hadoop AboutBlock 源码
haddop AboutBlock 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/AboutBlock.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 com.google.inject.Inject;
import org.apache.hadoop.yarn.api.records.timeline.TimelineAbout;
import org.apache.hadoop.yarn.util.timeline.TimelineUtils;
import org.apache.hadoop.yarn.webapp.View;
import org.apache.hadoop.yarn.webapp.view.HtmlBlock;
import org.apache.hadoop.yarn.webapp.view.InfoBlock;
public class AboutBlock extends HtmlBlock {
@Inject
AboutBlock(View.ViewContext ctx) {
super(ctx);
}
@Override
protected void render(Block html) {
TimelineAbout tsInfo = TimelineUtils.createTimelineAbout(
"Timeline Server - Generic History Service UI");
info("Timeline Server Overview").
__("Timeline Server Version:", tsInfo.getTimelineServiceBuildVersion() +
" on " + tsInfo.getTimelineServiceVersionBuiltOn()).
__("Hadoop Version:", tsInfo.getHadoopBuildVersion() +
" on " + tsInfo.getHadoopVersionBuiltOn());
html.__(InfoBlock.class);
}
}
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