001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 * 
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 * 
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.oozie.command.coord;
019
020import org.apache.oozie.CoordinatorJobBean;
021import org.apache.oozie.client.CoordinatorJob;
022import org.apache.oozie.client.Job;
023import org.apache.oozie.command.CommandException;
024import org.apache.oozie.command.PauseTransitionXCommand;
025import org.apache.oozie.command.PreconditionException;
026import org.apache.oozie.command.bundle.BundleStatusUpdateXCommand;
027import org.apache.oozie.executor.jpa.CoordJobQueryExecutor;
028import org.apache.oozie.executor.jpa.CoordJobQueryExecutor.CoordJobQuery;
029import org.apache.oozie.executor.jpa.JPAExecutorException;
030import org.apache.oozie.util.LogUtils;
031
032public class CoordPauseXCommand extends PauseTransitionXCommand {
033    private final CoordinatorJobBean coordJob;
034    private CoordinatorJob.Status prevStatus = null;
035
036    public CoordPauseXCommand(CoordinatorJobBean coordJob) {
037        super("coord_pause", "coord_pause", 1);
038        this.coordJob = coordJob;
039    }
040
041    /* (non-Javadoc)
042     * @see org.apache.oozie.command.XCommand#getEntityKey()
043     */
044    @Override
045    public String getEntityKey() {
046        return coordJob.getId();
047    }
048
049    /* (non-Javadoc)
050     * @see org.apache.oozie.command.XCommand#isLockRequired()
051     */
052    @Override
053    protected boolean isLockRequired() {
054        return true;
055    }
056
057    /* (non-Javadoc)
058     * @see org.apache.oozie.command.XCommand#loadState()
059     */
060    @Override
061    public void loadState() throws CommandException {
062        prevStatus = coordJob.getStatus();
063        LogUtils.setLogInfo(coordJob, logInfo);
064    }
065
066    /* (non-Javadoc)
067     * @see org.apache.oozie.command.XCommand#verifyPrecondition()
068     */
069    @Override
070    protected void verifyPrecondition() throws CommandException, PreconditionException {
071    }
072
073    /* (non-Javadoc)
074     * @see org.apache.oozie.command.TransitionXCommand#notifyParent()
075     */
076    @Override
077    public void notifyParent() throws CommandException {
078        // update bundle action
079        if (coordJob.getBundleId() != null) {
080            BundleStatusUpdateXCommand bundleStatusUpdate = new BundleStatusUpdateXCommand(coordJob, prevStatus);
081            bundleStatusUpdate.call();
082        }
083    }
084
085    /* (non-Javadoc)
086     * @see org.apache.oozie.command.TransitionXCommand#getJob()
087     */
088    @Override
089    public Job getJob() {
090        return coordJob;
091    }
092
093    /* (non-Javadoc)
094     * @see org.apache.oozie.command.TransitionXCommand#updateJob()
095     */
096    @Override
097    public void updateJob() throws CommandException {
098        try {
099            CoordJobQueryExecutor.getInstance().executeUpdate(CoordJobQuery.UPDATE_COORD_JOB_STATUS, coordJob);
100        }
101        catch (JPAExecutorException e) {
102            throw new CommandException(e);
103        }
104    }
105
106    @Override
107    public void pauseChildren() throws CommandException {
108        // TODO - need revisit when revisiting coord job status redesign;
109
110    }
111
112    @Override
113    public void performWrites() throws CommandException {
114    }
115
116}