| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.hc.client5.http.examples; |
| |
| import org.apache.hc.client5.http.classic.methods.HttpGet; |
| import org.apache.hc.client5.http.impl.classic.CloseableHttpClient; |
| import org.apache.hc.client5.http.impl.classic.HttpClients; |
| import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager; |
| import org.apache.hc.core5.http.io.entity.EntityUtils; |
| import org.apache.hc.core5.http.message.StatusLine; |
| import org.apache.hc.core5.pool.PoolStats; |
| import org.apache.hc.core5.util.TimeValue; |
| |
| /** |
| * Example demonstrating how to evict expired and idle connections |
| * from the connection pool. |
| */ |
| public class ClientEvictExpiredConnections { |
| |
| public static void main(final String[] args) throws Exception { |
| final PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(); |
| cm.setMaxTotal(100); |
| try (final CloseableHttpClient httpclient = HttpClients.custom() |
| .setConnectionManager(cm) |
| .evictExpiredConnections() |
| .evictIdleConnections(TimeValue.ofSeconds(5)) |
| .build()) { |
| // create an array of URIs to perform GETs on |
| final String[] urisToGet = { |
| "http://hc.apache.org/", |
| "http://hc.apache.org/httpcomponents-core-ga/", |
| "http://hc.apache.org/httpcomponents-client-ga/", |
| }; |
| |
| for (final String requestURI : urisToGet) { |
| final HttpGet request = new HttpGet(requestURI); |
| |
| System.out.println("Executing request " + request.getMethod() + " " + request.getRequestUri()); |
| |
| httpclient.execute(request, response -> { |
| System.out.println("----------------------------------------"); |
| System.out.println(request + "->" + new StatusLine(response)); |
| EntityUtils.consume(response.getEntity()); |
| return null; |
| }); |
| } |
| |
| final PoolStats stats1 = cm.getTotalStats(); |
| System.out.println("Connections kept alive: " + stats1.getAvailable()); |
| |
| // Sleep 10 sec and let the connection evictor do its job |
| Thread.sleep(10000); |
| |
| final PoolStats stats2 = cm.getTotalStats(); |
| System.out.println("Connections kept alive: " + stats2.getAvailable()); |
| |
| } |
| } |
| |
| } |