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
019package org.apache.oozie.command.coord;
020
021import java.util.List;
022import java.util.Map;
023
024import org.apache.oozie.ErrorCode;
025import org.apache.oozie.SLAEventBean;
026import org.apache.oozie.XException;
027import org.apache.oozie.command.CommandException;
028import org.apache.oozie.command.PreconditionException;
029import org.apache.oozie.command.XCommand;
030import org.apache.oozie.executor.jpa.SLAEventsGetForFilterJPAExecutor;
031import org.apache.oozie.service.JPAService;
032import org.apache.oozie.service.Service;
033import org.apache.oozie.service.Services;
034
035/**
036 * The command to get a list of SLAEvents which are greater than given seqId.
037 *
038 */
039@SuppressWarnings("deprecation")
040public class SLAEventsXCommand extends XCommand<List<SLAEventBean>> {
041
042    private long seqId = 0;
043    private int maxNoEvents = 100; // Default
044    private long lastSeqId = -1;
045    private final Map<String, List<String>> filter;
046
047    public static final String SLA_DEFAULT_MAXEVENTS = Service.CONF_PREFIX + "sla.default.maxevents";
048
049    public SLAEventsXCommand(long seqId, int maxNoEvnts, Map<String, List<String>> filter) {
050        super("SLAEventsXCommand", "SLAEventsXCommand", 1);
051        this.seqId = seqId;
052        int sysMax = Services.get().getConf().getInt(SLA_DEFAULT_MAXEVENTS, 1000);
053        this.maxNoEvents = maxNoEvnts > sysMax ? sysMax : maxNoEvnts;
054        this.filter = filter;
055    }
056
057    @Override
058    protected boolean isLockRequired() {
059        return false;
060    }
061
062    @Override
063    public String getEntityKey() {
064        return Long.toString(seqId);
065    }
066
067    @Override
068    protected void loadState() throws CommandException {
069    }
070
071    @Override
072    protected void verifyPrecondition() throws CommandException, PreconditionException {
073    }
074
075    @Override
076    protected List<SLAEventBean> execute() throws CommandException {
077        try {
078            JPAService jpaService = Services.get().get(JPAService.class);
079            List<SLAEventBean> slaEventList = null;
080            long lastSeqId[] = new long[1];
081            if (jpaService != null) {
082                slaEventList = jpaService.execute(new SLAEventsGetForFilterJPAExecutor(seqId, maxNoEvents, filter, lastSeqId));
083            }
084            else {
085                LOG.error(ErrorCode.E0610);
086            }
087            setLastSeqId(lastSeqId[0]);
088            return slaEventList;
089        }
090        catch (XException ex) {
091            throw new CommandException(ex);
092        }
093    }
094
095    /**
096     * Set lastSeqId
097     *
098     * @param lastSeqId
099     */
100    public void setLastSeqId(long lastSeqId) {
101        this.lastSeqId = lastSeqId;
102    }
103
104    /**
105     * Get lastSeqId
106     *
107     * @return lastSeqId
108     */
109    public long getLastSeqId() {
110        return lastSeqId;
111    }
112
113}