| /* |
| * |
| * Copyright 2015-2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPCXX_CHANNEL_H |
| #define GRPCXX_CHANNEL_H |
| |
| #include <memory> |
| |
| #include <grpc/grpc.h> |
| #include <grpc++/impl/call.h> |
| #include <grpc++/impl/codegen/channel_interface.h> |
| #include <grpc++/impl/grpc_library.h> |
| #include <grpc++/support/config.h> |
| |
| struct grpc_channel; |
| |
| namespace grpc { |
| /// Channels represent a connection to an endpoint. Created by \a CreateChannel. |
| class Channel GRPC_FINAL : public ChannelInterface, |
| public GrpcLibrary, |
| public CallHook, |
| public std::enable_shared_from_this<Channel> { |
| 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) GRPC_OVERRIDE; |
| |
| 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) GRPC_OVERRIDE; |
| void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) GRPC_OVERRIDE; |
| void* RegisterMethod(const char* method) GRPC_OVERRIDE; |
| |
| void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed, |
| gpr_timespec deadline, CompletionQueue* cq, |
| void* tag) GRPC_OVERRIDE; |
| bool WaitForStateChangeImpl(grpc_connectivity_state last_observed, |
| gpr_timespec deadline) GRPC_OVERRIDE; |
| |
| const grpc::string host_; |
| grpc_channel* const c_channel_; // owned |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_CHANNEL_H |