial
/// metadata (if not sent already), response message, and status, or if some
/// failure occurred when trying to do so.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of this call.
virtual void Finish(const Status& status, void* tag) = 0;
/// Request the writing of \a msg and coalesce it with trailing metadata which
/// contains \a status, using WriteOptions options with
/// identifying tag \a tag.
///
/// WriteAndFinish is equivalent of performing WriteLast and Finish in a
/// single step.
///
/// \param[in] msg The message to be written.
/// \param[in] options The WriteOptions to be used to write this message.
/// \param[in] status The Status that server returns to client.
/// \param[in] tag The tag identifying the operation.
virtual void WriteAndFinish(const W& msg, WriteOptions options,
const Status& status, void* tag) = 0;
};
/// Async server-side API for doing bidirectional streaming RPCs,
/// where the incoming message stream coming from the client has messages of
/// type \a R, and the outgoing message stream coming from the server has
/// messages of type \a W.
template <class W, class R>
class ServerAsyncReaderWriter final
: public ServerAsyncReaderWriterInterface<W, R> {
public:
explicit ServerAsyncReaderWriter(ServerContext* ctx)
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
/// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
///
/// Implicit input parameter:
/// - The initial metadata that will be sent to the client from this op will
/// be taken from the \a ServerContext associated with the call.
///
/// \param[in] tag Tag identifying this request.
void SendInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
meta_ops_.set_output_tag(tag);
meta_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
meta_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_.PerformOps(&meta_ops_);
}
void Read(R* msg, void* tag) override {
read_ops_.set_output_tag(tag);
read_ops_.RecvMessage(msg);
call_.PerformOps(&read_ops_);
}
void Write(const W& msg, void* tag) override {
write_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&write_ops_);
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
call_.PerformOps(&write_ops_);
}
void Write(const W& msg, WriteOptions options, void* tag) override {
write_ops_.set_output_tag(tag);
if (options.is_last_message()) {
options.set_buffer_hint();
}
EnsureInitialMetadataSent(&write_ops_);
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
call_.PerformOps(&write_ops_);
}
/// See the \a ServerAsyncReaderWriterInterface.WriteAndFinish
/// method for semantics.
///
/// Implicit input parameter:
/// - the \a ServerContext associated with this call is used
/// for sending trailing (and initial) metadata to the client.
///
/// Note: \a status must have an OK code.
void WriteAndFinish(const W& msg, WriteOptions options, const Status& status,
void* tag) override {
write_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&write_ops_);
options.set_buffer_hint();
GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
write_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&write_ops_);
}
/// See the \a ServerAsyncReaderWriterInterface.Finish method for semantics.
///
/// Implicit input parameter:
/// - the \a ServerContext associated with this call is used for sending
/// trailing (and initial if not already sent) metadata to the client.
///
/// Note: there are no restrictions are the code of \a status,
/// it may be non-OK
void Finish(const Status& status, void* tag) override {
finish_ops_.set_output_tag(tag);
EnsureInitialMetadataSent(&finish_ops_);
finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&finish_ops_);
}
private:
friend class ::grpc::Server;
void BindCall(Call* call) override { call_ = *call; }
template <class T>
void EnsureInitialMetadataSent(T* ops) {
if (!ctx_->sent_initial_metadata_) {
ops->SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ops->set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
}
Call call_;
ServerContext* ctx_;
CallOpSet<CallOpSendInitialMetadata> meta_ops_;
CallOpSet<CallOpRecvMessage<R>> read_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
write_ops_;
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_ASYNC_STREAM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
#define GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
#include <assert.h>
#include <grpc++/impl/codegen/call.h>
#include <grpc++/impl/codegen/channel_interface.h>
#include <grpc++/impl/codegen/client_context.h>
#include <grpc++/impl/codegen/server_context.h>
#include <grpc++/impl/codegen/service_type.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
class CompletionQueue;
extern CoreCodegenInterface* g_core_codegen_interface;
/// An interface relevant for async client side unary RPCS (which send
/// one request message to a server and receive one response message).
template <class R>
class ClientAsyncResponseReaderInterface {
public:
virtual ~ClientAsyncResponseReaderInterface() {}
/// Request notification of the reading of initial metadata. Completion
/// will be notified by \a tag on the associated completion queue.
/// This call is optional, but if it is used, it cannot be used concurrently
/// with or after the \a Finish method.
///
/// \param[in] tag Tag identifying this request.
virtual void ReadInitialMetadata(void* tag) = 0;
/// Request to receive the server's response \a msg and final \a status for
/// the call, and to notify \a tag on this call's completion queue when
/// finished.
///
/// This function will return when either:
/// - when the server's response message and status have been received.
/// - when the server has returned a non-OK status (no message expected in
/// this case).
/// - when the call failed for some reason and the library generated a
/// non-OK status.
///
/// \param[in] tag Tag identifying this request.
/// \param[out] status To be updated with the operation status.
/// \param[out] msg To be filled in with the server's response message.
virtual void Finish(R* msg, Status* status, void* tag) = 0;
};
/// Async API for client-side unary RPCs, where the message response
/// received from the server is of type \a R.
template <class R>
class ClientAsyncResponseReader final
: public ClientAsyncResponseReaderInterface<R> {
public:
/// Start a call and write the request out.
/// \a tag will be notified on \a cq when the call has been started (i.e.
/// intitial metadata sent) and \a request has been written out.
/// Note that \a context will be used to fill in custom initial metadata
/// used to send to the server when starting the call.
template <class W>
static ClientAsyncResponseReader* Create(ChannelInterface* channel,
CompletionQueue* cq,
const RpcMethod& method,
ClientContext* context,
const W& request) {
Call call = channel->CreateCall(method, context, cq);
return new (g_core_codegen_interface->grpc_call_arena_alloc(
call.call(), sizeof(ClientAsyncResponseReader)))
ClientAsyncResponseReader(call, context, request);
}
// always allocated against a call arena, no memory free required
static void operator delete(void* ptr, std::size_t size) {
assert(size == sizeof(ClientAsyncResponseReader));
}
/// See \a ClientAsyncResponseReaderInterface::ReadInitialMetadata for
/// semantics.
///
/// Side effect:
/// - the \a ClientContext associated with this call is updated with
/// possible initial and trailing metadata sent from the server.
void ReadInitialMetadata(void* tag) {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
meta_buf.set_output_tag(tag);
meta_buf.RecvInitialMetadata(context_);
call_.PerformOps(&meta_buf);
}
/// See \a ClientAysncResponseReaderInterface::Finish for semantics.
///
/// Side effect:
/// - the \a ClientContext associated with this call is updated with
/// possible initial and trailing metadata sent from the server.
void Finish(R* msg, Status* status, void* tag) {
finish_buf.set_output_tag(tag);
if (!context_->initial_metadata_received_) {
finish_buf.RecvInitialMetadata(context_);
}
finish_buf.RecvMessage(msg);
finish_buf.AllowNoMessage();
finish_buf.ClientRecvStatus(context_, status);
call_.PerformOps(&finish_buf);
}
private:
ClientContext* const context_;
Call call_;
template <class W>
ClientAsyncResponseReader(Call call, ClientContext* context, const W& request)
: context_(context), call_(call) {
init_buf.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(init_buf.SendMessage(request).ok());
init_buf.ClientSendClose();
call_.PerformOps(&init_buf);
}
// disable operator new
static void* operator new(std::size_t size);
static void* operator new(std::size_t size, void* p) { return p; }
SneakyCallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpClientSendClose>
init_buf;
CallOpSet<CallOpRecvInitialMetadata> meta_buf;
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>,
CallOpClientRecvStatus>
finish_buf;
};
/// Async server-side API for handling unary calls, where the single
/// response message sent to the client is of type \a W.
template <class W>
class ServerAsyncResponseWriter final : public ServerAsyncStreamingInterface {
public:
explicit ServerAsyncResponseWriter(ServerContext* ctx)
: call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
/// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
///
/// Side effect:
/// The initial metadata that will be sent to the client from this op will
/// be taken from the \a ServerContext associated with the call.
///
/// \param[in] tag Tag identifying this request.
void SendInitialMetadata(void* tag) override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
meta_buf_.set_output_tag(tag);
meta_buf_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
meta_buf_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_.PerformOps(&meta_buf_);
}
/// Indicate that the stream is to be finished and request notification
/// when the server has sent the appropriate signals to the client to
/// end the call. Should not be used concurrently with other operations.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of the call.
/// \param[in] msg Message to be sent to the client.
///
/// Side effect:
/// - also sends initial metadata if not already sent (using the
/// \a ServerContext associated with this call).
///
/// Note: if \a status has a non-OK code, then \a msg will not be sent,
/// and the client will receive only the status with possible trailing
/// metadata.
void Finish(const W& msg, const Status& status, void* tag) {
finish_buf_.set_output_tag(tag);
if (!ctx_->sent_initial_metadata_) {
finish_buf_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
finish_buf_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
// The response is dropped if the status is not OK.
if (status.ok()) {
finish_buf_.ServerSendStatus(ctx_->trailing_metadata_,
finish_buf_.SendMessage(msg));
} else {
finish_buf_.ServerSendStatus(ctx_->trailing_metadata_, status);
}
call_.PerformOps(&finish_buf_);
}
/// Indicate that the stream is to be finished with a non-OK status,
/// and request notification for when the server has finished sending the
/// appropriate signals to the client to end the call.
/// Should not be used concurrently with other operations.
///
/// \param[in] tag Tag identifying this request.
/// \param[in] status To be sent to the client as the result of the call.
/// - Note: \a status must have a non-OK code.
///
/// Side effect:
/// - also sends initial metadata if not already sent (using the
/// \a ServerContext associated with this call).
void FinishWithError(const Status& status, void* tag) {
GPR_CODEGEN_ASSERT(!status.ok());
finish_buf_.set_output_tag(tag);
if (!ctx_->sent_initial_metadata_) {
finish_buf_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
finish_buf_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
finish_buf_.ServerSendStatus(ctx_->trailing_metadata_, status);
call_.PerformOps(&finish_buf_);
}
private:
void BindCall(Call* call) override { call_ = *call; }
Call call_;
ServerContext* ctx_;
CallOpSet<CallOpSendInitialMetadata> meta_buf_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
finish_buf_;
};
} // namespace grpc
namespace std {
template <class R>
class default_delete<grpc::ClientAsyncResponseReader<R>> {
public:
void operator()(void* p) {}
};
template <class R>
class default_delete<grpc::ClientAsyncResponseReaderInterface<R>> {
public:
void operator()(void* p) {}
};
}
#endif // GRPCXX_IMPL_CODEGEN_ASYNC_UNARY_CALL_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CALL_H
#define GRPCXX_IMPL_CODEGEN_CALL_H
#include <assert.h>
#include <cstring>
#include <functional>
#include <map>
#include <memory>
#include <grpc++/impl/codegen/call_hook.h>
#include <grpc++/impl/codegen/client_context.h>
#include <grpc++/impl/codegen/completion_queue_tag.h>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/serialization_traits.h>
#include <grpc++/impl/codegen/slice.h>
#include <grpc++/impl/codegen/status.h>
#include <grpc++/impl/codegen/string_ref.h>
#include <grpc/impl/codegen/atm.h>
#include <grpc/impl/codegen/compression_types.h>
#include <grpc/impl/codegen/grpc_types.h>
struct grpc_byte_buffer;
namespace grpc {
class ByteBuffer;
class Call;
class CallHook;
class CompletionQueue;
extern CoreCodegenInterface* g_core_codegen_interface;
const char kBinaryErrorDetailsKey[] = "grpc-status-details-bin";
// TODO(yangg) if the map is changed before we send, the pointers will be a
// mess. Make sure it does not happen.
inline grpc_metadata* FillMetadataArray(
const std::multimap<grpc::string, grpc::string>& metadata,
size_t* metadata_count, const grpc::string& optional_error_details) {
*metadata_count = metadata.size() + (optional_error_details.empty() ? 0 : 1);
if (*metadata_count == 0) {
return nullptr;
}
grpc_metadata* metadata_array =
(grpc_metadata*)(g_core_codegen_interface->gpr_malloc(
(*metadata_count) * sizeof(grpc_metadata)));
size_t i = 0;
for (auto iter = metadata.cbegin(); iter != metadata.cend(); ++iter, ++i) {
metadata_array[i].key = SliceReferencingString(iter->first);
metadata_array[i].value = SliceReferencingString(iter->second);
}
if (!optional_error_details.empty()) {
metadata_array[i].key =
g_core_codegen_interface->grpc_slice_from_static_buffer(
kBinaryErrorDetailsKey, sizeof(kBinaryErrorDetailsKey) - 1);
metadata_array[i].value = SliceReferencingString(optional_error_details);
}
return metadata_array;
}
/// Per-message write options.
class WriteOptions {
public:
WriteOptions() : flags_(0), last_message_(false) {}
WriteOptions(const WriteOptions& other)
: flags_(other.flags_), last_message_(other.last_message_) {}
/// Clear all flags.
inline void Clear() { flags_ = 0; }
/// Returns raw flags bitset.
inline uint32_t flags() const { return flags_; }
/// Sets flag for the disabling of compression for the next message write.
///
/// \sa GRPC_WRITE_NO_COMPRESS
inline WriteOptions& set_no_compression() {
SetBit(GRPC_WRITE_NO_COMPRESS);
return *this;
}
/// Clears flag for the disabling of compression for the next message write.
///
/// \sa GRPC_WRITE_NO_COMPRESS
inline WriteOptions& clear_no_compression() {
ClearBit(GRPC_WRITE_NO_COMPRESS);
return *this;
}
/// Get value for the flag indicating whether compression for the next
/// message write is forcefully disabled.
///
/// \sa GRPC_WRITE_NO_COMPRESS
inline bool get_no_compression() const {
return GetBit(GRPC_WRITE_NO_COMPRESS);
}
/// Sets flag indicating that the write may be buffered and need not go out on
/// the wire immediately.
///
/// \sa GRPC_WRITE_BUFFER_HINT
inline WriteOptions& set_buffer_hint() {
SetBit(GRPC_WRITE_BUFFER_HINT);
return *this;
}
/// Clears flag indicating that the write may be buffered and need not go out
/// on the wire immediately.
///
/// \sa GRPC_WRITE_BUFFER_HINT
inline WriteOptions& clear_buffer_hint() {
ClearBit(GRPC_WRITE_BUFFER_HINT);
return *this;
}
/// Get value for the flag indicating that the write may be buffered and need
/// not go out on the wire immediately.
///
/// \sa GRPC_WRITE_BUFFER_HINT
inline bool get_buffer_hint() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
/// corked bit: aliases set_buffer_hint currently, with the intent that
/// set_buffer_hint will be removed in the future
inline WriteOptions& set_corked() {
SetBit(GRPC_WRITE_BUFFER_HINT);
return *this;
}
inline WriteOptions& clear_corked() {
ClearBit(GRPC_WRITE_BUFFER_HINT);
return *this;
}
inline bool is_corked() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
/// last-message bit: indicates this is the last message in a stream
/// client-side: makes Write the equivalent of performing Write, WritesDone
/// in a single step
/// server-side: hold the Write until the service handler returns (sync api)
/// or until Finish is called (async api)
inline WriteOptions& set_last_message() {
last_message_ = true;
return *this;
}
/// Clears flag indicating that this is the last message in a stream,
/// disabling coalescing.
inline WriteOptions& clear_last_messsage() {
last_message_ = false;
return *this;
}
/// Get value for the flag indicating that this is the last message, and
/// should be coalesced with trailing metadata.
///
/// \sa GRPC_WRITE_LAST_MESSAGE
bool is_last_message() const { return last_message_; }
WriteOptions& operator=(const WriteOptions& rhs) {
flags_ = rhs.flags_;
return *this;
}
private:
void SetBit(const uint32_t mask) { flags_ |= mask; }
void ClearBit(const uint32_t mask) { flags_ &= ~mask; }
bool GetBit(const uint32_t mask) const { return (flags_ & mask) != 0; }
uint32_t flags_;
bool last_message_;
};
/// Default argument for CallOpSet. I is unused by the class, but can be
/// used for generating multiple names for the same thing.
template <int I>
class CallNoOp {
protected:
void AddOp(grpc_op* ops, size_t* nops) {}
void FinishOp(bool* status) {}
};
class CallOpSendInitialMetadata {
public:
CallOpSendInitialMetadata() : send_(false) {
maybe_compression_level_.is_set = false;
}
void SendInitialMetadata(
const std::multimap<grpc::string, grpc::string>& metadata,
uint32_t flags) {
maybe_compression_level_.is_set = false;
send_ = true;
flags_ = flags;
initial_metadata_ =
FillMetadataArray(metadata, &initial_metadata_count_, "");
}
void set_compression_level(grpc_compression_level level) {
maybe_compression_level_.is_set = true;
maybe_compression_level_.level = level;
}
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (!send_) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->flags = flags_;
op->reserved = NULL;
op->data.send_initial_metadata.count = initial_metadata_count_;
op->data.send_initial_metadata.metadata = initial_metadata_;
op->data.send_initial_metadata.maybe_compression_level.is_set =
maybe_compression_level_.is_set;
if (maybe_compression_level_.is_set) {
op->data.send_initial_metadata.maybe_compression_level.level =
maybe_compression_level_.level;
}
}
void FinishOp(bool* status) {
if (!send_) return;
g_core_codegen_interface->gpr_free(initial_metadata_);
send_ = false;
}
bool send_;
uint32_t flags_;
size_t initial_metadata_count_;
grpc_metadata* initial_metadata_;
struct {
bool is_set;
grpc_compression_level level;
} maybe_compression_level_;
};
class CallOpSendMessage {
public:
CallOpSendMessage() : send_buf_(nullptr), own_buf_(false) {}
/// Send \a message using \a options for the write. The \a options are cleared
/// after use.
template <class M>
Status SendMessage(const M& message,
WriteOptions options) GRPC_MUST_USE_RESULT;
template <class M>
Status SendMessage(const M& message) GRPC_MUST_USE_RESULT;
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (send_buf_ == nullptr) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_SEND_MESSAGE;
op->flags = write_options_.flags();
op->reserved = NULL;
op->data.send_message.send_message = send_buf_;
// Flags are per-message: clear them after use.
write_options_.Clear();
}
void FinishOp(bool* status) {
if (own_buf_) g_core_codegen_interface->grpc_byte_buffer_destroy(send_buf_);
send_buf_ = nullptr;
}
private:
grpc_byte_buffer* send_buf_;
WriteOptions write_options_;
bool own_buf_;
};
template <class M>
Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) {
write_options_ = options;
return SerializationTraits<M>::Serialize(message, &send_buf_, &own_buf_);
}
template <class M>
Status CallOpSendMessage::SendMessage(const M& message) {
return SendMessage(message, WriteOptions());
}
template <class R>
class CallOpRecvMessage {
public:
CallOpRecvMessage()
: got_message(false),
message_(nullptr),
allow_not_getting_message_(false) {}
void RecvMessage(R* message) { message_ = message; }
// Do not change status if no message is received.
void AllowNoMessage() { allow_not_getting_message_ = true; }
bool got_message;
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (message_ == nullptr) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_RECV_MESSAGE;
op->flags = 0;
op->reserved = NULL;
op->data.recv_message.recv_message = &recv_buf_;
}
void FinishOp(bool* status) {
if (message_ == nullptr) return;
if (recv_buf_) {
if (*status) {
got_message = *status =
SerializationTraits<R>::Deserialize(recv_buf_, message_).ok();
} else {
got_message = false;
g_core_codegen_interface->grpc_byte_buffer_destroy(recv_buf_);
}
} else {
got_message = false;
if (!allow_not_getting_message_) {
*status = false;
}
}
message_ = nullptr;
}
private:
R* message_;
grpc_byte_buffer* recv_buf_;
bool allow_not_getting_message_;
};
namespace CallOpGenericRecvMessageHelper {
class DeserializeFunc {
public:
virtual Status Deserialize(grpc_byte_buffer* buf) = 0;
virtual ~DeserializeFunc() {}
};
template <class R>
class DeserializeFuncType final : public DeserializeFunc {
public:
DeserializeFuncType(R* message) : message_(message) {}
Status Deserialize(grpc_byte_buffer* buf) override {
return SerializationTraits<R>::Deserialize(buf, message_);
}
~DeserializeFuncType() override {}
private:
R* message_; // Not a managed pointer because management is external to this
};
} // namespace CallOpGenericRecvMessageHelper
class CallOpGenericRecvMessage {
public:
CallOpGenericRecvMessage()
: got_message(false), allow_not_getting_message_(false) {}
template <class R>
void RecvMessage(R* message) {
// Use an explicit base class pointer to avoid resolution error in the
// following unique_ptr::reset for some old implementations.
CallOpGenericRecvMessageHelper::DeserializeFunc* func =
new CallOpGenericRecvMessageHelper::DeserializeFuncType<R>(message);
deserialize_.reset(func);
}
// Do not change status if no message is received.
void AllowNoMessage() { allow_not_getting_message_ = true; }
bool got_message;
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (!deserialize_) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_RECV_MESSAGE;
op->flags = 0;
op->reserved = NULL;
op->data.recv_message.recv_message = &recv_buf_;
}
void FinishOp(bool* status) {
if (!deserialize_) return;
if (recv_buf_) {
if (*status) {
got_message = true;
*status = deserialize_->Deserialize(recv_buf_).ok();
} else {
got_message = false;
g_core_codegen_interface->grpc_byte_buffer_destroy(recv_buf_);
}
} else {
got_message = false;
if (!allow_not_getting_message_) {
*status = false;
}
}
deserialize_.reset();
}
private:
std::unique_ptr<CallOpGenericRecvMessageHelper::DeserializeFunc> deserialize_;
grpc_byte_buffer* recv_buf_;
bool allow_not_getting_message_;
};
class CallOpClientSendClose {
public:
CallOpClientSendClose() : send_(false) {}
void ClientSendClose() { send_ = true; }
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (!send_) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
op->flags = 0;
op->reserved = NULL;
}
void FinishOp(bool* status) { send_ = false; }
private:
bool send_;
};
class CallOpServerSendStatus {
public:
CallOpServerSendStatus() : send_status_available_(false) {}
void ServerSendStatus(
const std::multimap<grpc::string, grpc::string>& trailing_metadata,
const Status& status) {
send_error_details_ = status.error_details();
trailing_metadata_ = FillMetadataArray(
trailing_metadata, &trailing_metadata_count_, send_error_details_);
send_status_available_ = true;
send_status_code_ = static_cast<grpc_status_code>(status.error_code());
send_error_message_ = status.error_message();
}
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (!send_status_available_) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
op->data.send_status_from_server.trailing_metadata_count =
trailing_metadata_count_;
op->data.send_status_from_server.trailing_metadata = trailing_metadata_;
op->data.send_status_from_server.status = send_status_code_;
error_message_slice_ = SliceReferencingString(send_error_message_);
op->data.send_status_from_server.status_details =
send_error_message_.empty() ? nullptr : &error_message_slice_;
op->flags = 0;
op->reserved = NULL;
}
void FinishOp(bool* status) {
if (!send_status_available_) return;
g_core_codegen_interface->gpr_free(trailing_metadata_);
send_status_available_ = false;
}
private:
bool send_status_available_;
grpc_status_code send_status_code_;
grpc::string send_error_details_;
grpc::string send_error_message_;
size_t trailing_metadata_count_;
grpc_metadata* trailing_metadata_;
grpc_slice error_message_slice_;
};
class CallOpRecvInitialMetadata {
public:
CallOpRecvInitialMetadata() : metadata_map_(nullptr) {}
void RecvInitialMetadata(ClientContext* context) {
context->initial_metadata_received_ = true;
metadata_map_ = &context->recv_initial_metadata_;
}
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (metadata_map_ == nullptr) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata.recv_initial_metadata = metadata_map_->arr();
op->flags = 0;
op->reserved = NULL;
}
void FinishOp(bool* status) {
if (metadata_map_ == nullptr) return;
metadata_map_->FillMap();
metadata_map_ = nullptr;
}
private:
MetadataMap* metadata_map_;
};
class CallOpClientRecvStatus {
public:
CallOpClientRecvStatus() : recv_status_(nullptr) {}
void ClientRecvStatus(ClientContext* context, Status* status) {
metadata_map_ = &context->trailing_metadata_;
recv_status_ = status;
error_message_ = g_core_codegen_interface->grpc_empty_slice();
}
protected:
void AddOp(grpc_op* ops, size_t* nops) {
if (recv_status_ == nullptr) return;
grpc_op* op = &ops[(*nops)++];
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.trailing_metadata = metadata_map_->arr();
op->data.recv_status_on_client.status = &status_code_;
op->data.recv_status_on_client.status_details = &error_message_;
op->flags = 0;
op->reserved = NULL;
}
void FinishOp(bool* status) {
if (recv_status_ == nullptr) return;
metadata_map_->FillMap();
grpc::string binary_error_details;
auto iter = metadata_map_->map()->find(kBinaryErrorDetailsKey);
if (iter != metadata_map_->map()->end()) {
binary_error_details =
grpc::string(iter->second.begin(), iter->second.length());
}
*recv_status_ = Status(static_cast<StatusCode>(status_code_),
grpc::string(GRPC_SLICE_START_PTR(error_message_),
GRPC_SLICE_END_PTR(error_message_)),
binary_error_details);
g_core_codegen_interface->grpc_slice_unref(error_message_);
recv_status_ = nullptr;
}
private:
MetadataMap* metadata_map_;
Status* recv_status_;
grpc_status_code status_code_;
grpc_slice error_message_;
};
/// An abstract collection of call ops, used to generate the
/// grpc_call_op structure to pass down to the lower layers,
/// and as it is-a CompletionQueueTag, also massages the final
/// completion into the correct form for consumption in the C++
/// API.
class CallOpSetInterface : public CompletionQueueTag {
public:
/// Fills in grpc_op, starting from ops[*nops] and moving
/// upwards.
virtual void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) = 0;
};
/// Primary implementaiton of CallOpSetInterface.
/// Since we cannot use variadic templates, we declare slots up to
/// the maximum count of ops we'll need in a set. We leverage the
/// empty base class optimization to slim this class (especially
/// when there are many unused slots used). To avoid duplicate base classes,
/// the template parmeter for CallNoOp is varied by argument position.
template <class Op1 = CallNoOp<1>, class Op2 = CallNoOp<2>,
class Op3 = CallNoOp<3>, class Op4 = CallNoOp<4>,
class Op5 = CallNoOp<5>, class Op6 = CallNoOp<6>>
class CallOpSet : public CallOpSetInterface,
public Op1,
public Op2,
public Op3,
public Op4,
public Op5,
public Op6 {
public:
CallOpSet() : return_tag_(this) {}
void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) override {
this->Op1::AddOp(ops, nops);
this->Op2::AddOp(ops, nops);
this->Op3::AddOp(ops, nops);
this->Op4::AddOp(ops, nops);
this->Op5::AddOp(ops, nops);
this->Op6::AddOp(ops, nops);
g_core_codegen_interface->grpc_call_ref(call);
call_ = call;
}
bool FinalizeResult(void** tag, bool* status) override {
this->Op1::FinishOp(status);
this->Op2::FinishOp(status);
this->Op3::FinishOp(status);
this->Op4::FinishOp(status);
this->Op5::FinishOp(status);
this->Op6::FinishOp(status);
*tag = return_tag_;
g_core_codegen_interface->grpc_call_unref(call_);
return true;
}
void set_output_tag(void* return_tag) { return_tag_ = return_tag; }
private:
void* return_tag_;
grpc_call* call_;
};
/// A CallOpSet that does not post completions to the completion queue.
///
/// Allows hiding some completions that the C core must generate from
/// C++ users.
template <class Op1 = CallNoOp<1>, class Op2 = CallNoOp<2>,
class Op3 = CallNoOp<3>, class Op4 = CallNoOp<4>,
class Op5 = CallNoOp<5>, class Op6 = CallNoOp<6>>
class SneakyCallOpSet : public CallOpSet<Op1, Op2, Op3, Op4, Op5, Op6> {
public:
bool FinalizeResult(void** tag, bool* status) override {
typedef CallOpSet<Op1, Op2, Op3, Op4, Op5, Op6> Base;
return Base::FinalizeResult(tag, status) && false;
}
};
/// Straightforward wrapping of the C call object
class Call final {
public:
/** call is owned by the caller */
Call(grpc_call* call, CallHook* call_hook, CompletionQueue* cq)
: call_hook_(call_hook),
cq_(cq),
call_(call),
max_receive_message_size_(-1) {}
Call(grpc_call* call, CallHook* call_hook, CompletionQueue* cq,
int max_receive_message_size)
: call_hook_(call_hook),
cq_(cq),
call_(call),
max_receive_message_size_(max_receive_message_size) {}
void PerformOps(CallOpSetInterface* ops) {
call_hook_->PerformOpsOnCall(ops, this);
}
grpc_call* call() const { return call_; }
CompletionQueue* cq() const { return cq_; }
int max_receive_message_size() const { return max_receive_message_size_; }
private:
CallHook* call_hook_;
CompletionQueue* cq_;
grpc_call* call_;
int max_receive_message_size_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CALL_H

37
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@@ -1,37 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CALL_HOOK_H
#define GRPCXX_IMPL_CODEGEN_CALL_HOOK_H
namespace grpc {
class CallOpSetInterface;
class Call;
/// This is an interface that Channel and Server implement to allow them to hook
/// performing ops.
class CallHook {
public:
virtual ~CallHook() {}
virtual void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) = 0;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CALL_HOOK_H

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@@ -1,118 +0,0 @@
/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CHANNEL_INTERFACE_H
#define GRPCXX_IMPL_CODEGEN_CHANNEL_INTERFACE_H
#include <grpc++/impl/codegen/status.h>
#include <grpc++/impl/codegen/time.h>
#include <grpc/impl/codegen/connectivity_state.h>
namespace grpc {
class Call;
class ClientContext;
class RpcMethod;
class CallOpSetInterface;
class CompletionQueue;
template <class R>
class ClientReader;
template <class W>
class ClientWriter;
template <class W, class R>
class ClientReaderWriter;
template <class R>
class ClientAsyncReader;
template <class W>
class ClientAsyncWriter;
template <class W, class R>
class ClientAsyncReaderWriter;
template <class R>
class ClientAsyncResponseReader;
/// Codegen interface for \a grpc::Channel.
class ChannelInterface {
public:
virtual ~ChannelInterface() {}
/// Get the current channel state. If the channel is in IDLE and
/// \a try_to_connect is set to true, try to connect.
virtual grpc_connectivity_state GetState(bool try_to_connect) = 0;
/// Return the \a tag on \a cq when the channel state is changed or \a
/// deadline expires. \a GetState needs to called to get the current state.
template <typename T>
void NotifyOnStateChange(grpc_connectivity_state last_observed, T deadline,
CompletionQueue* cq, void* tag) {
TimePoint<T> deadline_tp(deadline);
NotifyOnStateChangeImpl(last_observed, deadline_tp.raw_time(), cq, tag);
}
/// Blocking wait for channel state change or \a deadline expiration.
/// \a GetState needs to called to get the current state.
template <typename T>
bool WaitForStateChange(grpc_connectivity_state last_observed, T deadline) {
TimePoint<T> deadline_tp(deadline);
return WaitForStateChangeImpl(last_observed, deadline_tp.raw_time());
}
/// Wait for this channel to be connected
template <typename T>
bool WaitForConnected(T deadline) {
grpc_connectivity_state state;
while ((state = GetState(true)) != GRPC_CHANNEL_READY) {
if (!WaitForStateChange(state, deadline)) return false;
}
return true;
}
private:
template <class R>
friend class ::grpc::ClientReader;
template <class W>
friend class ::grpc::ClientWriter;
template <class W, class R>
friend class ::grpc::ClientReaderWriter;
template <class R>
friend class ::grpc::ClientAsyncReader;
template <class W>
friend class ::grpc::ClientAsyncWriter;
template <class W, class R>
friend class ::grpc::ClientAsyncReaderWriter;
template <class R>
friend class ::grpc::ClientAsyncResponseReader;
template <class InputMessage, class OutputMessage>
friend Status BlockingUnaryCall(ChannelInterface* channel,
const RpcMethod& method,
ClientContext* context,
const InputMessage& request,
OutputMessage* result);
friend class ::grpc::RpcMethod;
virtual Call CreateCall(const RpcMethod& method, ClientContext* context,
CompletionQueue* cq) = 0;
virtual void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) = 0;
virtual void* RegisterMethod(const char* method) = 0;
virtual void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline,
CompletionQueue* cq, void* tag) = 0;
virtual bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline) = 0;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CHANNEL_INTERFACE_H

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@@ -1,414 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/// A ClientContext allows the person implementing a service client to:
///
/// - Add custom metadata key-value pairs that will propagated to the server
/// side.
/// - Control call settings such as compression and authentication.
/// - Initial and trailing metadata coming from the server.
/// - Get performance metrics (ie, census).
///
/// Context settings are only relevant to the call they are invoked with, that
/// is to say, they aren't sticky. Some of these settings, such as the
/// compression options, can be made persistent at channel construction time
/// (see \a grpc::CreateCustomChannel).
///
/// \warning ClientContext instances should \em not be reused across rpcs.
#ifndef GRPCXX_IMPL_CODEGEN_CLIENT_CONTEXT_H
#define GRPCXX_IMPL_CODEGEN_CLIENT_CONTEXT_H
#include <map>
#include <memory>
#include <mutex>
#include <string>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/create_auth_context.h>
#include <grpc++/impl/codegen/metadata_map.h>
#include <grpc++/impl/codegen/security/auth_context.h>
#include <grpc++/impl/codegen/slice.h>
#include <grpc++/impl/codegen/status.h>
#include <grpc++/impl/codegen/string_ref.h>
#include <grpc++/impl/codegen/time.h>
#include <grpc/impl/codegen/compression_types.h>
#include <grpc/impl/codegen/propagation_bits.h>
struct census_context;
struct grpc_call;
namespace grpc {
class Channel;
class ChannelInterface;
class CompletionQueue;
class CallCredentials;
class RpcMethod;
template <class R>
class ClientReader;
template <class W>
class ClientWriter;
template <class W, class R>
class ClientReaderWriter;
template <class R>
class ClientAsyncReader;
template <class W>
class ClientAsyncWriter;
template <class W, class R>
class ClientAsyncReaderWriter;
template <class R>
class ClientAsyncResponseReader;
class ServerContext;
/// Options for \a ClientContext::FromServerContext specifying which traits from
/// the \a ServerContext to propagate (copy) from it into a new \a
/// ClientContext.
///
/// \see ClientContext::FromServerContext
class PropagationOptions {
public:
PropagationOptions() : propagate_(GRPC_PROPAGATE_DEFAULTS) {}
PropagationOptions& enable_deadline_propagation() {
propagate_ |= GRPC_PROPAGATE_DEADLINE;
return *this;
}
PropagationOptions& disable_deadline_propagation() {
propagate_ &= ~GRPC_PROPAGATE_DEADLINE;
return *this;
}
PropagationOptions& enable_census_stats_propagation() {
propagate_ |= GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
return *this;
}
PropagationOptions& disable_census_stats_propagation() {
propagate_ &= ~GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
return *this;
}
PropagationOptions& enable_census_tracing_propagation() {
propagate_ |= GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
return *this;
}
PropagationOptions& disable_census_tracing_propagation() {
propagate_ &= ~GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
return *this;
}
PropagationOptions& enable_cancellation_propagation() {
propagate_ |= GRPC_PROPAGATE_CANCELLATION;
return *this;
}
PropagationOptions& disable_cancellation_propagation() {
propagate_ &= ~GRPC_PROPAGATE_CANCELLATION;
return *this;
}
uint32_t c_bitmask() const { return propagate_; }
private:
uint32_t propagate_;
};
namespace testing {
class InteropClientContextInspector;
} // namespace testing
/// A ClientContext allows the person implementing a service client to:
///
/// - Add custom metadata key-value pairs that will propagated to the server
/// side.
/// - Control call settings such as compression and authentication.
/// - Initial and trailing metadata coming from the server.
/// - Get performance metrics (ie, census).
///
/// Context settings are only relevant to the call they are invoked with, that
/// is to say, they aren't sticky. Some of these settings, such as the
/// compression options, can be made persistent at channel construction time
/// (see \a grpc::CreateCustomChannel).
///
/// \warning ClientContext instances should \em not be reused across rpcs.
class ClientContext {
public:
ClientContext();
~ClientContext();
/// Create a new \a ClientContext as a child of an incoming server call,
/// according to \a options (\see PropagationOptions).
///
/// \param server_context The source server context to use as the basis for
/// constructing the client context.
/// \param options The options controlling what to copy from the \a
/// server_context.
///
/// \return A newly constructed \a ClientContext instance based on \a
/// server_context, with traits propagated (copied) according to \a options.
static std::unique_ptr<ClientContext> FromServerContext(
const ServerContext& server_context,
PropagationOptions options = PropagationOptions());
/// Add the (\a meta_key, \a meta_value) pair to the metadata associated with
/// a client call. These are made available at the server side by the \a
/// grpc::ServerContext::client_metadata() method.
///
/// \warning This method should only be called before invoking the rpc.
///
/// \param meta_key The metadata key. If \a meta_value is binary data, it must
/// end in "-bin".
/// \param meta_value The metadata value. If its value is binary, the key name
/// must end in "-bin".
void AddMetadata(const grpc::string& meta_key,
const grpc::string& meta_value);
/// Return a collection of initial metadata key-value pairs. Note that keys
/// may happen more than once (ie, a \a std::multimap is returned).
///
/// \warning This method should only be called after initial metadata has been
/// received. For streaming calls, see \a
/// ClientReaderInterface::WaitForInitialMetadata().
///
/// \return A multimap of initial metadata key-value pairs from the server.
const std::multimap<grpc::string_ref, grpc::string_ref>&
GetServerInitialMetadata() const {
GPR_CODEGEN_ASSERT(initial_metadata_received_);
return *recv_initial_metadata_.map();
}
/// Return a collection of trailing metadata key-value pairs. Note that keys
/// may happen more than once (ie, a \a std::multimap is returned).
///
/// \warning This method is only callable once the stream has finished.
///
/// \return A multimap of metadata trailing key-value pairs from the server.
const std::multimap<grpc::string_ref, grpc::string_ref>&
GetServerTrailingMetadata() const {
// TODO(yangg) check finished
return *trailing_metadata_.map();
}
/// Set the deadline for the client call.
///
/// \warning This method should only be called before invoking the rpc.
///
/// \param deadline the deadline for the client call. Units are determined by
/// the type used.
template <typename T>
void set_deadline(const T& deadline) {
TimePoint<T> deadline_tp(deadline);
deadline_ = deadline_tp.raw_time();
}
/// EXPERIMENTAL: Indicate that this request is idempotent.
/// By default, RPCs are assumed to <i>not</i> be idempotent.
///
/// If true, the gRPC library assumes that it's safe to initiate
/// this RPC multiple times.
void set_idempotent(bool idempotent) { idempotent_ = idempotent; }
/// EXPERIMENTAL: Set this request to be cacheable.
/// If set, grpc is free to use the HTTP GET verb for sending the request,
/// with the possibility of receiving a cached response.
void set_cacheable(bool cacheable) { cacheable_ = cacheable; }
/// EXPERIMENTAL: Trigger wait-for-ready or not on this request.
/// See https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
/// If set, if an RPC is made when a channel's connectivity state is
/// TRANSIENT_FAILURE or CONNECTING, the call will not "fail fast",
/// and the channel will wait until the channel is READY before making the
/// call.
void set_wait_for_ready(bool wait_for_ready) {
wait_for_ready_ = wait_for_ready;
wait_for_ready_explicitly_set_ = true;
}
/// DEPRECATED: Use set_wait_for_ready() instead.
void set_fail_fast(bool fail_fast) { set_wait_for_ready(!fail_fast); }
/// Return the deadline for the client call.
std::chrono::system_clock::time_point deadline() const {
return Timespec2Timepoint(deadline_);
}
/// Return a \a gpr_timespec representation of the client call's deadline.
gpr_timespec raw_deadline() const { return deadline_; }
/// Set the per call authority header (see
/// https://tools.ietf.org/html/rfc7540#section-8.1.2.3).
void set_authority(const grpc::string& authority) { authority_ = authority; }
/// Return the authentication context for this client call.
///
/// \see grpc::AuthContext.
std::shared_ptr<const AuthContext> auth_context() const {
if (auth_context_.get() == nullptr) {
auth_context_ = CreateAuthContext(call_);
}
return auth_context_;
}
/// Set credentials for the client call.
///
/// A credentials object encapsulates all the state needed by a client to
/// authenticate with a server and make various assertions, e.g., about the
/// client’s identity, role, or whether it is authorized to make a particular
/// call.
///
/// \see https://grpc.io/docs/guides/auth.html
void set_credentials(const std::shared_ptr<CallCredentials>& creds) {
creds_ = creds;
}
/// Return the compression algorithm to be used by the client call.
grpc_compression_algorithm compression_algorithm() const {
return compression_algorithm_;
}
/// Set \a algorithm to be the compression algorithm used for the client call.
///
/// \param algorithm The compression algorithm used for the client call.
void set_compression_algorithm(grpc_compression_algorithm algorithm);
/// Flag whether the initial metadata should be \a corked
///
/// If \a corked is true, then the initial metadata will be coalesced with the
/// write of first message in the stream.
///
/// \param corked The flag indicating whether the initial metadata is to be
/// corked or not.
void set_initial_metadata_corked(bool corked) {
initial_metadata_corked_ = corked;
}
/// Return the peer uri in a string.
///
/// \warning This value is never authenticated or subject to any security
/// related code. It must not be used for any authentication related
/// functionality. Instead, use auth_context.
///
/// \return The call's peer URI.
grpc::string peer() const;
/// Get and set census context.
void set_census_context(struct census_context* ccp) { census_context_ = ccp; }
struct census_context* census_context() const {
return census_context_;
}
/// Send a best-effort out-of-band cancel on the call associated with
/// this client context. The call could be in any stage; e.g., if it is
/// already finished, it may still return success.
///
/// There is no guarantee the call will be cancelled.
void TryCancel();
/// Global Callbacks
///
/// Can be set exactly once per application to install hooks whenever
/// a client context is constructed and destructed.
class GlobalCallbacks {
public:
virtual ~GlobalCallbacks() {}
virtual void DefaultConstructor(ClientContext* context) = 0;
virtual void Destructor(ClientContext* context) = 0;
};
static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
/// Should be used for framework-level extensions only.
/// Applications never need to call this method.
grpc_call* c_call() { return call_; }
private:
// Disallow copy and assign.
ClientContext(const ClientContext&);
ClientContext& operator=(const ClientContext&);
friend class ::grpc::testing::InteropClientContextInspector;
friend class CallOpClientRecvStatus;
friend class CallOpRecvInitialMetadata;
friend class Channel;
template <class R>
friend class ::grpc::ClientReader;
template <class W>
friend class ::grpc::ClientWriter;
template <class W, class R>
friend class ::grpc::ClientReaderWriter;
template <class R>
friend class ::grpc::ClientAsyncReader;
template <class W>
friend class ::grpc::ClientAsyncWriter;
template <class W, class R>
friend class ::grpc::ClientAsyncReaderWriter;
template <class R>
friend class ::grpc::ClientAsyncResponseReader;
template <class InputMessage, class OutputMessage>
friend Status BlockingUnaryCall(ChannelInterface* channel,
const RpcMethod& method,
ClientContext* context,
const InputMessage& request,
OutputMessage* result);
grpc_call* call() const { return call_; }
void set_call(grpc_call* call, const std::shared_ptr<Channel>& channel);
uint32_t initial_metadata_flags() const {
return (idempotent_ ? GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST : 0) |
(wait_for_ready_ ? GRPC_INITIAL_METADATA_WAIT_FOR_READY : 0) |
(cacheable_ ? GRPC_INITIAL_METADATA_CACHEABLE_REQUEST : 0) |
(wait_for_ready_explicitly_set_
? GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET
: 0) |
(initial_metadata_corked_ ? GRPC_INITIAL_METADATA_CORKED : 0);
}
grpc::string authority() { return authority_; }
bool initial_metadata_received_;
bool wait_for_ready_;
bool wait_for_ready_explicitly_set_;
bool idempotent_;
bool cacheable_;
std::shared_ptr<Channel> channel_;
std::mutex mu_;
grpc_call* call_;
bool call_canceled_;
gpr_timespec deadline_;
grpc::string authority_;
std::shared_ptr<CallCredentials> creds_;
mutable std::shared_ptr<const AuthContext> auth_context_;
struct census_context* census_context_;
std::multimap<grpc::string, grpc::string> send_initial_metadata_;
MetadataMap recv_initial_metadata_;
MetadataMap trailing_metadata_;
grpc_call* propagate_from_call_;
PropagationOptions propagation_options_;
grpc_compression_algorithm compression_algorithm_;
bool initial_metadata_corked_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CLIENT_CONTEXT_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
#define GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
#include <grpc++/impl/codegen/call.h>
#include <grpc++/impl/codegen/channel_interface.h>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
class Channel;
class ClientContext;
class CompletionQueue;
class RpcMethod;
/// Wrapper that performs a blocking unary call
template <class InputMessage, class OutputMessage>
Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
ClientContext* context, const InputMessage& request,
OutputMessage* result) {
CompletionQueue cq(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK,
GRPC_CQ_DEFAULT_POLLING}); // Pluckable completion queue
Call call(channel->CreateCall(method, context, &cq));
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>,
CallOpClientSendClose, CallOpClientRecvStatus>
ops;
Status status = ops.SendMessage(request);
if (!status.ok()) {
return status;
}
ops.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
ops.RecvInitialMetadata(context);
ops.RecvMessage(result);
ops.ClientSendClose();
ops.ClientRecvStatus(context, &status);
call.PerformOps(&ops);
if (cq.Pluck(&ops)) {
if (!ops.got_message && status.ok()) {
return Status(StatusCode::UNIMPLEMENTED,
"No message returned for unary request");
}
} else {
GPR_CODEGEN_ASSERT(!status.ok());
}
return status;
}
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H

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/*
*
* Copyright 2015-2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/// A completion queue implements a concurrent producer-consumer queue, with
/// two main API-exposed methods: \a Next and \a AsyncNext. These
/// methods are the essential component of the gRPC C++ asynchronous API.
/// There is also a \a Shutdown method to indicate that a given completion queue
/// will no longer have regular events. This must be called before the
/// completion queue is destroyed.
/// All completion queue APIs are thread-safe and may be used concurrently with
/// any other completion queue API invocation; it is acceptable to have
/// multiple threads calling \a Next or \a AsyncNext on the same or different
/// completion queues, or to call these methods concurrently with a \a Shutdown
/// elsewhere.
/// \remark{All other API calls on completion queue should be completed before
/// a completion queue destructor is called.}
#ifndef GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_H
#define GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_H
#include <grpc++/impl/codegen/completion_queue_tag.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc++/impl/codegen/status.h>
#include <grpc++/impl/codegen/time.h>
#include <grpc/impl/codegen/atm.h>
struct grpc_completion_queue;
namespace grpc {
template <class R>
class ClientReader;
template <class W>
class ClientWriter;
template <class W, class R>
class ClientReaderWriter;
template <class R>
class ServerReader;
template <class W>
class ServerWriter;
namespace internal {
template <class W, class R>
class ServerReaderWriterBody;
}
template <class ServiceType, class RequestType, class ResponseType>
class RpcMethodHandler;
template <class ServiceType, class RequestType, class ResponseType>
class ClientStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
class ServerStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
class BidiStreamingHandler;
class UnknownMethodHandler;
class Channel;
class ChannelInterface;
class ClientContext;
class CompletionQueueTag;
class CompletionQueue;
class RpcMethod;
class Server;
class ServerBuilder;
class ServerContext;
extern CoreCodegenInterface* g_core_codegen_interface;
/// A thin wrapper around \ref grpc_completion_queue (see \ref
/// src/core/lib/surface/completion_queue.h).
/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
/// performance servers.
class CompletionQueue : private GrpcLibraryCodegen {
public:
/// Default constructor. Implicitly creates a \a grpc_completion_queue
/// instance.
CompletionQueue()
: CompletionQueue(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_NEXT, GRPC_CQ_DEFAULT_POLLING}) {}
/// Wrap \a take, taking ownership of the instance.
///
/// \param take The completion queue instance to wrap. Ownership is taken.
explicit CompletionQueue(grpc_completion_queue* take);
/// Destructor. Destroys the owned wrapped completion queue / instance.
~CompletionQueue() {
g_core_codegen_interface->grpc_completion_queue_destroy(cq_);
}
/// Tri-state return for AsyncNext: SHUTDOWN, GOT_EVENT, TIMEOUT.
enum NextStatus {
SHUTDOWN, ///< The completion queue has been shutdown.
GOT_EVENT, ///< Got a new event; \a tag will be filled in with its
///< associated value; \a ok indicating its success.
TIMEOUT ///< deadline was reached.
};
/// Read from the queue, blocking up to \a deadline (or the queue's shutdown).
/// Both \a tag and \a ok are updated upon success (if an event is available
/// within the \a deadline). A \a tag points to an arbitrary location usually
/// employed to uniquely identify an event.
///
/// \param tag[out] Upon sucess, updated to point to the event's tag.
/// \param ok[out] Upon sucess, true if read a regular event, false otherwise.
/// \param deadline[in] How long to block in wait for an event.
///
/// \return The type of event read.
template <typename T>
NextStatus AsyncNext(void** tag, bool* ok, const T& deadline) {
TimePoint<T> deadline_tp(deadline);
return AsyncNextInternal(tag, ok, deadline_tp.raw_time());
}
/// Read from the queue, blocking until an event is available or the queue is
/// shutting down.
///
/// \param tag[out] Updated to point to the read event's tag.
/// \param ok[out] true if read a regular event, false otherwise.
///
/// \return true if read a regular event, false if the queue is shutting down.
bool Next(void** tag, bool* ok) {
return (AsyncNextInternal(tag, ok, g_core_codegen_interface->gpr_inf_future(
GPR_CLOCK_REALTIME)) != SHUTDOWN);
}
/// Request the shutdown of the queue.
///
/// \warning This method must be called at some point if this completion queue
/// is accessed with Next or AsyncNext. Once invoked, \a Next
/// will start to return false and \a AsyncNext will return \a
/// NextStatus::SHUTDOWN. Only once either one of these methods does that
/// (that is, once the queue has been \em drained) can an instance of this
/// class be destroyed. Also note that applications must ensure that
/// no work is enqueued on this completion queue after this method is called.
void Shutdown();
/// Returns a \em raw pointer to the underlying \a grpc_completion_queue
/// instance.
///
/// \warning Remember that the returned instance is owned. No transfer of
/// owership is performed.
grpc_completion_queue* cq() { return cq_; }
/// Manage state of avalanching operations : completion queue tags that
/// trigger other completion queue operations. The underlying core completion
/// queue should not really shutdown until all avalanching operations have
/// been finalized. Note that we maintain the requirement that an avalanche
/// registration must take place before CQ shutdown (which must be maintained
/// elsehwere)
void InitialAvalanching() {
gpr_atm_rel_store(&avalanches_in_flight_, static_cast<gpr_atm>(1));
}
void RegisterAvalanching() {
gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_,
static_cast<gpr_atm>(1));
}
void CompleteAvalanching();
protected:
/// Private constructor of CompletionQueue only visible to friend classes
CompletionQueue(const grpc_completion_queue_attributes& attributes) {
cq_ = g_core_codegen_interface->grpc_completion_queue_create(
g_core_codegen_interface->grpc_completion_queue_factory_lookup(
&attributes),
&attributes, NULL);
InitialAvalanching(); // reserve this for the future shutdown
}
private:
// Friend synchronous wrappers so that they can access Pluck(), which is
// a semi-private API geared towards the synchronous implementation.
template <class R>
friend class ::grpc::ClientReader;
template <class W>
friend class ::grpc::ClientWriter;
template <class W, class R>
friend class ::grpc::ClientReaderWriter;
template <class R>
friend class ::grpc::ServerReader;
template <class W>
friend class ::grpc::ServerWriter;
template <class W, class R>
friend class ::grpc::internal::ServerReaderWriterBody;
template <class ServiceType, class RequestType, class ResponseType>
friend class RpcMethodHandler;
template <class ServiceType, class RequestType, class ResponseType>
friend class ClientStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
friend class ServerStreamingHandler;
template <class Streamer, bool WriteNeeded>
friend class TemplatedBidiStreamingHandler;
friend class UnknownMethodHandler;
friend class ::grpc::Server;
friend class ::grpc::ServerContext;
template <class InputMessage, class OutputMessage>
friend Status BlockingUnaryCall(ChannelInterface* channel,
const RpcMethod& method,
ClientContext* context,
const InputMessage& request,
OutputMessage* result);
NextStatus AsyncNextInternal(void** tag, bool* ok, gpr_timespec deadline);
/// Wraps \a grpc_completion_queue_pluck.
/// \warning Must not be mixed with calls to \a Next.
bool Pluck(CompletionQueueTag* tag) {
auto deadline =
g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME);
auto ev = g_core_codegen_interface->grpc_completion_queue_pluck(
cq_, tag, deadline, nullptr);
bool ok = ev.success != 0;
void* ignored = tag;
GPR_CODEGEN_ASSERT(tag->FinalizeResult(&ignored, &ok));
GPR_CODEGEN_ASSERT(ignored == tag);
// Ignore mutations by FinalizeResult: Pluck returns the C API status
return ev.success != 0;
}
/// Performs a single polling pluck on \a tag.
/// \warning Must not be mixed with calls to \a Next.
///
/// TODO: sreek - This calls tag->FinalizeResult() even if the cq_ is already
/// shutdown. This is most likely a bug and if it is a bug, then change this
/// implementation to simple call the other TryPluck function with a zero
/// timeout. i.e:
/// TryPluck(tag, gpr_time_0(GPR_CLOCK_REALTIME))
void TryPluck(CompletionQueueTag* tag) {
auto deadline = g_core_codegen_interface->gpr_time_0(GPR_CLOCK_REALTIME);
auto ev = g_core_codegen_interface->grpc_completion_queue_pluck(
cq_, tag, deadline, nullptr);
if (ev.type == GRPC_QUEUE_TIMEOUT) return;
bool ok = ev.success != 0;
void* ignored = tag;
// the tag must be swallowed if using TryPluck
GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
}
/// Performs a single polling pluck on \a tag. Calls tag->FinalizeResult if
/// the pluck() was successful and returned the tag.
///
/// This exects tag->FinalizeResult (if called) to return 'false' i.e expects
/// that the tag is internal not something that is returned to the user.
void TryPluck(CompletionQueueTag* tag, gpr_timespec deadline) {
auto ev = g_core_codegen_interface->grpc_completion_queue_pluck(
cq_, tag, deadline, nullptr);
if (ev.type == GRPC_QUEUE_TIMEOUT || ev.type == GRPC_QUEUE_SHUTDOWN) {
return;
}
bool ok = ev.success != 0;
void* ignored = tag;
GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
}
grpc_completion_queue* cq_; // owned
gpr_atm avalanches_in_flight_;
};
/// A specific type of completion queue used by the processing of notifications
/// by servers. Instantiated by \a ServerBuilder.
class ServerCompletionQueue : public CompletionQueue {
public:
bool IsFrequentlyPolled() { return polling_type_ != GRPC_CQ_NON_LISTENING; }
private:
grpc_cq_polling_type polling_type_;
friend class ServerBuilder;
/// \param is_frequently_polled Informs the GRPC library about whether the
/// server completion queue would be actively polled (by calling Next() or
/// AsyncNext()). By default all server completion queues are assumed to be
/// frequently polled.
ServerCompletionQueue(grpc_cq_polling_type polling_type)
: CompletionQueue(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_NEXT, polling_type}),
polling_type_(polling_type) {}
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
#define GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
namespace grpc {
/// An interface allowing implementors to process and filter event tags.
class CompletionQueueTag {
public:
virtual ~CompletionQueueTag() {}
/// Called prior to returning from Next(), return value is the status of the
/// operation (return status is the default thing to do). If this function
/// returns false, the tag is dropped and not returned from the completion
/// queue
virtual bool FinalizeResult(void** tag, bool* status) = 0;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CONFIG_H
#define GRPCXX_IMPL_CODEGEN_CONFIG_H
#ifndef GRPC_CUSTOM_STRING
#include <string>
#define GRPC_CUSTOM_STRING std::string
#endif
/// The following macros are deprecated and appear only for users
/// with PB files generated using gRPC 1.0.x plugins. They should
/// not be used in new code
#define GRPC_OVERRIDE override // deprecated
#define GRPC_FINAL final // deprecated
namespace grpc {
typedef GRPC_CUSTOM_STRING string;
using std::to_string;
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CONFIG_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CONFIG_PROTOBUF_H
#define GRPCXX_IMPL_CODEGEN_CONFIG_PROTOBUF_H
#ifndef GRPC_CUSTOM_PROTOBUF_INT64
#include <google/protobuf/stubs/common.h>
#define GRPC_CUSTOM_PROTOBUF_INT64 ::google::protobuf::int64
#endif
#ifndef GRPC_CUSTOM_MESSAGE
#ifdef GRPC_USE_PROTO_LITE
#include <google/protobuf/message_lite.h>
#define GRPC_CUSTOM_MESSAGE ::google::protobuf::MessageLite
#else
#include <google/protobuf/message.h>
#define GRPC_CUSTOM_MESSAGE ::google::protobuf::Message
#endif
#endif
#ifndef GRPC_CUSTOM_DESCRIPTOR
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#define GRPC_CUSTOM_DESCRIPTOR ::google::protobuf::Descriptor
#define GRPC_CUSTOM_DESCRIPTORPOOL ::google::protobuf::DescriptorPool
#define GRPC_CUSTOM_FIELDDESCRIPTOR ::google::protobuf::FieldDescriptor
#define GRPC_CUSTOM_FILEDESCRIPTOR ::google::protobuf::FileDescriptor
#define GRPC_CUSTOM_FILEDESCRIPTORPROTO ::google::protobuf::FileDescriptorProto
#define GRPC_CUSTOM_METHODDESCRIPTOR ::google::protobuf::MethodDescriptor
#define GRPC_CUSTOM_SERVICEDESCRIPTOR ::google::protobuf::ServiceDescriptor
#define GRPC_CUSTOM_SOURCELOCATION ::google::protobuf::SourceLocation
#endif
#ifndef GRPC_CUSTOM_DESCRIPTORDATABASE
#include <google/protobuf/descriptor_database.h>
#define GRPC_CUSTOM_DESCRIPTORDATABASE ::google::protobuf::DescriptorDatabase
#define GRPC_CUSTOM_SIMPLEDESCRIPTORDATABASE \
::google::protobuf::SimpleDescriptorDatabase
#endif
#ifndef GRPC_CUSTOM_ZEROCOPYOUTPUTSTREAM
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream.h>
#define GRPC_CUSTOM_ZEROCOPYOUTPUTSTREAM \
::google::protobuf::io::ZeroCopyOutputStream
#define GRPC_CUSTOM_ZEROCOPYINPUTSTREAM \
::google::protobuf::io::ZeroCopyInputStream
#define GRPC_CUSTOM_CODEDINPUTSTREAM ::google::protobuf::io::CodedInputStream
#endif
namespace grpc {
namespace protobuf {
typedef GRPC_CUSTOM_MESSAGE Message;
typedef GRPC_CUSTOM_PROTOBUF_INT64 int64;
typedef GRPC_CUSTOM_DESCRIPTOR Descriptor;
typedef GRPC_CUSTOM_DESCRIPTORPOOL DescriptorPool;
typedef GRPC_CUSTOM_DESCRIPTORDATABASE DescriptorDatabase;
typedef GRPC_CUSTOM_FIELDDESCRIPTOR FieldDescriptor;
typedef GRPC_CUSTOM_FILEDESCRIPTOR FileDescriptor;
typedef GRPC_CUSTOM_FILEDESCRIPTORPROTO FileDescriptorProto;
typedef GRPC_CUSTOM_METHODDESCRIPTOR MethodDescriptor;
typedef GRPC_CUSTOM_SERVICEDESCRIPTOR ServiceDescriptor;
typedef GRPC_CUSTOM_SIMPLEDESCRIPTORDATABASE SimpleDescriptorDatabase;
typedef GRPC_CUSTOM_SOURCELOCATION SourceLocation;
namespace io {
typedef GRPC_CUSTOM_ZEROCOPYOUTPUTSTREAM ZeroCopyOutputStream;
typedef GRPC_CUSTOM_ZEROCOPYINPUTSTREAM ZeroCopyInputStream;
typedef GRPC_CUSTOM_CODEDINPUTSTREAM CodedInputStream;
} // namespace io
} // namespace protobuf
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CONFIG_PROTOBUF_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_H
#define GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_H
// This file should be compiled as part of grpc++.
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc/byte_buffer.h>
#include <grpc/grpc.h>
#include <grpc/impl/codegen/grpc_types.h>
namespace grpc {
/// Implementation of the core codegen interface.
class CoreCodegen final : public CoreCodegenInterface {
private:
virtual const grpc_completion_queue_factory*
grpc_completion_queue_factory_lookup(
const grpc_completion_queue_attributes* attributes) override;
virtual grpc_completion_queue* grpc_completion_queue_create(
const grpc_completion_queue_factory* factory,
const grpc_completion_queue_attributes* attributes,
void* reserved) override;
grpc_completion_queue* grpc_completion_queue_create_for_next(
void* reserved) override;
grpc_completion_queue* grpc_completion_queue_create_for_pluck(
void* reserved) override;
void grpc_completion_queue_destroy(grpc_completion_queue* cq) override;
grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq, void* tag,
gpr_timespec deadline,
void* reserved) override;
void* gpr_malloc(size_t size) override;
void gpr_free(void* p) override;
void gpr_mu_init(gpr_mu* mu) override;
void gpr_mu_destroy(gpr_mu* mu) override;
void gpr_mu_lock(gpr_mu* mu) override;
void gpr_mu_unlock(gpr_mu* mu) override;
void gpr_cv_init(gpr_cv* cv) override;
void gpr_cv_destroy(gpr_cv* cv) override;
int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) override;
void gpr_cv_signal(gpr_cv* cv) override;
void gpr_cv_broadcast(gpr_cv* cv) override;
grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
grpc_status_code status,
const char* description,
void* reserved) override;
void grpc_call_ref(grpc_call* call) override;
void grpc_call_unref(grpc_call* call) override;
virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) override;
void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) override;
int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
grpc_byte_buffer* buffer) override;
void grpc_byte_buffer_reader_destroy(
grpc_byte_buffer_reader* reader) override;
int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
grpc_slice* slice) override;
grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
size_t nslices) override;
grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
void (*destroy)(void*),
void* user_data) override;
grpc_slice grpc_empty_slice() override;
grpc_slice grpc_slice_malloc(size_t length) override;
void grpc_slice_unref(grpc_slice slice) override;
grpc_slice grpc_slice_ref(grpc_slice slice) override;
grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) override;
grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) override;
void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice slice) override;
void grpc_slice_buffer_pop(grpc_slice_buffer* sb) override;
grpc_slice grpc_slice_from_static_buffer(const void* buffer,
size_t length) override;
grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
size_t length) override;
void grpc_metadata_array_init(grpc_metadata_array* array) override;
void grpc_metadata_array_destroy(grpc_metadata_array* array) override;
gpr_timespec gpr_inf_future(gpr_clock_type type) override;
gpr_timespec gpr_time_0(gpr_clock_type type) override;
virtual const Status& ok() override;
virtual const Status& cancelled() override;
void assert_fail(const char* failed_assertion, const char* file,
int line) override;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
#define GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/status.h>
#include <grpc/impl/codegen/byte_buffer_reader.h>
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/impl/codegen/sync.h>
extern "C" {
struct grpc_byte_buffer;
}
namespace grpc {
/// Interface between the codegen library and the minimal subset of core
/// features required by the generated code.
///
/// All undocumented methods are simply forwarding the call to their namesakes.
/// Please refer to their corresponding documentation for details.
///
/// \warning This interface should be considered internal and private.
class CoreCodegenInterface {
public:
/// Upon a failed assertion, log the error.
virtual void assert_fail(const char* failed_assertion, const char* file,
int line) = 0;
virtual const grpc_completion_queue_factory*
grpc_completion_queue_factory_lookup(
const grpc_completion_queue_attributes* attributes) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create(
const grpc_completion_queue_factory* factory,
const grpc_completion_queue_attributes* attributes, void* reserved) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create_for_next(
void* reserved) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create_for_pluck(
void* reserved) = 0;
virtual void grpc_completion_queue_destroy(grpc_completion_queue* cq) = 0;
virtual grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq,
void* tag,
gpr_timespec deadline,
void* reserved) = 0;
virtual void* gpr_malloc(size_t size) = 0;
virtual void gpr_free(void* p) = 0;
virtual void gpr_mu_init(gpr_mu* mu) = 0;
virtual void gpr_mu_destroy(gpr_mu* mu) = 0;
virtual void gpr_mu_lock(gpr_mu* mu) = 0;
virtual void gpr_mu_unlock(gpr_mu* mu) = 0;
virtual void gpr_cv_init(gpr_cv* cv) = 0;
virtual void gpr_cv_destroy(gpr_cv* cv) = 0;
virtual int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
gpr_timespec abs_deadline) = 0;
virtual void gpr_cv_signal(gpr_cv* cv) = 0;
virtual void gpr_cv_broadcast(gpr_cv* cv) = 0;
virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0;
virtual int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
grpc_byte_buffer* buffer)
GRPC_MUST_USE_RESULT = 0;
virtual void grpc_byte_buffer_reader_destroy(
grpc_byte_buffer_reader* reader) = 0;
virtual int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
grpc_slice* slice) = 0;
virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
size_t nslices) = 0;
virtual grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
void (*destroy)(void*),
void* user_data) = 0;
virtual grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
grpc_status_code status,
const char* description,
void* reserved) = 0;
virtual void grpc_call_ref(grpc_call* call) = 0;
virtual void grpc_call_unref(grpc_call* call) = 0;
virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) = 0;
virtual grpc_slice grpc_empty_slice() = 0;
virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
virtual void grpc_slice_unref(grpc_slice slice) = 0;
virtual grpc_slice grpc_slice_ref(grpc_slice slice) = 0;
virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
virtual grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) = 0;
virtual void grpc_slice_buffer_add(grpc_slice_buffer* sb,
grpc_slice slice) = 0;
virtual void grpc_slice_buffer_pop(grpc_slice_buffer* sb) = 0;
virtual grpc_slice grpc_slice_from_static_buffer(const void* buffer,
size_t length) = 0;
virtual grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
size_t length) = 0;
virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0;
virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0;
virtual const Status& ok() = 0;
virtual const Status& cancelled() = 0;
virtual gpr_timespec gpr_inf_future(gpr_clock_type type) = 0;
virtual gpr_timespec gpr_time_0(gpr_clock_type type) = 0;
};
extern CoreCodegenInterface* g_core_codegen_interface;
/// Codegen specific version of \a GPR_ASSERT.
#define GPR_CODEGEN_ASSERT(x) \
do { \
if (!(x)) { \
grpc::g_core_codegen_interface->assert_fail(#x, __FILE__, __LINE__); \
} \
} while (0)
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
#define GRPCXX_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
#include <memory>
#include <grpc++/impl/codegen/security/auth_context.h>
#include <grpc/impl/codegen/grpc_types.h>
namespace grpc {
std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_GRPC_LIBRARY_H
#define GRPCXX_IMPL_CODEGEN_GRPC_LIBRARY_H
#include <grpc++/impl/codegen/core_codegen_interface.h>
namespace grpc {
class GrpcLibraryInterface {
public:
virtual void init() = 0;
virtual void shutdown() = 0;
};
/// Initialized by \a grpc::GrpcLibraryInitializer from
/// <grpc++/impl/grpc_library.h>
extern GrpcLibraryInterface* g_glip;
/// Classes that require gRPC to be initialized should inherit from this class.
class GrpcLibraryCodegen {
public:
GrpcLibraryCodegen(bool call_grpc_init = true) : grpc_init_called_(false) {
if (call_grpc_init) {
GPR_CODEGEN_ASSERT(g_glip &&
"gRPC library not initialized. See "
"grpc::internal::GrpcLibraryInitializer.");
g_glip->init();
grpc_init_called_ = true;
}
}
virtual ~GrpcLibraryCodegen() {
if (grpc_init_called_) {
GPR_CODEGEN_ASSERT(g_glip &&
"gRPC library not initialized. See "
"grpc::internal::GrpcLibraryInitializer.");
g_glip->shutdown();
}
}
private:
bool grpc_init_called_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_GRPC_LIBRARY_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_METADATA_MAP_H
#define GRPCXX_IMPL_CODEGEN_METADATA_MAP_H
#include <grpc++/impl/codegen/slice.h>
namespace grpc {
class MetadataMap {
public:
MetadataMap() { memset(&arr_, 0, sizeof(arr_)); }
~MetadataMap() {
g_core_codegen_interface->grpc_metadata_array_destroy(&arr_);
}
void FillMap() {
for (size_t i = 0; i < arr_.count; i++) {
// TODO(yangg) handle duplicates?
map_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
StringRefFromSlice(&arr_.metadata[i].key),
StringRefFromSlice(&arr_.metadata[i].value)));
}
}
std::multimap<grpc::string_ref, grpc::string_ref> *map() { return &map_; }
const std::multimap<grpc::string_ref, grpc::string_ref> *map() const {
return &map_;
}
grpc_metadata_array *arr() { return &arr_; }
private:
grpc_metadata_array arr_;
std::multimap<grpc::string_ref, grpc::string_ref> map_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_METADATA_MAP_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
#define GRPCXX_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/rpc_service_method.h>
#include <grpc++/impl/codegen/sync_stream.h>
namespace grpc {
/// A wrapper class of an application provided rpc method handler.
template <class ServiceType, class RequestType, class ResponseType>
class RpcMethodHandler : public MethodHandler {
public:
RpcMethodHandler(std::function<Status(ServiceType*, ServerContext*,
const RequestType*, ResponseType*)>
func,
ServiceType* service)
: func_(func), service_(service) {}
void RunHandler(const HandlerParameter& param) final {
RequestType req;
Status status =
SerializationTraits<RequestType>::Deserialize(param.request, &req);
ResponseType rsp;
if (status.ok()) {
status = func_(service_, param.server_context, &req, &rsp);
}
GPR_CODEGEN_ASSERT(!param.server_context->sent_initial_metadata_);
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
ops;
ops.SendInitialMetadata(param.server_context->initial_metadata_,
param.server_context->initial_metadata_flags());
if (param.server_context->compression_level_set()) {
ops.set_compression_level(param.server_context->compression_level());
}
if (status.ok()) {
status = ops.SendMessage(rsp);
}
ops.ServerSendStatus(param.server_context->trailing_metadata_, status);
param.call->PerformOps(&ops);
param.call->cq()->Pluck(&ops);
}
private:
/// Application provided rpc handler function.
std::function<Status(ServiceType*, ServerContext*, const RequestType*,
ResponseType*)>
func_;
// The class the above handler function lives in.
ServiceType* service_;
};
/// A wrapper class of an application provided client streaming handler.
template <class ServiceType, class RequestType, class ResponseType>
class ClientStreamingHandler : public MethodHandler {
public:
ClientStreamingHandler(
std::function<Status(ServiceType*, ServerContext*,
ServerReader<RequestType>*, ResponseType*)>
func,
ServiceType* service)
: func_(func), service_(service) {}
void RunHandler(const HandlerParameter& param) final {
ServerReader<RequestType> reader(param.call, param.server_context);
ResponseType rsp;
Status status = func_(service_, param.server_context, &reader, &rsp);
GPR_CODEGEN_ASSERT(!param.server_context->sent_initial_metadata_);
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpServerSendStatus>
ops;
ops.SendInitialMetadata(param.server_context->initial_metadata_,
param.server_context->initial_metadata_flags());
if (param.server_context->compression_level_set()) {
ops.set_compression_level(param.server_context->compression_level());
}
if (status.ok()) {
status = ops.SendMessage(rsp);
}
ops.ServerSendStatus(param.server_context->trailing_metadata_, status);
param.call->PerformOps(&ops);
param.call->cq()->Pluck(&ops);
}
private:
std::function<Status(ServiceType*, ServerContext*, ServerReader<RequestType>*,
ResponseType*)>
func_;
ServiceType* service_;
};
/// A wrapper class of an application provided server streaming handler.
template <class ServiceType, class RequestType, class ResponseType>
class ServerStreamingHandler : public MethodHandler {
public:
ServerStreamingHandler(
std::function<Status(ServiceType*, ServerContext*, const RequestType*,
ServerWriter<ResponseType>*)>
func,
ServiceType* service)
: func_(func), service_(service) {}
void RunHandler(const HandlerParameter& param) final {
RequestType req;
Status status =
SerializationTraits<RequestType>::Deserialize(param.request, &req);
if (status.ok()) {
ServerWriter<ResponseType> writer(param.call, param.server_context);
status = func_(service_, param.server_context, &req, &writer);
}
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> ops;
if (!param.server_context->sent_initial_metadata_) {
ops.SendInitialMetadata(param.server_context->initial_metadata_,
param.server_context->initial_metadata_flags());
if (param.server_context->compression_level_set()) {
ops.set_compression_level(param.server_context->compression_level());
}
}
ops.ServerSendStatus(param.server_context->trailing_metadata_, status);
param.call->PerformOps(&ops);
if (param.server_context->has_pending_ops_) {
param.call->cq()->Pluck(&param.server_context->pending_ops_);
}
param.call->cq()->Pluck(&ops);
}
private:
std::function<Status(ServiceType*, ServerContext*, const RequestType*,
ServerWriter<ResponseType>*)>
func_;
ServiceType* service_;
};
/// A wrapper class of an application provided bidi-streaming handler.
/// This also applies to server-streamed implementation of a unary method
/// with the additional requirement that such methods must have done a
/// write for status to be ok
/// Since this is used by more than 1 class, the service is not passed in.
/// Instead, it is expected to be an implicitly-captured argument of func
/// (through bind or something along those lines)
template <class Streamer, bool WriteNeeded>
class TemplatedBidiStreamingHandler : public MethodHandler {
public:
TemplatedBidiStreamingHandler(
std::function<Status(ServerContext*, Streamer*)> func)
: func_(func), write_needed_(WriteNeeded) {}
void RunHandler(const HandlerParameter& param) final {
Streamer stream(param.call, param.server_context);
Status status = func_(param.server_context, &stream);
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> ops;
if (!param.server_context->sent_initial_metadata_) {
ops.SendInitialMetadata(param.server_context->initial_metadata_,
param.server_context->initial_metadata_flags());
if (param.server_context->compression_level_set()) {
ops.set_compression_level(param.server_context->compression_level());
}
if (write_needed_ && status.ok()) {
// If we needed a write but never did one, we need to mark the
// status as a fail
status = Status(StatusCode::INTERNAL,
"Service did not provide response message");
}
}
ops.ServerSendStatus(param.server_context->trailing_metadata_, status);
param.call->PerformOps(&ops);
if (param.server_context->has_pending_ops_) {
param.call->cq()->Pluck(&param.server_context->pending_ops_);
}
param.call->cq()->Pluck(&ops);
}
private:
std::function<Status(ServerContext*, Streamer*)> func_;
const bool write_needed_;
};
template <class ServiceType, class RequestType, class ResponseType>
class BidiStreamingHandler
: public TemplatedBidiStreamingHandler<
ServerReaderWriter<ResponseType, RequestType>, false> {
public:
BidiStreamingHandler(
std::function<Status(ServiceType*, ServerContext*,
ServerReaderWriter<ResponseType, RequestType>*)>
func,
ServiceType* service)
: TemplatedBidiStreamingHandler<
ServerReaderWriter<ResponseType, RequestType>, false>(std::bind(
func, service, std::placeholders::_1, std::placeholders::_2)) {}
};
template <class RequestType, class ResponseType>
class StreamedUnaryHandler
: public TemplatedBidiStreamingHandler<
ServerUnaryStreamer<RequestType, ResponseType>, true> {
public:
explicit StreamedUnaryHandler(
std::function<Status(ServerContext*,
ServerUnaryStreamer<RequestType, ResponseType>*)>
func)
: TemplatedBidiStreamingHandler<
ServerUnaryStreamer<RequestType, ResponseType>, true>(func) {}
};
template <class RequestType, class ResponseType>
class SplitServerStreamingHandler
: public TemplatedBidiStreamingHandler<
ServerSplitStreamer<RequestType, ResponseType>, false> {
public:
explicit SplitServerStreamingHandler(
std::function<Status(ServerContext*,
ServerSplitStreamer<RequestType, ResponseType>*)>
func)
: TemplatedBidiStreamingHandler<
ServerSplitStreamer<RequestType, ResponseType>, false>(func) {}
};
/// Handle unknown method by returning UNIMPLEMENTED error.
class UnknownMethodHandler : public MethodHandler {
public:
template <class T>
static void FillOps(ServerContext* context, T* ops) {
Status status(StatusCode::UNIMPLEMENTED, "");
if (!context->sent_initial_metadata_) {
ops->SendInitialMetadata(context->initial_metadata_,
context->initial_metadata_flags());
if (context->compression_level_set()) {
ops->set_compression_level(context->compression_level());
}
context->sent_initial_metadata_ = true;
}
ops->ServerSendStatus(context->trailing_metadata_, status);
}
void RunHandler(const HandlerParameter& param) final {
CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> ops;
FillOps(param.server_context, &ops);
param.call->PerformOps(&ops);
param.call->cq()->Pluck(&ops);
}
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_PROTO_UTILS_H
#define GRPCXX_IMPL_CODEGEN_PROTO_UTILS_H
#include <type_traits>
#include <grpc++/impl/codegen/config_protobuf.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/serialization_traits.h>
#include <grpc++/impl/codegen/status.h>
#include <grpc/impl/codegen/byte_buffer_reader.h>
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/impl/codegen/slice.h>
namespace grpc {
extern CoreCodegenInterface* g_core_codegen_interface;
namespace internal {
class GrpcBufferWriterPeer;
const int kGrpcBufferWriterMaxBufferLength = 1024 * 1024;
class GrpcBufferWriter final
: public ::grpc::protobuf::io::ZeroCopyOutputStream {
public:
explicit GrpcBufferWriter(grpc_byte_buffer** bp, int block_size)
: block_size_(block_size), byte_count_(0), have_backup_(false) {
*bp = g_core_codegen_interface->grpc_raw_byte_buffer_create(NULL, 0);
slice_buffer_ = &(*bp)->data.raw.slice_buffer;
}
~GrpcBufferWriter() override {
if (have_backup_) {
g_core_codegen_interface->grpc_slice_unref(backup_slice_);
}
}
bool Next(void** data, int* size) override {
if (have_backup_) {
slice_ = backup_slice_;
have_backup_ = false;
} else {
slice_ = g_core_codegen_interface->grpc_slice_malloc(block_size_);
}
*data = GRPC_SLICE_START_PTR(slice_);
// On win x64, int is only 32bit
GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
byte_count_ += * size = (int)GRPC_SLICE_LENGTH(slice_);
g_core_codegen_interface->grpc_slice_buffer_add(slice_buffer_, slice_);
return true;
}
void BackUp(int count) override {
g_core_codegen_interface->grpc_slice_buffer_pop(slice_buffer_);
if (count == block_size_) {
backup_slice_ = slice_;
} else {
backup_slice_ = g_core_codegen_interface->grpc_slice_split_tail(
&slice_, GRPC_SLICE_LENGTH(slice_) - count);
g_core_codegen_interface->grpc_slice_buffer_add(slice_buffer_, slice_);
}
// It's dangerous to keep an inlined grpc_slice as the backup slice, since
// on a following Next() call, a reference will be returned to this slice
// via GRPC_SLICE_START_PTR, which will not be an adddress held by
// slice_buffer_.
have_backup_ = backup_slice_.refcount != NULL;
byte_count_ -= count;
}
grpc::protobuf::int64 ByteCount() const override { return byte_count_; }
private:
friend class GrpcBufferWriterPeer;
const int block_size_;
int64_t byte_count_;
grpc_slice_buffer* slice_buffer_;
bool have_backup_;
grpc_slice backup_slice_;
grpc_slice slice_;
};
class GrpcBufferReader final
: public ::grpc::protobuf::io::ZeroCopyInputStream {
public:
explicit GrpcBufferReader(grpc_byte_buffer* buffer)
: byte_count_(0), backup_count_(0), status_() {
if (!g_core_codegen_interface->grpc_byte_buffer_reader_init(&reader_,
buffer)) {
status_ = Status(StatusCode::INTERNAL,
"Couldn't initialize byte buffer reader");
}
}
~GrpcBufferReader() override {
g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader_);
}
bool Next(const void** data, int* size) override {
if (!status_.ok()) {
return false;
}
if (backup_count_ > 0) {
*data = GRPC_SLICE_START_PTR(slice_) + GRPC_SLICE_LENGTH(slice_) -
backup_count_;
GPR_CODEGEN_ASSERT(backup_count_ <= INT_MAX);
*size = (int)backup_count_;
backup_count_ = 0;
return true;
}
if (!g_core_codegen_interface->grpc_byte_buffer_reader_next(&reader_,
&slice_)) {
return false;
}
g_core_codegen_interface->grpc_slice_unref(slice_);
*data = GRPC_SLICE_START_PTR(slice_);
// On win x64, int is only 32bit
GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
byte_count_ += * size = (int)GRPC_SLICE_LENGTH(slice_);
return true;
}
Status status() const { return status_; }
void BackUp(int count) override { backup_count_ = count; }
bool Skip(int count) override {
const void* data;
int size;
while (Next(&data, &size)) {
if (size >= count) {
BackUp(size - count);
return true;
}
// size < count;
count -= size;
}
// error or we have too large count;
return false;
}
grpc::protobuf::int64 ByteCount() const override {
return byte_count_ - backup_count_;
}
private:
int64_t byte_count_;
int64_t backup_count_;
grpc_byte_buffer_reader reader_;
grpc_slice slice_;
Status status_;
};
} // namespace internal
template <class T>
class SerializationTraits<T, typename std::enable_if<std::is_base_of<
grpc::protobuf::Message, T>::value>::type> {
public:
static Status Serialize(const grpc::protobuf::Message& msg,
grpc_byte_buffer** bp, bool* own_buffer) {
*own_buffer = true;
int byte_size = msg.ByteSize();
if (byte_size <= internal::kGrpcBufferWriterMaxBufferLength) {
grpc_slice slice = g_core_codegen_interface->grpc_slice_malloc(byte_size);
GPR_CODEGEN_ASSERT(
GRPC_SLICE_END_PTR(slice) ==
msg.SerializeWithCachedSizesToArray(GRPC_SLICE_START_PTR(slice)));
*bp = g_core_codegen_interface->grpc_raw_byte_buffer_create(&slice, 1);
g_core_codegen_interface->grpc_slice_unref(slice);
return g_core_codegen_interface->ok();
} else {
internal::GrpcBufferWriter writer(
bp, internal::kGrpcBufferWriterMaxBufferLength);
return msg.SerializeToZeroCopyStream(&writer)
? g_core_codegen_interface->ok()
: Status(StatusCode::INTERNAL, "Failed to serialize message");
}
}
static Status Deserialize(grpc_byte_buffer* buffer,
grpc::protobuf::Message* msg) {
if (buffer == nullptr) {
return Status(StatusCode::INTERNAL, "No payload");
}
Status result = g_core_codegen_interface->ok();
{
internal::GrpcBufferReader reader(buffer);
if (!reader.status().ok()) {
return reader.status();
}
::grpc::protobuf::io::CodedInputStream decoder(&reader);
decoder.SetTotalBytesLimit(INT_MAX, INT_MAX);
if (!msg->ParseFromCodedStream(&decoder)) {
result = Status(StatusCode::INTERNAL, msg->InitializationErrorString());
}
if (!decoder.ConsumedEntireMessage()) {
result = Status(StatusCode::INTERNAL, "Did not read entire message");
}
}
g_core_codegen_interface->grpc_byte_buffer_destroy(buffer);
return result;
}
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_PROTO_UTILS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_RPC_METHOD_H
#define GRPCXX_IMPL_CODEGEN_RPC_METHOD_H
#include <memory>
#include <grpc++/impl/codegen/channel_interface.h>
namespace grpc {
/// Descriptor of an RPC method
class RpcMethod {
public:
enum RpcType {
NORMAL_RPC = 0,
CLIENT_STREAMING, // request streaming
SERVER_STREAMING, // response streaming
BIDI_STREAMING
};
RpcMethod(const char* name, RpcType type)
: name_(name), method_type_(type), channel_tag_(NULL) {}
RpcMethod(const char* name, RpcType type,
const std::shared_ptr<ChannelInterface>& channel)
: name_(name),
method_type_(type),
channel_tag_(channel->RegisterMethod(name)) {}
const char* name() const { return name_; }
RpcType method_type() const { return method_type_; }
void SetMethodType(RpcType type) { method_type_ = type; }
void* channel_tag() const { return channel_tag_; }
private:
const char* const name_;
RpcType method_type_;
void* const channel_tag_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_RPC_METHOD_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
#define GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
#include <climits>
#include <functional>
#include <map>
#include <memory>
#include <vector>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/rpc_method.h>
#include <grpc++/impl/codegen/status.h>
extern "C" {
struct grpc_byte_buffer;
}
namespace grpc {
class ServerContext;
class StreamContextInterface;
/// Base class for running an RPC handler.
class MethodHandler {
public:
virtual ~MethodHandler() {}
struct HandlerParameter {
HandlerParameter(Call* c, ServerContext* context, grpc_byte_buffer* req)
: call(c), server_context(context), request(req) {}
Call* call;
ServerContext* server_context;
// Handler required to grpc_byte_buffer_destroy this
grpc_byte_buffer* request;
};
virtual void RunHandler(const HandlerParameter& param) = 0;
};
/// Server side rpc method class
class RpcServiceMethod : public RpcMethod {
public:
/// Takes ownership of the handler
RpcServiceMethod(const char* name, RpcMethod::RpcType type,
MethodHandler* handler)
: RpcMethod(name, type), server_tag_(nullptr), handler_(handler) {}
void set_server_tag(void* tag) { server_tag_ = tag; }
void* server_tag() const { return server_tag_; }
/// if MethodHandler is nullptr, then this is an async method
MethodHandler* handler() const { return handler_.get(); }
void ResetHandler() { handler_.reset(); }
void SetHandler(MethodHandler* handler) { handler_.reset(handler); }
private:
void* server_tag_;
std::unique_ptr<MethodHandler> handler_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
#define GRPCXX_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
#include <iterator>
#include <vector>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/string_ref.h>
struct grpc_auth_context;
struct grpc_auth_property;
struct grpc_auth_property_iterator;
namespace grpc {
class SecureAuthContext;
typedef std::pair<grpc::string_ref, grpc::string_ref> AuthProperty;
class AuthPropertyIterator
: public std::iterator<std::input_iterator_tag, const AuthProperty> {
public:
~AuthPropertyIterator();
AuthPropertyIterator& operator++();
AuthPropertyIterator operator++(int);
bool operator==(const AuthPropertyIterator& rhs) const;
bool operator!=(const AuthPropertyIterator& rhs) const;
const AuthProperty operator*();
protected:
AuthPropertyIterator();
AuthPropertyIterator(const grpc_auth_property* property,
const grpc_auth_property_iterator* iter);
private:
friend class SecureAuthContext;
const grpc_auth_property* property_;
// The following items form a grpc_auth_property_iterator.
const grpc_auth_context* ctx_;
size_t index_;
const char* name_;
};
/// Class encapsulating the Authentication Information.
///
/// It includes the secure identity of the peer, the type of secure transport
/// used as well as any other properties required by the authorization layer.
class AuthContext {
public:
virtual ~AuthContext() {}
/// Returns true if the peer is authenticated.
virtual bool IsPeerAuthenticated() const = 0;
/// A peer identity.
///
/// It is, in general, comprised of one or more properties (in which case they
/// have the same name).
virtual std::vector<grpc::string_ref> GetPeerIdentity() const = 0;
virtual grpc::string GetPeerIdentityPropertyName() const = 0;
/// Returns all the property values with the given name.
virtual std::vector<grpc::string_ref> FindPropertyValues(
const grpc::string& name) const = 0;
/// Iteration over all the properties.
virtual AuthPropertyIterator begin() const = 0;
virtual AuthPropertyIterator end() const = 0;
/// Mutation functions: should only be used by an AuthMetadataProcessor.
virtual void AddProperty(const grpc::string& key,
const grpc::string_ref& value) = 0;
virtual bool SetPeerIdentityPropertyName(const grpc::string& name) = 0;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
#define GRPCXX_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
namespace grpc {
/// Defines how to serialize and deserialize some type.
///
/// Used for hooking different message serialization API's into GRPC.
/// Each SerializationTraits implementation must provide the following
/// functions:
/// static Status Serialize(const Message& msg,
/// grpc_byte_buffer** buffer,
/// bool* own_buffer);
/// static Status Deserialize(grpc_byte_buffer* buffer,
/// Message* msg,
/// int max_receive_message_size);
///
/// Serialize is required to convert message to a grpc_byte_buffer, and
/// to store a pointer to that byte buffer at *buffer. *own_buffer should
/// be set to true if the caller owns said byte buffer, or false if
/// ownership is retained elsewhere.
///
/// Deserialize is required to convert buffer into the message stored at
/// msg. max_receive_message_size is passed in as a bound on the maximum
/// number of message bytes Deserialize should accept.
///
/// Both functions return a Status, allowing them to explain what went
/// wrong if required.
template <class Message,
class UnusedButHereForPartialTemplateSpecialization = void>
class SerializationTraits;
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SERIALIZATION_TRAITS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SERVER_CONTEXT_H
#define GRPCXX_IMPL_CODEGEN_SERVER_CONTEXT_H
#include <map>
#include <memory>
#include <vector>
#include <grpc/impl/codegen/compression_types.h>
#include <grpc++/impl/codegen/call.h>
#include <grpc++/impl/codegen/completion_queue_tag.h>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/create_auth_context.h>
#include <grpc++/impl/codegen/metadata_map.h>
#include <grpc++/impl/codegen/security/auth_context.h>
#include <grpc++/impl/codegen/string_ref.h>
#include <grpc++/impl/codegen/time.h>
struct grpc_metadata;
struct grpc_call;
struct census_context;
namespace grpc {
class ClientContext;
template <class W, class R>
class ServerAsyncReader;
template <class W>
class ServerAsyncWriter;
template <class W>
class ServerAsyncResponseWriter;
template <class W, class R>
class ServerAsyncReaderWriter;
template <class R>
class ServerReader;
template <class W>
class ServerWriter;
namespace internal {
template <class W, class R>
class ServerReaderWriterBody;
}
template <class ServiceType, class RequestType, class ResponseType>
class RpcMethodHandler;
template <class ServiceType, class RequestType, class ResponseType>
class ClientStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
class ServerStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
class BidiStreamingHandler;
class UnknownMethodHandler;
class Call;
class CallOpBuffer;
class CompletionQueue;
class Server;
class ServerInterface;
namespace testing {
class InteropServerContextInspector;
class ServerContextTestSpouse;
} // namespace testing
/// A ServerContext allows the person implementing a service handler to:
///
/// - Add custom initial and trailing metadata key-value pairs that will
/// propagated to the client side.
/// - Control call settings such as compression and authentication.
/// - Access metadata coming from the client.
/// - Get performance metrics (ie, census).
///
/// Context settings are only relevant to the call handler they are supplied to,
/// that is to say, they aren't sticky across multiple calls. Some of these
/// settings, such as the compression options, can be made persistant at server
/// construction time by specifying the approriate \a ChannelArguments
/// to a \a grpc::ServerBuilder, via \a ServerBuilder::AddChannelArgument.
///
/// \warning ServerContext instances should \em not be reused across rpcs.
class ServerContext {
public:
ServerContext(); // for async calls
~ServerContext();
/// Return the deadline for the server call.
std::chrono::system_clock::time_point deadline() const {
return Timespec2Timepoint(deadline_);
}
/// Return a \a gpr_timespec representation of the server call's deadline.
gpr_timespec raw_deadline() const { return deadline_; }
/// Add the (\a meta_key, \a meta_value) pair to the initial metadata
/// associated with a server call. These are made available at the client side
/// by the \a grpc::ClientContext::GetServerInitialMetadata() method.
///
/// \warning This method should only be called before sending initial metadata
/// to the client (which can happen explicitly, or implicitly when sending a
/// a response message or status to the client).
///
/// \param meta_key The metadata key. If \a meta_value is binary data, it must
/// end in "-bin".
/// \param meta_value The metadata value. If its value is binary, the key name
/// must end in "-bin".
void AddInitialMetadata(const grpc::string& key, const grpc::string& value);
/// Add the (\a meta_key, \a meta_value) pair to the initial metadata
/// associated with a server call. These are made available at the client
/// side by the \a grpc::ClientContext::GetServerTrailingMetadata() method.
///
/// \warning This method should only be called before sending trailing
/// metadata to the client (which happens when the call is finished and a
/// status is sent to the client).
///
/// \param meta_key The metadata key. If \a meta_value is binary data,
/// it must end in "-bin".
/// \param meta_value The metadata value. If its value is binary, the key name
/// must end in "-bin".
void AddTrailingMetadata(const grpc::string& key, const grpc::string& value);
/// IsCancelled is always safe to call when using sync API.
/// When using async API, it is only safe to call IsCancelled after
/// the AsyncNotifyWhenDone tag has been delivered.
bool IsCancelled() const;
/// Cancel the Call from the server. This is a best-effort API and
/// depending on when it is called, the RPC may still appear successful to
/// the client.
/// For example, if TryCancel() is called on a separate thread, it might race
/// with the server handler which might return success to the client before
/// TryCancel() was even started by the thread.
///
/// It is the caller's responsibility to prevent such races and ensure that if
/// TryCancel() is called, the serverhandler must return Status::CANCELLED.
/// The only exception is that if the serverhandler is already returning an
/// error status code, it is ok to not return Status::CANCELLED even if
/// TryCancel() was called.
void TryCancel() const;
/// Return a collection of initial metadata key-value pairs sent from the
/// client. Note that keys may happen more than
/// once (ie, a \a std::multimap is returned).
///
/// It is safe to use this method after initial metadata has been received,
/// Calls always begin with the client sending initial metadata, so this is
/// safe to access as soon as the call has begun on the server side.
///
/// \return A multimap of initial metadata key-value pairs from the server.
const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata()
const {
return *client_metadata_.map();
}
/// Return the compression algorithm to be used by the server call.
grpc_compression_level compression_level() const {
return compression_level_;
}
/// Set \a algorithm to be the compression algorithm used for the server call.
///
/// \param algorithm The compression algorithm used for the server call.
void set_compression_level(grpc_compression_level level) {
compression_level_set_ = true;
compression_level_ = level;
}
/// Return a bool indicating whether the compression level for this call
/// has been set (either implicitly or through a previous call to
/// \a set_compression_level.
bool compression_level_set() const { return compression_level_set_; }
/// Return the compression algorithm to be used by the server call.
grpc_compression_algorithm compression_algorithm() const {
return compression_algorithm_;
}
/// Set \a algorithm to be the compression algorithm used for the server call.
///
/// \param algorithm The compression algorithm used for the server call.
void set_compression_algorithm(grpc_compression_algorithm algorithm);
/// Set the load reporting costs in \a cost_data for the call.
void SetLoadReportingCosts(const std::vector<grpc::string>& cost_data);
/// Return the authentication context for this server call.
///
/// \see grpc::AuthContext.
std::shared_ptr<const AuthContext> auth_context() const {
if (auth_context_.get() == nullptr) {
auth_context_ = CreateAuthContext(call_);
}
return auth_context_;
}
/// Return the peer uri in a string.
/// WARNING: this value is never authenticated or subject to any security
/// related code. It must not be used for any authentication related
/// functionality. Instead, use auth_context.
grpc::string peer() const;
/// Get the census context associated with this server call.
const struct census_context* census_context() const;
/// Async only. Has to be called before the rpc starts.
/// Returns the tag in completion queue when the rpc finishes.
/// IsCancelled() can then be called to check whether the rpc was cancelled.
void AsyncNotifyWhenDone(void* tag) {
has_notify_when_done_tag_ = true;
async_notify_when_done_tag_ = tag;
}
/// Should be used for framework-level extensions only.
/// Applications never need to call this method.
grpc_call* c_call() { return call_; }
private:
friend class ::grpc::testing::InteropServerContextInspector;
friend class ::grpc::testing::ServerContextTestSpouse;
friend class ::grpc::ServerInterface;
friend class ::grpc::Server;
template <class W, class R>
friend class ::grpc::ServerAsyncReader;
template <class W>
friend class ::grpc::ServerAsyncWriter;
template <class W>
friend class ::grpc::ServerAsyncResponseWriter;
template <class W, class R>
friend class ::grpc::ServerAsyncReaderWriter;
template <class R>
friend class ::grpc::ServerReader;
template <class W>
friend class ::grpc::ServerWriter;
template <class W, class R>
friend class ::grpc::internal::ServerReaderWriterBody;
template <class ServiceType, class RequestType, class ResponseType>
friend class RpcMethodHandler;
template <class ServiceType, class RequestType, class ResponseType>
friend class ClientStreamingHandler;
template <class ServiceType, class RequestType, class ResponseType>
friend class ServerStreamingHandler;
template <class Streamer, bool WriteNeeded>
friend class TemplatedBidiStreamingHandler;
friend class UnknownMethodHandler;
friend class ::grpc::ClientContext;
/// Prevent copying.
ServerContext(const ServerContext&);
ServerContext& operator=(const ServerContext&);
class CompletionOp;
void BeginCompletionOp(Call* call);
/// Return the tag queued by BeginCompletionOp()
CompletionQueueTag* GetCompletionOpTag();
ServerContext(gpr_timespec deadline, grpc_metadata_array* arr);
void set_call(grpc_call* call) { call_ = call; }
uint32_t initial_metadata_flags() const { return 0; }
CompletionOp* completion_op_;
bool has_notify_when_done_tag_;
void* async_notify_when_done_tag_;
gpr_timespec deadline_;
grpc_call* call_;
CompletionQueue* cq_;
bool sent_initial_metadata_;
mutable std::shared_ptr<const AuthContext> auth_context_;
MetadataMap client_metadata_;
std::multimap<grpc::string, grpc::string> initial_metadata_;
std::multimap<grpc::string, grpc::string> trailing_metadata_;
bool compression_level_set_;
grpc_compression_level compression_level_;
grpc_compression_algorithm compression_algorithm_;
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> pending_ops_;
bool has_pending_ops_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SERVER_CONTEXT_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SERVER_INTERFACE_H
#define GRPCXX_IMPL_CODEGEN_SERVER_INTERFACE_H
#include <grpc++/impl/codegen/call_hook.h>
#include <grpc++/impl/codegen/completion_queue_tag.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/rpc_service_method.h>
#include <grpc/impl/codegen/grpc_types.h>
namespace grpc {
class AsyncGenericService;
class Channel;
class GenericServerContext;
class RpcService;
class ServerAsyncStreamingInterface;
class ServerCompletionQueue;
class ServerContext;
class ServerCredentials;
class Service;
class ThreadPoolInterface;
extern CoreCodegenInterface* g_core_codegen_interface;
/// Models a gRPC server.
///
/// Servers are configured and started via \a grpc::ServerBuilder.
class ServerInterface : public CallHook {
public:
virtual ~ServerInterface() {}
/// Shutdown the server, blocking until all rpc processing finishes.
/// Forcefully terminate pending calls after \a deadline expires.
///
/// All completion queue associated with the server (for example, for async
/// serving) must be shutdown *after* this method has returned:
/// See \a ServerBuilder::AddCompletionQueue for details.
///
/// \param deadline How long to wait until pending rpcs are forcefully
/// terminated.
template <class T>
void Shutdown(const T& deadline) {
ShutdownInternal(TimePoint<T>(deadline).raw_time());
}
/// Shutdown the server, waiting for all rpc processing to finish.
///
/// All completion queue associated with the server (for example, for async
/// serving) must be shutdown *after* this method has returned:
/// See \a ServerBuilder::AddCompletionQueue for details.
void Shutdown() {
ShutdownInternal(
g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_MONOTONIC));
}
/// Block waiting for all work to complete.
///
/// \warning The server must be either shutting down or some other thread must
/// call \a Shutdown for this function to ever return.
virtual void Wait() = 0;
protected:
friend class Service;
/// Register a service. This call does not take ownership of the service.
/// The service must exist for the lifetime of the Server instance.
virtual bool RegisterService(const grpc::string* host, Service* service) = 0;
/// Register a generic service. This call does not take ownership of the
/// service. The service must exist for the lifetime of the Server instance.
virtual void RegisterAsyncGenericService(AsyncGenericService* service) = 0;
/// Tries to bind \a server to the given \a addr.
///
/// It can be invoked multiple times.
///
/// \param addr The address to try to bind to the server (eg, localhost:1234,
/// 192.168.1.1:31416, [::1]:27182, etc.).
/// \params creds The credentials associated with the server.
///
/// \return bound port number on sucess, 0 on failure.
///
/// \warning It's an error to call this method on an already started server.
virtual int AddListeningPort(const grpc::string& addr,
ServerCredentials* creds) = 0;
/// Start the server.
///
/// \param cqs Completion queues for handling asynchronous services. The
/// caller is required to keep all completion queues live until the server is
/// destroyed.
/// \param num_cqs How many completion queues does \a cqs hold.
virtual void Start(ServerCompletionQueue** cqs, size_t num_cqs) = 0;
virtual void ShutdownInternal(gpr_timespec deadline) = 0;
virtual int max_receive_message_size() const = 0;
virtual grpc_server* server() = 0;
virtual void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) = 0;
class BaseAsyncRequest : public CompletionQueueTag {
public:
BaseAsyncRequest(ServerInterface* server, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq, void* tag,
bool delete_on_finalize);
virtual ~BaseAsyncRequest();
bool FinalizeResult(void** tag, bool* status) override;
protected:
ServerInterface* const server_;
ServerContext* const context_;
ServerAsyncStreamingInterface* const stream_;
CompletionQueue* const call_cq_;
void* const tag_;
const bool delete_on_finalize_;
grpc_call* call_;
};
class RegisteredAsyncRequest : public BaseAsyncRequest {
public:
RegisteredAsyncRequest(ServerInterface* server, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq, void* tag);
// uses BaseAsyncRequest::FinalizeResult
protected:
void IssueRequest(void* registered_method, grpc_byte_buffer** payload,
ServerCompletionQueue* notification_cq);
};
class NoPayloadAsyncRequest final : public RegisteredAsyncRequest {
public:
NoPayloadAsyncRequest(void* registered_method, ServerInterface* server,
ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag)
: RegisteredAsyncRequest(server, context, stream, call_cq, tag) {
IssueRequest(registered_method, nullptr, notification_cq);
}
// uses RegisteredAsyncRequest::FinalizeResult
};
template <class Message>
class PayloadAsyncRequest final : public RegisteredAsyncRequest {
public:
PayloadAsyncRequest(void* registered_method, ServerInterface* server,
ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag,
Message* request)
: RegisteredAsyncRequest(server, context, stream, call_cq, tag),
registered_method_(registered_method),
server_(server),
context_(context),
stream_(stream),
call_cq_(call_cq),
notification_cq_(notification_cq),
tag_(tag),
request_(request) {
IssueRequest(registered_method, &payload_, notification_cq);
}
bool FinalizeResult(void** tag, bool* status) override {
if (*status) {
if (payload_ == nullptr ||
!SerializationTraits<Message>::Deserialize(payload_, request_)
.ok()) {
// If deserialization fails, we cancel the call and instantiate
// a new instance of ourselves to request another call. We then
// return false, which prevents the call from being returned to
// the application.
g_core_codegen_interface->grpc_call_cancel_with_status(
call_, GRPC_STATUS_INTERNAL, "Unable to parse request", nullptr);
g_core_codegen_interface->grpc_call_unref(call_);
new PayloadAsyncRequest(registered_method_, server_, context_,
stream_, call_cq_, notification_cq_, tag_,
request_);
delete this;
return false;
}
}
return RegisteredAsyncRequest::FinalizeResult(tag, status);
}
private:
void* const registered_method_;
ServerInterface* const server_;
ServerContext* const context_;
ServerAsyncStreamingInterface* const stream_;
CompletionQueue* const call_cq_;
ServerCompletionQueue* const notification_cq_;
void* const tag_;
Message* const request_;
grpc_byte_buffer* payload_;
};
class GenericAsyncRequest : public BaseAsyncRequest {
public:
GenericAsyncRequest(ServerInterface* server, GenericServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag,
bool delete_on_finalize);
bool FinalizeResult(void** tag, bool* status) override;
private:
grpc_call_details call_details_;
};
template <class Message>
void RequestAsyncCall(RpcServiceMethod* method, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag,
Message* message) {
GPR_CODEGEN_ASSERT(method);
new PayloadAsyncRequest<Message>(method->server_tag(), this, context,
stream, call_cq, notification_cq, tag,
message);
}
void RequestAsyncCall(RpcServiceMethod* method, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag) {
GPR_CODEGEN_ASSERT(method);
new NoPayloadAsyncRequest(method->server_tag(), this, context, stream,
call_cq, notification_cq, tag);
}
void RequestAsyncGenericCall(GenericServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
new GenericAsyncRequest(this, context, stream, call_cq, notification_cq,
tag, true);
}
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SERVER_INTERFACE_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
#define GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/rpc_service_method.h>
#include <grpc++/impl/codegen/serialization_traits.h>
#include <grpc++/impl/codegen/server_interface.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
class Call;
class CompletionQueue;
class Server;
class ServerInterface;
class ServerCompletionQueue;
class ServerContext;
class ServerAsyncStreamingInterface {
public:
virtual ~ServerAsyncStreamingInterface() {}
/// Request notification of the sending of initial metadata to the client.
/// Completion will be notified by \a tag on the associated completion
/// queue. This call is optional, but if it is used, it cannot be used
/// concurrently with or after the \a Finish method.
///
/// \param[in] tag Tag identifying this request.
virtual void SendInitialMetadata(void* tag) = 0;
private:
friend class ServerInterface;
virtual void BindCall(Call* call) = 0;
};
/// Desriptor of an RPC service and its various RPC methods
class Service {
public:
Service() : server_(nullptr) {}
virtual ~Service() {}
bool has_async_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (*it && (*it)->handler() == nullptr) {
return true;
}
}
return false;
}
bool has_synchronous_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (*it && (*it)->handler() != nullptr) {
return true;
}
}
return false;
}
bool has_generic_methods() const {
for (auto it = methods_.begin(); it != methods_.end(); ++it) {
if (it->get() == nullptr) {
return true;
}
}
return false;
}
protected:
template <class Message>
void RequestAsyncUnary(int index, ServerContext* context, Message* request,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq, void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag, request);
}
void RequestAsyncClientStreaming(int index, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag);
}
template <class Message>
void RequestAsyncServerStreaming(int index, ServerContext* context,
Message* request,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag, request);
}
void RequestAsyncBidiStreaming(int index, ServerContext* context,
ServerAsyncStreamingInterface* stream,
CompletionQueue* call_cq,
ServerCompletionQueue* notification_cq,
void* tag) {
server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
notification_cq, tag);
}
void AddMethod(RpcServiceMethod* method) { methods_.emplace_back(method); }
void MarkMethodAsync(int index) {
GPR_CODEGEN_ASSERT(
methods_[index].get() != nullptr &&
"Cannot mark the method as 'async' because it has already been "
"marked as 'generic'.");
methods_[index]->ResetHandler();
}
void MarkMethodGeneric(int index) {
GPR_CODEGEN_ASSERT(
methods_[index]->handler() != nullptr &&
"Cannot mark the method as 'generic' because it has already been "
"marked as 'async'.");
methods_[index].reset();
}
void MarkMethodStreamed(int index, MethodHandler* streamed_method) {
GPR_CODEGEN_ASSERT(methods_[index] && methods_[index]->handler() &&
"Cannot mark an async or generic method Streamed");
methods_[index]->SetHandler(streamed_method);
// From the server's point of view, streamed unary is a special
// case of BIDI_STREAMING that has 1 read and 1 write, in that order,
// and split server-side streaming is BIDI_STREAMING with 1 read and
// any number of writes, in that order.
methods_[index]->SetMethodType(::grpc::RpcMethod::BIDI_STREAMING);
}
private:
friend class Server;
friend class ServerInterface;
ServerInterface* server_;
std::vector<std::unique_ptr<RpcServiceMethod>> methods_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SLICE_H
#define GRPCXX_IMPL_CODEGEN_SLICE_H
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/string_ref.h>
namespace grpc {
inline grpc::string_ref StringRefFromSlice(const grpc_slice* slice) {
return grpc::string_ref(
reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(*slice)),
GRPC_SLICE_LENGTH(*slice));
}
inline grpc::string StringFromCopiedSlice(grpc_slice slice) {
return grpc::string(reinterpret_cast<char*>(GRPC_SLICE_START_PTR(slice)),
GRPC_SLICE_LENGTH(slice));
}
inline grpc_slice SliceReferencingString(const grpc::string& str) {
return g_core_codegen_interface->grpc_slice_from_static_buffer(str.data(),
str.length());
}
inline grpc_slice SliceFromCopiedString(const grpc::string& str) {
return g_core_codegen_interface->grpc_slice_from_copied_buffer(str.data(),
str.length());
}
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SLICE_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_STATUS_H
#define GRPCXX_IMPL_CODEGEN_STATUS_H
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/status_code_enum.h>
namespace grpc {
/// Did it work? If it didn't, why?
///
/// See \a grpc::StatusCode for details on the available code and their meaning.
class Status {
public:
/// Construct an OK instance.
Status() : code_(StatusCode::OK) {}
/// Construct an instance with associated \a code and \a error_message.
/// It is an error to construct an OK status with non-empty \a error_message.
Status(StatusCode code, const grpc::string& error_message)
: code_(code), error_message_(error_message) {}
/// Construct an instance with \a code, \a error_message and
/// \a error_details. It is an error to construct an OK status with non-empty
/// \a error_message and/or \a error_details.
Status(StatusCode code, const grpc::string& error_message,
const grpc::string& error_details)
: code_(code),
error_message_(error_message),
binary_error_details_(error_details) {}
// Pre-defined special status objects.
/// An OK pre-defined instance.
static const Status& OK;
/// A CANCELLED pre-defined instance.
static const Status& CANCELLED;
/// Return the instance's error code.
StatusCode error_code() const { return code_; }
/// Return the instance's error message.
grpc::string error_message() const { return error_message_; }
/// Return the (binary) error details.
// Usually it contains a serialized google.rpc.Status proto.
grpc::string error_details() const { return binary_error_details_; }
/// Is the status OK?
bool ok() const { return code_ == StatusCode::OK; }
// Ignores any errors. This method does nothing except potentially suppress
// complaints from any tools that are checking that errors are not dropped on
// the floor.
void IgnoreError() const {}
private:
StatusCode code_;
grpc::string error_message_;
grpc::string binary_error_details_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_STATUS_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_STATUS_CODE_ENUM_H
#define GRPCXX_IMPL_CODEGEN_STATUS_CODE_ENUM_H
namespace grpc {
enum StatusCode {
/// Not an error; returned on success.
OK = 0,
/// The operation was cancelled (typically by the caller).
CANCELLED = 1,
/// Unknown error. An example of where this error may be returned is if a
/// Status value received from another address space belongs to an error-space
/// that is not known in this address space. Also errors raised by APIs that
/// do not return enough error information may be converted to this error.
UNKNOWN = 2,
/// Client specified an invalid argument. Note that this differs from
/// FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are
/// problematic regardless of the state of the system (e.g., a malformed file
/// name).
INVALID_ARGUMENT = 3,
/// Deadline expired before operation could complete. For operations that
/// change the state of the system, this error may be returned even if the
/// operation has completed successfully. For example, a successful response
/// from a server could have been delayed long enough for the deadline to
/// expire.
DEADLINE_EXCEEDED = 4,
/// Some requested entity (e.g., file or directory) was not found.
NOT_FOUND = 5,
/// Some entity that we attempted to create (e.g., file or directory) already
/// exists.
ALREADY_EXISTS = 6,
/// The caller does not have permission to execute the specified operation.
/// PERMISSION_DENIED must not be used for rejections caused by exhausting
/// some resource (use RESOURCE_EXHAUSTED instead for those errors).
/// PERMISSION_DENIED must not be used if the caller can not be identified
/// (use UNAUTHENTICATED instead for those errors).
PERMISSION_DENIED = 7,
/// The request does not have valid authentication credentials for the
/// operation.
UNAUTHENTICATED = 16,
/// Some resource has been exhausted, perhaps a per-user quota, or perhaps the
/// entire file system is out of space.
RESOURCE_EXHAUSTED = 8,
/// Operation was rejected because the system is not in a state required for
/// the operation's execution. For example, directory to be deleted may be
/// non-empty, an rmdir operation is applied to a non-directory, etc.
///
/// A litmus test that may help a service implementor in deciding
/// between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
/// (a) Use UNAVAILABLE if the client can retry just the failing call.
/// (b) Use ABORTED if the client should retry at a higher-level
/// (e.g., restarting a read-modify-write sequence).
/// (c) Use FAILED_PRECONDITION if the client should not retry until
/// the system state has been explicitly fixed. E.g., if an "rmdir"
/// fails because the directory is non-empty, FAILED_PRECONDITION
/// should be returned since the client should not retry unless
/// they have first fixed up the directory by deleting files from it.
/// (d) Use FAILED_PRECONDITION if the client performs conditional
/// REST Get/Update/Delete on a resource and the resource on the
/// server does not match the condition. E.g., conflicting
/// read-modify-write on the same resource.
FAILED_PRECONDITION = 9,
/// The operation was aborted, typically due to a concurrency issue like
/// sequencer check failures, transaction aborts, etc.
///
/// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
/// and UNAVAILABLE.
ABORTED = 10,
/// Operation was attempted past the valid range. E.g., seeking or reading
/// past end of file.
///
/// Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed
/// if the system state changes. For example, a 32-bit file system will
/// generate INVALID_ARGUMENT if asked to read at an offset that is not in the
/// range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from
/// an offset past the current file size.
///
/// There is a fair bit of overlap between FAILED_PRECONDITION and
/// OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)
/// when it applies so that callers who are iterating through a space can
/// easily look for an OUT_OF_RANGE error to detect when they are done.
OUT_OF_RANGE = 11,
/// Operation is not implemented or not supported/enabled in this service.
UNIMPLEMENTED = 12,
/// Internal errors. Means some invariants expected by underlying System has
/// been broken. If you see one of these errors, Something is very broken.
INTERNAL = 13,
/// The service is currently unavailable. This is a most likely a transient
/// condition and may be corrected by retrying with a backoff.
///
/// \warning Although data MIGHT not have been transmitted when this
/// status occurs, there is NOT A GUARANTEE that the server has not seen
/// anything. So in general it is unsafe to retry on this status code
/// if the call is non-idempotent.
///
/// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
/// and UNAVAILABLE.
UNAVAILABLE = 14,
/// Unrecoverable data loss or corruption.
DATA_LOSS = 15,
/// Force users to include a default branch:
DO_NOT_USE = -1
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_STATUS_CODE_ENUM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_STRING_REF_H
#define GRPCXX_IMPL_CODEGEN_STRING_REF_H
#include <string.h>
#include <algorithm>
#include <iosfwd>
#include <iostream>
#include <iterator>
#include <grpc++/impl/codegen/config.h>
namespace grpc {
/// This class is a non owning reference to a string.
///
/// It should be a strict subset of the upcoming std::string_ref.
///
/// \see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
///
/// The constexpr is dropped or replaced with const for legacy compiler
/// compatibility.
class string_ref {
public:
/// types
typedef const char* const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
/// constants
const static size_t npos;
/// construct/copy.
string_ref() : data_(nullptr), length_(0) {}
string_ref(const string_ref& other)
: data_(other.data_), length_(other.length_) {}
string_ref& operator=(const string_ref& rhs) {
data_ = rhs.data_;
length_ = rhs.length_;
return *this;
}
string_ref(const char* s) : data_(s), length_(strlen(s)) {}
string_ref(const char* s, size_t l) : data_(s), length_(l) {}
string_ref(const grpc::string& s) : data_(s.data()), length_(s.length()) {}
/// iterators
const_iterator begin() const { return data_; }
const_iterator end() const { return data_ + length_; }
const_iterator cbegin() const { return data_; }
const_iterator cend() const { return data_ + length_; }
const_reverse_iterator rbegin() const {
return const_reverse_iterator(end());
}
const_reverse_iterator rend() const {
return const_reverse_iterator(begin());
}
const_reverse_iterator crbegin() const {
return const_reverse_iterator(end());
}
const_reverse_iterator crend() const {
return const_reverse_iterator(begin());
}
/// capacity
size_t size() const { return length_; }
size_t length() const { return length_; }
size_t max_size() const { return length_; }
bool empty() const { return length_ == 0; }
/// element access
const char* data() const { return data_; }
/// string operations
int compare(string_ref x) const {
size_t min_size = length_ < x.length_ ? length_ : x.length_;
int r = memcmp(data_, x.data_, min_size);
if (r < 0) return -1;
if (r > 0) return 1;
if (length_ < x.length_) return -1;
if (length_ > x.length_) return 1;
return 0;
}
bool starts_with(string_ref x) const {
return length_ >= x.length_ && (memcmp(data_, x.data_, x.length_) == 0);
}
bool ends_with(string_ref x) const {
return length_ >= x.length_ &&
(memcmp(data_ + (length_ - x.length_), x.data_, x.length_) == 0);
}
size_t find(string_ref s) const {
auto it = std::search(cbegin(), cend(), s.cbegin(), s.cend());
return it == cend() ? npos : std::distance(cbegin(), it);
}
size_t find(char c) const {
auto it = std::find(cbegin(), cend(), c);
return it == cend() ? npos : std::distance(cbegin(), it);
}
string_ref substr(size_t pos, size_t n = npos) const {
if (pos > length_) pos = length_;
if (n > (length_ - pos)) n = length_ - pos;
return string_ref(data_ + pos, n);
}
private:
const char* data_;
size_t length_;
};
/// Comparison operators
inline bool operator==(string_ref x, string_ref y) { return x.compare(y) == 0; }
inline bool operator!=(string_ref x, string_ref y) { return x.compare(y) != 0; }
inline bool operator<(string_ref x, string_ref y) { return x.compare(y) < 0; }
inline bool operator<=(string_ref x, string_ref y) { return x.compare(y) <= 0; }
inline bool operator>(string_ref x, string_ref y) { return x.compare(y) > 0; }
inline bool operator>=(string_ref x, string_ref y) { return x.compare(y) >= 0; }
inline std::ostream& operator<<(std::ostream& out, const string_ref& string) {
return out << grpc::string(string.begin(), string.end());
}
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_STRING_REF_H

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linx64/include/grpc++/impl/codegen/stub_options.h
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@@ -1,29 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_STUB_OPTIONS_H
#define GRPCXX_IMPL_CODEGEN_STUB_OPTIONS_H
namespace grpc {
/// Useful interface for generated stubs
class StubOptions {};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_STUB_OPTIONS_H

853
linx64/include/grpc++/impl/codegen/sync_stream.h
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@@ -1,853 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_SYNC_STREAM_H
#define GRPCXX_IMPL_CODEGEN_SYNC_STREAM_H
#include <grpc++/impl/codegen/call.h>
#include <grpc++/impl/codegen/channel_interface.h>
#include <grpc++/impl/codegen/client_context.h>
#include <grpc++/impl/codegen/completion_queue.h>
#include <grpc++/impl/codegen/core_codegen_interface.h>
#include <grpc++/impl/codegen/server_context.h>
#include <grpc++/impl/codegen/service_type.h>
#include <grpc++/impl/codegen/status.h>
namespace grpc {
/// Common interface for all synchronous client side streaming.
class ClientStreamingInterface {
public:
virtual ~ClientStreamingInterface() {}
/// Block waiting until the stream finishes and a final status of the call is
/// available.
///
/// It is appropriate to call this method when both:
/// * the calling code (client-side) has no more message to send
/// (this can be declared implicitly by calling this method, or
/// explicitly through an earlier call to <i>WritesDone</i> method of the
/// class in use, e.g. \a ClientWriterInterface::WritesDone or
/// \a ClientReaderWriterInterface::WritesDone).
/// * there are no more messages to be received from the server (which can
/// be known implicitly, or explicitly from an earlier call to \a
/// ReaderInterface::Read that returned "false").
///
/// This function will return either:
/// - when all incoming messages have been read and the server has
/// returned status.
/// - when the server has returned a non-OK status.
/// - OR when the call failed for some reason and the library generated a
/// status.
///
/// Return values:
/// - \a Status contains the status code, message and details for the call
/// - the \a ClientContext associated with this call is updated with
/// possible trailing metadata sent from the server.
virtual Status Finish() = 0;
};
/// Common interface for all synchronous server side streaming.
class ServerStreamingInterface {
public:
virtual ~ServerStreamingInterface() {}
/// Block to send initial metadata to client.
/// This call is optional, but if it is used, it cannot be used concurrently
/// with or after the \a Finish method.
///
/// The initial metadata that will be sent to the client will be
/// taken from the \a ServerContext associated with the call.
virtual void SendInitialMetadata() = 0;
};
/// An interface that yields a sequence of messages of type \a R.
template <class R>
class ReaderInterface {
public:
virtual ~ReaderInterface() {}
/// Get an upper bound on the next message size available for reading on this
/// stream.
virtual bool NextMessageSize(uint32_t* sz) = 0;
/// Block to read a message and parse to \a msg. Returns \a true on success.
/// This is thread-safe with respect to \a Write or \WritesDone methods on
/// the same stream. It should not be called concurrently with another \a
/// Read on the same stream as the order of delivery will not be defined.
///
/// \param[out] msg The read message.
///
/// \return \a false when there will be no more incoming messages, either
/// because the other side has called \a WritesDone() or the stream has failed
/// (or been cancelled).
virtual bool Read(R* msg) = 0;
};
/// An interface that can be fed a sequence of messages of type \a W.
template <class W>
class WriterInterface {
public:
virtual ~WriterInterface() {}
/// Block to write \a msg to the stream with WriteOptions \a options.
/// This is thread-safe with respect to \a ReaderInterface::Read
///
/// \param msg The message to be written to the stream.
/// \param options The WriteOptions affecting the write operation.
///
/// \return \a true on success, \a false when the stream has been closed.
virtual bool Write(const W& msg, WriteOptions options) = 0;
/// Block to write \a msg to the stream with default write options.
/// This is thread-safe with respect to \a ReaderInterface::Read
///
/// \param msg The message to be written to the stream.
///
/// \return \a true on success, \a false when the stream has been closed.
inline bool Write(const W& msg) { return Write(msg, WriteOptions()); }
/// Write \a msg and coalesce it with the writing of trailing metadata, using
/// WriteOptions \a options.
///
/// For client, WriteLast is equivalent of performing Write and WritesDone in
/// a single step. \a msg and trailing metadata are coalesced and sent on wire
/// by calling this function. For server, WriteLast buffers the \a msg.
/// The writing of \a msg is held until the service handler returns,
/// where \a msg and trailing metadata are coalesced and sent on wire.
/// Note that WriteLast can only buffer \a msg up to the flow control window
/// size. If \a msg size is larger than the window size, it will be sent on
/// wire without buffering.
///
/// \param[in] msg The message to be written to the stream.
/// \param[in] options The WriteOptions to be used to write this message.
void WriteLast(const W& msg, WriteOptions options) {
Write(msg, options.set_last_message());
}
};
/// Client-side interface for streaming reads of message of type \a R.
template <class R>
class ClientReaderInterface : public ClientStreamingInterface,
public ReaderInterface<R> {
public:
/// Block to wait for initial metadata from server. The received metadata
/// can only be accessed after this call returns. Should only be called before
/// the first read. Calling this method is optional, and if it is not called
/// the metadata will be available in ClientContext after the first read.
virtual void WaitForInitialMetadata() = 0;
};
/// Synchronous (blocking) client-side API for doing server-streaming RPCs,
/// where the stream of messages coming from the server has messages
/// of type \a R.
template <class R>
class ClientReader final : public ClientReaderInterface<R> {
public:
/// Block to create a stream and write the initial metadata and \a request
/// out. Note that \a context will be used to fill in custom initial
/// metadata used to send to the server when starting the call.
template <class W>
ClientReader(ChannelInterface* channel, const RpcMethod& method,
ClientContext* context, const W& request)
: context_(context),
cq_(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK,
GRPC_CQ_DEFAULT_POLLING}), // Pluckable cq
call_(channel->CreateCall(method, context, &cq_)) {
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpClientSendClose>
ops;
ops.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
// TODO(ctiller): don't assert
GPR_CODEGEN_ASSERT(ops.SendMessage(request).ok());
ops.ClientSendClose();
call_.PerformOps(&ops);
cq_.Pluck(&ops);
}
/// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
/// semantics.
///
// Side effect:
/// Once complete, the initial metadata read from
/// the server will be accessable through the \a ClientContext used to
/// construct this object.
void WaitForInitialMetadata() override {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
CallOpSet<CallOpRecvInitialMetadata> ops;
ops.RecvInitialMetadata(context_);
call_.PerformOps(&ops);
cq_.Pluck(&ops); /// status ignored
}
bool NextMessageSize(uint32_t* sz) override {
*sz = call_.max_receive_message_size();
return true;
}
/// See the \a ReaderInterface.Read method for semantics.
/// Side effect:
/// This also receives initial metadata from the server, if not
/// already received (if initial metadata is received, it can be then
/// accessed through the \a ClientContext associated with this call).
bool Read(R* msg) override {
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> ops;
if (!context_->initial_metadata_received_) {
ops.RecvInitialMetadata(context_);
}
ops.RecvMessage(msg);
call_.PerformOps(&ops);
return cq_.Pluck(&ops) && ops.got_message;
}
/// See the \a ClientStreamingInterface.Finish method for semantics.
///
/// Side effect:
/// The \a ClientContext associated with this call is updated with
/// possible metadata received from the server.
Status Finish() override {
CallOpSet<CallOpClientRecvStatus> ops;
Status status;
ops.ClientRecvStatus(context_, &status);
call_.PerformOps(&ops);
GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
return status;
}
private:
ClientContext* context_;
CompletionQueue cq_;
Call call_;
};
/// Client-side interface for streaming writes of message type \a W.
template <class W>
class ClientWriterInterface : public ClientStreamingInterface,
public WriterInterface<W> {
public:
/// Half close writing from the client. (signal that the stream of messages
/// coming from the clinet is complete).
/// Blocks until currently-pending writes are completed.
/// Thread safe with respect to \a ReaderInterface::Read operations only
///
/// \return Whether the writes were successful.
virtual bool WritesDone() = 0;
};
/// Synchronous (blocking) client-side API for doing client-streaming RPCs,
/// where the outgoing message stream coming from the client has messages of
/// type \a W.
template <class W>
class ClientWriter : public ClientWriterInterface<W> {
public:
/// Block to create a stream (i.e. send request headers and other initial
/// metadata to the server). Note that \a context will be used to fill
/// in custom initial metadata. \a response will be filled in with the
/// single expected response message from the server upon a successful
/// call to the \a Finish method of this instance.
template <class R>
ClientWriter(ChannelInterface* channel, const RpcMethod& method,
ClientContext* context, R* response)
: context_(context),
cq_(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK,
GRPC_CQ_DEFAULT_POLLING}), // Pluckable cq
call_(channel->CreateCall(method, context, &cq_)) {
finish_ops_.RecvMessage(response);
finish_ops_.AllowNoMessage();
if (!context_->initial_metadata_corked_) {
CallOpSet<CallOpSendInitialMetadata> ops;
ops.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
call_.PerformOps(&ops);
cq_.Pluck(&ops);
}
}
/// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
/// semantics.
///
// Side effect:
/// Once complete, the initial metadata read from the server will be
/// accessable through the \a ClientContext used to construct this object.
void WaitForInitialMetadata() {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
CallOpSet<CallOpRecvInitialMetadata> ops;
ops.RecvInitialMetadata(context_);
call_.PerformOps(&ops);
cq_.Pluck(&ops); // status ignored
}
/// See the WriterInterface.Write(const W& msg, WriteOptions options) method
/// for semantics.
///
/// Side effect:
/// Also sends initial metadata if not already sent (using the
/// \a ClientContext associated with this call).
using WriterInterface<W>::Write;
bool Write(const W& msg, WriteOptions options) override {
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpClientSendClose>
ops;
if (options.is_last_message()) {
options.set_buffer_hint();
ops.ClientSendClose();
}
if (context_->initial_metadata_corked_) {
ops.SendInitialMetadata(context_->send_initial_metadata_,
context_->initial_metadata_flags());
context_->set_initial_metadata_corked(false);
}
if (!ops.SendMessage(msg, options).ok()) {
return false;
}
call_.PerformOps(&ops);
return cq_.Pluck(&ops);
}
bool WritesDone() override {
CallOpSet<CallOpClientSendClose> ops;
ops.ClientSendClose();
call_.PerformOps(&ops);
return cq_.Pluck(&ops);
}
/// See the ClientStreamingInterface.Finish method for semantics.
/// Side effects:
/// - Also receives initial metadata if not already received.
/// - Attempts to fill in the \a response parameter passed
/// to the constructor of this instance with the response
/// message from the server.
Status Finish() override {
Status status;
if (!context_->initial_metadata_received_) {
finish_ops_.RecvInitialMetadata(context_);
}
finish_ops_.ClientRecvStatus(context_, &status);
call_.PerformOps(&finish_ops_);
GPR_CODEGEN_ASSERT(cq_.Pluck(&finish_ops_));
return status;
}
private:
ClientContext* context_;
CallOpSet<CallOpRecvInitialMetadata, CallOpGenericRecvMessage,
CallOpClientRecvStatus>
finish_ops_;
CompletionQueue cq_;
Call call_;
};
/// Client-side interface for bi-directional streaming with
/// client-to-server stream messages of type \a W and
/// server-to-client stream messages of type \a R.
template <class W, class R>
class ClientReaderWriterInterface : public ClientStreamingInterface,
public WriterInterface<W>,
public ReaderInterface<R> {
public:
/// Block to wait for initial metadata from server. The received metadata
/// can only be accessed after this call returns. Should only be called before
/// the first read. Calling this method is optional, and if it is not called
/// the metadata will be available in ClientContext after the first read.
virtual void WaitForInitialMetadata() = 0;
/// Half close writing from the client. (signal that the stream of messages
/// coming from the clinet is complete).
/// Blocks until currently-pending writes are completed.
/// Thread-safe with respect to \a ReaderInterface::Read
///
/// \return Whether the writes were successful.
virtual bool WritesDone() = 0;
};
/// Synchronous (blocking) client-side API for bi-directional streaming RPCs,
/// where the outgoing message stream coming from the client has messages of
/// type \a W, and the incoming messages stream coming from the server has
/// messages of type \a R.
template <class W, class R>
class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
public:
/// Block to create a stream and write the initial metadata and \a request
/// out. Note that \a context will be used to fill in custom initial metadata
/// used to send to the server when starting the call.
ClientReaderWriter(ChannelInterface* channel, const RpcMethod& method,
ClientContext* context)
: context_(context),
cq_(grpc_completion_queue_attributes{
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK,
GRPC_CQ_DEFAULT_POLLING}), // Pluckable cq
call_(channel->CreateCall(method, context, &cq_)) {
if (!context_->initial_metadata_corked_) {
CallOpSet<CallOpSendInitialMetadata> ops;
ops.SendInitialMetadata(context->send_initial_metadata_,
context->initial_metadata_flags());
call_.PerformOps(&ops);
cq_.Pluck(&ops);
}
}
/// Block waiting to read initial metadata from the server.
/// This call is optional, but if it is used, it cannot be used concurrently
/// with or after the \a Finish method.
///
/// Once complete, the initial metadata read from the server will be
/// accessable through the \a ClientContext used to construct this object.
void WaitForInitialMetadata() override {
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
CallOpSet<CallOpRecvInitialMetadata> ops;
ops.RecvInitialMetadata(context_);
call_.PerformOps(&ops);
cq_.Pluck(&ops); // status ignored
}
bool NextMessageSize(uint32_t* sz) override {
*sz = call_.max_receive_message_size();
return true;
}
/// See the \a ReaderInterface.Read method for semantics.
/// Side effect:
/// Also receives initial metadata if not already received (updates the \a
/// ClientContext associated with this call in that case).
bool Read(R* msg) override {
CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> ops;
if (!context_->initial_metadata_received_) {
ops.RecvInitialMetadata(context_);
}
ops.RecvMessage(msg);
call_.PerformOps(&ops);
return cq_.Pluck(&ops) && ops.got_message;
}
/// See the \a WriterInterface.Write method for semantics.
///
/// Side effect:
/// Also sends initial metadata if not already sent (using the
/// \a ClientContext associated with this call to fill in values).
using WriterInterface<W>::Write;
bool Write(const W& msg, WriteOptions options) override {
CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
CallOpClientSendClose>
ops;
if (options.is_last_message()) {
options.set_buffer_hint();
ops.ClientSendClose();
}
if (context_->initial_metadata_corked_) {
ops.SendInitialMetadata(context_->send_initial_metadata_,
context_->initial_metadata_flags());
context_->set_initial_metadata_corked(false);
}
if (!ops.SendMessage(msg, options).ok()) {
return false;
}
call_.PerformOps(&ops);
return cq_.Pluck(&ops);
}
bool WritesDone() override {
CallOpSet<CallOpClientSendClose> ops;
ops.ClientSendClose();
call_.PerformOps(&ops);
return cq_.Pluck(&ops);
}
/// See the ClientStreamingInterface.Finish method for semantics.
///
/// Side effect:
/// - the \a ClientContext associated with this call is updated with
/// possible trailing metadata sent from the server.
Status Finish() override {
CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> ops;
if (!context_->initial_metadata_received_) {
ops.RecvInitialMetadata(context_);
}
Status status;
ops.ClientRecvStatus(context_, &status);
call_.PerformOps(&ops);
GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
return status;
}
private:
ClientContext* context_;
CompletionQueue cq_;
Call call_;
};
/// Server-side interface for streaming reads of message of type \a R.
template <class R>
class ServerReaderInterface : public ServerStreamingInterface,
public ReaderInterface<R> {};
/// Synchronous (blocking) server-side API for doing client-streaming RPCs,
/// where the incoming message stream coming from the client has messages of
/// type \a R.
template <class R>
class ServerReader final : public ServerReaderInterface<R> {
public:
ServerReader(Call* call, ServerContext* ctx) : call_(call), ctx_(ctx) {}
/// See the \a ServerStreamingInterface.SendInitialMetadata method
/// for semantics. Note that initial metadata will be affected by the
/// \a ServerContext associated with this call.
void SendInitialMetadata() override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
CallOpSet<CallOpSendInitialMetadata> ops;
ops.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ops.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_->PerformOps(&ops);
call_->cq()->Pluck(&ops);
}
bool NextMessageSize(uint32_t* sz) override {
*sz = call_->max_receive_message_size();
return true;
}
bool Read(R* msg) override {
CallOpSet<CallOpRecvMessage<R>> ops;
ops.RecvMessage(msg);
call_->PerformOps(&ops);
return call_->cq()->Pluck(&ops) && ops.got_message;
}
private:
Call* const call_;
ServerContext* const ctx_;
};
/// Server-side interface for streaming writes of message of type \a W.
template <class W>
class ServerWriterInterface : public ServerStreamingInterface,
public WriterInterface<W> {};
/// Synchronous (blocking) server-side API for doing for doing a
/// server-streaming RPCs, where the outgoing message stream coming from the
/// server has messages of type \a W.
template <class W>
class ServerWriter final : public ServerWriterInterface<W> {
public:
ServerWriter(Call* call, ServerContext* ctx) : call_(call), ctx_(ctx) {}
/// See the \a ServerStreamingInterface.SendInitialMetadata method
/// for semantics.
/// Note that initial metadata will be affected by the
/// \a ServerContext associated with this call.
void SendInitialMetadata() override {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
CallOpSet<CallOpSendInitialMetadata> ops;
ops.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ops.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_->PerformOps(&ops);
call_->cq()->Pluck(&ops);
}
/// See the \a WriterInterface.Write method for semantics.
///
/// Side effect:
/// Also sends initial metadata if not already sent (using the
/// \a ClientContext associated with this call to fill in values).
using WriterInterface<W>::Write;
bool Write(const W& msg, WriteOptions options) override {
if (options.is_last_message()) {
options.set_buffer_hint();
}
if (!ctx_->pending_ops_.SendMessage(msg, options).ok()) {
return false;
}
if (!ctx_->sent_initial_metadata_) {
ctx_->pending_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
call_->PerformOps(&ctx_->pending_ops_);
// if this is the last message we defer the pluck until AFTER we start
// the trailing md op. This prevents hangs. See
// https://github.com/grpc/grpc/issues/11546
if (options.is_last_message()) {
ctx_->has_pending_ops_ = true;
return true;
}
ctx_->has_pending_ops_ = false;
return call_->cq()->Pluck(&ctx_->pending_ops_);
}
private:
Call* const call_;
ServerContext* const ctx_;
};
/// Server-side interface for bi-directional streaming.
template <class W, class R>
class ServerReaderWriterInterface : public ServerStreamingInterface,
public WriterInterface<W>,
public ReaderInterface<R> {};
/// Actual implementation of bi-directional streaming
namespace internal {
template <class W, class R>
class ServerReaderWriterBody final {
public:
ServerReaderWriterBody(Call* call, ServerContext* ctx)
: call_(call), ctx_(ctx) {}
void SendInitialMetadata() {
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
CallOpSet<CallOpSendInitialMetadata> ops;
ops.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ops.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
call_->PerformOps(&ops);
call_->cq()->Pluck(&ops);
}
bool NextMessageSize(uint32_t* sz) {
*sz = call_->max_receive_message_size();
return true;
}
bool Read(R* msg) {
CallOpSet<CallOpRecvMessage<R>> ops;
ops.RecvMessage(msg);
call_->PerformOps(&ops);
return call_->cq()->Pluck(&ops) && ops.got_message;
}
bool Write(const W& msg, WriteOptions options) {
if (options.is_last_message()) {
options.set_buffer_hint();
}
if (!ctx_->pending_ops_.SendMessage(msg, options).ok()) {
return false;
}
if (!ctx_->sent_initial_metadata_) {
ctx_->pending_ops_.SendInitialMetadata(ctx_->initial_metadata_,
ctx_->initial_metadata_flags());
if (ctx_->compression_level_set()) {
ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
}
ctx_->sent_initial_metadata_ = true;
}
call_->PerformOps(&ctx_->pending_ops_);
// if this is the last message we defer the pluck until AFTER we start
// the trailing md op. This prevents hangs. See
// https://github.com/grpc/grpc/issues/11546
if (options.is_last_message()) {
ctx_->has_pending_ops_ = true;
return true;
}
ctx_->has_pending_ops_ = false;
return call_->cq()->Pluck(&ctx_->pending_ops_);
}
private:
Call* const call_;
ServerContext* const ctx_;
};
} // namespace internal
/// Synchronous (blocking) server-side API for a bidirectional
/// streaming call, where the incoming message stream coming from the client has
/// messages of type \a R, and the outgoing message streaming coming from
/// the server has messages of type \a W.
template <class W, class R>
class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> {
public:
ServerReaderWriter(Call* call, ServerContext* ctx) : body_(call, ctx) {}
/// See the \a ServerStreamingInterface.SendInitialMetadata method
/// for semantics. Note that initial metadata will be affected by the
/// \a ServerContext associated with this call.
void SendInitialMetadata() override { body_.SendInitialMetadata(); }
bool NextMessageSize(uint32_t* sz) override {
return body_.NextMessageSize(sz);
}
bool Read(R* msg) override { return body_.Read(msg); }
/// See the \a WriterInterface.Write(const W& msg, WriteOptions options)
/// method for semantics.
/// Side effect:
/// Also sends initial metadata if not already sent (using the \a
/// ServerContext associated with this call).
using WriterInterface<W>::Write;
bool Write(const W& msg, WriteOptions options) override {
return body_.Write(msg, options);
}
private:
internal::ServerReaderWriterBody<W, R> body_;
};
/// A class to represent a flow-controlled unary call. This is something
/// of a hybrid between conventional unary and streaming. This is invoked
/// through a unary call on the client side, but the server responds to it
/// as though it were a single-ping-pong streaming call. The server can use
/// the \a NextMessageSize method to determine an upper-bound on the size of
/// the message. A key difference relative to streaming: ServerUnaryStreamer
/// must have exactly 1 Read and exactly 1 Write, in that order, to function
/// correctly. Otherwise, the RPC is in error.
template <class RequestType, class ResponseType>
class ServerUnaryStreamer final
: public ServerReaderWriterInterface<ResponseType, RequestType> {
public:
ServerUnaryStreamer(Call* call, ServerContext* ctx)
: body_(call, ctx), read_done_(false), write_done_(false) {}
/// Block to send initial metadata to client.
/// Implicit input parameter:
/// - the \a ServerContext associated with this call will be used for
/// sending initial metadata.
void SendInitialMetadata() override { body_.SendInitialMetadata(); }
/// Get an upper bound on the request message size from the client.
bool NextMessageSize(uint32_t* sz) override {
return body_.NextMessageSize(sz);
}
/// Read a message of type \a R into \a msg. Completion will be notified by \a
/// tag on the associated completion queue.
/// This is thread-safe with respect to \a Write or \a WritesDone methods. It
/// should not be called concurrently with other streaming APIs
/// on the same stream. It is not meaningful to call it concurrently
/// with another \a ReaderInterface::Read on the same stream since reads on
/// the same stream are delivered in order.
///
/// \param[out] msg Where to eventually store the read message.
/// \param[in] tag The tag identifying the operation.
bool Read(RequestType* request) override {
if (read_done_) {
return false;
}
read_done_ = true;
return body_.Read(request);
}
/// Block to write \a msg to the stream with WriteOptions \a options.
/// This is thread-safe with respect to \a ReaderInterface::Read
///
/// \param msg The message to be written to the stream.
/// \param options The WriteOptions affecting the write operation.
///
/// \return \a true on success, \a false when the stream has been closed.
using WriterInterface<ResponseType>::Write;
bool Write(const ResponseType& response, WriteOptions options) override {
if (write_done_ || !read_done_) {
return false;
}
write_done_ = true;
return body_.Write(response, options);
}
private:
internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
bool read_done_;
bool write_done_;
};
/// A class to represent a flow-controlled server-side streaming call.
/// This is something of a hybrid between server-side and bidi streaming.
/// This is invoked through a server-side streaming call on the client side,
/// but the server responds to it as though it were a bidi streaming call that
/// must first have exactly 1 Read and then any number of Writes.
template <class RequestType, class ResponseType>
class ServerSplitStreamer final
: public ServerReaderWriterInterface<ResponseType, RequestType> {
public:
ServerSplitStreamer(Call* call, ServerContext* ctx)
: body_(call, ctx), read_done_(false) {}
/// Block to send initial metadata to client.
/// Implicit input parameter:
/// - the \a ServerContext associated with this call will be used for
/// sending initial metadata.
void SendInitialMetadata() override { body_.SendInitialMetadata(); }
/// Get an upper bound on the request message size from the client.
bool NextMessageSize(uint32_t* sz) override {
return body_.NextMessageSize(sz);
}
/// Read a message of type \a R into \a msg. Completion will be notified by \a
/// tag on the associated completion queue.
/// This is thread-safe with respect to \a Write or \a WritesDone methods. It
/// should not be called concurrently with other streaming APIs
/// on the same stream. It is not meaningful to call it concurrently
/// with another \a ReaderInterface::Read on the same stream since reads on
/// the same stream are delivered in order.
///
/// \param[out] msg Where to eventually store the read message.
/// \param[in] tag The tag identifying the operation.
bool Read(RequestType* request) override {
if (read_done_) {
return false;
}
read_done_ = true;
return body_.Read(request);
}
/// Block to write \a msg to the stream with WriteOptions \a options.
/// This is thread-safe with respect to \a ReaderInterface::Read
///
/// \param msg The message to be written to the stream.
/// \param options The WriteOptions affecting the write operation.
///
/// \return \a true on success, \a false when the stream has been closed.
using WriterInterface<ResponseType>::Write;
bool Write(const ResponseType& response, WriteOptions options) override {
return read_done_ && body_.Write(response, options);
}
private:
internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
bool read_done_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_SYNC_STREAM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_CODEGEN_TIME_H
#define GRPCXX_IMPL_CODEGEN_TIME_H
#include <grpc++/impl/codegen/config.h>
#include <grpc/impl/codegen/grpc_types.h>
namespace grpc {
/** If you are trying to use CompletionQueue::AsyncNext with a time class that
isn't either gpr_timespec or std::chrono::system_clock::time_point, you
will most likely be looking at this comment as your compiler will have
fired an error below. In order to fix this issue, you have two potential
solutions:
1. Use gpr_timespec or std::chrono::system_clock::time_point instead
2. Specialize the TimePoint class with whichever time class that you
want to use here. See below for two examples of how to do this.
*/
template <typename T>
class TimePoint {
public:
TimePoint(const T& time) { you_need_a_specialization_of_TimePoint(); }
gpr_timespec raw_time() {
gpr_timespec t;
return t;
}
private:
void you_need_a_specialization_of_TimePoint();
};
template <>
class TimePoint<gpr_timespec> {
public:
TimePoint(const gpr_timespec& time) : time_(time) {}
gpr_timespec raw_time() { return time_; }
private:
gpr_timespec time_;
};
} // namespace grpc
#include <chrono>
#include <grpc/impl/codegen/grpc_types.h>
namespace grpc {
// from and to should be absolute time.
void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
gpr_timespec* to);
void TimepointHR2Timespec(
const std::chrono::high_resolution_clock::time_point& from,
gpr_timespec* to);
std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
template <>
class TimePoint<std::chrono::system_clock::time_point> {
public:
TimePoint(const std::chrono::system_clock::time_point& time) {
Timepoint2Timespec(time, &time_);
}
gpr_timespec raw_time() const { return time_; }
private:
gpr_timespec time_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CODEGEN_TIME_H

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@@ -1,61 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_GRPC_LIBRARY_H
#define GRPCXX_IMPL_GRPC_LIBRARY_H
#include <iostream>
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/core_codegen.h>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc/grpc.h>
namespace grpc {
namespace internal {
class GrpcLibrary final : public GrpcLibraryInterface {
public:
void init() override { grpc_init(); }
void shutdown() override { grpc_shutdown(); }
};
static GrpcLibrary g_gli;
static CoreCodegen g_core_codegen;
/// Instantiating this class ensures the proper initialization of gRPC.
class GrpcLibraryInitializer final {
public:
GrpcLibraryInitializer() {
if (grpc::g_glip == nullptr) {
grpc::g_glip = &g_gli;
}
if (grpc::g_core_codegen_interface == nullptr) {
grpc::g_core_codegen_interface = &g_core_codegen;
}
}
/// A no-op method to force the linker to reference this class, which will
/// take care of initializing and shutting down the gRPC runtime.
int summon() { return 0; }
};
} // namespace internal
} // namespace grpc
#endif // GRPCXX_IMPL_GRPC_LIBRARY_H

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linx64/include/grpc++/impl/method_handler_impl.h
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_METHOD_HANDLER_IMPL_H
#define GRPCXX_IMPL_METHOD_HANDLER_IMPL_H
#include <grpc++/impl/codegen/method_handler_impl.h>
#endif // GRPCXX_IMPL_METHOD_HANDLER_IMPL_H

24
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_RPC_METHOD_H
#define GRPCXX_IMPL_RPC_METHOD_H
#include <grpc++/impl/codegen/rpc_method.h>
#endif // GRPCXX_IMPL_RPC_METHOD_H

24
linx64/include/grpc++/impl/rpc_service_method.h
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_RPC_SERVICE_METHOD_H
#define GRPCXX_IMPL_RPC_SERVICE_METHOD_H
#include <grpc++/impl/codegen/rpc_service_method.h>
#endif // GRPCXX_IMPL_RPC_SERVICE_METHOD_H

24
linx64/include/grpc++/impl/serialization_traits.h
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_SERIALIZATION_TRAITS_H
#define GRPCXX_IMPL_SERIALIZATION_TRAITS_H
#include <grpc++/impl/codegen/serialization_traits.h>
#endif // GRPCXX_IMPL_SERIALIZATION_TRAITS_H

43
linx64/include/grpc++/impl/server_builder_option.h
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@@ -1,43 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_SERVER_BUILDER_OPTION_H
#define GRPCXX_IMPL_SERVER_BUILDER_OPTION_H
#include <map>
#include <memory>
#include <grpc++/impl/server_builder_plugin.h>
#include <grpc++/support/channel_arguments.h>
namespace grpc {
/// Interface to pass an option to a \a ServerBuilder.
class ServerBuilderOption {
public:
virtual ~ServerBuilderOption() {}
/// Alter the \a ChannelArguments used to create the gRPC server.
virtual void UpdateArguments(ChannelArguments* args) = 0;
/// Alter the ServerBuilderPlugin map that will be added into ServerBuilder.
virtual void UpdatePlugins(
std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) = 0;
};
} // namespace grpc
#endif // GRPCXX_IMPL_SERVER_BUILDER_OPTION_H

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@@ -1,65 +0,0 @@
/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_SERVER_BUILDER_PLUGIN_H
#define GRPCXX_IMPL_SERVER_BUILDER_PLUGIN_H
#include <memory>
#include <grpc++/support/config.h>
namespace grpc {
class ServerBuilder;
class ServerInitializer;
class ChannelArguments;
/// This interface is meant for internal usage only. Implementations of this
/// interface should add themselves to a \a ServerBuilder instance through the
/// \a InternalAddPluginFactory method.
class ServerBuilderPlugin {
public:
virtual ~ServerBuilderPlugin() {}
virtual grpc::string name() = 0;
/// UpdateServerBuilder will be called at the beginning of
/// \a ServerBuilder::BuildAndStart().
virtual void UpdateServerBuilder(ServerBuilder* builder) {}
/// InitServer will be called in ServerBuilder::BuildAndStart(), after the
/// Server instance is created.
virtual void InitServer(ServerInitializer* si) = 0;
/// Finish will be called at the end of ServerBuilder::BuildAndStart().
virtual void Finish(ServerInitializer* si) = 0;
/// ChangeArguments is an interface that can be used in
/// ServerBuilderOption::UpdatePlugins
virtual void ChangeArguments(const grpc::string& name, void* value) = 0;
/// UpdateChannelArguments will be called in ServerBuilder::BuildAndStart(),
/// before the Server instance is created.
virtual void UpdateChannelArguments(ChannelArguments* args) {}
virtual bool has_sync_methods() const { return false; }
virtual bool has_async_methods() const { return false; }
};
} // namespace grpc
#endif // GRPCXX_IMPL_SERVER_BUILDER_PLUGIN_H

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linx64/include/grpc++/impl/server_initializer.h
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@@ -1,55 +0,0 @@
/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_SERVER_INITIALIZER_H
#define GRPCXX_IMPL_SERVER_INITIALIZER_H
#include <memory>
#include <vector>
#include <grpc++/server.h>
namespace grpc {
class Server;
class Service;
class ServerInitializer {
public:
ServerInitializer(Server* server) : server_(server) {}
bool RegisterService(std::shared_ptr<Service> service) {
if (!server_->RegisterService(nullptr, service.get())) {
return false;
}
default_services_.push_back(service);
return true;
}
const std::vector<grpc::string>* GetServiceList() {
return &server_->services_;
}
private:
Server* server_;
std::vector<std::shared_ptr<Service> > default_services_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_SERVER_INITIALIZER_H

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linx64/include/grpc++/impl/service_type.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_IMPL_SERVICE_TYPE_H
#define GRPCXX_IMPL_SERVICE_TYPE_H
#include <grpc++/impl/codegen/service_type.h>
#endif // GRPCXX_IMPL_SERVICE_TYPE_H

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linx64/include/grpc++/resource_quota.h
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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_RESOURCE_QUOTA_H
#define GRPCXX_RESOURCE_QUOTA_H
struct grpc_resource_quota;
#include <grpc++/impl/codegen/config.h>
#include <grpc++/impl/codegen/grpc_library.h>
namespace grpc {
/// ResourceQuota represents a bound on memory usage by the gRPC library.
/// A ResourceQuota can be attached to a server (via \a ServerBuilder),
/// or a client channel (via \a ChannelArguments).
/// gRPC will attempt to keep memory used by all attached entities
/// below the ResourceQuota bound.
class ResourceQuota final : private GrpcLibraryCodegen {
public:
/// \param name - a unique name for this ResourceQuota.
explicit ResourceQuota(const grpc::string& name);
ResourceQuota();
~ResourceQuota();
/// Resize this \a ResourceQuota to a new size. If \a new_size is smaller
/// than the current size of the pool, memory usage will be monotonically
/// decreased until it falls under \a new_size.
/// No time bound is given for this to occur however.
ResourceQuota& Resize(size_t new_size);
grpc_resource_quota* c_resource_quota() const { return impl_; }
private:
ResourceQuota(const ResourceQuota& rhs);
ResourceQuota& operator=(const ResourceQuota& rhs);
grpc_resource_quota* const impl_;
};
} // namespace grpc
#endif // GRPCXX_RESOURCE_QUOTA_H

24
linx64/include/grpc++/security/auth_context.h
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@@ -1,24 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SECURITY_AUTH_CONTEXT_H
#define GRPCXX_SECURITY_AUTH_CONTEXT_H
#include <grpc++/impl/codegen/security/auth_context.h>
#endif // GRPCXX_SECURITY_AUTH_CONTEXT_H

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linx64/include/grpc++/security/auth_metadata_processor.h
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@@ -1,61 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H
#define GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H
#include <map>
#include <grpc++/security/auth_context.h>
#include <grpc++/support/status.h>
#include <grpc++/support/string_ref.h>
namespace grpc {
/// Interface allowing custom server-side authorization based on credentials
/// encoded in metadata. Objects of this type can be passed to
/// \a ServerCredentials::SetAuthMetadataProcessor().
class AuthMetadataProcessor {
public:
typedef std::multimap<grpc::string_ref, grpc::string_ref> InputMetadata;
typedef std::multimap<grpc::string, grpc::string> OutputMetadata;
virtual ~AuthMetadataProcessor() {}
/// If this method returns true, the \a Process function will be scheduled in
/// a different thread from the one processing the call.
virtual bool IsBlocking() const { return true; }
/// context is read/write: it contains the properties of the channel peer and
/// it is the job of the Process method to augment it with properties derived
/// from the passed-in auth_metadata.
/// consumed_auth_metadata needs to be filled with metadata that has been
/// consumed by the processor and will be removed from the call.
/// response_metadata is the metadata that will be sent as part of the
/// response.
/// If the return value is not Status::OK, the rpc call will be aborted with
/// the error code and error message sent back to the client.
virtual Status Process(const InputMetadata& auth_metadata,
AuthContext* context,
OutputMetadata* consumed_auth_metadata,
OutputMetadata* response_metadata) = 0;
};
} // namespace grpc
#endif // GRPCXX_SECURITY_AUTH_METADATA_PROCESSOR_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SECURITY_CREDENTIALS_H
#define GRPCXX_SECURITY_CREDENTIALS_H
#include <map>
#include <memory>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc++/security/auth_context.h>
#include <grpc++/support/status.h>
#include <grpc++/support/string_ref.h>
struct grpc_call;
namespace grpc {
class ChannelArguments;
class Channel;
class SecureChannelCredentials;
class CallCredentials;
class SecureCallCredentials;
/// A channel credentials object encapsulates all the state needed by a client
/// to authenticate with a server for a given channel.
/// It can make various assertions, e.g., about the client’s identity, role
/// for all the calls on that channel.
///
/// \see https://grpc.io/docs/guides/auth.html
class ChannelCredentials : private GrpcLibraryCodegen {
public:
ChannelCredentials();
~ChannelCredentials();
protected:
friend std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
const std::shared_ptr<ChannelCredentials>& channel_creds,
const std::shared_ptr<CallCredentials>& call_creds);
virtual SecureChannelCredentials* AsSecureCredentials() = 0;
private:
friend std::shared_ptr<Channel> CreateCustomChannel(
const grpc::string& target,
const std::shared_ptr<ChannelCredentials>& creds,
const ChannelArguments& args);
virtual std::shared_ptr<Channel> CreateChannel(
const grpc::string& target, const ChannelArguments& args) = 0;
};
/// A call credentials object encapsulates the state needed by a client to
/// authenticate with a server for a given call on a channel.
///
/// \see https://grpc.io/docs/guides/auth.html
class CallCredentials : private GrpcLibraryCodegen {
public:
CallCredentials();
~CallCredentials();
/// Apply this instance's credentials to \a call.
virtual bool ApplyToCall(grpc_call* call) = 0;
protected:
friend std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
const std::shared_ptr<ChannelCredentials>& channel_creds,
const std::shared_ptr<CallCredentials>& call_creds);
friend std::shared_ptr<CallCredentials> CompositeCallCredentials(
const std::shared_ptr<CallCredentials>& creds1,
const std::shared_ptr<CallCredentials>& creds2);
virtual SecureCallCredentials* AsSecureCredentials() = 0;
};
/// Options used to build SslCredentials.
struct SslCredentialsOptions {
/// The buffer containing the PEM encoding of the server root certificates. If
/// this parameter is empty, the default roots will be used. The default
/// roots can be overridden using the \a GRPC_DEFAULT_SSL_ROOTS_FILE_PATH
/// environment variable pointing to a file on the file system containing the
/// roots.
grpc::string pem_root_certs;
/// The buffer containing the PEM encoding of the client's private key. This
/// parameter can be empty if the client does not have a private key.
grpc::string pem_private_key;
/// The buffer containing the PEM encoding of the client's certificate chain.
/// This parameter can be empty if the client does not have a certificate
/// chain.
grpc::string pem_cert_chain;
};
// Factories for building different types of Credentials The functions may
// return empty shared_ptr when credentials cannot be created. If a
// Credentials pointer is returned, it can still be invalid when used to create
// a channel. A lame channel will be created then and all rpcs will fail on it.
/// Builds credentials with reasonable defaults.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<ChannelCredentials> GoogleDefaultCredentials();
/// Builds SSL Credentials given SSL specific options
std::shared_ptr<ChannelCredentials> SslCredentials(
const SslCredentialsOptions& options);
/// Builds credentials for use when running in GCE
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleComputeEngineCredentials();
/// Constant for maximum auth token lifetime.
constexpr long kMaxAuthTokenLifetimeSecs = 3600;
/// Builds Service Account JWT Access credentials.
/// json_key is the JSON key string containing the client's private key.
/// token_lifetime_seconds is the lifetime in seconds of each Json Web Token
/// (JWT) created with this credentials. It should not exceed
/// \a kMaxAuthTokenLifetimeSecs or will be cropped to this value.
std::shared_ptr<CallCredentials> ServiceAccountJWTAccessCredentials(
const grpc::string& json_key,
long token_lifetime_seconds = kMaxAuthTokenLifetimeSecs);
/// Builds refresh token credentials.
/// json_refresh_token is the JSON string containing the refresh token along
/// with a client_id and client_secret.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleRefreshTokenCredentials(
const grpc::string& json_refresh_token);
/// Builds access token credentials.
/// access_token is an oauth2 access token that was fetched using an out of band
/// mechanism.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> AccessTokenCredentials(
const grpc::string& access_token);
/// Builds IAM credentials.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleIAMCredentials(
const grpc::string& authorization_token,
const grpc::string& authority_selector);
/// Combines a channel credentials and a call credentials into a composite
/// channel credentials.
std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
const std::shared_ptr<ChannelCredentials>& channel_creds,
const std::shared_ptr<CallCredentials>& call_creds);
/// Combines two call credentials objects into a composite call credentials.
std::shared_ptr<CallCredentials> CompositeCallCredentials(
const std::shared_ptr<CallCredentials>& creds1,
const std::shared_ptr<CallCredentials>& creds2);
/// Credentials for an unencrypted, unauthenticated channel
std::shared_ptr<ChannelCredentials> InsecureChannelCredentials();
/// Credentials for a channel using Cronet.
std::shared_ptr<ChannelCredentials> CronetChannelCredentials(void* engine);
/// User defined metadata credentials.
class MetadataCredentialsPlugin {
public:
virtual ~MetadataCredentialsPlugin() {}
/// If this method returns true, the Process function will be scheduled in
/// a different thread from the one processing the call.
virtual bool IsBlocking() const { return true; }
/// Type of credentials this plugin is implementing.
virtual const char* GetType() const { return ""; }
/// Gets the auth metatada produced by this plugin.
/// The fully qualified method name is:
/// service_url + "/" + method_name.
/// The channel_auth_context contains (among other things), the identity of
/// the server.
virtual Status GetMetadata(
grpc::string_ref service_url, grpc::string_ref method_name,
const AuthContext& channel_auth_context,
std::multimap<grpc::string, grpc::string>* metadata) = 0;
};
std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
std::unique_ptr<MetadataCredentialsPlugin> plugin);
} // namespace grpc
#endif // GRPCXX_SECURITY_CREDENTIALS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SECURITY_SERVER_CREDENTIALS_H
#define GRPCXX_SECURITY_SERVER_CREDENTIALS_H
#include <memory>
#include <vector>
#include <grpc++/security/auth_metadata_processor.h>
#include <grpc++/support/config.h>
#include <grpc/grpc_security_constants.h>
struct grpc_server;
namespace grpc {
class Server;
/// Wrapper around \a grpc_server_credentials, a way to authenticate a server.
class ServerCredentials {
public:
virtual ~ServerCredentials();
/// This method is not thread-safe and has to be called before the server is
/// started. The last call to this function wins.
virtual void SetAuthMetadataProcessor(
const std::shared_ptr<AuthMetadataProcessor>& processor) = 0;
private:
friend class ::grpc::Server;
/// Tries to bind \a server to the given \a addr (eg, localhost:1234,
/// 192.168.1.1:31416, [::1]:27182, etc.)
///
/// \return bound port number on sucess, 0 on failure.
// TODO(dgq): the "port" part seems to be a misnomer.
virtual int AddPortToServer(const grpc::string& addr,
grpc_server* server) = 0;
};
/// Options to create ServerCredentials with SSL
struct SslServerCredentialsOptions {
/// \warning Deprecated
SslServerCredentialsOptions()
: force_client_auth(false),
client_certificate_request(GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE) {}
SslServerCredentialsOptions(
grpc_ssl_client_certificate_request_type request_type)
: force_client_auth(false), client_certificate_request(request_type) {}
struct PemKeyCertPair {
grpc::string private_key;
grpc::string cert_chain;
};
grpc::string pem_root_certs;
std::vector<PemKeyCertPair> pem_key_cert_pairs;
/// \warning Deprecated
bool force_client_auth;
/// If both \a force_client_auth and \a client_certificate_request
/// fields are set, \a force_client_auth takes effect, i.e.
/// \a REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
/// will be enforced.
grpc_ssl_client_certificate_request_type client_certificate_request;
};
/// Builds SSL ServerCredentials given SSL specific options
std::shared_ptr<ServerCredentials> SslServerCredentials(
const SslServerCredentialsOptions& options);
/// Builds insecure server credentials.
std::shared_ptr<ServerCredentials> InsecureServerCredentials();
} // namespace grpc
#endif // GRPCXX_SECURITY_SERVER_CREDENTIALS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SERVER_H
#define GRPCXX_SERVER_H
#include <condition_variable>
#include <list>
#include <memory>
#include <mutex>
#include <vector>
#include <grpc++/completion_queue.h>
#include <grpc++/impl/call.h>
#include <grpc++/impl/codegen/grpc_library.h>
#include <grpc++/impl/codegen/server_interface.h>
#include <grpc++/impl/rpc_service_method.h>
#include <grpc++/security/server_credentials.h>
#include <grpc++/support/channel_arguments.h>
#include <grpc++/support/config.h>
#include <grpc++/support/status.h>
#include <grpc/compression.h>
struct grpc_server;
namespace grpc {
class AsyncGenericService;
class HealthCheckServiceInterface;
class ServerContext;
class ServerInitializer;
/// Represents a gRPC server.
///
/// Use a \a grpc::ServerBuilder to create, configure, and start
/// \a Server instances.
class Server final : public ServerInterface, private GrpcLibraryCodegen {
public:
~Server();
/// Block until the server shuts down.
///
/// \warning The server must be either shutting down or some other thread must
/// call \a Shutdown for this function to ever return.
void Wait() override;
/// Global callbacks are a set of hooks that are called when server
/// events occur. \a SetGlobalCallbacks method is used to register
/// the hooks with gRPC. Note that
/// the \a GlobalCallbacks instance will be shared among all
/// \a Server instances in an application and can be set exactly
/// once per application.
class GlobalCallbacks {
public:
virtual ~GlobalCallbacks() {}
/// Called before server is created.
virtual void UpdateArguments(ChannelArguments* args) {}
/// Called before application callback for each synchronous server request
virtual void PreSynchronousRequest(ServerContext* context) = 0;
/// Called after application callback for each synchronous server request
virtual void PostSynchronousRequest(ServerContext* context) = 0;
/// Called before server is started.
virtual void PreServerStart(Server* server) {}
/// Called after a server port is added.
virtual void AddPort(Server* server, const grpc::string& addr,
ServerCredentials* creds, int port) {}
};
/// Set the global callback object. Can only be called once per application.
/// Does not take ownership of callbacks, and expects the pointed to object
/// to be alive until all server objects in the process have been destroyed.
/// The same \a GlobalCallbacks object will be used throughout the
/// application and is shared among all \a Server objects.
static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
// Returns a \em raw pointer to the underlying \a grpc_server instance.
grpc_server* c_server();
/// Returns the health check service.
HealthCheckServiceInterface* GetHealthCheckService() const {
return health_check_service_.get();
}
/// Establish a channel for in-process communication
std::shared_ptr<Channel> InProcessChannel(const ChannelArguments& args);
private:
friend class AsyncGenericService;
friend class ServerBuilder;
friend class ServerInitializer;
class SyncRequest;
class AsyncRequest;
class ShutdownRequest;
/// SyncRequestThreadManager is an implementation of ThreadManager. This class
/// is responsible for polling for incoming RPCs and calling the RPC handlers.
/// This is only used in case of a Sync server (i.e a server exposing a sync
/// interface)
class SyncRequestThreadManager;
class UnimplementedAsyncRequestContext;
class UnimplementedAsyncRequest;
class UnimplementedAsyncResponse;
/// Server constructors. To be used by \a ServerBuilder only.
///
/// \param max_message_size Maximum message length that the channel can
/// receive.
///
/// \param args The channel args
///
/// \param sync_server_cqs The completion queues to use if the server is a
/// synchronous server (or a hybrid server). The server polls for new RPCs on
/// these queues
///
/// \param min_pollers The minimum number of polling threads per server
/// completion queue (in param sync_server_cqs) to use for listening to
/// incoming requests (used only in case of sync server)
///
/// \param max_pollers The maximum number of polling threads per server
/// completion queue (in param sync_server_cqs) to use for listening to
/// incoming requests (used only in case of sync server)
///
/// \param sync_cq_timeout_msec The timeout to use when calling AsyncNext() on
/// server completion queues passed via sync_server_cqs param.
Server(int max_message_size, ChannelArguments* args,
std::shared_ptr<std::vector<std::unique_ptr<ServerCompletionQueue>>>
sync_server_cqs,
int min_pollers, int max_pollers, int sync_cq_timeout_msec);
/// Register a service. This call does not take ownership of the service.
/// The service must exist for the lifetime of the Server instance.
bool RegisterService(const grpc::string* host, Service* service) override;
/// Register a generic service. This call does not take ownership of the
/// service. The service must exist for the lifetime of the Server instance.
void RegisterAsyncGenericService(AsyncGenericService* service) override;
/// Try binding the server to the given \a addr endpoint
/// (port, and optionally including IP address to bind to).
///
/// It can be invoked multiple times. Should be used before
/// starting the server.
///
/// \param addr The address to try to bind to the server (eg, localhost:1234,
/// 192.168.1.1:31416, [::1]:27182, etc.).
/// \param creds The credentials associated with the server.
///
/// \return bound port number on success, 0 on failure.
///
/// \warning It is an error to call this method on an already started server.
int AddListeningPort(const grpc::string& addr,
ServerCredentials* creds) override;
/// Start the server.
///
/// \param cqs Completion queues for handling asynchronous services. The
/// caller is required to keep all completion queues live until the server is
/// destroyed.
/// \param num_cqs How many completion queues does \a cqs hold.
void Start(ServerCompletionQueue** cqs, size_t num_cqs) override;
void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override;
void ShutdownInternal(gpr_timespec deadline) override;
int max_receive_message_size() const override {
return max_receive_message_size_;
};
grpc_server* server() override { return server_; };
ServerInitializer* initializer();
const int max_receive_message_size_;
/// The following completion queues are ONLY used in case of Sync API
/// i.e. if the server has any services with sync methods. The server uses
/// these completion queues to poll for new RPCs
std::shared_ptr<std::vector<std::unique_ptr<ServerCompletionQueue>>>
sync_server_cqs_;
/// List of \a ThreadManager instances (one for each cq in
/// the \a sync_server_cqs)
std::vector<std::unique_ptr<SyncRequestThreadManager>> sync_req_mgrs_;
// Sever status
std::mutex mu_;
bool started_;
bool shutdown_;
bool shutdown_notified_; // Was notify called on the shutdown_cv_
std::condition_variable shutdown_cv_;
std::shared_ptr<GlobalCallbacks> global_callbacks_;
std::vector<grpc::string> services_;
bool has_generic_service_;
// Pointer to the wrapped grpc_server.
grpc_server* server_;
std::unique_ptr<ServerInitializer> server_initializer_;
std::unique_ptr<HealthCheckServiceInterface> health_check_service_;
bool health_check_service_disabled_;
};
} // namespace grpc
#endif // GRPCXX_SERVER_H

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/*
*
* Copyright 2015-2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SERVER_BUILDER_H
#define GRPCXX_SERVER_BUILDER_H
#include <climits>
#include <map>
#include <memory>
#include <vector>
#include <grpc++/impl/channel_argument_option.h>
#include <grpc++/impl/server_builder_option.h>
#include <grpc++/impl/server_builder_plugin.h>
#include <grpc++/support/config.h>
#include <grpc/compression.h>
#include <grpc/support/cpu.h>
#include <grpc/support/useful.h>
#include <grpc/support/workaround_list.h>
struct grpc_resource_quota;
namespace grpc {
class AsyncGenericService;
class ResourceQuota;
class CompletionQueue;
class RpcService;
class Server;
class ServerCompletionQueue;
class ServerCredentials;
class Service;
namespace testing {
class ServerBuilderPluginTest;
} // namespace testing
/// A builder class for the creation and startup of \a grpc::Server instances.
class ServerBuilder {
public:
ServerBuilder();
~ServerBuilder();
/// Options for synchronous servers.
enum SyncServerOption {
NUM_CQS, ///< Number of completion queues.
MIN_POLLERS, ///< Minimum number of polling threads.
MAX_POLLERS, ///< Maximum number of polling threads.
CQ_TIMEOUT_MSEC ///< Completion queue timeout in milliseconds.
};
/// Register a service. This call does not take ownership of the service.
/// The service must exist for the lifetime of the \a Server instance returned
/// by \a BuildAndStart().
/// Matches requests with any :authority
ServerBuilder& RegisterService(Service* service);
/// Register a generic service.
/// Matches requests with any :authority
ServerBuilder& RegisterAsyncGenericService(AsyncGenericService* service);
/// Register a service. This call does not take ownership of the service.
/// The service must exist for the lifetime of the \a Server instance returned
/// by \a BuildAndStart().
/// Only matches requests with :authority \a host
ServerBuilder& RegisterService(const grpc::string& host, Service* service);
/// Set max receive message size in bytes.
ServerBuilder& SetMaxReceiveMessageSize(int max_receive_message_size) {
max_receive_message_size_ = max_receive_message_size;
return *this;
}
/// Set max send message size in bytes.
ServerBuilder& SetMaxSendMessageSize(int max_send_message_size) {
max_send_message_size_ = max_send_message_size;
return *this;
}
/// \deprecated For backward compatibility.
ServerBuilder& SetMaxMessageSize(int max_message_size) {
return SetMaxReceiveMessageSize(max_message_size);
}
/// Set the support status for compression algorithms. All algorithms are
/// enabled by default.
///
/// Incoming calls compressed with an unsupported algorithm will fail with
/// \a GRPC_STATUS_UNIMPLEMENTED.
ServerBuilder& SetCompressionAlgorithmSupportStatus(
grpc_compression_algorithm algorithm, bool enabled);
/// The default compression level to use for all channel calls in the
/// absence of a call-specific level.
ServerBuilder& SetDefaultCompressionLevel(grpc_compression_level level);
/// The default compression algorithm to use for all channel calls in the
/// absence of a call-specific level. Note that it overrides any compression
/// level set by \a SetDefaultCompressionLevel.
ServerBuilder& SetDefaultCompressionAlgorithm(
grpc_compression_algorithm algorithm);
/// Set the attached buffer pool for this server
ServerBuilder& SetResourceQuota(const ResourceQuota& resource_quota);
ServerBuilder& SetOption(std::unique_ptr<ServerBuilderOption> option);
/// Only useful if this is a Synchronous server.
ServerBuilder& SetSyncServerOption(SyncServerOption option, int value);
/// Add a channel argument (an escape hatch to tuning core library parameters
/// directly)
template <class T>
ServerBuilder& AddChannelArgument(const grpc::string& arg, const T& value) {
return SetOption(MakeChannelArgumentOption(arg, value));
}
/// Enlists an endpoint \a addr (port with an optional IP address) to
/// bind the \a grpc::Server object to be created to.
///
/// It can be invoked multiple times.
///
/// \param addr_uri The address to try to bind to the server in URI form. If
/// the scheme name is omitted, "dns:///" is assumed. Valid values include
/// dns:///localhost:1234, / 192.168.1.1:31416, dns:///[::1]:27182, etc.).
/// \params creds The credentials associated with the server.
/// \param selected_port[out] If not `nullptr`, gets populated with the port
/// number bound to the \a grpc::Server for the corresponding endpoint after
/// it is successfully bound, 0 otherwise.
///
// TODO(dgq): the "port" part seems to be a misnomer.
ServerBuilder& AddListeningPort(const grpc::string& addr_uri,
std::shared_ptr<ServerCredentials> creds,
int* selected_port = nullptr);
/// Add a completion queue for handling asynchronous services.
///
/// Caller is required to shutdown the server prior to shutting down the
/// returned completion queue. A typical usage scenario:
///
/// // While building the server:
/// ServerBuilder builder;
/// ...
/// cq_ = builder.AddCompletionQueue();
/// server_ = builder.BuildAndStart();
///
/// // While shutting down the server;
/// server_->Shutdown();
/// cq_->Shutdown(); // Always *after* the associated server's Shutdown()!
///
/// \param is_frequently_polled This is an optional parameter to inform gRPC
/// library about whether this completion queue would be frequently polled
/// (i.e. by calling \a Next() or \a AsyncNext()). The default value is
/// 'true' and is the recommended setting. Setting this to 'false' (i.e.
/// not polling the completion queue frequently) will have a significantly
/// negative performance impact and hence should not be used in production
/// use cases.
std::unique_ptr<ServerCompletionQueue> AddCompletionQueue(
bool is_frequently_polled = true);
/// Return a running server which is ready for processing calls.
std::unique_ptr<Server> BuildAndStart();
/// For internal use only: Register a ServerBuilderPlugin factory function.
static void InternalAddPluginFactory(
std::unique_ptr<ServerBuilderPlugin> (*CreatePlugin)());
/// Enable a server workaround. Do not use unless you know what the workaround
/// does. For explanation and detailed descriptions of workarounds, see
/// doc/workarounds.md.
ServerBuilder& EnableWorkaround(grpc_workaround_list id);
private:
friend class ::grpc::testing::ServerBuilderPluginTest;
struct Port {
grpc::string addr;
std::shared_ptr<ServerCredentials> creds;
int* selected_port;
};
struct SyncServerSettings {
SyncServerSettings()
: num_cqs(1), min_pollers(1), max_pollers(2), cq_timeout_msec(10000) {}
/// Number of server completion queues to create to listen to incoming RPCs.
int num_cqs;
/// Minimum number of threads per completion queue that should be listening
/// to incoming RPCs.
int min_pollers;
/// Maximum number of threads per completion queue that can be listening to
/// incoming RPCs.
int max_pollers;
/// The timeout for server completion queue's AsyncNext call.
int cq_timeout_msec;
};
typedef std::unique_ptr<grpc::string> HostString;
struct NamedService {
explicit NamedService(Service* s) : service(s) {}
NamedService(const grpc::string& h, Service* s)
: host(new grpc::string(h)), service(s) {}
HostString host;
Service* service;
};
int max_receive_message_size_;
int max_send_message_size_;
std::vector<std::unique_ptr<ServerBuilderOption>> options_;
std::vector<std::unique_ptr<NamedService>> services_;
std::vector<Port> ports_;
SyncServerSettings sync_server_settings_;
/// List of completion queues added via \a AddCompletionQueue method.
std::vector<ServerCompletionQueue*> cqs_;
std::shared_ptr<ServerCredentials> creds_;
std::vector<std::unique_ptr<ServerBuilderPlugin>> plugins_;
grpc_resource_quota* resource_quota_;
AsyncGenericService* generic_service_;
struct {
bool is_set;
grpc_compression_level level;
} maybe_default_compression_level_;
struct {
bool is_set;
grpc_compression_algorithm algorithm;
} maybe_default_compression_algorithm_;
uint32_t enabled_compression_algorithms_bitset_;
};
} // namespace grpc
#endif // GRPCXX_SERVER_BUILDER_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SERVER_CONTEXT_H
#define GRPCXX_SERVER_CONTEXT_H
#include <grpc++/impl/codegen/server_context.h>
#endif // GRPCXX_SERVER_CONTEXT_H

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SERVER_POSIX_H
#define GRPCXX_SERVER_POSIX_H
#include <memory>
#include <grpc++/server.h>
#include <grpc/support/port_platform.h>
namespace grpc {
#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
/// Add a new client to a \a Server communicating over the given
/// file descriptor.
///
/// \param server The server to add the client to.
/// \param fd The file descriptor representing a socket.
void AddInsecureChannelFromFd(Server* server, int fd);
#endif // GPR_SUPPORT_CHANNELS_FROM_FD
} // namespace grpc
#endif // GRPCXX_SERVER_POSIX_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_ASYNC_STREAM_H
#define GRPCXX_SUPPORT_ASYNC_STREAM_H
#include <grpc++/impl/codegen/async_stream.h>
#endif // GRPCXX_SUPPORT_ASYNC_STREAM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_ASYNC_UNARY_CALL_H
#define GRPCXX_SUPPORT_ASYNC_UNARY_CALL_H
#include <grpc++/impl/codegen/async_unary_call.h>
#endif // GRPCXX_SUPPORT_ASYNC_UNARY_CALL_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_BYTE_BUFFER_H
#define GRPCXX_SUPPORT_BYTE_BUFFER_H
#include <grpc++/impl/serialization_traits.h>
#include <grpc++/support/config.h>
#include <grpc++/support/slice.h>
#include <grpc++/support/status.h>
#include <grpc/byte_buffer.h>
#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include <vector>
namespace grpc {
/// A sequence of bytes.
class ByteBuffer final {
public:
/// Constuct an empty buffer.
ByteBuffer() : buffer_(nullptr) {}
/// Construct buffer from \a slices, of which there are \a nslices.
ByteBuffer(const Slice* slices, size_t nslices);
/// Constuct a byte buffer by referencing elements of existing buffer
/// \a buf. Wrapper of core function grpc_byte_buffer_copy
ByteBuffer(const ByteBuffer& buf);
~ByteBuffer();
ByteBuffer& operator=(const ByteBuffer&);
/// Dump (read) the buffer contents into \a slices.
Status Dump(std::vector<Slice>* slices) const;
/// Remove all data.
void Clear();
/// Buffer size in bytes.
size_t Length() const;
/// Swap the state of *this and *other.
void Swap(ByteBuffer* other);
private:
friend class SerializationTraits<ByteBuffer, void>;
// takes ownership
void set_buffer(grpc_byte_buffer* buf) {
if (buffer_) {
Clear();
}
buffer_ = buf;
}
// For \a SerializationTraits's usage.
grpc_byte_buffer* buffer() const { return buffer_; }
grpc_byte_buffer* buffer_;
};
template <>
class SerializationTraits<ByteBuffer, void> {
public:
static Status Deserialize(grpc_byte_buffer* byte_buffer, ByteBuffer* dest) {
dest->set_buffer(byte_buffer);
return Status::OK;
}
static Status Serialize(const ByteBuffer& source, grpc_byte_buffer** buffer,
bool* own_buffer) {
*buffer = grpc_byte_buffer_copy(source.buffer());
*own_buffer = true;
return Status::OK;
}
};
} // namespace grpc
#endif // GRPCXX_SUPPORT_BYTE_BUFFER_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_CHANNEL_ARGUMENTS_H
#define GRPCXX_SUPPORT_CHANNEL_ARGUMENTS_H
#include <list>
#include <vector>
#include <grpc++/support/config.h>
#include <grpc/compression.h>
#include <grpc/grpc.h>
namespace grpc {
namespace testing {
class ChannelArgumentsTest;
} // namespace testing
class ResourceQuota;
/// Options for channel creation. The user can use generic setters to pass
/// key value pairs down to C channel creation code. For gRPC related options,
/// concrete setters are provided.
class ChannelArguments {
public:
ChannelArguments();
~ChannelArguments();
ChannelArguments(const ChannelArguments& other);
ChannelArguments& operator=(ChannelArguments other) {
Swap(other);
return *this;
}
void Swap(ChannelArguments& other);
/// Dump arguments in this instance to \a channel_args. Does not take
/// ownership of \a channel_args.
///
/// Note that the underlying arguments are shared. Changes made to either \a
/// channel_args or this instance would be reflected on both.
void SetChannelArgs(grpc_channel_args* channel_args) const;
// gRPC specific channel argument setters
/// Set target name override for SSL host name checking. This option is for
/// testing only and should never be used in production.
void SetSslTargetNameOverride(const grpc::string& name);
// TODO(yangg) add flow control options
/// Set the compression algorithm for the channel.
void SetCompressionAlgorithm(grpc_compression_algorithm algorithm);
/// Set the socket mutator for the channel.
void SetSocketMutator(grpc_socket_mutator* mutator);
/// Set the string to prepend to the user agent.
void SetUserAgentPrefix(const grpc::string& user_agent_prefix);
/// Set the buffer pool to be attached to the constructed channel.
void SetResourceQuota(const ResourceQuota& resource_quota);
/// Set the max receive and send message sizes.
void SetMaxReceiveMessageSize(int size);
void SetMaxSendMessageSize(int size);
/// Set LB policy name.
/// Note that if the name resolver returns only balancer addresses, the
/// grpclb LB policy will be used, regardless of what is specified here.
void SetLoadBalancingPolicyName(const grpc::string& lb_policy_name);
/// Set service config in JSON form.
/// Primarily meant for use in unit tests.
void SetServiceConfigJSON(const grpc::string& service_config_json);
// Generic channel argument setters. Only for advanced use cases.
/// Set an integer argument \a value under \a key.
void SetInt(const grpc::string& key, int value);
// Generic channel argument setter. Only for advanced use cases.
/// Set a pointer argument \a value under \a key. Owership is not transferred.
void SetPointer(const grpc::string& key, void* value);
void SetPointerWithVtable(const grpc::string& key, void* value,
const grpc_arg_pointer_vtable* vtable);
/// Set a textual argument \a value under \a key.
void SetString(const grpc::string& key, const grpc::string& value);
/// Return (by value) a C \a grpc_channel_args structure which points to
/// arguments owned by this \a ChannelArguments instance
grpc_channel_args c_channel_args() const {
grpc_channel_args out;
out.num_args = args_.size();
out.args = args_.empty() ? NULL : const_cast<grpc_arg*>(&args_[0]);
return out;
}
private:
friend class SecureChannelCredentials;
friend class testing::ChannelArgumentsTest;
/// Default pointer argument operations.
struct PointerVtableMembers {
static void* Copy(void* in) { return in; }
static void Destroy(grpc_exec_ctx* exec_ctx, void* in) {}
static int Compare(void* a, void* b) {
if (a < b) return -1;
if (a > b) return 1;
return 0;
}
};
// Returns empty string when it is not set.
grpc::string GetSslTargetNameOverride() const;
std::vector<grpc_arg> args_;
std::list<grpc::string> strings_;
};
} // namespace grpc
#endif // GRPCXX_SUPPORT_CHANNEL_ARGUMENTS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_CONFIG_H
#define GRPCXX_SUPPORT_CONFIG_H
#include <grpc++/impl/codegen/config.h>
#endif // GRPCXX_SUPPORT_CONFIG_H

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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_ERROR_DETAILS_H
#define GRPCXX_SUPPORT_ERROR_DETAILS_H
#include <grpc++/support/status.h>
namespace google {
namespace rpc {
class Status;
} // namespace rpc
} // namespace google
namespace grpc {
/// Map a \a grpc::Status to a \a google::rpc::Status.
/// The given \a to object will be cleared.
/// On success, returns status with OK.
/// Returns status with \a INVALID_ARGUMENT, if failed to deserialize.
/// Returns status with \a FAILED_PRECONDITION, if \a to is nullptr.
Status ExtractErrorDetails(const Status& from, ::google::rpc::Status* to);
/// Map \a google::rpc::Status to a \a grpc::Status.
/// Returns OK on success.
/// Returns status with \a FAILED_PRECONDITION if \a to is nullptr.
Status SetErrorDetails(const ::google::rpc::Status& from, Status* to);
} // namespace grpc
#endif // GRPCXX_SUPPORT_ERROR_DETAILS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_SLICE_H
#define GRPCXX_SUPPORT_SLICE_H
#include <grpc++/support/config.h>
#include <grpc/slice.h>
namespace grpc {
/// A wrapper around \a grpc_slice.
///
/// A slice represents a contiguous reference counted array of bytes.
/// It is cheap to take references to a slice, and it is cheap to create a
/// slice pointing to a subset of another slice.
class Slice final {
public:
/// Construct an empty slice.
Slice();
/// Destructor - drops one reference.
~Slice();
enum AddRef { ADD_REF };
/// Construct a slice from \a slice, adding a reference.
Slice(grpc_slice slice, AddRef);
enum StealRef { STEAL_REF };
/// Construct a slice from \a slice, stealing a reference.
Slice(grpc_slice slice, StealRef);
/// Allocate a slice of specified size
Slice(size_t len);
/// Construct a slice from a copied buffer
Slice(const void* buf, size_t len);
/// Construct a slice from a copied string
Slice(const grpc::string& str);
enum StaticSlice { STATIC_SLICE };
/// Construct a slice from a static buffer
Slice(const void* buf, size_t len, StaticSlice);
/// Copy constructor, adds a reference.
Slice(const Slice& other);
/// Assignment, reference count is unchanged.
Slice& operator=(Slice other) {
std::swap(slice_, other.slice_);
return *this;
}
/// Create a slice pointing at some data. Calls malloc to allocate a refcount
/// for the object, and arranges that destroy will be called with the
/// user data pointer passed in at destruction. Can be the same as buf or
/// different (e.g., if data is part of a larger structure that must be
/// destroyed when the data is no longer needed)
Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data);
/// Specialization of above for common case where buf == user_data
Slice(void* buf, size_t len, void (*destroy)(void*))
: Slice(buf, len, destroy, buf) {}
/// Similar to the above but has a destroy that also takes slice length
Slice(void* buf, size_t len, void (*destroy)(void*, size_t));
/// Byte size.
size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
/// Raw pointer to the beginning (first element) of the slice.
const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
/// Raw pointer to the end (one byte \em past the last element) of the slice.
const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
/// Raw C slice. Caller needs to call grpc_slice_unref when done.
grpc_slice c_slice() const { return grpc_slice_ref(slice_); }
private:
friend class ByteBuffer;
grpc_slice slice_;
};
} // namespace grpc
#endif // GRPCXX_SUPPORT_SLICE_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_STATUS_H
#define GRPCXX_SUPPORT_STATUS_H
#include <grpc++/impl/codegen/status.h>
#endif // GRPCXX_SUPPORT_STATUS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_STATUS_CODE_ENUM_H
#define GRPCXX_SUPPORT_STATUS_CODE_ENUM_H
#include <grpc++/impl/codegen/status_code_enum.h>
#endif // GRPCXX_SUPPORT_STATUS_CODE_ENUM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_STRING_REF_H
#define GRPCXX_SUPPORT_STRING_REF_H
#include <grpc++/impl/codegen/string_ref.h>
#endif // GRPCXX_SUPPORT_STRING_REF_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_STUB_OPTIONS_H
#define GRPCXX_SUPPORT_STUB_OPTIONS_H
#include <grpc++/impl/codegen/stub_options.h>
#endif // GRPCXX_SUPPORT_STUB_OPTIONS_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_SYNC_STREAM_H
#define GRPCXX_SUPPORT_SYNC_STREAM_H
#include <grpc++/impl/codegen/sync_stream.h>
#endif // GRPCXX_SUPPORT_SYNC_STREAM_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCXX_SUPPORT_TIME_H
#define GRPCXX_SUPPORT_TIME_H
#include <grpc++/impl/codegen/time.h>
#endif // GRPCXX_SUPPORT_TIME_H

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_BYTE_BUFFER_H
#define GRPC_BYTE_BUFFER_H
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/slice_buffer.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Returns a RAW byte buffer instance over the given slices (up to \a nslices).
*
* Increases the reference count for all \a slices processed. The user is
* responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(grpc_slice *slices,
size_t nslices);
/** Returns a *compressed* RAW byte buffer instance over the given slices (up to
* \a nslices). The \a compression argument defines the compression algorithm
* used to generate the data in \a slices.
*
* Increases the reference count for all \a slices processed. The user is
* responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
GRPCAPI grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
/** Copies input byte buffer \a bb.
*
* Increases the reference count of all the source slices. The user is
* responsible for calling grpc_byte_buffer_destroy over the returned copy. */
GRPCAPI grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb);
/** Returns the size of the given byte buffer, in bytes. */
GRPCAPI size_t grpc_byte_buffer_length(grpc_byte_buffer *bb);
/** Destroys \a byte_buffer deallocating all its memory. */
GRPCAPI void grpc_byte_buffer_destroy(grpc_byte_buffer *byte_buffer);
/** Reader for byte buffers. Iterates over slices in the byte buffer */
struct grpc_byte_buffer_reader;
typedef struct grpc_byte_buffer_reader grpc_byte_buffer_reader;
/** Initialize \a reader to read over \a buffer.
* Returns 1 upon success, 0 otherwise. */
GRPCAPI int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
grpc_byte_buffer *buffer);
/** Cleanup and destroy \a reader */
GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader);
/** Updates \a slice with the next piece of data from from \a reader and returns
* 1. Returns 0 at the end of the stream. Caller is responsible for calling
* grpc_slice_unref on the result. */
GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
grpc_slice *slice);
/** Merge all data from \a reader into single slice */
GRPCAPI grpc_slice
grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader *reader);
/** Returns a RAW byte buffer instance from the output of \a reader. */
GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_from_reader(
grpc_byte_buffer_reader *reader);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_BYTE_BUFFER_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_BYTE_BUFFER_READER_H
#define GRPC_BYTE_BUFFER_READER_H
#include <grpc/impl/codegen/byte_buffer_reader.h>
#endif /* GRPC_BYTE_BUFFER_READER_H */

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/*
*
* Copyright 2015-2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/** RPC-internal Census API's. These are designed to be generic enough that
* they can (ultimately) be used in many different RPC systems (with differing
* implementations). */
#ifndef GRPC_CENSUS_H
#define GRPC_CENSUS_H
#include <grpc/grpc.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Identify census features that can be enabled via census_initialize(). */
enum census_features {
CENSUS_FEATURE_NONE = 0, /** Do not enable census. */
CENSUS_FEATURE_TRACING = 1, /** Enable census tracing. */
CENSUS_FEATURE_STATS = 2, /** Enable Census stats collection. */
CENSUS_FEATURE_CPU = 4, /** Enable Census CPU usage collection. */
CENSUS_FEATURE_ALL =
CENSUS_FEATURE_TRACING | CENSUS_FEATURE_STATS | CENSUS_FEATURE_CPU
};
/** Shutdown and startup census subsystem. The 'features' argument should be
* the OR (|) of census_features values. If census fails to initialize, then
* census_initialize() will return -1, otherwise the set of enabled features
* (which may be smaller than that provided in the `features` argument, see
* census_supported()) is returned. It is an error to call census_initialize()
* more than once (without an intervening census_shutdown()). These functions
* are not thread-safe. */
CENSUSAPI int census_initialize(int features);
CENSUSAPI void census_shutdown(void);
/** Return the features supported by the current census implementation (not all
* features will be available on all platforms). */
CENSUSAPI int census_supported(void);
/** Return the census features currently enabled. */
CENSUSAPI int census_enabled(void);
/**
A Census Context is a handle used by Census to represent the current tracing
and stats collection information. Contexts should be propagated across RPC's
(this is the responsibility of the local RPC system). A context is typically
used as the first argument to most census functions. Conceptually, they
should be thought of as specific to a single RPC/thread. The user visible
context representation is that of a collection of key:value string pairs,
each of which is termed a 'tag'; these form the basis against which Census
metrics will be recorded. Keys are unique within a context. */
typedef struct census_context census_context;
/** A tag is a key:value pair. Both keys and values are nil-terminated strings,
containing printable ASCII characters (decimal 32-126). Keys must be at
least one character in length. Both keys and values can have at most
CENSUS_MAX_TAG_KB_LEN characters (including the terminating nil). The
maximum number of tags that can be propagated is
CENSUS_MAX_PROPAGATED_TAGS. Users should also remember that some systems
may have limits on, e.g., the number of bytes that can be transmitted as
metadata, and that larger tags means more memory consumed and time in
processing. */
typedef struct {
const char *key;
const char *value;
uint8_t flags;
} census_tag;
/** Maximum length of a tag's key or value. */
#define CENSUS_MAX_TAG_KV_LEN 255
/** Maximum number of propagatable tags. */
#define CENSUS_MAX_PROPAGATED_TAGS 255
/** Tag flags. */
#define CENSUS_TAG_PROPAGATE 1 /** Tag should be propagated over RPC */
#define CENSUS_TAG_STATS 2 /** Tag will be used for statistics aggregation */
#define CENSUS_TAG_RESERVED 4 /** Reserved for internal use. */
/** Flag values 4,8,16,32,64,128 are reserved for future/internal use. Clients
should not use or rely on their values. */
#define CENSUS_TAG_IS_PROPAGATED(flags) (flags & CENSUS_TAG_PROPAGATE)
#define CENSUS_TAG_IS_STATS(flags) (flags & CENSUS_TAG_STATS)
/** An instance of this structure is kept by every context, and records the
basic information associated with the creation of that context. */
typedef struct {
int n_propagated_tags; /** number of propagated tags */
int n_local_tags; /** number of non-propagated (local) tags */
int n_deleted_tags; /** number of tags that were deleted */
int n_added_tags; /** number of tags that were added */
int n_modified_tags; /** number of tags that were modified */
int n_invalid_tags; /** number of tags with bad keys or values (e.g.
longer than CENSUS_MAX_TAG_KV_LEN) */
int n_ignored_tags; /** number of tags ignored because of
CENSUS_MAX_PROPAGATED_TAGS limit. */
} census_context_status;
/** Create a new context, adding and removing tags from an existing context.
This will copy all tags from the 'tags' input, so it is recommended
to add as many tags in a single operation as is practical for the client.
@param base Base context to build upon. Can be NULL.
@param tags A set of tags to be added/changed/deleted. Tags with keys that
are in 'tags', but not 'base', are added to the context. Keys that are in
both 'tags' and 'base' will have their value/flags modified. Tags with keys
in both, but with NULL values, will be deleted from the context. Tags with
invalid (too long or short) keys or values will be ignored.
If adding a tag will result in more than CENSUS_MAX_PROPAGATED_TAGS in either
binary or non-binary tags, they will be ignored, as will deletions of
tags that don't exist.
@param ntags number of tags in 'tags'
@param status If not NULL, will return a pointer to a census_context_status
structure containing information about the new context and status of the
tags used in its creation.
@return A new, valid census_context.
*/
CENSUSAPI census_context *census_context_create(
const census_context *base, const census_tag *tags, int ntags,
census_context_status const **status);
/** Destroy a context. Once this function has been called, the context cannot
be reused. */
CENSUSAPI void census_context_destroy(census_context *context);
/** Get a pointer to the original status from the context creation. */
CENSUSAPI const census_context_status *census_context_get_status(
const census_context *context);
/** Structure used for iterating over the tags in a context. API clients should
not use or reference internal fields - neither their contents or
presence/absence are guaranteed. */
typedef struct {
const census_context *context;
int base;
int index;
char *kvm;
} census_context_iterator;
/** Initialize a census_tag_iterator. Must be called before first use. */
CENSUSAPI void census_context_initialize_iterator(
const census_context *context, census_context_iterator *iterator);
/** Get the contents of the "next" tag in the context. If there are no more
tags, returns 0 (and 'tag' contents will be unchanged), otherwise returns 1.
*/
CENSUSAPI int census_context_next_tag(census_context_iterator *iterator,
census_tag *tag);
/** Get a context tag by key. Returns 0 if the key is not present. */
CENSUSAPI int census_context_get_tag(const census_context *context,
const char *key, census_tag *tag);
/** Tag set encode/decode functionality. These functions are intended
for use by RPC systems only, for purposes of transmitting/receiving contexts.
*/
/** Encode a context into a buffer.
@param context context to be encoded
@param buffer buffer into which the context will be encoded.
@param buf_size number of available bytes in buffer.
@return The number of buffer bytes consumed for the encoded context, or
zero if the buffer was of insufficient size. */
CENSUSAPI size_t census_context_encode(const census_context *context,
char *buffer, size_t buf_size);
/** Decode context buffer encoded with census_context_encode(). Returns NULL
if there is an error in parsing either buffer. */
CENSUSAPI census_context *census_context_decode(const char *buffer,
size_t size);
/** Distributed traces can have a number of options. */
enum census_trace_mask_values {
CENSUS_TRACE_MASK_NONE = 0, /** Default, empty flags */
CENSUS_TRACE_MASK_IS_SAMPLED = 1 /** RPC tracing enabled for this context. */
};
/** Get the current trace mask associated with this context. The value returned
will be the logical OR of census_trace_mask_values values. */
CENSUSAPI int census_trace_mask(const census_context *context);
/** Set the trace mask associated with a context. */
CENSUSAPI void census_set_trace_mask(int trace_mask);
/** The concept of "operation" is a fundamental concept for Census. In an RPC
system, an operation typically represents a single RPC, or a significant
sub-part thereof (e.g. a single logical "read" RPC to a distributed storage
system might do several other actions in parallel, from looking up metadata
indices to making requests of other services - each of these could be a
sub-operation with the larger RPC operation). Census uses operations for the
following:
CPU accounting: If enabled, census will measure the thread CPU time
consumed between operation start and end times.
Active operations: Census will maintain information on all currently
active operations.
Distributed tracing: Each operation serves as a logical trace span.
Stats collection: Stats are broken down by operation (e.g. latency
breakdown for each unique RPC path).
The following functions serve to delineate the start and stop points for
each logical operation. */
/**
This structure represents a timestamp as used by census to record the time
at which an operation begins.
*/
typedef struct {
/** Use gpr_timespec for default implementation. High performance
* implementations should use a cycle-counter based timestamp. */
gpr_timespec ts;
} census_timestamp;
/**
Mark the beginning of an RPC operation. The information required to call the
functions to record the start of RPC operations (both client and server) may
not be callable at the true start time of the operation, due to information
not being available (e.g. the census context data will not be available in a
server RPC until at least initial metadata has been processed). To ensure
correct CPU accounting and latency recording, RPC systems can call this
function to get the timestamp of operation beginning. This can later be used
as an argument to census_start_{client,server}_rpc_op(). NB: for correct
CPU accounting, the system must guarantee that the same thread is used
for all request processing after this function is called.
@return A timestamp representing the operation start time.
*/
CENSUSAPI census_timestamp census_start_rpc_op_timestamp(void);
/**
Represent functions to map RPC name ID to service/method names. Census
breaks down all RPC stats by service and method names. We leave the
definition and format of these to the RPC system. For efficiency purposes,
we encode these as a single 64 bit identifier, and allow the RPC system to
provide a structure for functions that can convert these to service and
method strings.
TODO(aveitch): Instead of providing this as an argument to the rpc_start_op()
functions, maybe it should be set once at census initialization.
*/
typedef struct {
const char *(*get_rpc_service_name)(int64_t id);
const char *(*get_rpc_method_name)(int64_t id);
} census_rpc_name_info;
/**
Start a client rpc operation. This function should be called as early in the
client RPC path as possible. This function will create a new context. If
the context argument is non-null, then the new context will inherit all
its properties, with the following changes:
- create a new operation ID for the new context, marking it as a child of
the previous operation.
- use the new RPC path and peer information for tracing and stats
collection purposes, rather than those from the original context
If the context argument is NULL, then a new root context is created. This
is particularly important for tracing purposes (the trace spans generated
will be unassociated with any other trace spans, except those
downstream). The trace_mask will be used for tracing operations associated
with the new context.
In some RPC systems (e.g. where load balancing is used), peer information
may not be available at the time the operation starts. In this case, use a
NULL value for peer, and set it later using the
census_set_rpc_client_peer() function.
@param context The parent context. Can be NULL.
@param rpc_name_id The rpc name identifier to be associated with this RPC.
@param rpc_name_info Used to decode rpc_name_id.
@param peer RPC peer. If not available at the time, NULL can be used,
and a later census_set_rpc_client_peer() call made.
@param trace_mask An OR of census_trace_mask_values values. Only used in
the creation of a new root context (context == NULL).
@param start_time A timestamp returned from census_start_rpc_op_timestamp().
Can be NULL. Used to set the true time the operation
begins.
@return A new census context.
*/
CENSUSAPI census_context *census_start_client_rpc_op(
const census_context *context, int64_t rpc_name_id,
const census_rpc_name_info *rpc_name_info, const char *peer, int trace_mask,
const census_timestamp *start_time);
/**
Add peer information to a context representing a client RPC operation.
*/
CENSUSAPI void census_set_rpc_client_peer(census_context *context,
const char *peer);
/**
Start a server RPC operation. Returns a new context to be used in future
census calls. If buffer is non-NULL, then the buffer contents should
represent the client context, as generated by census_context_serialize().
If buffer is NULL, a new root context is created.
@param buffer Buffer containing bytes output from census_context_serialize().
@param rpc_name_id The rpc name identifier to be associated with this RPC.
@param rpc_name_info Used to decode rpc_name_id.
@param peer RPC peer.
@param trace_mask An OR of census_trace_mask_values values. Only used in
the creation of a new root context (buffer == NULL).
@param start_time A timestamp returned from census_start_rpc_op_timestamp().
Can be NULL. Used to set the true time the operation
begins.
@return A new census context.
*/
CENSUSAPI census_context *census_start_server_rpc_op(
const char *buffer, int64_t rpc_name_id,
const census_rpc_name_info *rpc_name_info, const char *peer, int trace_mask,
census_timestamp *start_time);
/**
Start a new, non-RPC operation. In general, this function works very
similarly to census_start_client_rpc_op, with the primary difference being
the replacement of host/path information with the more generic family/name
tags. If the context argument is non-null, then the new context will
inherit all its properties, with the following changes:
- create a new operation ID for the new context, marking it as a child of
the previous operation.
- use the family and name information for tracing and stats collection
purposes, rather than those from the original context
If the context argument is NULL, then a new root context is created. This
is particularly important for tracing purposes (the trace spans generated
will be unassociated with any other trace spans, except those
downstream). The trace_mask will be used for tracing
operations associated with the new context.
@param context The base context. Can be NULL.
@param family Family name to associate with the trace
@param name Name within family to associate with traces/stats
@param trace_mask An OR of census_trace_mask_values values. Only used if
context is NULL.
@return A new census context.
*/
CENSUSAPI census_context *census_start_op(census_context *context,
const char *family, const char *name,
int trace_mask);
/**
End an operation started by any of the census_start_*_op*() calls. The
context used in this call will no longer be valid once this function
completes.
@param context Context associated with operation which is ending.
@param status status associated with the operation. Not interpreted by
census.
*/
CENSUSAPI void census_end_op(census_context *context, int status);
#define CENSUS_TRACE_RECORD_START_OP ((uint32_t)0)
#define CENSUS_TRACE_RECORD_END_OP ((uint32_t)1)
/** Insert a trace record into the trace stream. The record consists of an
arbitrary size buffer, the size of which is provided in 'n'.
@param context Trace context
@param type User-defined type to associate with trace entry.
@param buffer Pointer to buffer to use
@param n Number of bytes in buffer
*/
CENSUSAPI void census_trace_print(census_context *context, uint32_t type,
const char *buffer, size_t n);
/** Trace record. */
typedef struct {
census_timestamp timestamp; /** Time of record creation */
uint64_t trace_id; /** Trace ID associated with record */
uint64_t op_id; /** Operation ID associated with record */
uint32_t type; /** Type (as used in census_trace_print() */
const char *buffer; /** Buffer (from census_trace_print() */
size_t buf_size; /** Number of bytes inside buffer */
} census_trace_record;
/** Start a scan of existing trace records. While a scan is ongoing, addition
of new trace records will be blocked if the underlying trace buffers
fill up, so trace processing systems should endeavor to complete
reading as soon as possible.
@param consume if non-zero, indicates that reading records also "consumes"
the previously read record - i.e. releases space in the trace log
while scanning is ongoing.
@returns 0 on success, non-zero on failure (e.g. if a scan is already ongoing)
*/
CENSUSAPI int census_trace_scan_start(int consume);
/** Get a trace record. The data pointed to by the trace buffer is guaranteed
stable until the next census_get_trace_record() call (if the consume
argument to census_trace_scan_start was non-zero) or census_trace_scan_end()
is called (otherwise).
@param trace_record structure that will be filled in with oldest trace record.
@returns -1 if an error occurred (e.g. no previous call to
census_trace_scan_start()), 0 if there is no more trace data (and
trace_record will not be modified) or 1 otherwise.
*/
CENSUSAPI int census_get_trace_record(census_trace_record *trace_record);
/** End a scan previously started by census_trace_scan_start() */
CENSUSAPI void census_trace_scan_end();
/** Core stats collection API's. The following concepts are used:
* Resource: Users record measurements for a single resource. Examples
include RPC latency, CPU seconds consumed, and bytes transmitted.
* Aggregation: An aggregation of a set of measurements. Census supports the
following aggregation types:
* Distribution - statistical distribution information, used for
recording average, standard deviation etc. Can include a histogram.
* Interval - a count of events that happen in a rolling time window.
* View: A view is a combination of a Resource, a set of tag keys and an
Aggregation. When a measurement for a Resource matches the View tags, it is
recorded (for each unique set of tag values) using the Aggregation type.
Each resource can have an arbitrary number of views by which it will be
broken down.
Census uses protos to define each of the above, and output results. This
ensures unification across the different language and runtime
implementations. The proto definitions can be found in src/proto/census.
*/
/** Define a new resource. `resource_pb` should contain an encoded Resource
protobuf, `resource_pb_size` being the size of the buffer. Returns a -ve
value on error, or a positive (>= 0) resource id (for use in
census_delete_resource() and census_record_values()). In order to be valid, a
resource must have a name, and at least one numerator in its unit type. The
resource name must be unique, and an error will be returned if it is not. */
CENSUSAPI int32_t census_define_resource(const uint8_t *resource_pb,
size_t resource_pb_size);
/** Delete a resource created by census_define_resource(). */
CENSUSAPI void census_delete_resource(int32_t resource_id);
/** Determine the id of a resource, given its name. returns -1 if the resource
does not exist. */
CENSUSAPI int32_t census_resource_id(const char *name);
/** A single value to be recorded comprises two parts: an ID for the particular
* resource and the value to be recorded against it. */
typedef struct {
int32_t resource_id;
double value;
} census_value;
/** Record new usage values against the given context. */
CENSUSAPI void census_record_values(census_context *context,
census_value *values, size_t nvalues);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CENSUS_H */

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@@ -1,70 +0,0 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_COMPRESSION_H
#define GRPC_COMPRESSION_H
#include <grpc/impl/codegen/port_platform.h>
#include <stdlib.h>
#include <grpc/impl/codegen/compression_types.h>
#include <grpc/slice.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Parses the first \a name_length bytes of \a name as a
* grpc_compression_algorithm instance, updating \a algorithm. Returns 1 upon
* success, 0 otherwise. */
GRPCAPI int grpc_compression_algorithm_parse(
grpc_slice value, grpc_compression_algorithm *algorithm);
/** Updates \a name with the encoding name corresponding to a valid \a
* algorithm. Note that \a name is statically allocated and must *not* be freed.
* Returns 1 upon success, 0 otherwise. */
GRPCAPI int grpc_compression_algorithm_name(
grpc_compression_algorithm algorithm, char **name);
/** Returns the compression algorithm corresponding to \a level for the
* compression algorithms encoded in the \a accepted_encodings bitset.
*
* It abort()s for unknown levels . */
GRPCAPI grpc_compression_algorithm grpc_compression_algorithm_for_level(
grpc_compression_level level, uint32_t accepted_encodings);
GRPCAPI void grpc_compression_options_init(grpc_compression_options *opts);
/** Mark \a algorithm as enabled in \a opts. */
GRPCAPI void grpc_compression_options_enable_algorithm(
grpc_compression_options *opts, grpc_compression_algorithm algorithm);
/** Mark \a algorithm as disabled in \a opts. */
GRPCAPI void grpc_compression_options_disable_algorithm(
grpc_compression_options *opts, grpc_compression_algorithm algorithm);
/** Returns true if \a algorithm is marked as enabled in \a opts. */
GRPCAPI int grpc_compression_options_is_algorithm_enabled(
const grpc_compression_options *opts, grpc_compression_algorithm algorithm);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_COMPRESSION_H */

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/*
*
* Copyright 2015-2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_GRPC_H
#define GRPC_GRPC_H
#include <grpc/status.h>
#include <grpc/byte_buffer.h>
#include <grpc/impl/codegen/connectivity_state.h>
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/impl/codegen/propagation_bits.h>
#include <grpc/slice.h>
#include <grpc/support/time.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/*! \mainpage GRPC Core
*
* The GRPC Core library is a low-level library designed to be wrapped by higher
* level libraries. The top-level API is provided in grpc.h. Security related
* functionality lives in grpc_security.h.
*/
GRPCAPI void grpc_metadata_array_init(grpc_metadata_array *array);
GRPCAPI void grpc_metadata_array_destroy(grpc_metadata_array *array);
GRPCAPI void grpc_call_details_init(grpc_call_details *details);
GRPCAPI void grpc_call_details_destroy(grpc_call_details *details);
/** Registers a plugin to be initialized and destroyed with the library.
The \a init and \a destroy functions will be invoked as part of
\a grpc_init() and \a grpc_shutdown(), respectively.
Note that these functions can be invoked an arbitrary number of times
(and hence so will \a init and \a destroy).
It is safe to pass NULL to either argument. Plugins are destroyed in
the reverse order they were initialized. */
GRPCAPI void grpc_register_plugin(void (*init)(void), void (*destroy)(void));
/** Initialize the grpc library.
It is not safe to call any other grpc functions before calling this.
(To avoid overhead, little checking is done, and some things may work. We
do not warrant that they will continue to do so in future revisions of this
library). */
GRPCAPI void grpc_init(void);
/** Shut down the grpc library.
No memory is used by grpc after this call returns, nor are any instructions
executing within the grpc library.
Prior to calling, all application owned grpc objects must have been
destroyed. */
GRPCAPI void grpc_shutdown(void);
/** Return a string representing the current version of grpc */
GRPCAPI const char *grpc_version_string(void);
/** Return a string specifying what the 'g' in gRPC stands for */
GRPCAPI const char *grpc_g_stands_for(void);
/** Returns the completion queue factory based on the attributes. MAY return a
NULL if no factory can be found */
GRPCAPI const grpc_completion_queue_factory *
grpc_completion_queue_factory_lookup(
const grpc_completion_queue_attributes *attributes);
/** Helper function to create a completion queue with grpc_cq_completion_type
of GRPC_CQ_NEXT and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
GRPCAPI grpc_completion_queue *grpc_completion_queue_create_for_next(
void *reserved);
/** Helper function to create a completion queue with grpc_cq_completion_type
of GRPC_CQ_PLUCK and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
GRPCAPI grpc_completion_queue *grpc_completion_queue_create_for_pluck(
void *reserved);
/** Create a completion queue */
GRPCAPI grpc_completion_queue *grpc_completion_queue_create(
const grpc_completion_queue_factory *factory,
const grpc_completion_queue_attributes *attributes, void *reserved);
/** Blocks until an event is available, the completion queue is being shut down,
or deadline is reached.
Returns a grpc_event with type GRPC_QUEUE_TIMEOUT on timeout,
otherwise a grpc_event describing the event that occurred.
Callers must not call grpc_completion_queue_next and
grpc_completion_queue_pluck simultaneously on the same completion queue. */
GRPCAPI grpc_event grpc_completion_queue_next(grpc_completion_queue *cq,
gpr_timespec deadline,
void *reserved);
/** Blocks until an event with tag 'tag' is available, the completion queue is
being shutdown or deadline is reached.
Returns a grpc_event with type GRPC_QUEUE_TIMEOUT on timeout,
otherwise a grpc_event describing the event that occurred.
Callers must not call grpc_completion_queue_next and
grpc_completion_queue_pluck simultaneously on the same completion queue.
Completion queues support a maximum of GRPC_MAX_COMPLETION_QUEUE_PLUCKERS
concurrently executing plucks at any time. */
GRPCAPI grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cq,
void *tag, gpr_timespec deadline,
void *reserved);
/** Maximum number of outstanding grpc_completion_queue_pluck executions per
completion queue */
#define GRPC_MAX_COMPLETION_QUEUE_PLUCKERS 6
/** Begin destruction of a completion queue. Once all possible events are
drained then grpc_completion_queue_next will start to produce
GRPC_QUEUE_SHUTDOWN events only. At that point it's safe to call
grpc_completion_queue_destroy.
After calling this function applications should ensure that no
NEW work is added to be published on this completion queue. */
GRPCAPI void grpc_completion_queue_shutdown(grpc_completion_queue *cq);
/** Destroy a completion queue. The caller must ensure that the queue is
drained and no threads are executing grpc_completion_queue_next */
GRPCAPI void grpc_completion_queue_destroy(grpc_completion_queue *cq);
/** Create a completion queue alarm instance associated to \a cq.
*
* Once the alarm expires (at \a deadline) or it's cancelled (see \a
* grpc_alarm_cancel), an event with tag \a tag will be added to \a cq. If the
* alarm expired, the event's success bit will be true, false otherwise (ie,
* upon cancellation). */
GRPCAPI grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq,
gpr_timespec deadline, void *tag);
/** Cancel a completion queue alarm. Calling this function over an alarm that
* has already fired has no effect. */
GRPCAPI void grpc_alarm_cancel(grpc_alarm *alarm);
/** Destroy the given completion queue alarm, cancelling it in the process. */
GRPCAPI void grpc_alarm_destroy(grpc_alarm *alarm);
/** Check the connectivity state of a channel. */
GRPCAPI grpc_connectivity_state grpc_channel_check_connectivity_state(
grpc_channel *channel, int try_to_connect);
/** Number of active "external connectivity state watchers" attached to a
* channel.
* Useful for testing. **/
GRPCAPI int grpc_channel_num_external_connectivity_watchers(
grpc_channel *channel);
/** Watch for a change in connectivity state.
Once the channel connectivity state is different from last_observed_state,
tag will be enqueued on cq with success=1.
If deadline expires BEFORE the state is changed, tag will be enqueued on cq
with success=0. */
GRPCAPI void grpc_channel_watch_connectivity_state(
grpc_channel *channel, grpc_connectivity_state last_observed_state,
gpr_timespec deadline, grpc_completion_queue *cq, void *tag);
/** Create a call given a grpc_channel, in order to call 'method'. All
completions are sent to 'completion_queue'. 'method' and 'host' need only
live through the invocation of this function.
If parent_call is non-NULL, it must be a server-side call. It will be used
to propagate properties from the server call to this new client call,
depending on the value of \a propagation_mask (see propagation_bits.h for
possible values). */
GRPCAPI grpc_call *grpc_channel_create_call(
grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
grpc_completion_queue *completion_queue, grpc_slice method,
const grpc_slice *host, gpr_timespec deadline, void *reserved);
/** Ping the channels peer (load balanced channels will select one sub-channel
to ping); if the channel is not connected, posts a failed. */
GRPCAPI void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq,
void *tag, void *reserved);
/** Pre-register a method/host pair on a channel. */
GRPCAPI void *grpc_channel_register_call(grpc_channel *channel,
const char *method, const char *host,
void *reserved);
/** Create a call given a handle returned from grpc_channel_register_call.
\sa grpc_channel_create_call. */
GRPCAPI grpc_call *grpc_channel_create_registered_call(
grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
grpc_completion_queue *completion_queue, void *registered_call_handle,
gpr_timespec deadline, void *reserved);
/** Allocate memory in the grpc_call arena: this memory is automatically
discarded at call completion */
GRPCAPI void *grpc_call_arena_alloc(grpc_call *call, size_t size);
/** Start a batch of operations defined in the array ops; when complete, post a
completion of type 'tag' to the completion queue bound to the call.
The order of ops specified in the batch has no significance.
Only one operation of each type can be active at once in any given
batch.
If a call to grpc_call_start_batch returns GRPC_CALL_OK you must call
grpc_completion_queue_next or grpc_completion_queue_pluck on the completion
queue associated with 'call' for work to be performed. If a call to
grpc_call_start_batch returns any value other than GRPC_CALL_OK it is
guaranteed that no state associated with 'call' is changed and it is not
appropriate to call grpc_completion_queue_next or
grpc_completion_queue_pluck consequent to the failed grpc_call_start_batch
call.
THREAD SAFETY: access to grpc_call_start_batch in multi-threaded environment
needs to be synchronized. As an optimization, you may synchronize batches
containing just send operations independently from batches containing just
receive operations. */
GRPCAPI grpc_call_error grpc_call_start_batch(grpc_call *call,
const grpc_op *ops, size_t nops,
void *tag, void *reserved);
/** Returns a newly allocated string representing the endpoint to which this
call is communicating with. The string is in the uri format accepted by
grpc_channel_create.
The returned string should be disposed of with gpr_free().
WARNING: this value is never authenticated or subject to any security
related code. It must not be used for any authentication related
functionality. Instead, use grpc_auth_context. */
GRPCAPI char *grpc_call_get_peer(grpc_call *call);
struct census_context;
/** Set census context for a call; Must be called before first call to
grpc_call_start_batch(). */
GRPCAPI void grpc_census_call_set_context(grpc_call *call,
struct census_context *context);
/** Retrieve the calls current census context. */
GRPCAPI struct census_context *grpc_census_call_get_context(grpc_call *call);
/** Return a newly allocated string representing the target a channel was
created for. */
GRPCAPI char *grpc_channel_get_target(grpc_channel *channel);
/** Request info about the channel.
\a channel_info indicates what information is being requested and
how that information will be returned.
\a channel_info is owned by the caller. */
GRPCAPI void grpc_channel_get_info(grpc_channel *channel,
const grpc_channel_info *channel_info);
/** Create a client channel to 'target'. Additional channel level configuration
MAY be provided by grpc_channel_args, though the expectation is that most
clients will want to simply pass NULL. See grpc_channel_args definition for
more on this. The data in 'args' need only live through the invocation of
this function. */
GRPCAPI grpc_channel *grpc_insecure_channel_create(
const char *target, const grpc_channel_args *args, void *reserved);
/** Create a lame client: this client fails every operation attempted on it. */
GRPCAPI grpc_channel *grpc_lame_client_channel_create(
const char *target, grpc_status_code error_code, const char *error_message);
/** Close and destroy a grpc channel */
GRPCAPI void grpc_channel_destroy(grpc_channel *channel);
/** Error handling for grpc_call
Most grpc_call functions return a grpc_error. If the error is not GRPC_OK
then the operation failed due to some unsatisfied precondition.
If a grpc_call fails, it's guaranteed that no change to the call state
has been made. */
/** Called by clients to cancel an RPC on the server.
Can be called multiple times, from any thread.
THREAD-SAFETY grpc_call_cancel and grpc_call_cancel_with_status
are thread-safe, and can be called at any point before grpc_call_unref
is called.*/
GRPCAPI grpc_call_error grpc_call_cancel(grpc_call *call, void *reserved);
/** Called by clients to cancel an RPC on the server.
Can be called multiple times, from any thread.
If a status has not been received for the call, set it to the status code
and description passed in.
Importantly, this function does not send status nor description to the
remote endpoint.
Note that \a description doesn't need be a static string.
It doesn't need to be alive after the call to
grpc_call_cancel_with_status completes.
*/
GRPCAPI grpc_call_error grpc_call_cancel_with_status(grpc_call *call,
grpc_status_code status,
const char *description,
void *reserved);
/** Ref a call.
THREAD SAFETY: grpc_call_unref is thread-compatible */
GRPCAPI void grpc_call_ref(grpc_call *call);
/** Unref a call.
THREAD SAFETY: grpc_call_unref is thread-compatible */
GRPCAPI void grpc_call_unref(grpc_call *call);
/** Request notification of a new call.
Once a call is received, a notification tagged with \a tag_new is added to
\a cq_for_notification. \a call, \a details and \a request_metadata are
updated with the appropriate call information. \a cq_bound_to_call is bound
to \a call, and batch operation notifications for that call will be posted
to \a cq_bound_to_call.
Note that \a cq_for_notification must have been registered to the server via
\a grpc_server_register_completion_queue. */
GRPCAPI grpc_call_error grpc_server_request_call(
grpc_server *server, grpc_call **call, grpc_call_details *details,
grpc_metadata_array *request_metadata,
grpc_completion_queue *cq_bound_to_call,
grpc_completion_queue *cq_for_notification, void *tag_new);
/** How to handle payloads for a registered method */
typedef enum {
/** Don't try to read the payload */
GRPC_SRM_PAYLOAD_NONE,
/** Read the initial payload as a byte buffer */
GRPC_SRM_PAYLOAD_READ_INITIAL_BYTE_BUFFER
} grpc_server_register_method_payload_handling;
/** Registers a method in the server.
Methods to this (host, method) pair will not be reported by
grpc_server_request_call, but instead be reported by
grpc_server_request_registered_call when passed the appropriate
registered_method (as returned by this function).
Must be called before grpc_server_start.
Returns NULL on failure. */
GRPCAPI void *grpc_server_register_method(
grpc_server *server, const char *method, const char *host,
grpc_server_register_method_payload_handling payload_handling,
uint32_t flags);
/** Request notification of a new pre-registered call. 'cq_for_notification'
must have been registered to the server via
grpc_server_register_completion_queue. */
GRPCAPI grpc_call_error grpc_server_request_registered_call(
grpc_server *server, void *registered_method, grpc_call **call,
gpr_timespec *deadline, grpc_metadata_array *request_metadata,
grpc_byte_buffer **optional_payload,
grpc_completion_queue *cq_bound_to_call,
grpc_completion_queue *cq_for_notification, void *tag_new);
/** Create a server. Additional configuration for each incoming channel can
be specified with args. If no additional configuration is needed, args can
be NULL. See grpc_channel_args for more. The data in 'args' need only live
through the invocation of this function. */
GRPCAPI grpc_server *grpc_server_create(const grpc_channel_args *args,
void *reserved);
/** Register a completion queue with the server. Must be done for any
notification completion queue that is passed to grpc_server_request_*_call
and to grpc_server_shutdown_and_notify. Must be performed prior to
grpc_server_start. */
GRPCAPI void grpc_server_register_completion_queue(grpc_server *server,
grpc_completion_queue *cq,
void *reserved);
/** Add a HTTP2 over plaintext over tcp listener.
Returns bound port number on success, 0 on failure.
REQUIRES: server not started */
GRPCAPI int grpc_server_add_insecure_http2_port(grpc_server *server,
const char *addr);
/** Start a server - tells all listeners to start listening */
GRPCAPI void grpc_server_start(grpc_server *server);
/** Begin shutting down a server.
After completion, no new calls or connections will be admitted.
Existing calls will be allowed to complete.
Send a GRPC_OP_COMPLETE event when there are no more calls being serviced.
Shutdown is idempotent, and all tags will be notified at once if multiple
grpc_server_shutdown_and_notify calls are made. 'cq' must have been
registered to this server via grpc_server_register_completion_queue. */
GRPCAPI void grpc_server_shutdown_and_notify(grpc_server *server,
grpc_completion_queue *cq,
void *tag);
/** Cancel all in-progress calls.
Only usable after shutdown. */
GRPCAPI void grpc_server_cancel_all_calls(grpc_server *server);
/** Destroy a server.
Shutdown must have completed beforehand (i.e. all tags generated by
grpc_server_shutdown_and_notify must have been received, and at least
one call to grpc_server_shutdown_and_notify must have been made). */
GRPCAPI void grpc_server_destroy(grpc_server *server);
/** Enable or disable a tracer.
Tracers (usually controlled by the environment variable GRPC_TRACE)
allow printf-style debugging on GRPC internals, and are useful for
tracking down problems in the field.
Use of this function is not strictly thread-safe, but the
thread-safety issues raised by it should not be of concern. */
GRPCAPI int grpc_tracer_set_enabled(const char *name, int enabled);
/** Check whether a metadata key is legal (will be accepted by core) */
GRPCAPI int grpc_header_key_is_legal(grpc_slice slice);
/** Check whether a non-binary metadata value is legal (will be accepted by
core) */
GRPCAPI int grpc_header_nonbin_value_is_legal(grpc_slice slice);
/** Check whether a metadata key corresponds to a binary value */
GRPCAPI int grpc_is_binary_header(grpc_slice slice);
/** Convert grpc_call_error values to a string */
GRPCAPI const char *grpc_call_error_to_string(grpc_call_error error);
/** Create a buffer pool */
GRPCAPI grpc_resource_quota *grpc_resource_quota_create(const char *trace_name);
/** Add a reference to a buffer pool */
GRPCAPI void grpc_resource_quota_ref(grpc_resource_quota *resource_quota);
/** Drop a reference to a buffer pool */
GRPCAPI void grpc_resource_quota_unref(grpc_resource_quota *resource_quota);
/** Update the size of a buffer pool */
GRPCAPI void grpc_resource_quota_resize(grpc_resource_quota *resource_quota,
size_t new_size);
/** Fetch a vtable for a grpc_channel_arg that points to a grpc_resource_quota
*/
GRPCAPI const grpc_arg_pointer_vtable *grpc_resource_quota_arg_vtable(void);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_GRPC_H */

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_GRPC_CRONET_H
#define GRPC_GRPC_CRONET_H
#include <grpc/grpc.h>
#ifdef __cplusplus
extern "C" {
#endif
GRPCAPI grpc_channel *grpc_cronet_secure_channel_create(
void *engine, const char *target, const grpc_channel_args *args,
void *reserved);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_GRPC_CRONET_H */

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_GRPC_POSIX_H
#define GRPC_GRPC_POSIX_H
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/support/port_platform.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/*! \mainpage GRPC Core POSIX
*
* The GRPC Core POSIX library provides some POSIX-specific low-level
* functionality on top of GRPC Core.
*/
/** Create a client channel to 'target' using file descriptor 'fd'. The 'target'
argument will be used to indicate the name for this channel. See the comment
for grpc_insecure_channel_create for description of 'args' argument. */
GRPCAPI grpc_channel *grpc_insecure_channel_create_from_fd(
const char *target, int fd, const grpc_channel_args *args);
/** Add the connected communication channel based on file descriptor 'fd' to the
'server'. The 'fd' must be an open file descriptor corresponding to a
connected socket. Events from the file descriptor may come on any of the
server completion queues (i.e completion queues registered via the
grpc_server_register_completion_queue API).
The 'reserved' pointer MUST be NULL.
*/
GRPCAPI void grpc_server_add_insecure_channel_from_fd(grpc_server *server,
void *reserved, int fd);
/** GRPC Core POSIX library may internally use signals to optimize some work.
The library uses (SIGRTMIN + 6) signal by default. Use this API to instruct
the library to use a different signal i.e 'signum' instead.
Note:
- To prevent GRPC library from using any signals, pass a 'signum' of -1
- This API is optional but if called, it MUST be called before grpc_init() */
GRPCAPI void grpc_use_signal(int signum);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_GRPC_POSIX_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_GRPC_SECURITY_H
#define GRPC_GRPC_SECURITY_H
#include <grpc/grpc.h>
#include <grpc/grpc_security_constants.h>
#include <grpc/status.h>
#ifdef __cplusplus
extern "C" {
#endif
/** --- Authentication Context. --- */
typedef struct grpc_auth_context grpc_auth_context;
typedef struct grpc_auth_property_iterator {
const grpc_auth_context *ctx;
size_t index;
const char *name;
} grpc_auth_property_iterator;
/** value, if not NULL, is guaranteed to be NULL terminated. */
typedef struct grpc_auth_property {
char *name;
char *value;
size_t value_length;
} grpc_auth_property;
/** Returns NULL when the iterator is at the end. */
GRPCAPI const grpc_auth_property *grpc_auth_property_iterator_next(
grpc_auth_property_iterator *it);
/** Iterates over the auth context. */
GRPCAPI grpc_auth_property_iterator
grpc_auth_context_property_iterator(const grpc_auth_context *ctx);
/** Gets the peer identity. Returns an empty iterator (first _next will return
NULL) if the peer is not authenticated. */
GRPCAPI grpc_auth_property_iterator
grpc_auth_context_peer_identity(const grpc_auth_context *ctx);
/** Finds a property in the context. May return an empty iterator (first _next
will return NULL) if no property with this name was found in the context. */
GRPCAPI grpc_auth_property_iterator grpc_auth_context_find_properties_by_name(
const grpc_auth_context *ctx, const char *name);
/** Gets the name of the property that indicates the peer identity. Will return
NULL if the peer is not authenticated. */
GRPCAPI const char *grpc_auth_context_peer_identity_property_name(
const grpc_auth_context *ctx);
/** Returns 1 if the peer is authenticated, 0 otherwise. */
GRPCAPI int grpc_auth_context_peer_is_authenticated(
const grpc_auth_context *ctx);
/** Gets the auth context from the call. Caller needs to call
grpc_auth_context_release on the returned context. */
GRPCAPI grpc_auth_context *grpc_call_auth_context(grpc_call *call);
/** Releases the auth context returned from grpc_call_auth_context. */
GRPCAPI void grpc_auth_context_release(grpc_auth_context *context);
/** --
The following auth context methods should only be called by a server metadata
processor to set properties extracted from auth metadata.
-- */
/** Add a property. */
GRPCAPI void grpc_auth_context_add_property(grpc_auth_context *ctx,
const char *name, const char *value,
size_t value_length);
/** Add a C string property. */
GRPCAPI void grpc_auth_context_add_cstring_property(grpc_auth_context *ctx,
const char *name,
const char *value);
/** Sets the property name. Returns 1 if successful or 0 in case of failure
(which means that no property with this name exists). */
GRPCAPI int grpc_auth_context_set_peer_identity_property_name(
grpc_auth_context *ctx, const char *name);
/** --- grpc_channel_credentials object. ---
A channel credentials object represents a way to authenticate a client on a
channel. */
typedef struct grpc_channel_credentials grpc_channel_credentials;
/** Releases a channel credentials object.
The creator of the credentials object is responsible for its release. */
GRPCAPI void grpc_channel_credentials_release(grpc_channel_credentials *creds);
/** Creates default credentials to connect to a google gRPC service.
WARNING: Do NOT use this credentials to connect to a non-google service as
this could result in an oauth2 token leak. */
GRPCAPI grpc_channel_credentials *grpc_google_default_credentials_create(void);
/** Callback for getting the SSL roots override from the application.
In case of success, *pem_roots_certs must be set to a NULL terminated string
containing the list of PEM encoded root certificates. The ownership is passed
to the core and freed (laster by the core) with gpr_free.
If this function fails and GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment is
set to a valid path, it will override the roots specified this func */
typedef grpc_ssl_roots_override_result (*grpc_ssl_roots_override_callback)(
char **pem_root_certs);
/** Setup a callback to override the default TLS/SSL roots.
This function is not thread-safe and must be called at initialization time
before any ssl credentials are created to have the desired side effect.
If GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment is set to a valid path, the
callback will not be called. */
GRPCAPI void grpc_set_ssl_roots_override_callback(
grpc_ssl_roots_override_callback cb);
/** Object that holds a private key / certificate chain pair in PEM format. */
typedef struct {
/** private_key is the NULL-terminated string containing the PEM encoding of
the client's private key. */
const char *private_key;
/** cert_chain is the NULL-terminated string containing the PEM encoding of
the client's certificate chain. */
const char *cert_chain;
} grpc_ssl_pem_key_cert_pair;
/** Creates an SSL credentials object.
- pem_root_certs is the NULL-terminated string containing the PEM encoding
of the server root certificates. If this parameter is NULL, the
implementation will first try to dereference the file pointed by the
GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable, and if that fails,
try to get the roots set by grpc_override_ssl_default_roots. Eventually,
if all these fail, it will try to get the roots from a well-known place on
disk (in the grpc install directory).
- pem_key_cert_pair is a pointer on the object containing client's private
key and certificate chain. This parameter can be NULL if the client does
not have such a key/cert pair. */
GRPCAPI grpc_channel_credentials *grpc_ssl_credentials_create(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair,
void *reserved);
/** --- grpc_call_credentials object.
A call credentials object represents a way to authenticate on a particular
call. These credentials can be composed with a channel credentials object
so that they are sent with every call on this channel. */
typedef struct grpc_call_credentials grpc_call_credentials;
/** Releases a call credentials object.
The creator of the credentials object is responsible for its release. */
GRPCAPI void grpc_call_credentials_release(grpc_call_credentials *creds);
/** Creates a composite channel credentials object. */
GRPCAPI grpc_channel_credentials *grpc_composite_channel_credentials_create(
grpc_channel_credentials *channel_creds, grpc_call_credentials *call_creds,
void *reserved);
/** Creates a composite call credentials object. */
GRPCAPI grpc_call_credentials *grpc_composite_call_credentials_create(
grpc_call_credentials *creds1, grpc_call_credentials *creds2,
void *reserved);
/** Creates a compute engine credentials object for connecting to Google.
WARNING: Do NOT use this credentials to connect to a non-google service as
this could result in an oauth2 token leak. */
GRPCAPI grpc_call_credentials *grpc_google_compute_engine_credentials_create(
void *reserved);
GRPCAPI gpr_timespec grpc_max_auth_token_lifetime();
/** Creates a JWT credentials object. May return NULL if the input is invalid.
- json_key is the JSON key string containing the client's private key.
- token_lifetime is the lifetime of each Json Web Token (JWT) created with
this credentials. It should not exceed grpc_max_auth_token_lifetime or
will be cropped to this value. */
GRPCAPI grpc_call_credentials *
grpc_service_account_jwt_access_credentials_create(const char *json_key,
gpr_timespec token_lifetime,
void *reserved);
/** Creates an Oauth2 Refresh Token credentials object for connecting to Google.
May return NULL if the input is invalid.
WARNING: Do NOT use this credentials to connect to a non-google service as
this could result in an oauth2 token leak.
- json_refresh_token is the JSON string containing the refresh token itself
along with a client_id and client_secret. */
GRPCAPI grpc_call_credentials *grpc_google_refresh_token_credentials_create(
const char *json_refresh_token, void *reserved);
/** Creates an Oauth2 Access Token credentials with an access token that was
aquired by an out of band mechanism. */
GRPCAPI grpc_call_credentials *grpc_access_token_credentials_create(
const char *access_token, void *reserved);
/** Creates an IAM credentials object for connecting to Google. */
GRPCAPI grpc_call_credentials *grpc_google_iam_credentials_create(
const char *authorization_token, const char *authority_selector,
void *reserved);
/** Callback function to be called by the metadata credentials plugin
implementation when the metadata is ready.
- user_data is the opaque pointer that was passed in the get_metadata method
of the grpc_metadata_credentials_plugin (see below).
- creds_md is an array of credentials metadata produced by the plugin. It
may be set to NULL in case of an error.
- num_creds_md is the number of items in the creds_md array.
- status must be GRPC_STATUS_OK in case of success or another specific error
code otherwise.
- error_details contains details about the error if any. In case of success
it should be NULL and will be otherwise ignored. */
typedef void (*grpc_credentials_plugin_metadata_cb)(
void *user_data, const grpc_metadata *creds_md, size_t num_creds_md,
grpc_status_code status, const char *error_details);
/** Context that can be used by metadata credentials plugin in order to create
auth related metadata. */
typedef struct {
/** The fully qualifed service url. */
const char *service_url;
/** The method name of the RPC being called (not fully qualified).
The fully qualified method name can be built from the service_url:
full_qualified_method_name = ctx->service_url + '/' + ctx->method_name. */
const char *method_name;
/** The auth_context of the channel which gives the server's identity. */
const grpc_auth_context *channel_auth_context;
/** Reserved for future use. */
void *reserved;
} grpc_auth_metadata_context;
/** grpc_metadata_credentials plugin is an API user provided structure used to
create grpc_credentials objects that can be set on a channel (composed) or
a call. See grpc_credentials_metadata_create_from_plugin below.
The grpc client stack will call the get_metadata method of the plugin for
every call in scope for the credentials created from it. */
typedef struct {
/** The implementation of this method has to be non-blocking.
- context is the information that can be used by the plugin to create auth
metadata.
- cb is the callback that needs to be called when the metadata is ready.
- user_data needs to be passed as the first parameter of the callback. */
void (*get_metadata)(void *state, grpc_auth_metadata_context context,
grpc_credentials_plugin_metadata_cb cb, void *user_data);
/** Destroys the plugin state. */
void (*destroy)(void *state);
/** State that will be set as the first parameter of the methods above. */
void *state;
/** Type of credentials that this plugin is implementing. */
const char *type;
} grpc_metadata_credentials_plugin;
/** Creates a credentials object from a plugin. */
GRPCAPI grpc_call_credentials *grpc_metadata_credentials_create_from_plugin(
grpc_metadata_credentials_plugin plugin, void *reserved);
/** --- Secure channel creation. --- */
/** Creates a secure channel using the passed-in credentials. */
GRPCAPI grpc_channel *grpc_secure_channel_create(
grpc_channel_credentials *creds, const char *target,
const grpc_channel_args *args, void *reserved);
/** --- grpc_server_credentials object. ---
A server credentials object represents a way to authenticate a server. */
typedef struct grpc_server_credentials grpc_server_credentials;
/** Releases a server_credentials object.
The creator of the server_credentials object is responsible for its release.
*/
GRPCAPI void grpc_server_credentials_release(grpc_server_credentials *creds);
/** Deprecated in favor of grpc_ssl_server_credentials_create_ex.
Creates an SSL server_credentials object.
- pem_roots_cert is the NULL-terminated string containing the PEM encoding of
the client root certificates. This parameter may be NULL if the server does
not want the client to be authenticated with SSL.
- pem_key_cert_pairs is an array private key / certificate chains of the
server. This parameter cannot be NULL.
- num_key_cert_pairs indicates the number of items in the private_key_files
and cert_chain_files parameters. It should be at least 1.
- force_client_auth, if set to non-zero will force the client to authenticate
with an SSL cert. Note that this option is ignored if pem_root_certs is
NULL. */
GRPCAPI grpc_server_credentials *grpc_ssl_server_credentials_create(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
size_t num_key_cert_pairs, int force_client_auth, void *reserved);
/** Same as grpc_ssl_server_credentials_create method except uses
grpc_ssl_client_certificate_request_type enum to support more ways to
authenticate client cerificates.*/
GRPCAPI grpc_server_credentials *grpc_ssl_server_credentials_create_ex(
const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
size_t num_key_cert_pairs,
grpc_ssl_client_certificate_request_type client_certificate_request,
void *reserved);
/** --- Server-side secure ports. --- */
/** Add a HTTP2 over an encrypted link over tcp listener.
Returns bound port number on success, 0 on failure.
REQUIRES: server not started */
GRPCAPI int grpc_server_add_secure_http2_port(grpc_server *server,
const char *addr,
grpc_server_credentials *creds);
/** --- Call specific credentials. --- */
/** Sets a credentials to a call. Can only be called on the client side before
grpc_call_start_batch. */
GRPCAPI grpc_call_error grpc_call_set_credentials(grpc_call *call,
grpc_call_credentials *creds);
/** --- Auth Metadata Processing --- */
/** Callback function that is called when the metadata processing is done.
- Consumed metadata will be removed from the set of metadata available on the
call. consumed_md may be NULL if no metadata has been consumed.
- Response metadata will be set on the response. response_md may be NULL.
- status is GRPC_STATUS_OK for success or a specific status for an error.
Common error status for auth metadata processing is either
GRPC_STATUS_UNAUTHENTICATED in case of an authentication failure or
GRPC_STATUS PERMISSION_DENIED in case of an authorization failure.
- error_details gives details about the error. May be NULL. */
typedef void (*grpc_process_auth_metadata_done_cb)(
void *user_data, const grpc_metadata *consumed_md, size_t num_consumed_md,
const grpc_metadata *response_md, size_t num_response_md,
grpc_status_code status, const char *error_details);
/** Pluggable server-side metadata processor object. */
typedef struct {
/** The context object is read/write: it contains the properties of the
channel peer and it is the job of the process function to augment it with
properties derived from the passed-in metadata.
The lifetime of these objects is guaranteed until cb is invoked. */
void (*process)(void *state, grpc_auth_context *context,
const grpc_metadata *md, size_t num_md,
grpc_process_auth_metadata_done_cb cb, void *user_data);
void (*destroy)(void *state);
void *state;
} grpc_auth_metadata_processor;
GRPCAPI void grpc_server_credentials_set_auth_metadata_processor(
grpc_server_credentials *creds, grpc_auth_metadata_processor processor);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_GRPC_SECURITY_H */

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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_GRPC_SECURITY_CONSTANTS_H
#define GRPC_GRPC_SECURITY_CONSTANTS_H
#ifdef __cplusplus
extern "C" {
#endif
#define GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME "transport_security_type"
#define GRPC_SSL_TRANSPORT_SECURITY_TYPE "ssl"
#define GRPC_X509_CN_PROPERTY_NAME "x509_common_name"
#define GRPC_X509_SAN_PROPERTY_NAME "x509_subject_alternative_name"
#define GRPC_X509_PEM_CERT_PROPERTY_NAME "x509_pem_cert"
/** Environment variable that points to the default SSL roots file. This file
must be a PEM encoded file with all the roots such as the one that can be
downloaded from https://pki.google.com/roots.pem. */
#define GRPC_DEFAULT_SSL_ROOTS_FILE_PATH_ENV_VAR \
"GRPC_DEFAULT_SSL_ROOTS_FILE_PATH"
/** Environment variable that points to the google default application
credentials json key or refresh token. Used in the
grpc_google_default_credentials_create function. */
#define GRPC_GOOGLE_CREDENTIALS_ENV_VAR "GOOGLE_APPLICATION_CREDENTIALS"
/** Results for the SSL roots override callback. */
typedef enum {
GRPC_SSL_ROOTS_OVERRIDE_OK,
GRPC_SSL_ROOTS_OVERRIDE_FAIL_PERMANENTLY, /** Do not try fallback options. */
GRPC_SSL_ROOTS_OVERRIDE_FAIL
} grpc_ssl_roots_override_result;
typedef enum {
/** Server does not request client certificate. A client can present a self
signed or signed certificates if it wishes to do so and they would be
accepted. */
GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE,
/** Server requests client certificate but does not enforce that the client
presents a certificate.
If the client presents a certificate, the client authentication is left to
the application based on the metadata like certificate etc.
The key cert pair should still be valid for the SSL connection to be
established. */
GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
/** Server requests client certificate but does not enforce that the client
presents a certificate.
If the client presents a certificate, the client authentication is done by
grpc framework (The client needs to either present a signed cert or skip no
certificate for a successful connection).
The key cert pair should still be valid for the SSL connection to be
established. */
GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY,
/** Server requests client certificate but enforces that the client presents a
certificate.
If the client presents a certificate, the client authentication is left to
the application based on the metadata like certificate etc.
The key cert pair should still be valid for the SSL connection to be
established. */
GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
/** Server requests client certificate but enforces that the client presents a
certificate.
The cerificate presented by the client is verified by grpc framework (The
client needs to present signed certs for a successful connection).
The key cert pair should still be valid for the SSL connection to be
established. */
GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
} grpc_ssl_client_certificate_request_type;
#ifdef __cplusplus
}
#endif
#endif /* GRPC_GRPC_SECURITY_CONSTANTS_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_ATM_H
#define GRPC_IMPL_CODEGEN_ATM_H
/** This interface provides atomic operations and barriers.
It is internal to gpr support code and should not be used outside it.
If an operation with acquire semantics precedes another memory access by the
same thread, the operation will precede that other access as seen by other
threads.
If an operation with release semantics follows another memory access by the
same thread, the operation will follow that other access as seen by other
threads.
Routines with "acq" or "full" in the name have acquire semantics. Routines
with "rel" or "full" in the name have release semantics. Routines with
"no_barrier" in the name have neither acquire not release semantics.
The routines may be implemented as macros.
// Atomic operations act on an intergral_type gpr_atm that is guaranteed to
// be the same size as a pointer.
typedef intptr_t gpr_atm;
// A memory barrier, providing both acquire and release semantics, but not
// otherwise acting on memory.
void gpr_atm_full_barrier(void);
// Atomically return *p, with acquire semantics.
gpr_atm gpr_atm_acq_load(gpr_atm *p);
// Atomically set *p = value, with release semantics.
void gpr_atm_rel_store(gpr_atm *p, gpr_atm value);
// Atomically add delta to *p, and return the old value of *p, with
// the barriers specified.
gpr_atm gpr_atm_no_barrier_fetch_add(gpr_atm *p, gpr_atm delta);
gpr_atm gpr_atm_full_fetch_add(gpr_atm *p, gpr_atm delta);
// Atomically, if *p==o, set *p=n and return non-zero otherwise return 0,
// with the barriers specified if the operation succeeds.
int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
int gpr_atm_full_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
// Atomically, set *p=n and return the old value of *p
gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n);
*/
#include <grpc/impl/codegen/port_platform.h>
#if defined(GPR_GCC_ATOMIC)
#include <grpc/impl/codegen/atm_gcc_atomic.h>
#elif defined(GPR_GCC_SYNC)
#include <grpc/impl/codegen/atm_gcc_sync.h>
#elif defined(GPR_WINDOWS_ATOMIC)
#include <grpc/impl/codegen/atm_windows.h>
#else
#error could not determine platform for atm
#endif
/** Adds \a delta to \a *value, clamping the result to the range specified
by \a min and \a max. Returns the new value. */
gpr_atm gpr_atm_no_barrier_clamped_add(gpr_atm *value, gpr_atm delta,
gpr_atm min, gpr_atm max);
#endif /* GRPC_IMPL_CODEGEN_ATM_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
#define GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
/* atm_platform.h for gcc and gcc-like compilers with the
__atomic_* interface. */
#include <grpc/impl/codegen/port_platform.h>
typedef intptr_t gpr_atm;
#define GPR_ATM_MAX INTPTR_MAX
#ifdef GPR_LOW_LEVEL_COUNTERS
extern gpr_atm gpr_counter_atm_cas;
extern gpr_atm gpr_counter_atm_add;
#define GPR_ATM_INC_COUNTER(counter) \
__atomic_fetch_add(&counter, 1, __ATOMIC_RELAXED)
#define GPR_ATM_INC_CAS_THEN(blah) \
(GPR_ATM_INC_COUNTER(gpr_counter_atm_cas), blah)
#define GPR_ATM_INC_ADD_THEN(blah) \
(GPR_ATM_INC_COUNTER(gpr_counter_atm_add), blah)
#else
#define GPR_ATM_INC_CAS_THEN(blah) blah
#define GPR_ATM_INC_ADD_THEN(blah) blah
#endif
#define gpr_atm_full_barrier() (__atomic_thread_fence(__ATOMIC_SEQ_CST))
#define gpr_atm_acq_load(p) (__atomic_load_n((p), __ATOMIC_ACQUIRE))
#define gpr_atm_no_barrier_load(p) (__atomic_load_n((p), __ATOMIC_RELAXED))
#define gpr_atm_rel_store(p, value) \
(__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELEASE))
#define gpr_atm_no_barrier_store(p, value) \
(__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELAXED))
#define gpr_atm_no_barrier_fetch_add(p, delta) \
GPR_ATM_INC_ADD_THEN( \
__atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_RELAXED))
#define gpr_atm_full_fetch_add(p, delta) \
GPR_ATM_INC_ADD_THEN( \
__atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_ACQ_REL))
static __inline int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
p, &o, n, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED));
}
static __inline int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
p, &o, n, 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED));
}
static __inline int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
p, &o, n, 0, __ATOMIC_RELEASE, __ATOMIC_RELAXED));
}
static __inline int gpr_atm_full_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
p, &o, n, 0, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED));
}
#define gpr_atm_full_xchg(p, n) \
GPR_ATM_INC_CAS_THEN(__atomic_exchange_n((p), (n), __ATOMIC_ACQ_REL))
#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
#define GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
/* variant of atm_platform.h for gcc and gcc-like compiers with __sync_*
interface */
#include <grpc/impl/codegen/port_platform.h>
typedef intptr_t gpr_atm;
#define GPR_ATM_MAX INTPTR_MAX
#define GPR_ATM_COMPILE_BARRIER_() __asm__ __volatile__("" : : : "memory")
#if defined(__i386) || defined(__x86_64__)
/* All loads are acquire loads and all stores are release stores. */
#define GPR_ATM_LS_BARRIER_() GPR_ATM_COMPILE_BARRIER_()
#else
#define GPR_ATM_LS_BARRIER_() gpr_atm_full_barrier()
#endif
#define gpr_atm_full_barrier() (__sync_synchronize())
static __inline gpr_atm gpr_atm_acq_load(const gpr_atm *p) {
gpr_atm value = *p;
GPR_ATM_LS_BARRIER_();
return value;
}
static __inline gpr_atm gpr_atm_no_barrier_load(const gpr_atm *p) {
gpr_atm value = *p;
GPR_ATM_COMPILE_BARRIER_();
return value;
}
static __inline void gpr_atm_rel_store(gpr_atm *p, gpr_atm value) {
GPR_ATM_LS_BARRIER_();
*p = value;
}
static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) {
GPR_ATM_COMPILE_BARRIER_();
*p = value;
}
#undef GPR_ATM_LS_BARRIER_
#undef GPR_ATM_COMPILE_BARRIER_
#define gpr_atm_no_barrier_fetch_add(p, delta) \
gpr_atm_full_fetch_add((p), (delta))
#define gpr_atm_full_fetch_add(p, delta) (__sync_fetch_and_add((p), (delta)))
#define gpr_atm_no_barrier_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
#define gpr_atm_acq_cas(p, o, n) (__sync_bool_compare_and_swap((p), (o), (n)))
#define gpr_atm_rel_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
#define gpr_atm_full_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
static __inline gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n) {
gpr_atm cur;
do {
cur = gpr_atm_acq_load(p);
} while (!gpr_atm_rel_cas(p, cur, n));
return cur;
}
#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H */

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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
#define GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
/** Win32 variant of atm_platform.h */
#include <grpc/impl/codegen/port_platform.h>
typedef intptr_t gpr_atm;
#define GPR_ATM_MAX INTPTR_MAX
#define gpr_atm_full_barrier MemoryBarrier
static __inline gpr_atm gpr_atm_acq_load(const gpr_atm *p) {
gpr_atm result = *p;
gpr_atm_full_barrier();
return result;
}
static __inline gpr_atm gpr_atm_no_barrier_load(const gpr_atm *p) {
/* TODO(dklempner): Can we implement something better here? */
return gpr_atm_acq_load(p);
}
static __inline void gpr_atm_rel_store(gpr_atm *p, gpr_atm value) {
gpr_atm_full_barrier();
*p = value;
}
static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) {
/* TODO(ctiller): Can we implement something better here? */
gpr_atm_rel_store(p, value);
}
static __inline int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
/** InterlockedCompareExchangePointerNoFence() not available on vista or
windows7 */
#ifdef GPR_ARCH_64
return o == (gpr_atm)InterlockedCompareExchangeAcquire64(
(volatile LONGLONG *)p, (LONGLONG)n, (LONGLONG)o);
#else
return o == (gpr_atm)InterlockedCompareExchangeAcquire((volatile LONG *)p,
(LONG)n, (LONG)o);
#endif
}
static __inline int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
#ifdef GPR_ARCH_64
return o == (gpr_atm)InterlockedCompareExchangeAcquire64(
(volatile LONGLONG *)p, (LONGLONG)n, (LONGLONG)o);
#else
return o == (gpr_atm)InterlockedCompareExchangeAcquire((volatile LONG *)p,
(LONG)n, (LONG)o);
#endif
}
static __inline int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
#ifdef GPR_ARCH_64
return o == (gpr_atm)InterlockedCompareExchangeRelease64(
(volatile LONGLONG *)p, (LONGLONG)n, (LONGLONG)o);
#else
return o == (gpr_atm)InterlockedCompareExchangeRelease((volatile LONG *)p,
(LONG)n, (LONG)o);
#endif
}
static __inline int gpr_atm_full_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
#ifdef GPR_ARCH_64
return o == (gpr_atm)InterlockedCompareExchange64((volatile LONGLONG *)p,
(LONGLONG)n, (LONGLONG)o);
#else
return o == (gpr_atm)InterlockedCompareExchange((volatile LONG *)p, (LONG)n,
(LONG)o);
#endif
}
static __inline gpr_atm gpr_atm_no_barrier_fetch_add(gpr_atm *p,
gpr_atm delta) {
/** Use the CAS operation to get pointer-sized fetch and add */
gpr_atm old;
do {
old = *p;
} while (!gpr_atm_no_barrier_cas(p, old, old + delta));
return old;
}
static __inline gpr_atm gpr_atm_full_fetch_add(gpr_atm *p, gpr_atm delta) {
/** Use a CAS operation to get pointer-sized fetch and add */
gpr_atm old;
#ifdef GPR_ARCH_64
do {
old = *p;
} while (old != (gpr_atm)InterlockedCompareExchange64((volatile LONGLONG *)p,
(LONGLONG)old + delta,
(LONGLONG)old));
#else
do {
old = *p;
} while (old != (gpr_atm)InterlockedCompareExchange(
(volatile LONG *)p, (LONG)old + delta, (LONG)old));
#endif
return old;
}
static __inline gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n) {
return (gpr_atm)InterlockedExchangePointer((PVOID *)p, (PVOID)n);
}
#endif /* GRPC_IMPL_CODEGEN_ATM_WINDOWS_H */

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linx64/include/grpc/impl/codegen/byte_buffer_reader.h
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
#ifdef __cplusplus
extern "C" {
#endif
struct grpc_byte_buffer;
struct grpc_byte_buffer_reader {
struct grpc_byte_buffer *buffer_in;
struct grpc_byte_buffer *buffer_out;
/** Different current objects correspond to different types of byte buffers */
union grpc_byte_buffer_reader_current {
/** Index into a slice buffer's array of slices */
unsigned index;
} current;
};
#ifdef __cplusplus
}
#endif
#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H */

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