1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package org.apache.hadoop.yarn.server.resourcemanager.webapp; 20 21 import org.apache.hadoop.yarn.api.records.YarnApplicationState; 22 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet; 23 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.DIV; 24 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.LI; 25 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.UL; 26 import org.apache.hadoop.yarn.webapp.view.HtmlBlock; 27 28 public class NavBlock extends HtmlBlock { 29 render(Block html)30 @Override public void render(Block html) { 31 UL<DIV<Hamlet>> mainList = html. 32 div("#nav"). 33 h3("Cluster"). 34 ul(). 35 li().a(url("cluster"), "About")._(). 36 li().a(url("nodes"), "Nodes")._(). 37 li().a(url("nodelabels"), "Node Labels")._(); 38 UL<LI<UL<DIV<Hamlet>>>> subAppsList = mainList. 39 li().a(url("apps"), "Applications"). 40 ul(); 41 subAppsList.li()._(); 42 for (YarnApplicationState state : YarnApplicationState.values()) { 43 subAppsList. 44 li().a(url("apps", state.toString()), state.toString())._(); 45 } 46 subAppsList._()._(); 47 mainList. 48 li().a(url("scheduler"), "Scheduler")._()._(). 49 h3("Tools"). 50 ul(). 51 li().a("/conf", "Configuration")._(). 52 li().a("/logs", "Local logs")._(). 53 li().a("/stacks", "Server stacks")._(). 54 li().a("/jmx?qry=Hadoop:*", "Server metrics")._()._()._(); 55 } 56 } 57