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.coord;
019
020import java.util.List;
021import java.util.Map;
022
023import org.apache.oozie.ErrorCode;
024import org.apache.oozie.SLAEventBean;
025import org.apache.oozie.XException;
026import org.apache.oozie.command.CommandException;
027import org.apache.oozie.command.PreconditionException;
028import org.apache.oozie.command.XCommand;
029import org.apache.oozie.executor.jpa.SLAEventsGetForFilterJPAExecutor;
030import org.apache.oozie.service.JPAService;
031import org.apache.oozie.service.Service;
032import 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")
039public 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}