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