Java tutorial
/* * 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. */ package org.apache.phoenix.tracingwebapp.http; import java.net.URL; import java.security.ProtectionDomain; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.ToolRunner; import org.apache.log4j.BasicConfigurator; import org.eclipse.jetty.server.Server; import org.eclipse.jetty.webapp.WebAppContext; /** * tracing web app runner */ public final class Main extends Configured implements Tool { protected static final Log LOG = LogFactory.getLog(Main.class); public static final String PHONIX_DBSERVER_PORT_KEY = "phoenix.dbserver.port"; public static final int DEFAULT_DBSERVER_PORT = 2181; public static final String PHONIX_DBSERVER_HOST_KEY = "phoenix.dbserver.host"; public static final String DEFAULT_DBSERVER_HOST = "localhost"; public static final String TRACE_SERVER_HTTP_PORT_KEY = "phoenix.traceserver.http.port"; public static final int DEFAULT_HTTP_PORT = 8864; public static final String TRACE_SERVER_HTTP_JETTY_HOME_KEY = "phoenix.traceserver.http.home"; public static final String DEFAULT_HTTP_HOME = "/"; public static void main(String[] args) throws Exception { int ret = ToolRunner.run(HBaseConfiguration.create(), new Main(), args); System.exit(ret); } @Override public int run(String[] arg0) throws Exception { // logProcessInfo(getConf()); final int port = getConf().getInt(TRACE_SERVER_HTTP_PORT_KEY, DEFAULT_HTTP_PORT); BasicConfigurator.configure(); final String home = getConf().get(TRACE_SERVER_HTTP_JETTY_HOME_KEY, DEFAULT_HTTP_HOME); //setting up the embedded server ProtectionDomain domain = Main.class.getProtectionDomain(); URL location = domain.getCodeSource().getLocation(); String webappDirLocation = location.toString().split("target")[0] + "src/main/webapp"; Server server = new Server(port); WebAppContext root = new WebAppContext(); root.setContextPath(home); root.setDescriptor(webappDirLocation + "/WEB-INF/web.xml"); root.setResourceBase(webappDirLocation); root.setParentLoaderPriority(true); server.setHandler(root); server.start(); server.join(); return 0; } }