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 */
018
019package org.apache.oozie.command.coord;
020
021import java.util.Date;
022import java.util.List;
023
024import org.apache.oozie.CoordinatorActionBean;
025import org.apache.oozie.CoordinatorJobBean;
026import org.apache.oozie.ErrorCode;
027import org.apache.oozie.XException;
028import org.apache.oozie.client.CoordinatorJob;
029import org.apache.oozie.client.Job;
030import org.apache.oozie.command.CommandException;
031import org.apache.oozie.command.PreconditionException;
032import org.apache.oozie.command.ResumeTransitionXCommand;
033import org.apache.oozie.command.bundle.BundleStatusUpdateXCommand;
034import org.apache.oozie.command.wf.ResumeXCommand;
035import org.apache.oozie.executor.jpa.BatchQueryExecutor;
036import org.apache.oozie.executor.jpa.BatchQueryExecutor.UpdateEntry;
037import org.apache.oozie.executor.jpa.CoordActionQueryExecutor.CoordActionQuery;
038import org.apache.oozie.executor.jpa.CoordJobGetActionsSuspendedJPAExecutor;
039import org.apache.oozie.executor.jpa.CoordJobGetJPAExecutor;
040import org.apache.oozie.executor.jpa.JPAExecutorException;
041import org.apache.oozie.executor.jpa.CoordJobQueryExecutor.CoordJobQuery;
042import org.apache.oozie.service.EventHandlerService;
043import org.apache.oozie.service.JPAService;
044import org.apache.oozie.service.Services;
045import org.apache.oozie.util.InstrumentUtils;
046import org.apache.oozie.util.LogUtils;
047import org.apache.oozie.util.ParamChecker;
048import org.apache.oozie.util.XLog;
049
050/**
051 * Resume coordinator job and actions.
052 *
053 */
054public class CoordResumeXCommand extends ResumeTransitionXCommand {
055    private final String jobId;
056    private CoordinatorJobBean coordJob = null;
057    private JPAService jpaService = null;
058    private boolean exceptionOccured = false;
059    CoordinatorJob.Status prevStatus;
060
061    public CoordResumeXCommand(String id) {
062        super("coord_resume", "coord_resume", 1);
063        this.jobId = ParamChecker.notEmpty(id, "id");
064    }
065
066    @Override
067    public String getEntityKey() {
068        return jobId;
069    }
070
071    @Override
072    public String getKey() {
073        return getName() + "_" + this.jobId;
074    }
075
076    @Override
077    protected boolean isLockRequired() {
078        return true;
079    }
080
081    @Override
082    protected void loadState() throws CommandException {
083        jpaService = Services.get().get(JPAService.class);
084        if (jpaService == null) {
085            throw new CommandException(ErrorCode.E0610);
086        }
087        try {
088            coordJob = jpaService.execute(new CoordJobGetJPAExecutor(jobId));
089        }
090        catch (JPAExecutorException e) {
091            throw new CommandException(e);
092        }
093        setJob(coordJob);
094        prevStatus = coordJob.getStatus();
095        LogUtils.setLogInfo(coordJob);
096    }
097
098    @Override
099    protected void verifyPrecondition() throws CommandException, PreconditionException {
100        if (coordJob.getStatus() != CoordinatorJob.Status.SUSPENDED && coordJob.getStatus() != CoordinatorJob.Status.SUSPENDEDWITHERROR && coordJob.getStatus() != Job.Status.PREPSUSPENDED) {
101            throw new PreconditionException(ErrorCode.E1100, "CoordResumeXCommand not Resumed - "
102                    + "job not in SUSPENDED/SUSPENDEDWITHERROR/PREPSUSPENDED state, job = " + jobId);
103        }
104    }
105
106    @Override
107    public void updateJob() {
108        InstrumentUtils.incrJobCounter(getName(), 1, getInstrumentation());
109        coordJob.setSuspendedTime(null);
110        coordJob.setLastModifiedTime(new Date());
111        LOG.debug("Resume coordinator job id = " + jobId + ", status = " + coordJob.getStatus() + ", pending = "
112                + coordJob.isPending());
113        updateList.add(new UpdateEntry<CoordJobQuery>(CoordJobQuery.UPDATE_COORD_JOB_STATUS_PENDING_TIME, coordJob));
114    }
115
116    @Override
117    public void resumeChildren() throws CommandException {
118        try {
119            // Get all suspended actions to resume them
120            List<CoordinatorActionBean> actionList = jpaService.execute(new CoordJobGetActionsSuspendedJPAExecutor(
121                    jobId));
122
123            for (CoordinatorActionBean action : actionList) {
124                if (action.getExternalId() != null) {
125                    // queue a ResumeXCommand
126                    queue(new ResumeXCommand(action.getExternalId()));
127                    updateCoordAction(action);
128                    LOG.debug(
129                            "Resume coord action = [{0}], new status = [{1}], pending = [{2}] and queue ResumeXCommand for [{3}]",
130                            action.getId(), action.getStatus(), action.getPending(), action.getExternalId());
131                }
132                else {
133                    updateCoordAction(action);
134                    LOG.debug(
135                            "Resume coord action = [{0}], new status = [{1}], pending = [{2}] and external id is null",
136                            action.getId(), action.getStatus(), action.getPending());
137                }
138            }
139
140        }
141        catch (XException ex) {
142            exceptionOccured = true;
143            throw new CommandException(ex);
144        }
145        finally {
146            if (exceptionOccured) {
147                coordJob.setStatus(CoordinatorJob.Status.FAILED);
148                coordJob.resetPending();
149                LOG.warn("Resume children failed so fail coordinator, coordinator job id = " + jobId + ", status = "
150                        + coordJob.getStatus());
151                updateList.add(new UpdateEntry<CoordJobQuery>(CoordJobQuery.UPDATE_COORD_JOB_STATUS_PENDING_TIME,
152                        coordJob));
153            }
154        }
155    }
156
157    @Override
158    public void notifyParent() throws CommandException {
159        // update bundle action
160        if (this.coordJob.getBundleId() != null) {
161            BundleStatusUpdateXCommand bundleStatusUpdate = new BundleStatusUpdateXCommand(coordJob, prevStatus);
162            bundleStatusUpdate.call();
163        }
164    }
165
166    @Override
167    public void performWrites() throws CommandException {
168        try {
169            BatchQueryExecutor.getInstance().executeBatchInsertUpdateDelete(null, updateList, null);
170            if (EventHandlerService.isEnabled()) {
171                // good enough to set event start time as coord's last modified time
172                // updated when set to running
173                generateEvents(coordJob, coordJob.getLastModifiedTime());
174            }
175        }
176        catch (JPAExecutorException e) {
177            throw new CommandException(e);
178        }
179    }
180
181    private void updateCoordAction(CoordinatorActionBean action) {
182        action.setStatus(CoordinatorActionBean.Status.RUNNING);
183        action.incrementAndGetPending();
184        action.setLastModifiedTime(new Date());
185        updateList.add(new UpdateEntry<CoordActionQuery>(CoordActionQuery.UPDATE_COORD_ACTION_STATUS_PENDING_TIME, action));
186    }
187
188    @Override
189    public Job getJob() {
190        return coordJob;
191    }
192}