| /** |
| * 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 org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.http.HttpServer; |
| import org.apache.hadoop.security.authorize.AccessControlList; |
| import org.apache.hadoop.util.StringUtils; |
| import org.apache.hadoop.yarn.YarnException; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.service.AbstractService; |
| |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| |
| public class WebAppProxy extends AbstractService { |
| public static final String FETCHER_ATTRIBUTE= "AppUrlFetcher"; |
| public static final String IS_SECURITY_ENABLED_ATTRIBUTE = "IsSecurityEnabled"; |
| public static final String PROXY_HOST_ATTRIBUTE = "proxyHost"; |
| private static final Log LOG = LogFactory.getLog(WebAppProxy.class); |
| |
| private HttpServer proxyServer = null; |
| private String bindAddress = null; |
| private int port = 0; |
| private AccessControlList acl = null; |
| private AppReportFetcher fetcher = null; |
| private boolean isSecurityEnabled = false; |
| private String proxyHost = null; |
| |
| public WebAppProxy() { |
| super(WebAppProxy.class.getName()); |
| } |
| |
| @Override |
| public void init(Configuration conf) { |
| String auth = conf.get(CommonConfigurationKeys.HADOOP_SECURITY_AUTHENTICATION); |
| if (auth == null || "simple".equals(auth)) { |
| isSecurityEnabled = false; |
| } else if ("kerberos".equals(auth)) { |
| isSecurityEnabled = true; |
| } else { |
| LOG.warn("Unrecongized attribute value for " + |
| CommonConfigurationKeys.HADOOP_SECURITY_AUTHENTICATION + |
| " of " + auth); |
| } |
| String proxy = YarnConfiguration.getProxyHostAndPort(conf); |
| String[] proxyParts = proxy.split(":"); |
| proxyHost = proxyParts[0]; |
| |
| fetcher = new AppReportFetcher(conf); |
| bindAddress = conf.get(YarnConfiguration.PROXY_ADDRESS); |
| if(bindAddress == null || bindAddress.isEmpty()) { |
| throw new YarnException(YarnConfiguration.PROXY_ADDRESS + |
| " is not set so the proxy will not run."); |
| } |
| LOG.info("Instantiating Proxy at " + bindAddress); |
| String[] parts = StringUtils.split(bindAddress, ':'); |
| port = 0; |
| if (parts.length == 2) { |
| bindAddress = parts[0]; |
| port = Integer.parseInt(parts[1]); |
| } |
| acl = new AccessControlList(conf.get(YarnConfiguration.YARN_ADMIN_ACL, |
| YarnConfiguration.DEFAULT_YARN_ADMIN_ACL)); |
| super.init(conf); |
| } |
| |
| @Override |
| public void start() { |
| try { |
| proxyServer = new HttpServer("proxy", bindAddress, port, |
| port == 0, getConfig(), acl); |
| proxyServer.addServlet(ProxyUriUtils.PROXY_SERVLET_NAME, |
| ProxyUriUtils.PROXY_PATH_SPEC, WebAppProxyServlet.class); |
| proxyServer.setAttribute(FETCHER_ATTRIBUTE, fetcher); |
| proxyServer.setAttribute(IS_SECURITY_ENABLED_ATTRIBUTE, isSecurityEnabled); |
| proxyServer.setAttribute(PROXY_HOST_ATTRIBUTE, proxyHost); |
| proxyServer.start(); |
| } catch (IOException e) { |
| LOG.fatal("Could not start proxy web server",e); |
| throw new YarnException("Could not start proxy web server",e); |
| } |
| super.start(); |
| } |
| |
| @Override |
| public void stop() { |
| if(proxyServer != null) { |
| try { |
| proxyServer.stop(); |
| } catch (Exception e) { |
| LOG.fatal("Error stopping proxy web server", e); |
| throw new YarnException("Error stopping proxy web server",e); |
| } |
| } |
| super.stop(); |
| } |
| |
| public void join() { |
| if(proxyServer != null) { |
| try { |
| proxyServer.join(); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| } |