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.Collections;
021 import java.util.List;
022
023 import org.apache.oozie.CoordinatorActionBean;
024 import org.apache.oozie.CoordinatorJobBean;
025 import org.apache.oozie.ErrorCode;
026 import org.apache.oozie.XException;
027 import org.apache.oozie.command.CommandException;
028 import org.apache.oozie.command.PreconditionException;
029 import org.apache.oozie.executor.jpa.CoordJobGetActionsSubsetJPAExecutor;
030 import org.apache.oozie.executor.jpa.CoordJobGetJPAExecutor;
031 import org.apache.oozie.service.JPAService;
032 import org.apache.oozie.service.Services;
033 import org.apache.oozie.util.ParamChecker;
034
035 /**
036 * Command for loading a coordinator job information
037 */
038 public class CoordJobXCommand extends CoordinatorXCommand<CoordinatorJobBean> {
039 private final String id;
040 private final boolean getActionInfo;
041 private int start = 1;
042 private int len = Integer.MAX_VALUE;
043 private List<String> filterList;
044
045 /**
046 * Constructor for loading a coordinator job information
047 *
048 * @param id coord jobId
049 */
050 public CoordJobXCommand(String id) {
051 this(id, Collections.<String>emptyList(), 1, Integer.MAX_VALUE);
052 }
053
054 /**
055 * Constructor for loading a coordinator job information
056 *
057 * @param id coord jobId
058 * @param start starting index in the list of actions belonging to the job
059 * @param length number of actions to be returned
060 */
061 public CoordJobXCommand(String id, List<String> filterList, int start, int length) {
062 super("job.info", "job.info", 1);
063 this.id = ParamChecker.notEmpty(id, "id");
064 this.getActionInfo = true;
065 this.filterList = filterList;
066 this.start = start;
067 this.len = length;
068 }
069
070 /**
071 * Constructor for loading a coordinator job information
072 *
073 * @param id coord jobId
074 * @param getActionInfo false to ignore loading actions for the job
075 */
076 public CoordJobXCommand(String id, boolean getActionInfo) {
077 super("job.info", "job.info", 1);
078 this.id = ParamChecker.notEmpty(id, "id");
079 this.getActionInfo = getActionInfo;
080 }
081
082 /* (non-Javadoc)
083 * @see org.apache.oozie.command.XCommand#isLockRequired()
084 */
085 @Override
086 protected boolean isLockRequired() {
087 return false;
088 }
089
090 /* (non-Javadoc)
091 * @see org.apache.oozie.command.XCommand#getEntityKey()
092 */
093 @Override
094 public String getEntityKey() {
095 return this.id;
096 }
097
098 /* (non-Javadoc)
099 * @see org.apache.oozie.command.XCommand#loadState()
100 */
101 @Override
102 protected void loadState() throws CommandException {
103 }
104
105 /* (non-Javadoc)
106 * @see org.apache.oozie.command.XCommand#verifyPrecondition()
107 */
108 @Override
109 protected void verifyPrecondition() throws CommandException, PreconditionException {
110 }
111
112 /* (non-Javadoc)
113 * @see org.apache.oozie.command.XCommand#execute()
114 */
115 @Override
116 protected CoordinatorJobBean execute() throws CommandException {
117 try {
118 JPAService jpaService = Services.get().get(JPAService.class);
119 CoordinatorJobBean coordJob = null;
120 if (jpaService != null) {
121 coordJob = jpaService.execute(new CoordJobGetJPAExecutor(id));
122 if (getActionInfo) {
123 List<CoordinatorActionBean> coordActions = jpaService
124 .execute(new CoordJobGetActionsSubsetJPAExecutor(id, filterList, start, len));
125 coordJob.setActions(coordActions);
126 }
127 }
128 else {
129 LOG.error(ErrorCode.E0610);
130 }
131 return coordJob;
132 }
133 catch (XException ex) {
134 throw new CommandException(ex);
135 }
136 }
137
138 }