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 import java.util.Map;
022
023 import org.apache.oozie.ErrorCode;
024 import org.apache.oozie.SLAEventBean;
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.command.XCommand;
029 import org.apache.oozie.executor.jpa.SLAEventsGetForFilterJPAExecutor;
030 import org.apache.oozie.service.JPAService;
031 import org.apache.oozie.service.Service;
032 import org.apache.oozie.service.Services;
033
034 /**
035 * The command to get a list of SLAEvents which are greater than given seqId.
036 *
037 */
038 public class SLAEventsXCommand extends XCommand<List<SLAEventBean>> {
039
040 private long seqId = 0;
041 private int maxNoEvents = 100; // Default
042 private long lastSeqId = -1;
043 private final Map<String, List<String>> filter;
044
045 public static final String SLA_DEFAULT_MAXEVENTS = Service.CONF_PREFIX + "sla.default.maxevents";
046
047 public SLAEventsXCommand(long seqId, int maxNoEvnts, Map<String, List<String>> filter) {
048 super("SLAEventsXCommand", "SLAEventsXCommand", 1);
049 this.seqId = seqId;
050 int sysMax = Services.get().getConf().getInt(SLA_DEFAULT_MAXEVENTS, 1000);
051 this.maxNoEvents = maxNoEvnts > sysMax ? sysMax : maxNoEvnts;
052 this.filter = filter;
053 }
054
055 @Override
056 protected boolean isLockRequired() {
057 return false;
058 }
059
060 @Override
061 public String getEntityKey() {
062 return Long.toString(seqId);
063 }
064
065 @Override
066 protected void loadState() throws CommandException {
067 }
068
069 @Override
070 protected void verifyPrecondition() throws CommandException, PreconditionException {
071 }
072
073 @Override
074 protected List<SLAEventBean> execute() throws CommandException {
075 try {
076 JPAService jpaService = Services.get().get(JPAService.class);
077 List<SLAEventBean> slaEventList = null;
078 long lastSeqId[] = new long[1];
079 if (jpaService != null) {
080 slaEventList = jpaService.execute(new SLAEventsGetForFilterJPAExecutor(seqId, maxNoEvents, filter, lastSeqId));
081 }
082 else {
083 LOG.error(ErrorCode.E0610);
084 }
085 setLastSeqId(lastSeqId[0]);
086 return slaEventList;
087 }
088 catch (XException ex) {
089 throw new CommandException(ex);
090 }
091 }
092
093 /**
094 * Set lastSeqId
095 *
096 * @param lastSeqId
097 */
098 public void setLastSeqId(long lastSeqId) {
099 this.lastSeqId = lastSeqId;
100 }
101
102 /**
103 * Get lastSeqId
104 *
105 * @return lastSeqId
106 */
107 public long getLastSeqId() {
108 return lastSeqId;
109 }
110
111 }