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    package org.apache.oozie.command.coord;
019    
020    import org.apache.oozie.client.CoordinatorJob;
021    import org.apache.oozie.CoordinatorActionBean;
022    import org.apache.oozie.CoordinatorJobBean;
023    import org.apache.oozie.XException;
024    import org.apache.oozie.command.CommandException;
025    import org.apache.oozie.store.CoordinatorStore;
026    import org.apache.oozie.store.StoreException;
027    import org.apache.oozie.util.ParamChecker;
028    import org.apache.oozie.util.XLog;
029    
030    import org.apache.oozie.command.wf.ResumeCommand;
031    
032    import java.util.Date;
033    import java.util.List;
034    
035    public class CoordResumeCommand extends CoordinatorCommand<Void> {
036    
037        private String jobId;
038        private final XLog log = XLog.getLog(getClass());
039    
040        public CoordResumeCommand(String id) {
041            super("coord_resume", "coord_resume", 1, XLog.STD);
042            this.jobId = ParamChecker.notEmpty(id, "id");
043        }
044    
045        protected Void call(CoordinatorStore store) throws StoreException, CommandException {
046            try {
047                // CoordinatorJobBean coordJob = store.getCoordinatorJob(jobId,
048                // false);
049                CoordinatorJobBean coordJob = store.getEntityManager().find(CoordinatorJobBean.class, jobId);
050                setLogInfo(coordJob);
051                if (coordJob.getStatus() == CoordinatorJob.Status.SUSPENDED) {
052                    incrJobCounter(1);
053                    coordJob.setStatus(CoordinatorJob.Status.PREP);
054                    List<CoordinatorActionBean> actionList = store.getActionsForCoordinatorJob(jobId, false);
055                    for (CoordinatorActionBean action : actionList) {
056                        // queue a ResumeCommand
057                        if (action.getExternalId() != null) {
058                            queueCallable(new ResumeCommand(action.getExternalId()));
059                        }
060                    }
061                    store.updateCoordinatorJob(coordJob);
062                }
063                // TODO queueCallable(new NotificationCommand(coordJob));
064                else {
065                    log.info("CoordResumeCommand not Resumed - " + "job not in SUSPENDED state " + jobId);
066                }
067                return null;
068            }
069            catch (XException ex) {
070                throw new CommandException(ex);
071            }
072        }
073    
074        @Override
075        protected Void execute(CoordinatorStore store) throws StoreException, CommandException {
076            log.info("STARTED CoordResumeCommand for jobId=" + jobId);
077            try {
078                if (lock(jobId)) {
079                    call(store);
080                }
081                else {
082                    queueCallable(new CoordResumeCommand(jobId), LOCK_FAILURE_REQUEUE_INTERVAL);
083                    log.warn("CoordResumeCommand lock was not acquired - " + " failed " + jobId + ". Requeing the same.");
084                }
085            }
086            catch (InterruptedException e) {
087                queueCallable(new CoordResumeCommand(jobId), LOCK_FAILURE_REQUEUE_INTERVAL);
088                log.warn("CoordResumeCommand lock acquiring failed " + " with exception " + e.getMessage() + " for job id "
089                        + jobId + ". Requeing the same.");
090            }
091            finally {
092                log.info("ENDED CoordResumeCommand for jobId=" + jobId);
093            }
094            return null;
095        }
096    
097    }