| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| #include "ConnectionPool.h" |
| |
| #include "LogUtils.h" |
| #include "Url.h" |
| |
| #include <boost/asio.hpp> |
| #include <boost/asio/ssl.hpp> |
| |
| using boost::asio::ip::tcp; |
| namespace ssl = boost::asio::ssl; |
| typedef ssl::stream<tcp::socket> ssl_socket; |
| |
| DECLARE_LOG_OBJECT() |
| |
| namespace pulsar { |
| |
| ConnectionPool::ConnectionPool(const ClientConfiguration& conf, ExecutorServiceProviderPtr executorProvider, |
| const AuthenticationPtr& authentication, bool poolConnections) |
| : clientConfiguration_(conf), |
| executorProvider_(executorProvider), |
| authentication_(authentication), |
| pool_(), |
| poolConnections_(poolConnections), |
| mutex_() {} |
| |
| bool ConnectionPool::close() { |
| bool expectedState = false; |
| if (!closed_.compare_exchange_strong(expectedState, true)) { |
| return false; |
| } |
| |
| std::unique_lock<std::mutex> lock(mutex_); |
| if (poolConnections_) { |
| for (auto cnxIt = pool_.begin(); cnxIt != pool_.end(); cnxIt++) { |
| ClientConnectionPtr cnx = cnxIt->second.lock(); |
| if (cnx) { |
| cnx->close(); |
| } |
| } |
| pool_.clear(); |
| } |
| return true; |
| } |
| |
| Future<Result, ClientConnectionWeakPtr> ConnectionPool::getConnectionAsync( |
| const std::string& logicalAddress, const std::string& physicalAddress) { |
| if (closed_) { |
| Promise<Result, ClientConnectionWeakPtr> promise; |
| promise.setFailed(ResultAlreadyClosed); |
| return promise.getFuture(); |
| } |
| |
| std::unique_lock<std::mutex> lock(mutex_); |
| |
| if (poolConnections_) { |
| PoolMap::iterator cnxIt = pool_.find(logicalAddress); |
| if (cnxIt != pool_.end()) { |
| ClientConnectionPtr cnx = cnxIt->second.lock(); |
| |
| if (cnx && !cnx->isClosed()) { |
| // Found a valid or pending connection in the pool |
| LOG_DEBUG("Got connection from pool for " << logicalAddress << " use_count: " // |
| << (cnx.use_count() - 1) << " @ " << cnx.get()); |
| return cnx->getConnectFuture(); |
| } else { |
| // Deleting stale connection |
| LOG_INFO("Deleting stale connection from pool for " |
| << logicalAddress << " use_count: " << (cnx.use_count() - 1) << " @ " << cnx.get()); |
| pool_.erase(logicalAddress); |
| } |
| } |
| } |
| |
| // No valid or pending connection found in the pool, creating a new one |
| ClientConnectionPtr cnx(new ClientConnection(logicalAddress, physicalAddress, executorProvider_->get(), |
| clientConfiguration_, authentication_)); |
| |
| LOG_INFO("Created connection for " << logicalAddress); |
| |
| Future<Result, ClientConnectionWeakPtr> future = cnx->getConnectFuture(); |
| pool_.insert(std::make_pair(logicalAddress, cnx)); |
| |
| lock.unlock(); |
| |
| cnx->tcpConnectAsync(); |
| return future; |
| } |
| |
| } // namespace pulsar |