org.apache.hadoop.mapred.jobcontrol.JobControl.java Source code

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Here is the source code for org.apache.hadoop.mapred.jobcontrol.JobControl.java

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/**
 * 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.mapred.jobcontrol;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob;

@InterfaceAudience.Public
@InterfaceStability.Stable
public class JobControl extends org.apache.hadoop.mapreduce.lib.jobcontrol.JobControl {

    /** 
     * Construct a job control for a group of jobs.
     * @param groupName a name identifying this group
     */
    public JobControl(String groupName) {
        super(groupName);
    }

    static ArrayList<Job> castToJobList(List<ControlledJob> cjobs) {
        ArrayList<Job> ret = new ArrayList<Job>();
        for (ControlledJob job : cjobs) {
            ret.add((Job) job);
        }
        return ret;
    }

    /**
     * @return the jobs in the waiting state
     */
    public ArrayList<Job> getWaitingJobs() {
        return castToJobList(super.getWaitingJobList());
    }

    /**
     * @return the jobs in the running state
     */
    public ArrayList<Job> getRunningJobs() {
        return castToJobList(super.getRunningJobList());
    }

    /**
     * @return the jobs in the ready state
     */
    public ArrayList<Job> getReadyJobs() {
        return castToJobList(super.getReadyJobsList());
    }

    /**
     * @return the jobs in the success state
     */
    public ArrayList<Job> getSuccessfulJobs() {
        return castToJobList(super.getSuccessfulJobList());
    }

    public ArrayList<Job> getFailedJobs() {
        return castToJobList(super.getFailedJobList());
    }

    /**
     * Add a collection of jobs
     * 
     * @param jobs
     */
    public void addJobs(Collection<Job> jobs) {
        for (Job job : jobs) {
            addJob(job);
        }
    }

    /**
     * @return the thread state
     */
    public int getState() {
        ThreadState state = super.getThreadState();
        if (state == ThreadState.RUNNING) {
            return 0;
        }
        if (state == ThreadState.SUSPENDED) {
            return 1;
        }
        if (state == ThreadState.STOPPED) {
            return 2;
        }
        if (state == ThreadState.STOPPING) {
            return 3;
        }
        if (state == ThreadState.READY) {
            return 4;
        }
        return -1;
    }

}