| /* |
| * |
| * Copyright 2015, 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_IMPL_CALL_H |
| #define GRPCXX_IMPL_CALL_H |
| |
| #include <grpc/grpc.h> |
| #include <grpc++/completion_queue.h> |
| #include <grpc++/config.h> |
| #include <grpc++/status.h> |
| |
| #include <memory> |
| #include <map> |
| |
| struct grpc_call; |
| struct grpc_op; |
| |
| namespace grpc { |
| |
| class ByteBuffer; |
| class Call; |
| |
| class CallOpBuffer : public CompletionQueueTag { |
| public: |
| CallOpBuffer(); |
| ~CallOpBuffer(); |
| |
| void Reset(void* next_return_tag); |
| |
| // Does not take ownership. |
| void AddSendInitialMetadata( |
| std::multimap<grpc::string, grpc::string>* metadata); |
| void AddSendInitialMetadata(ClientContext* ctx); |
| void AddRecvInitialMetadata(ClientContext* ctx); |
| void AddSendMessage(const grpc::protobuf::Message& message); |
| void AddSendMessage(const ByteBuffer& message); |
| void AddRecvMessage(grpc::protobuf::Message* message); |
| void AddRecvMessage(ByteBuffer* message); |
| void AddClientSendClose(); |
| void AddClientRecvStatus(ClientContext* ctx, Status* status); |
| void AddServerSendStatus(std::multimap<grpc::string, grpc::string>* metadata, |
| const Status& status); |
| void AddServerRecvClose(bool* cancelled); |
| |
| // INTERNAL API: |
| |
| // Convert to an array of grpc_op elements |
| void FillOps(grpc_op* ops, size_t* nops); |
| |
| // Called by completion queue just prior to returning from Next() or Pluck() |
| bool FinalizeResult(void** tag, bool* status) GRPC_OVERRIDE; |
| |
| bool got_message; |
| |
| private: |
| void* return_tag_; |
| // Send initial metadata |
| bool send_initial_metadata_; |
| size_t initial_metadata_count_; |
| grpc_metadata* initial_metadata_; |
| // Recv initial metadta |
| std::multimap<grpc::string, grpc::string>* recv_initial_metadata_; |
| grpc_metadata_array recv_initial_metadata_arr_; |
| // Send message |
| const grpc::protobuf::Message* send_message_; |
| const ByteBuffer* send_message_buffer_; |
| grpc_byte_buffer* send_buf_; |
| // Recv message |
| grpc::protobuf::Message* recv_message_; |
| ByteBuffer* recv_message_buffer_; |
| grpc_byte_buffer* recv_buf_; |
| // Client send close |
| bool client_send_close_; |
| // Client recv status |
| std::multimap<grpc::string, grpc::string>* recv_trailing_metadata_; |
| Status* recv_status_; |
| grpc_metadata_array recv_trailing_metadata_arr_; |
| grpc_status_code status_code_; |
| char* status_details_; |
| size_t status_details_capacity_; |
| // Server send status |
| const Status* send_status_; |
| size_t trailing_metadata_count_; |
| grpc_metadata* trailing_metadata_; |
| int cancelled_buf_; |
| bool* recv_closed_; |
| }; |
| |
| // Channel and Server implement this to allow them to hook performing ops |
| class CallHook { |
| public: |
| virtual ~CallHook() {} |
| virtual void PerformOpsOnCall(CallOpBuffer* ops, Call* call) = 0; |
| }; |
| |
| // Straightforward wrapping of the C call object |
| class Call GRPC_FINAL { |
| public: |
| /* call is owned by the caller */ |
| Call(grpc_call* call, CallHook* call_hook_, CompletionQueue* cq); |
| |
| void PerformOps(CallOpBuffer* buffer); |
| |
| grpc_call* call() { return call_; } |
| CompletionQueue* cq() { return cq_; } |
| |
| private: |
| CallHook* call_hook_; |
| CompletionQueue* cq_; |
| grpc_call* call_; |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_IMPL_CALL_H |