| /* |
| * |
| * 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 |