hadoop AHSLogsPage 源码
haddop AHSLogsPage 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/webapp/AHSLogsPage.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.yarn.server.applicationhistoryservice.webapp;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.CONTAINER_ID;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.ENTITY_STRING;
import org.apache.hadoop.yarn.webapp.SubView;
import org.apache.hadoop.yarn.webapp.log.AggregatedLogsBlock;
public class AHSLogsPage extends AHSView {
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.yarn.server.applicationhistoryservice.webapp.AHSView#
* preHead(org.apache.hadoop .yarn.webapp.hamlet.Hamlet.HTML)
*/
@Override
protected void preHead(Page.HTML<__> html) {
String logEntity = $(ENTITY_STRING);
if (logEntity == null || logEntity.isEmpty()) {
logEntity = $(CONTAINER_ID);
}
if (logEntity == null || logEntity.isEmpty()) {
logEntity = "UNKNOWN";
}
commonPreHead(html);
}
/**
* The content of this page is the AggregatedLogsBlock
*
* @return AggregatedLogsBlock.class
*/
@Override
protected Class<? extends SubView> content() {
return AggregatedLogsBlock.class;
}
}
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