| /* |
| * |
| * Copyright 2014, 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 __GRPCPP_CALL_H__ |
| #define __GRPCPP_CALL_H__ |
| |
| #include <grpc/grpc.h> |
| #include <grpc++/status.h> |
| #include <grpc++/completion_queue.h> |
| |
| #include <memory> |
| #include <map> |
| |
| namespace google { |
| namespace protobuf { |
| class Message; |
| } // namespace protobuf |
| } // namespace google |
| |
| struct grpc_call; |
| struct grpc_op; |
| |
| namespace grpc { |
| |
| class ChannelInterface; |
| |
| class CallOpBuffer final : public CompletionQueueTag { |
| public: |
| CallOpBuffer() : return_tag_(this) {} |
| |
| void Reset(void *next_return_tag); |
| |
| // Does not take ownership. |
| void AddSendInitialMetadata( |
| std::multimap<grpc::string, grpc::string> *metadata); |
| void AddSendMessage(const google::protobuf::Message &message); |
| void AddRecvMessage(google::protobuf::Message *message); |
| void AddClientSendClose(); |
| void AddClientRecvStatus(Status *status); |
| void AddServerSendStatus(std::multimap<grpc::string, grpc::string> *metadata, const Status& status); |
| |
| // INTERNAL API: |
| |
| // Convert to an array of grpc_op elements |
| void FillOps(grpc_op *ops, size_t *nops); |
| |
| // Release send buffers. |
| void ReleaseSendBuffer(); |
| |
| // Called by completion queue just prior to returning from Next() or Pluck() |
| void FinalizeResult(void *tag, bool *status) override; |
| |
| private: |
| void *return_tag_ = nullptr; |
| size_t initial_metadata_count_ = 0; |
| grpc_metadata* initial_metadata_ = nullptr; |
| const google::protobuf::Message* send_message_ = nullptr; |
| grpc_byte_buffer* write_buffer_ = nullptr; |
| google::protobuf::Message* recv_message_ = nullptr; |
| grpc_byte_buffer* recv_message_buf_ = nullptr; |
| bool client_send_close_ = false; |
| Status* recv_status_ = nullptr; |
| grpc_status_code status_code_ = GRPC_STATUS_OK; |
| char* status_details_ = nullptr; |
| size_t status_details_capacity_ = 0; |
| }; |
| |
| class CCallDeleter { |
| public: |
| void operator()(grpc_call *c); |
| }; |
| |
| // Straightforward wrapping of the C call object |
| class Call final { |
| public: |
| Call(grpc_call *call, ChannelInterface *channel, CompletionQueue *cq); |
| |
| void PerformOps(CallOpBuffer *buffer); |
| |
| grpc_call *call() { return call_.get(); } |
| CompletionQueue *cq() { return cq_; } |
| |
| private: |
| ChannelInterface *channel_; |
| CompletionQueue *cq_; |
| std::unique_ptr<grpc_call, CCallDeleter> call_; |
| }; |
| |
| } // namespace grpc |
| |
| #endif // __GRPCPP_CALL_INTERFACE_H__ |