1 /** 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef PANDA_TOOLING_INSPECTOR_CONNECTION_ASIO_SERVER_ENDPOINT_H 17 #define PANDA_TOOLING_INSPECTOR_CONNECTION_ASIO_SERVER_ENDPOINT_H 18 19 #include "websocketpp/common/connection_hdl.hpp" 20 #include "websocketpp/frame.hpp" 21 #include "websocketpp/server.hpp" 22 23 #include "connection/server_endpoint_base.h" 24 25 namespace ark::tooling::inspector { 26 // Server endpoint based on websocketpp implementation. 27 // NOLINTNEXTLINE(fuchsia-multiple-inheritance) 28 template <typename Config> 29 class ServerEndpoint : public ServerEndpointBase { 30 protected: 31 using Endpoint = websocketpp::server<Config>; 32 using ConnectionPtr = typename Endpoint::connection_ptr; 33 34 public: 35 ServerEndpoint() noexcept; 36 37 protected: GetPinnedConnection()38 ConnectionPtr GetPinnedConnection() 39 { 40 return connection_; 41 } 42 Pin(const websocketpp::connection_hdl & hdl)43 bool Pin(const websocketpp::connection_hdl &hdl) 44 { 45 ConnectionPtr expected; 46 // set new connection only if there is no already existing one 47 return std::atomic_compare_exchange_strong(&connection_, &expected, endpoint_.get_con_from_hdl(hdl)); 48 } 49 Unpin(const websocketpp::connection_hdl & hdl)50 void Unpin(const websocketpp::connection_hdl &hdl) 51 { 52 auto expected = endpoint_.get_con_from_hdl(hdl); 53 // expect that the given connection is the one already stored 54 std::atomic_compare_exchange_strong(&connection_, &expected, {}); 55 } 56 57 bool Close(); 58 59 Endpoint endpoint_; // NOLINT(misc-non-private-member-variables-in-classes) 60 61 private: SendMessage(const std::string & message)62 void SendMessage(const std::string &message) override 63 { 64 if (auto connection = GetPinnedConnection()) { 65 connection->send(message, websocketpp::frame::opcode::text); 66 } else { 67 LOG(INFO, DEBUGGER) << "Did not send message: " << message; 68 } 69 } 70 71 ConnectionPtr connection_; 72 }; 73 } // namespace ark::tooling::inspector 74 75 #endif // PANDA_TOOLING_INSPECTOR_CONNECTION_ASIO_SERVER_ENDPOINT_H 76