001 /** 002 * Copyright (c) 2010 Yahoo! Inc. All rights reserved. 003 * Licensed under the Apache License, Version 2.0 (the "License"); 004 * you may not use this file except in compliance with the License. 005 * You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. See accompanying LICENSE file. 014 */ 015 package org.apache.oozie.command.wf; 016 017 import org.apache.oozie.ErrorCode; 018 import org.apache.oozie.WorkflowJobBean; 019 import org.apache.oozie.XException; 020 import org.apache.oozie.command.CommandException; 021 import org.apache.oozie.command.PreconditionException; 022 import org.apache.oozie.executor.jpa.WorkflowJobGetJPAExecutor; 023 import org.apache.oozie.service.JPAService; 024 import org.apache.oozie.service.Services; 025 import org.apache.oozie.util.LogUtils; 026 import org.apache.oozie.util.ParamChecker; 027 028 public class DefinitionXCommand extends WorkflowXCommand<String> { 029 private String jobId; 030 private WorkflowJobBean wfJob; 031 032 public DefinitionXCommand(String jobId) { 033 super("definition", "definition", 1); 034 this.jobId = ParamChecker.notEmpty(jobId, "jobId"); 035 } 036 037 @Override 038 protected boolean isLockRequired() { 039 return false; 040 } 041 042 @Override 043 protected String getEntityKey() { 044 return this.jobId; 045 } 046 047 @Override 048 protected void loadState() throws CommandException { 049 try { 050 JPAService jpaService = Services.get().get(JPAService.class); 051 052 if (jpaService != null) { 053 this.wfJob = jpaService.execute(new WorkflowJobGetJPAExecutor(jobId)); 054 LogUtils.setLogInfo(wfJob, logInfo); 055 } 056 else { 057 LOG.error(ErrorCode.E0610); 058 } 059 } 060 catch (XException ex) { 061 throw new CommandException(ex); 062 } 063 } 064 065 @Override 066 protected void verifyPrecondition() throws CommandException, PreconditionException { 067 } 068 069 @Override 070 protected String execute() throws CommandException { 071 if (wfJob != null) { 072 return wfJob.getWorkflowInstance().getApp().getDefinition(); 073 } 074 else { 075 throw new CommandException(ErrorCode.E0604); 076 } 077 } 078 079 }