1 /* 2 * Copyright (c) Facebook, Inc. and its affiliates. 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 #pragma once 18 19 #include <stdint.h> 20 21 #include <memory> 22 #include <string> 23 #include <unordered_map> 24 #include <vector> 25 26 #include <folly/Synchronized.h> 27 #include <folly/io/async/ScopedEventBaseThread.h> 28 #include <thrift/lib/cpp2/transport/core/ClientConnectionIf.h> 29 30 DECLARE_string(transport); 31 32 namespace apache { 33 namespace thrift { 34 35 /** 36 * A connection thread that handles connections to servers - one 37 * connection per server. 38 */ 39 class ConnectionThread : public folly::ScopedEventBaseThread { 40 public: 41 ConnectionThread() = default; 42 ~ConnectionThread(); 43 44 // Returns a connection that may be used to talk to a server at 45 // "addr:port". 46 std::shared_ptr<ClientConnectionIf> getConnection( 47 const std::string& addr, uint16_t port); 48 49 private: 50 // Creates a new connection on the provided event base if necessary. 51 void maybeCreateConnection( 52 const std::string& serverKey, const std::string& addr, uint16_t port); 53 54 folly::Synchronized< 55 std::unordered_map<std::string, std::shared_ptr<ClientConnectionIf>>> 56 connections_; 57 }; 58 59 } // namespace thrift 60 } // namespace apache 61