hadoop ApplicationEntity 源码
haddop ApplicationEntity 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/timelineservice/ApplicationEntity.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.api.records.timelineservice;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* This entity represents an application.
*/
@InterfaceAudience.Public
@InterfaceStability.Unstable
public class ApplicationEntity extends HierarchicalTimelineEntity {
public static final String QUEUE_INFO_KEY =
TimelineEntity.SYSTEM_INFO_KEY_PREFIX + "QUEUE";
public ApplicationEntity() {
super(TimelineEntityType.YARN_APPLICATION.toString());
}
public ApplicationEntity(TimelineEntity entity) {
super(entity);
if (!entity.getType().equals(
TimelineEntityType.YARN_APPLICATION.toString())) {
throw new IllegalArgumentException("Incompatible entity type: "
+ getId());
}
}
public String getQueue() {
return getInfo().get(QUEUE_INFO_KEY).toString();
}
public void setQueue(String queue) {
addInfo(QUEUE_INFO_KEY, queue);
}
/**
* Checks if the input TimelineEntity object is an ApplicationEntity.
*
* @param te TimelineEntity object.
* @return true if input is an ApplicationEntity, false otherwise
*/
public static boolean isApplicationEntity(TimelineEntity te) {
return (te == null ? false
: te.getType().equals(TimelineEntityType.YARN_APPLICATION.toString()));
}
/**
* @param te TimelineEntity object.
* @param eventId event with this id needs to be fetched
* @return TimelineEvent if TimelineEntity contains the desired event.
*/
public static TimelineEvent getApplicationEvent(TimelineEntity te,
String eventId) {
if (isApplicationEntity(te)) {
for (TimelineEvent event : te.getEvents()) {
if (event.getId().equals(eventId)) {
return event;
}
}
}
return null;
}
}
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