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.wf;
019
020import org.apache.oozie.ErrorCode;
021import org.apache.oozie.WorkflowJobBean;
022import org.apache.oozie.XException;
023import org.apache.oozie.command.CommandException;
024import org.apache.oozie.command.PreconditionException;
025import org.apache.oozie.executor.jpa.WorkflowJobGetJPAExecutor;
026import org.apache.oozie.service.JPAService;
027import org.apache.oozie.service.Services;
028import org.apache.oozie.util.LogUtils;
029import org.apache.oozie.util.ParamChecker;
030
031public class DefinitionXCommand extends WorkflowXCommand<String> {
032    private String jobId;
033    private WorkflowJobBean wfJob;
034
035    public DefinitionXCommand(String jobId) {
036        super("definition", "definition", 1);
037        this.jobId = ParamChecker.notEmpty(jobId, "jobId");
038    }
039
040    @Override
041    protected boolean isLockRequired() {
042        return false;
043    }
044
045    @Override
046    public String getEntityKey() {
047        return this.jobId;
048    }
049
050    @Override
051    protected void loadState() throws CommandException {
052        try {
053            JPAService jpaService = Services.get().get(JPAService.class);
054
055            if (jpaService != null) {
056                this.wfJob = jpaService.execute(new WorkflowJobGetJPAExecutor(jobId));
057                LogUtils.setLogInfo(wfJob, logInfo);
058            }
059            else {
060                LOG.error(ErrorCode.E0610);
061            }
062        }
063        catch (XException ex) {
064            throw new CommandException(ex);
065        }
066    }
067
068    @Override
069    protected void verifyPrecondition() throws CommandException, PreconditionException {
070    }
071
072    @Override
073    protected String execute() throws CommandException {
074        if (wfJob != null) {
075            return wfJob.getWorkflowInstance().getApp().getDefinition();
076        }
077        else {
078            throw new CommandException(ErrorCode.E0604, "null");
079        }
080    }
081
082}