| /* |
| * ==================================================================== |
| * 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.http.examples.nio.client; |
| |
| import org.apache.http.HttpResponse; |
| import org.apache.http.client.methods.HttpGet; |
| import org.apache.http.concurrent.FutureCallback; |
| import org.apache.http.impl.nio.client.CloseableHttpAsyncClient; |
| import org.apache.http.impl.nio.client.HttpAsyncClients; |
| import org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager; |
| import org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor; |
| import org.apache.http.nio.conn.NHttpClientConnectionManager; |
| import org.apache.http.nio.reactor.ConnectingIOReactor; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Example demonstrating how to evict expired and idle connections |
| * from the connection pool. |
| */ |
| public class AsyncClientEvictExpiredConnections { |
| |
| public static void main(String[] args) throws Exception { |
| ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(); |
| PoolingNHttpClientConnectionManager cm = new PoolingNHttpClientConnectionManager(ioReactor); |
| cm.setMaxTotal(100); |
| CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom() |
| .setConnectionManager(cm) |
| .build(); |
| try { |
| httpclient.start(); |
| |
| // create an array of URIs to perform GETs on |
| String[] urisToGet = { |
| "http://hc.apache.org/", |
| "http://hc.apache.org/httpcomponents-core-ga/", |
| "http://hc.apache.org/httpcomponents-client-ga/", |
| }; |
| |
| IdleConnectionEvictor connEvictor = new IdleConnectionEvictor(cm); |
| connEvictor.start(); |
| |
| final CountDownLatch latch = new CountDownLatch(urisToGet.length); |
| for (final String uri: urisToGet) { |
| final HttpGet httpget = new HttpGet(uri); |
| httpclient.execute(httpget, new FutureCallback<HttpResponse>() { |
| |
| public void completed(final HttpResponse response) { |
| latch.countDown(); |
| System.out.println(httpget.getRequestLine() + "->" + response.getStatusLine()); |
| } |
| |
| public void failed(final Exception ex) { |
| latch.countDown(); |
| System.out.println(httpget.getRequestLine() + "->" + ex); |
| } |
| |
| public void cancelled() { |
| latch.countDown(); |
| System.out.println(httpget.getRequestLine() + " cancelled"); |
| } |
| |
| }); |
| } |
| latch.await(); |
| |
| // Sleep 10 sec and let the connection evictor do its job |
| Thread.sleep(20000); |
| |
| // Shut down the evictor thread |
| connEvictor.shutdown(); |
| connEvictor.join(); |
| |
| } finally { |
| httpclient.close(); |
| } |
| } |
| |
| public static class IdleConnectionEvictor extends Thread { |
| |
| private final NHttpClientConnectionManager connMgr; |
| |
| private volatile boolean shutdown; |
| |
| public IdleConnectionEvictor(NHttpClientConnectionManager connMgr) { |
| super(); |
| this.connMgr = connMgr; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| while (!shutdown) { |
| synchronized (this) { |
| wait(5000); |
| // Close expired connections |
| connMgr.closeExpiredConnections(); |
| // Optionally, close connections |
| // that have been idle longer than 5 sec |
| connMgr.closeIdleConnections(5, TimeUnit.SECONDS); |
| } |
| } |
| } catch (InterruptedException ex) { |
| // terminate |
| } |
| } |
| |
| public void shutdown() { |
| shutdown = true; |
| synchronized (this) { |
| notifyAll(); |
| } |
| } |
| |
| } |
| |
| } |