Java tutorial
/* * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0.1/contrib/src/main/java/org/apache/http/contrib/benchmark/CommandLineUtils.java $ * $Revision: 693050 $ * $Date: 2008-09-08 12:50:56 +0200 (Mon, 08 Sep 2008) $ * * ==================================================================== * 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 org.apache.commons.cli.CommandLine; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import java.io.File; import java.net.MalformedURLException; import java.net.URL; public class CommandLineUtils { static Options getOptions() { Option iopt = new Option("i", false, "Do HEAD requests instead of GET."); iopt.setRequired(false); Option oopt = new Option("o", false, "Use HTTP/S 1.0"); oopt.setRequired(false); Option kopt = new Option("k", false, "Enable the HTTP KeepAlive feature, " + "i.e., perform multiple requests within one HTTP session. " + "Default is no KeepAlive"); kopt.setRequired(false); Option nopt = new Option("n", true, "Number of requests to perform for the " + "benchmarking session. The default is to just perform a single " + "request which usually leads to non-representative benchmarking " + "results."); nopt.setRequired(false); nopt.setArgName("requests"); Option copt = new Option("c", true, "Concurrency while performing the " + "benchmarking session. The default is to just use a single thread/client."); copt.setRequired(false); copt.setArgName("concurrency"); Option popt = new Option("p", true, "File containing data to POST."); popt.setRequired(false); popt.setArgName("POST-postFile"); Option Topt = new Option("T", true, "Content-type header to use for POST data."); Topt.setRequired(false); Topt.setArgName("content-type"); Option topt = new Option("t", true, "Client side socket timeout (in ms) - default 60 Secs"); topt.setRequired(false); topt.setArgName("socket-Timeout"); Option Hopt = new Option("H", true, "Add arbitrary header line, " + "eg. 'Accept-Encoding: gzip' inserted after all normal " + "header lines. (repeatable as -H \"h1: v1\",\"h2: v2\" etc)"); Hopt.setRequired(false); Hopt.setArgName("header"); Option vopt = new Option("v", true, "Set verbosity level - 4 and above " + "prints response content, 3 and above prints " + "information on headers, 2 and above prints response codes (404, 200, " + "etc.), 1 and above prints warnings and info."); vopt.setRequired(false); vopt.setArgName("verbosity"); Option hopt = new Option("h", false, "Display usage information."); nopt.setRequired(false); Options options = new Options(); options.addOption(iopt); options.addOption(kopt); options.addOption(nopt); options.addOption(copt); options.addOption(popt); options.addOption(Topt); options.addOption(vopt); options.addOption(Hopt); options.addOption(hopt); options.addOption(topt); options.addOption(oopt); return options; } static void parseCommandLine(CommandLine cmd, HttpBenchmark httpBenchmark) { if (cmd.hasOption('v')) { String s = cmd.getOptionValue('v'); try { httpBenchmark.verbosity = Integer.parseInt(s); } catch (NumberFormatException ex) { printError("Invalid verbosity level: " + s); } } if (cmd.hasOption('k')) { httpBenchmark.keepAlive = true; } if (cmd.hasOption('c')) { String s = cmd.getOptionValue('c'); try { httpBenchmark.threads = Integer.parseInt(s); } catch (NumberFormatException ex) { printError("Invalid number for concurrency: " + s); } } if (cmd.hasOption('n')) { String s = cmd.getOptionValue('n'); try { httpBenchmark.requests = Integer.parseInt(s); } catch (NumberFormatException ex) { printError("Invalid number of requests: " + s); } } try { httpBenchmark.url = new URL(cmd.getArgs()[0]); } catch (MalformedURLException e) { printError("Invalid request URL : " + cmd.getArgs()[0]); } if (cmd.hasOption('p')) { httpBenchmark.postFile = new File(cmd.getOptionValue('p')); if (!httpBenchmark.postFile.exists()) { printError("File not found: " + httpBenchmark.postFile); } } if (cmd.hasOption('T')) { httpBenchmark.contentType = cmd.getOptionValue('T'); } if (cmd.hasOption('i')) { httpBenchmark.doHeadInsteadOfGet = true; } if (cmd.hasOption('H')) { String headerStr = cmd.getOptionValue('H'); httpBenchmark.headers = headerStr.split(","); } if (cmd.hasOption('t')) { String t = cmd.getOptionValue('t'); try { httpBenchmark.socketTimeout = Integer.parseInt(t); } catch (NumberFormatException ex) { printError("Invalid socket timeout: " + t); } } if (cmd.hasOption('o')) { httpBenchmark.useHttp1_0 = true; } } static void showUsage(final Options options) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("HttpBenchmark [options] [http://]hostname[:port]/path", options); } static void printError(String msg) { System.err.println(msg); showUsage(getOptions()); System.exit(-1); } }