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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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154 lines
4.6 KiB
154 lines
4.6 KiB
/* |
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef GRPCXX_CLIENT_CONTEXT_H |
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#define GRPCXX_CLIENT_CONTEXT_H |
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#include <map> |
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#include <memory> |
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#include <string> |
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#include <grpc/support/log.h> |
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#include <grpc/support/time.h> |
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#include <grpc++/config.h> |
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#include <grpc++/time.h> |
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struct grpc_call; |
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struct grpc_completion_queue; |
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namespace grpc { |
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class CallOpBuffer; |
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class ChannelInterface; |
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class CompletionQueue; |
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class RpcMethod; |
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class Status; |
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template <class R> |
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class ClientReader; |
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template <class W> |
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class ClientWriter; |
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template <class R, class W> |
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class ClientReaderWriter; |
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template <class R> |
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class ClientAsyncReader; |
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template <class W> |
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class ClientAsyncWriter; |
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template <class R, class W> |
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class ClientAsyncReaderWriter; |
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template <class R> |
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class ClientAsyncResponseReader; |
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class ClientContext { |
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public: |
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ClientContext(); |
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~ClientContext(); |
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void AddMetadata(const grpc::string& meta_key, |
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const grpc::string& meta_value); |
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const std::multimap<grpc::string, grpc::string>& GetServerInitialMetadata() { |
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GPR_ASSERT(initial_metadata_received_); |
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return recv_initial_metadata_; |
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} |
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const std::multimap<grpc::string, grpc::string>& GetServerTrailingMetadata() { |
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// TODO(yangg) check finished |
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return trailing_metadata_; |
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} |
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template <typename T> |
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void set_deadline(const T& deadline) { |
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TimePoint<T> deadline_tp(deadline); |
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deadline_ = deadline_tp.raw_time(); |
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} |
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#ifndef GRPC_CXX0X_NO_CHRONO |
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std::chrono::system_clock::time_point deadline() { |
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return Timespec2Timepoint(deadline_); |
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} |
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#endif // !GRPC_CXX0X_NO_CHRONO |
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gpr_timespec raw_deadline() { return deadline_; } |
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void set_authority(const grpc::string& authority) { authority_ = authority; } |
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void TryCancel(); |
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private: |
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// Disallow copy and assign. |
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ClientContext(const ClientContext&); |
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ClientContext& operator=(const ClientContext&); |
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friend class CallOpBuffer; |
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friend class Channel; |
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template <class R> |
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friend class ::grpc::ClientReader; |
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template <class W> |
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friend class ::grpc::ClientWriter; |
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template <class R, class W> |
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friend class ::grpc::ClientReaderWriter; |
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template <class R> |
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friend class ::grpc::ClientAsyncReader; |
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template <class W> |
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friend class ::grpc::ClientAsyncWriter; |
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template <class R, class W> |
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friend class ::grpc::ClientAsyncReaderWriter; |
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template <class R> |
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friend class ::grpc::ClientAsyncResponseReader; |
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grpc_call* call() { return call_; } |
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void set_call(grpc_call* call, const std::shared_ptr<ChannelInterface>& channel) { |
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GPR_ASSERT(call_ == nullptr); |
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call_ = call; |
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channel_ = channel; |
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} |
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grpc_completion_queue* cq() { return cq_; } |
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void set_cq(grpc_completion_queue* cq) { cq_ = cq; } |
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grpc::string authority() { return authority_; } |
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bool initial_metadata_received_; |
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std::shared_ptr<ChannelInterface> channel_; |
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grpc_call* call_; |
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grpc_completion_queue* cq_; |
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gpr_timespec deadline_; |
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grpc::string authority_; |
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std::multimap<grpc::string, grpc::string> send_initial_metadata_; |
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std::multimap<grpc::string, grpc::string> recv_initial_metadata_; |
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std::multimap<grpc::string, grpc::string> trailing_metadata_; |
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}; |
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} // namespace grpc |
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#endif // GRPCXX_CLIENT_CONTEXT_H
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