hadoop Container 源码

haddop Container 代码

文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/container/Container.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.nodemanager.containermanager.container;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.LocalizationStatus;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.security.ContainerTokenIdentifier;
import org.apache.hadoop.yarn.server.api.protocolrecords.NMContainerStatus;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceSet;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime.ContainerExecutionException;

import java.util.List;
import java.util.Map;

public interface Container extends EventHandler<ContainerEvent> {

  ContainerId getContainerId();

  /**
   * The timestamp when the container start request is received.
   */
  long getContainerStartTime();

  /**
   * The timestamp when the container is allowed to be launched.
   */
  long getContainerLaunchTime();

  Resource getResource();

  ContainerTokenIdentifier getContainerTokenIdentifier();

  void setContainerTokenIdentifier(ContainerTokenIdentifier token);

  String getUser();
  
  ContainerState getContainerState();

  ContainerLaunchContext getLaunchContext();

  Credentials getCredentials();

  Map<Path,List<String>> getLocalizedResources();

  ContainerStatus cloneAndGetContainerStatus();

  NMContainerStatus getNMContainerStatus();

  boolean isRetryContextSet();

  boolean shouldRetry(int errorCode);

  String getWorkDir();

  void setWorkDir(String workDir);

  String getCsiVolumesRootDir();

  void setCsiVolumesRootDir(String volumesRootDir);

  String getLogDir();

  void setLogDir(String logDir);

  void setIpAndHost(String[] ipAndHost);

  void setExposedPorts(String ports);

  String toString();

  Priority getPriority();

  ResourceSet getResourceSet();

  boolean isRunning();

  void setIsReInitializing(boolean isReInitializing);

  boolean isReInitializing();

  boolean isMarkedForKilling();

  boolean canRollback();

  void commitUpgrade();

  void sendLaunchEvent();

  void sendKillEvent(int exitStatus, String description);

  boolean isRecovering();

  void setContainerRuntimeData(Object containerRuntimeData);

  <T> T getContainerRuntimeData(Class<T> runtimeClazz)
      throws ContainerExecutionException;

  /**
   * Get assigned resource mappings to the container.
   *
   * @return Resource Mappings of the container
   */
  ResourceMappings getResourceMappings();

  void sendPauseEvent(String description);

  /**
   * Verify container is in final states.
   * @return true/false based on container's state
   */
  boolean isContainerInFinalStates();

  /**
   * Get the localization statuses.
   * @return localization statuses.
   */
  List<LocalizationStatus> getLocalizationStatuses();

  /**
   * Vector of localization counters to be passed from NM to application
   * container via environment variable {@code $LOCALIZATION_COUNTERS}. See
   * {@link org.apache.hadoop.yarn.api.ApplicationConstants.Environment#LOCALIZATION_COUNTERS}
   *
   * @return coma-separated counter values
   */
  String localizationCountersAsString();

}

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