| /** |
| * 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.hadoop.yarn.server.webproxy; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.metrics2.source.JvmMetrics; |
| import org.apache.hadoop.security.SecurityUtil; |
| import org.apache.hadoop.service.CompositeService; |
| import org.apache.hadoop.util.ExitUtil; |
| import org.apache.hadoop.util.GenericOptionsParser; |
| import org.apache.hadoop.util.JvmPauseMonitor; |
| import org.apache.hadoop.util.ShutdownHookManager; |
| import org.apache.hadoop.util.StringUtils; |
| import org.apache.hadoop.yarn.YarnUncaughtExceptionHandler; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * ProxyServer will sit in between the end user and AppMaster |
| * web interfaces. |
| */ |
| public class WebAppProxyServer extends CompositeService { |
| |
| /** |
| * Priority of the ResourceManager shutdown hook. |
| */ |
| public static final int SHUTDOWN_HOOK_PRIORITY = 30; |
| |
| private static final Logger LOG = LoggerFactory.getLogger( |
| WebAppProxyServer.class); |
| |
| private WebAppProxy proxy = null; |
| |
| private JvmPauseMonitor pauseMonitor; |
| |
| public WebAppProxyServer() { |
| super(WebAppProxyServer.class.getName()); |
| } |
| |
| @Override |
| protected void serviceInit(Configuration conf) throws Exception { |
| Configuration config = new YarnConfiguration(conf); |
| doSecureLogin(conf); |
| proxy = new WebAppProxy(); |
| addService(proxy); |
| |
| DefaultMetricsSystem.initialize("WebAppProxyServer"); |
| JvmMetrics jm = JvmMetrics.initSingleton("WebAppProxyServer", null); |
| pauseMonitor = new JvmPauseMonitor(); |
| addService(pauseMonitor); |
| jm.setPauseMonitor(pauseMonitor); |
| |
| super.serviceInit(config); |
| } |
| |
| @Override |
| protected void serviceStart() throws Exception { |
| super.serviceStart(); |
| } |
| |
| @Override |
| protected void serviceStop() throws Exception { |
| super.serviceStop(); |
| DefaultMetricsSystem.shutdown(); |
| } |
| |
| /** |
| * Log in as the Kerberose principal designated for the proxy |
| * @param conf the configuration holding this information in it. |
| * @throws IOException on any error. |
| */ |
| protected void doSecureLogin(Configuration conf) throws IOException { |
| InetSocketAddress socAddr = getBindAddress(conf); |
| SecurityUtil.login(conf, YarnConfiguration.PROXY_KEYTAB, |
| YarnConfiguration.PROXY_PRINCIPAL, socAddr.getHostName()); |
| } |
| |
| /** |
| * Retrieve PROXY bind address from configuration |
| * |
| * @param conf |
| * @return InetSocketAddress |
| */ |
| public static InetSocketAddress getBindAddress(Configuration conf) { |
| return conf.getSocketAddr(YarnConfiguration.PROXY_ADDRESS, |
| YarnConfiguration.DEFAULT_PROXY_ADDRESS, |
| YarnConfiguration.DEFAULT_PROXY_PORT); |
| } |
| |
| public static void main(String[] args) { |
| Thread.setDefaultUncaughtExceptionHandler(new YarnUncaughtExceptionHandler()); |
| StringUtils.startupShutdownMessage(WebAppProxyServer.class, args, LOG); |
| try { |
| YarnConfiguration configuration = new YarnConfiguration(); |
| new GenericOptionsParser(configuration, args); |
| WebAppProxyServer proxyServer = startServer(configuration); |
| proxyServer.proxy.join(); |
| } catch (Throwable t) { |
| ExitUtil.terminate(-1, t); |
| } |
| } |
| |
| /** |
| * Start proxy server. |
| * |
| * @return proxy server instance. |
| */ |
| protected static WebAppProxyServer startServer(Configuration configuration) |
| throws Exception { |
| WebAppProxyServer proxy = new WebAppProxyServer(); |
| ShutdownHookManager.get().addShutdownHook( |
| new CompositeServiceShutdownHook(proxy), SHUTDOWN_HOOK_PRIORITY); |
| proxy.init(configuration); |
| proxy.start(); |
| return proxy; |
| } |
| |
| } |