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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 java.util.List;
021
022 import org.apache.oozie.CoordinatorActionBean;
023 import org.apache.oozie.CoordinatorJobBean;
024 import org.apache.oozie.ErrorCode;
025 import org.apache.oozie.XException;
026 import org.apache.oozie.command.CommandException;
027 import org.apache.oozie.command.PreconditionException;
028 import org.apache.oozie.executor.jpa.CoordActionsSubsetGetForJobJPAExecutor;
029 import org.apache.oozie.executor.jpa.CoordJobGetJPAExecutor;
030 import org.apache.oozie.service.JPAService;
031 import org.apache.oozie.service.Services;
032 import org.apache.oozie.util.ParamChecker;
033
034 /**
035 * Command for loading a coordinator job information
036 */
037 public class CoordJobXCommand extends CoordinatorXCommand<CoordinatorJobBean> {
038 private final String id;
039 private final boolean getActionInfo;
040 private int start = 1;
041 private int len = Integer.MAX_VALUE;
042
043 /**
044 * Constructor for loading a coordinator job information
045 *
046 * @param id coord jobId
047 */
048 public CoordJobXCommand(String id) {
049 this(id, 1, Integer.MAX_VALUE);
050 }
051
052 /**
053 * Constructor for loading a coordinator job information
054 *
055 * @param id coord jobId
056 * @param start starting index in the list of actions belonging to the job
057 * @param length number of actions to be returned
058 */
059 public CoordJobXCommand(String id, int start, int length) {
060 super("job.info", "job.info", 1);
061 this.id = ParamChecker.notEmpty(id, "id");
062 this.getActionInfo = true;
063 this.start = start;
064 this.len = length;
065 }
066
067 /**
068 * Constructor for loading a coordinator job information
069 *
070 * @param id coord jobId
071 * @param getActionInfo false to ignore loading actions for the job
072 */
073 public CoordJobXCommand(String id, boolean getActionInfo) {
074 super("job.info", "job.info", 1);
075 this.id = ParamChecker.notEmpty(id, "id");
076 this.getActionInfo = getActionInfo;
077 }
078
079 /* (non-Javadoc)
080 * @see org.apache.oozie.command.XCommand#isLockRequired()
081 */
082 @Override
083 protected boolean isLockRequired() {
084 return false;
085 }
086
087 /* (non-Javadoc)
088 * @see org.apache.oozie.command.XCommand#getEntityKey()
089 */
090 @Override
091 protected String getEntityKey() {
092 return this.id;
093 }
094
095 /* (non-Javadoc)
096 * @see org.apache.oozie.command.XCommand#loadState()
097 */
098 @Override
099 protected void loadState() throws CommandException {
100 }
101
102 /* (non-Javadoc)
103 * @see org.apache.oozie.command.XCommand#verifyPrecondition()
104 */
105 @Override
106 protected void verifyPrecondition() throws CommandException, PreconditionException {
107 }
108
109 /* (non-Javadoc)
110 * @see org.apache.oozie.command.XCommand#execute()
111 */
112 @Override
113 protected CoordinatorJobBean execute() throws CommandException {
114 try {
115 JPAService jpaService = Services.get().get(JPAService.class);
116 CoordinatorJobBean coordJob = null;
117 if (jpaService != null) {
118 coordJob = jpaService.execute(new CoordJobGetJPAExecutor(id));
119 if (getActionInfo) {
120 List<CoordinatorActionBean> coordActions = jpaService
121 .execute(new CoordActionsSubsetGetForJobJPAExecutor(id, start, len));
122 coordJob.setActions(coordActions);
123 }
124 }
125 else {
126 LOG.error(ErrorCode.E0610);
127 }
128 return coordJob;
129 }
130 catch (XException ex) {
131 throw new CommandException(ex);
132 }
133 }
134
135 }