/**
 * 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);
    }
}