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.wf;
020
021import org.apache.oozie.ErrorCode;
022import org.apache.oozie.WorkflowJobBean;
023import org.apache.oozie.XException;
024import org.apache.oozie.command.CommandException;
025import org.apache.oozie.command.PreconditionException;
026import org.apache.oozie.executor.jpa.WorkflowJobQueryExecutor;
027import org.apache.oozie.executor.jpa.WorkflowJobQueryExecutor.WorkflowJobQuery;
028import org.apache.oozie.service.JPAService;
029import org.apache.oozie.service.Services;
030import org.apache.oozie.util.LogUtils;
031import org.apache.oozie.util.ParamChecker;
032
033public class DefinitionXCommand extends WorkflowXCommand<String> {
034    private String jobId;
035    private WorkflowJobBean wfJob;
036
037    public DefinitionXCommand(String jobId) {
038        super("definition", "definition", 1);
039        this.jobId = ParamChecker.notEmpty(jobId, "jobId");
040    }
041
042    @Override
043    protected void setLogInfo() {
044        LogUtils.setLogInfo(jobId);
045    }
046
047    @Override
048    protected boolean isLockRequired() {
049        return false;
050    }
051
052    @Override
053    public String getEntityKey() {
054        return this.jobId;
055    }
056
057    @Override
058    protected void loadState() throws CommandException {
059        try {
060            JPAService jpaService = Services.get().get(JPAService.class);
061
062            if (jpaService != null) {
063                this.wfJob = WorkflowJobQueryExecutor.getInstance().get(WorkflowJobQuery.GET_WORKFLOW_DEFINITION, jobId);
064                LogUtils.setLogInfo(wfJob);
065            }
066            else {
067                LOG.error(ErrorCode.E0610);
068            }
069        }
070        catch (XException ex) {
071            throw new CommandException(ex);
072        }
073    }
074
075    @Override
076    protected void verifyPrecondition() throws CommandException, PreconditionException {
077    }
078
079    @Override
080    protected String execute() throws CommandException {
081        if (wfJob != null) {
082            return wfJob.getWorkflowInstance().getApp().getDefinition();
083        }
084        else {
085            throw new CommandException(ErrorCode.E0604, "null");
086        }
087    }
088
089}