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 @SuppressWarnings("deprecation")
039 public class SLAEventsXCommand extends XCommand<List<SLAEventBean>> {
040
041 private long seqId = 0;
042 private int maxNoEvents = 100; // Default
043 private long lastSeqId = -1;
044 private final Map<String, List<String>> filter;
045
046 public static final String SLA_DEFAULT_MAXEVENTS = Service.CONF_PREFIX + "sla.default.maxevents";
047
048 public SLAEventsXCommand(long seqId, int maxNoEvnts, Map<String, List<String>> filter) {
049 super("SLAEventsXCommand", "SLAEventsXCommand", 1);
050 this.seqId = seqId;
051 int sysMax = Services.get().getConf().getInt(SLA_DEFAULT_MAXEVENTS, 1000);
052 this.maxNoEvents = maxNoEvnts > sysMax ? sysMax : maxNoEvnts;
053 this.filter = filter;
054 }
055
056 @Override
057 protected boolean isLockRequired() {
058 return false;
059 }
060
061 @Override
062 public String getEntityKey() {
063 return Long.toString(seqId);
064 }
065
066 @Override
067 protected void loadState() throws CommandException {
068 }
069
070 @Override
071 protected void verifyPrecondition() throws CommandException, PreconditionException {
072 }
073
074 @Override
075 protected List<SLAEventBean> execute() throws CommandException {
076 try {
077 JPAService jpaService = Services.get().get(JPAService.class);
078 List<SLAEventBean> slaEventList = null;
079 long lastSeqId[] = new long[1];
080 if (jpaService != null) {
081 slaEventList = jpaService.execute(new SLAEventsGetForFilterJPAExecutor(seqId, maxNoEvents, filter, lastSeqId));
082 }
083 else {
084 LOG.error(ErrorCode.E0610);
085 }
086 setLastSeqId(lastSeqId[0]);
087 return slaEventList;
088 }
089 catch (XException ex) {
090 throw new CommandException(ex);
091 }
092 }
093
094 /**
095 * Set lastSeqId
096 *
097 * @param lastSeqId
098 */
099 public void setLastSeqId(long lastSeqId) {
100 this.lastSeqId = lastSeqId;
101 }
102
103 /**
104 * Get lastSeqId
105 *
106 * @return lastSeqId
107 */
108 public long getLastSeqId() {
109 return lastSeqId;
110 }
111
112 }