1 /** 2 * Copyright 2021 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MINDSPORE_CCSRC_PS_CORE_COMMUNICATOR_MESSAGE_HANDLER_H_ 18 #define MINDSPORE_CCSRC_PS_CORE_COMMUNICATOR_MESSAGE_HANDLER_H_ 19 20 namespace mindspore { 21 namespace ps { 22 namespace core { 23 typedef void (*RefBufferRelCallback)(const void *data, size_t datalen, void *extra); 24 // MessageHandler class is used to handle requests from clients and send response from server. 25 // It's the base class of HttpMsgHandler and TcpMsgHandler. 26 class MessageHandler { 27 public: 28 MessageHandler() = default; 29 virtual ~MessageHandler() = default; 30 31 // Raw data of this message in bytes. 32 virtual void *data() const = 0; 33 34 // Raw data size of this message.(Number of bytes) 35 virtual size_t len() const = 0; 36 37 virtual bool SendResponse(const void *data, const size_t &len) = 0; SendResponseInference(const void * data,const size_t & len,RefBufferRelCallback cb)38 virtual bool SendResponseInference(const void *data, const size_t &len, RefBufferRelCallback cb) { 39 auto ret = SendResponse(data, len); 40 if (cb) { 41 cb(data, len, nullptr); 42 } 43 return ret; 44 } 45 }; 46 } // namespace core 47 } // namespace ps 48 } // namespace mindspore 49 #endif // MINDSPORE_CCSRC_PS_CORE_COMMUNICATOR_MESSAGE_HANDLER_H_ 50