hadoop SingleCounterPage 源码
haddop SingleCounterPage 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/SingleCounterPage.java
/**
* 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.mapreduce.v2.app.webapp;
import static org.apache.hadoop.mapreduce.v2.app.webapp.AMParams.TASK_ID;
import static org.apache.hadoop.yarn.webapp.view.JQueryUI.*;
import org.apache.hadoop.yarn.webapp.SubView;
/**
* Render the counters page
*/
public class SingleCounterPage extends AppView {
/*
* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.v2.hs.webapp.HsView#preHead(org.apache.hadoop.yarn.webapp.hamlet.Hamlet.HTML)
*/
@Override protected void preHead(Page.HTML<__> html) {
commonPreHead(html);
String tid = $(TASK_ID);
String activeNav = "3";
if(tid == null || tid.isEmpty()) {
activeNav = "2";
}
set(initID(ACCORDION, "nav"), "{autoHeight:false, active:"+activeNav+"}");
set(DATATABLES_ID, "singleCounter");
set(initID(DATATABLES, "singleCounter"), counterTableInit());
setTableStyles(html, "singleCounter");
}
/**
* @return The end of a javascript map that is the jquery datatable
* configuration for the jobs table. the Jobs table is assumed to be
* rendered by the class returned from {@link #content()}
*/
private String counterTableInit() {
return tableInit().
append(",aoColumnDefs:[").
append("{'sType':'title-numeric', 'aTargets': [ 1 ] }").
append("]}").
toString();
}
/**
* The content of this page is the CountersBlock now.
* @return CountersBlock.class
*/
@Override protected Class<? extends SubView> content() {
return SingleCounterBlock.class;
}
}
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