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.CoordJobUpdateJPAExecutor;
028import org.apache.oozie.executor.jpa.JPAExecutorException;
029import org.apache.oozie.service.JPAService;
030import org.apache.oozie.service.Services;
031import org.apache.oozie.util.LogUtils;
032
033public class CoordPauseXCommand extends PauseTransitionXCommand {
034    private final JPAService jpaService = Services.get().get(JPAService.class);
035    private final CoordinatorJobBean coordJob;
036    private CoordinatorJob.Status prevStatus = null;
037
038    public CoordPauseXCommand(CoordinatorJobBean coordJob) {
039        super("coord_pause", "coord_pause", 1);
040        this.coordJob = coordJob;
041    }
042
043    /* (non-Javadoc)
044     * @see org.apache.oozie.command.XCommand#getEntityKey()
045     */
046    @Override
047    public String getEntityKey() {
048        return coordJob.getId();
049    }
050
051    /* (non-Javadoc)
052     * @see org.apache.oozie.command.XCommand#isLockRequired()
053     */
054    @Override
055    protected boolean isLockRequired() {
056        return true;
057    }
058
059    /* (non-Javadoc)
060     * @see org.apache.oozie.command.XCommand#loadState()
061     */
062    @Override
063    public void loadState() throws CommandException {
064        prevStatus = coordJob.getStatus();
065        LogUtils.setLogInfo(coordJob, logInfo);
066    }
067
068    /* (non-Javadoc)
069     * @see org.apache.oozie.command.XCommand#verifyPrecondition()
070     */
071    @Override
072    protected void verifyPrecondition() throws CommandException, PreconditionException {
073    }
074
075    /* (non-Javadoc)
076     * @see org.apache.oozie.command.TransitionXCommand#notifyParent()
077     */
078    @Override
079    public void notifyParent() throws CommandException {
080        // update bundle action
081        if (coordJob.getBundleId() != null) {
082            BundleStatusUpdateXCommand bundleStatusUpdate = new BundleStatusUpdateXCommand(coordJob, prevStatus);
083            bundleStatusUpdate.call();
084        }
085    }
086
087    /* (non-Javadoc)
088     * @see org.apache.oozie.command.TransitionXCommand#getJob()
089     */
090    @Override
091    public Job getJob() {
092        return coordJob;
093    }
094
095    /* (non-Javadoc)
096     * @see org.apache.oozie.command.TransitionXCommand#updateJob()
097     */
098    @Override
099    public void updateJob() throws CommandException {
100        try {
101            jpaService.execute(new CoordJobUpdateJPAExecutor(coordJob));
102        }
103        catch (JPAExecutorException e) {
104            throw new CommandException(e);
105        }
106    }
107
108    @Override
109    public void pauseChildren() throws CommandException {
110        // TODO - need revisit when revisiting coord job status redesign;
111
112    }
113
114    @Override
115    public void performWrites() throws CommandException {
116    }
117
118}