content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed 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
   *
   * https://opensource.org/licenses/Apache-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 com.tencent.angel.master.deploy;
  
  import com.tencent.angel.common.Id;
  import org.apache.hadoop.yarn.event.AbstractEvent;
  
  /**
   * Base class for container allocator event.
   */
  public abstract class ContainerAllocatorEvent extends AbstractEvent<ContainerAllocatorEventType> {
    /**
     * the task that the container is allocated to or deallocated from
     */
    private final Id taskId;
  
    /**
     * Create a ContainerAllocatorEvent
     *
     * @param type   event type
     * @param taskId task id
     */
    public ContainerAllocatorEvent(ContainerAllocatorEventType type, Id taskId) {
      super(type);
      this.taskId = taskId;
    }
  
    /**
     * Get task id
     *
     * @return task id
     */
    public Id getTaskId() {
      return taskId;
    }
  
    @Override public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((taskId == null) ? 0 : taskId.hashCode());
      return result;
    }
  
    @Override public boolean equals(Object obj) {
      if (this == obj)
        return true;
      if (obj == null)
        return false;
      if (getClass() != obj.getClass())
        return false;
      ContainerAllocatorEvent other = (ContainerAllocatorEvent) obj;
      if (taskId == null) {
        if (other.taskId != null)
          return false;
      } else if (!taskId.equals(other.taskId))
        return false;
      return true;
    }
  
    @Override public String toString() {
      return "ContainerAllocatorEvent [taskId=" + taskId + "]";
    }
  }
  