Java tutorial
/* * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0.1/contrib/src/main/java/org/apache/http/contrib/benchmark/BenchmarkWorker.java $ * $Revision: 744512 $ * $Date: 2009-02-14 17:34:15 +0100 (Sat, 14 Feb 2009) $ * * ==================================================================== * 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.contrib.benchmark; import java.io.IOException; import java.io.InputStream; import java.net.Socket; import javax.net.SocketFactory; import javax.net.ssl.SSLSocketFactory; import org.apache.http.ConnectionReuseStrategy; import org.apache.http.Header; import org.apache.http.HeaderIterator; import org.apache.http.HttpEntity; import org.apache.http.HttpException; import org.apache.http.HttpHost; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.impl.DefaultConnectionReuseStrategy; import org.apache.http.impl.DefaultHttpClientConnection; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpParams; import org.apache.http.params.DefaultedHttpParams; import org.apache.http.protocol.BasicHttpProcessor; import org.apache.http.protocol.HTTP; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.ExecutionContext; import org.apache.http.protocol.HttpRequestExecutor; import org.apache.http.protocol.RequestConnControl; import org.apache.http.protocol.RequestContent; import org.apache.http.protocol.RequestExpectContinue; import org.apache.http.protocol.RequestTargetHost; import org.apache.http.protocol.RequestUserAgent; import org.apache.http.util.EntityUtils; /** * Worker thread for the {@link HttpBenchmark HttpBenchmark}. * * * <!-- empty lines above to avoid 'svn diff' context problems --> * @version $Revision: 744512 $ * * @since 4.0 */ public class BenchmarkWorker implements Runnable { private byte[] buffer = new byte[4096]; private final int verbosity; private final HttpParams params; private final HttpContext context; private final BasicHttpProcessor httpProcessor; private final HttpRequestExecutor httpexecutor; private final ConnectionReuseStrategy connstrategy; private final HttpRequest request; private final HttpHost targetHost; private final int count; private final boolean keepalive; private final Stats stats = new Stats(); public BenchmarkWorker(final HttpParams params, int verbosity, final HttpRequest request, final HttpHost targetHost, int count, boolean keepalive) { super(); this.params = params; this.context = new BasicHttpContext(null); this.request = request; this.targetHost = targetHost; this.count = count; this.keepalive = keepalive; this.httpProcessor = new BasicHttpProcessor(); this.httpexecutor = new HttpRequestExecutor(); // Required request interceptors this.httpProcessor.addInterceptor(new RequestContent()); this.httpProcessor.addInterceptor(new RequestTargetHost()); // Recommended request interceptors this.httpProcessor.addInterceptor(new RequestConnControl()); this.httpProcessor.addInterceptor(new RequestUserAgent()); this.httpProcessor.addInterceptor(new RequestExpectContinue()); this.connstrategy = new DefaultConnectionReuseStrategy(); this.verbosity = verbosity; } public void run() { HttpResponse response = null; DefaultHttpClientConnection conn = new DefaultHttpClientConnection(); String hostname = targetHost.getHostName(); int port = targetHost.getPort(); if (port == -1) { port = 80; } // Populate the execution context this.context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn); this.context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, this.targetHost); this.context.setAttribute(ExecutionContext.HTTP_REQUEST, this.request); stats.start(); request.setParams(new DefaultedHttpParams(new BasicHttpParams(), this.params)); for (int i = 0; i < count; i++) { try { resetHeader(request); if (!conn.isOpen()) { Socket socket = null; if ("https".equals(targetHost.getSchemeName())) { SocketFactory socketFactory = SSLSocketFactory.getDefault(); socket = socketFactory.createSocket(hostname, port); } else { socket = new Socket(hostname, port); } conn.bind(socket, params); } try { // Prepare request this.httpexecutor.preProcess(this.request, this.httpProcessor, this.context); // Execute request and get a response response = this.httpexecutor.execute(this.request, conn, this.context); // Finalize response this.httpexecutor.postProcess(response, this.httpProcessor, this.context); } catch (HttpException e) { stats.incWriteErrors(); if (this.verbosity >= 2) { System.err.println("Failed HTTP request : " + e.getMessage()); } continue; } verboseOutput(response); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { stats.incSuccessCount(); } else { stats.incFailureCount(); continue; } HttpEntity entity = response.getEntity(); String charset = EntityUtils.getContentCharSet(entity); if (charset == null) { charset = HTTP.DEFAULT_CONTENT_CHARSET; } long contentlen = 0; if (entity != null) { InputStream instream = entity.getContent(); int l = 0; while ((l = instream.read(this.buffer)) != -1) { stats.incTotalBytesRecv(l); contentlen += l; if (this.verbosity >= 4) { String s = new String(this.buffer, 0, l, charset); System.out.print(s); } } instream.close(); } if (this.verbosity >= 4) { System.out.println(); System.out.println(); } if (!keepalive || !this.connstrategy.keepAlive(response, this.context)) { conn.close(); } stats.setContentLength(contentlen); } catch (IOException ex) { ex.printStackTrace(); stats.incFailureCount(); if (this.verbosity >= 2) { System.err.println("I/O error: " + ex.getMessage()); } } } stats.finish(); if (response != null) { Header header = response.getFirstHeader("Server"); if (header != null) { stats.setServerName(header.getValue()); } } try { conn.close(); } catch (IOException ex) { ex.printStackTrace(); stats.incFailureCount(); if (this.verbosity >= 2) { System.err.println("I/O error: " + ex.getMessage()); } } } private void verboseOutput(HttpResponse response) { if (this.verbosity >= 3) { System.out.println(">> " + request.getRequestLine().toString()); Header[] headers = request.getAllHeaders(); for (int h = 0; h < headers.length; h++) { System.out.println(">> " + headers[h].toString()); } System.out.println(); } if (this.verbosity >= 2) { System.out.println(response.getStatusLine().getStatusCode()); } if (this.verbosity >= 3) { System.out.println("<< " + response.getStatusLine().toString()); Header[] headers = response.getAllHeaders(); for (int h = 0; h < headers.length; h++) { System.out.println("<< " + headers[h].toString()); } System.out.println(); } } private static void resetHeader(final HttpRequest request) { for (HeaderIterator it = request.headerIterator(); it.hasNext();) { Header header = it.nextHeader(); if (!(header instanceof DefaultHeader)) { it.remove(); } } } public Stats getStats() { return stats; } }