hadoop ApplicationInitializationContext 源码
haddop ApplicationInitializationContext 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/server/api/ApplicationInitializationContext.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.api;
import java.nio.ByteBuffer;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Evolving;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.ContainerManagementProtocol;
import org.apache.hadoop.yarn.api.protocolrecords.StartContainersRequest;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
/**
* Initialization context for {@link AuxiliaryService} when starting an
* application.
*/
@Public
@Evolving
public class ApplicationInitializationContext {
private final String user;
private final ApplicationId applicationId;
private ByteBuffer appDataForService;
@Private
@Unstable
public ApplicationInitializationContext(String user, ApplicationId applicationId,
ByteBuffer appDataForService) {
this.user = user;
this.applicationId = applicationId;
this.appDataForService = appDataForService;
}
/**
* Get the user-name of the application-submitter
*
* @return user-name
*/
public String getUser() {
return this.user;
}
/**
* Get {@link ApplicationId} of the application
*
* @return applications ID
*/
public ApplicationId getApplicationId() {
return this.applicationId;
}
/**
* Get the data sent to the NodeManager via
* {@link ContainerManagementProtocol#startContainers(StartContainersRequest)}
* as part of {@link ContainerLaunchContext#getServiceData()}
*
* @return the servicesData for this application.
*/
public ByteBuffer getApplicationDataForService() {
return this.appDataForService;
}
}
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