hadoop ServiceContext 源码
haddop ServiceContext 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/ServiceContext.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.service;
import org.apache.hadoop.util.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.cache.LoadingCache;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.security.client.ClientToAMTokenSecretManager;
import org.apache.hadoop.yarn.service.api.records.Service;
import org.apache.hadoop.yarn.service.api.records.ConfigFile;
import org.apache.hadoop.yarn.service.utils.SliderFileSystem;
import java.nio.ByteBuffer;
public class ServiceContext {
public Service service = null;
public SliderFileSystem fs;
public String serviceHdfsDir = "";
public ApplicationAttemptId attemptId;
public LoadingCache<ConfigFile, Object> configCache;
public ServiceScheduler scheduler;
public ClientToAMTokenSecretManager secretManager;
public ClientAMService clientAMService;
// tokens used for container launch
public ByteBuffer tokens;
// AM keytab principal
public String principal;
// AM keytab location
public String keytab;
private ServiceManager serviceManager;
public ServiceContext() {
}
public ServiceManager getServiceManager() {
return serviceManager;
}
void setServiceManager(ServiceManager serviceManager) {
this.serviceManager = Preconditions.checkNotNull(serviceManager);
}
public Service getService() {
return service;
}
}
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