/*
    * ====================================================================
    * 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());
  
          }
      }
  
  }