content: /**
   * 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 com.alibaba.jstorm.task;
  
  public class TaskStatus {
      // task is alive, and it will run BaseExecutor's run
      public static final byte RUN = 0;
      // task is alive, but it won't run BaseExecutor's run
      public static final byte PAUSE = 1;
      // task is shutdown
      public static final byte SHUTDOWN = 2;
      // task is init
      public static final byte INIT = 3;
  
      public static final byte UPGRADING = 4;
  
      private volatile byte status = TaskStatus.INIT;
  
      public byte getStatus() {
          return status;
      }
  
      public void setStatus(byte status) {
          this.status = status;
      }
  
      public boolean isRun() {
          return status == TaskStatus.RUN;
      }
  
      public boolean isShutdown() {
          return status == TaskStatus.SHUTDOWN;
      }
  
      public boolean isPause() {
          return status == TaskStatus.PAUSE;
      }
  
      public boolean isInit() {
          return status == TaskStatus.INIT;
      }
  
      public boolean isUpgrading() {
          return status == TaskStatus.UPGRADING;
      }
  
      @Override
      public String toString() {
          return String.valueOf(status);
      }
  }
  