David Garcia Quintas | 6bd7b97 | 2016-01-27 19:21:12 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2016, Google Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #ifndef GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H |
| 35 | #define GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H |
| 36 | |
| 37 | #include <climits> |
| 38 | #include <functional> |
| 39 | #include <map> |
| 40 | #include <memory> |
| 41 | #include <vector> |
| 42 | |
| 43 | #include <grpc++/impl/codegen/config.h> |
| 44 | #include <grpc++/impl/codegen/rpc_method.h> |
| 45 | #include <grpc++/impl/codegen/status.h> |
| 46 | |
| 47 | namespace grpc { |
| 48 | class ServerContext; |
| 49 | class StreamContextInterface; |
| 50 | |
| 51 | // Base class for running an RPC handler. |
| 52 | class MethodHandler { |
| 53 | public: |
| 54 | virtual ~MethodHandler() {} |
| 55 | struct HandlerParameter { |
| 56 | HandlerParameter(Call* c, ServerContext* context, grpc_byte_buffer* req, |
| 57 | int max_size) |
| 58 | : call(c), |
| 59 | server_context(context), |
| 60 | request(req), |
| 61 | max_message_size(max_size) {} |
| 62 | Call* call; |
| 63 | ServerContext* server_context; |
| 64 | // Handler required to grpc_byte_buffer_destroy this |
| 65 | grpc_byte_buffer* request; |
| 66 | int max_message_size; |
| 67 | }; |
| 68 | virtual void RunHandler(const HandlerParameter& param) = 0; |
| 69 | }; |
| 70 | |
| 71 | // Server side rpc method class |
| 72 | class RpcServiceMethod : public RpcMethod { |
| 73 | public: |
| 74 | // Takes ownership of the handler |
| 75 | RpcServiceMethod(const char* name, RpcMethod::RpcType type, |
| 76 | MethodHandler* handler) |
| 77 | : RpcMethod(name, type), server_tag_(nullptr), handler_(handler) {} |
| 78 | |
| 79 | void set_server_tag(void* tag) { server_tag_ = tag; } |
| 80 | void* server_tag() const { return server_tag_; } |
| 81 | // if MethodHandler is nullptr, then this is an async method |
| 82 | MethodHandler* handler() const { return handler_.get(); } |
| 83 | void ResetHandler() { handler_.reset(); } |
| 84 | |
| 85 | private: |
| 86 | void* server_tag_; |
| 87 | std::unique_ptr<MethodHandler> handler_; |
| 88 | }; |
| 89 | |
| 90 | } // namespace grpc |
| 91 | |
| 92 | #endif // GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H |