org.jasig.portal.events.aggr.PortalEventSessionPurgerImpl.java Source code

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Here is the source code for org.jasig.portal.events.aggr.PortalEventSessionPurgerImpl.java

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/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License.  You may obtain a
 * copy of the License at the following location:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.jasig.portal.events.aggr;

import org.jasig.portal.concurrency.locking.IClusterLockService;
import org.jasig.portal.events.aggr.IEventAggregatorStatus.ProcessingType;
import org.jasig.portal.events.aggr.dao.IEventAggregationManagementDao;
import org.jasig.portal.events.aggr.session.EventSessionDao;
import org.jasig.portal.jpa.BaseAggrEventsJpaDao.AggrEventsTransactional;
import org.joda.time.DateTime;
import org.joda.time.Period;
import org.joda.time.ReadablePeriod;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

@Service
public class PortalEventSessionPurgerImpl implements PortalEventSessionPurger {
    protected final Logger logger = LoggerFactory.getLogger(getClass());

    private IEventAggregationManagementDao eventAggregationManagementDao;
    private EventSessionDao eventSessionDao;
    private IClusterLockService clusterLockService;

    private ReadablePeriod eventSessionDuration = Period.days(1);

    @Autowired
    public void setEventSessionDao(EventSessionDao eventSessionDao) {
        this.eventSessionDao = eventSessionDao;
    }

    @Autowired
    public void setClusterLockService(IClusterLockService clusterLockService) {
        this.clusterLockService = clusterLockService;
    }

    @Autowired
    public void setEventAggregationManagementDao(IEventAggregationManagementDao eventAggregationManagementDao) {
        this.eventAggregationManagementDao = eventAggregationManagementDao;
    }

    @Value("${org.jasig.portal.events.aggr.session.PortalEventSessionPurgerImpl.eventSessionDuration:P1D}")
    public void setEventSessionDuration(ReadablePeriod eventSessionDuration) {
        this.eventSessionDuration = eventSessionDuration;
    }

    @Override
    @AggrEventsTransactional
    public EventProcessingResult doPurgeEventSessions() {
        if (!this.clusterLockService.isLockOwner(PURGE_EVENT_SESSION_LOCK_NAME)) {
            throw new IllegalStateException("The cluster lock " + PURGE_EVENT_SESSION_LOCK_NAME
                    + " must be owned by the current thread and server");
        }

        final IEventAggregatorStatus eventAggregatorStatus = eventAggregationManagementDao
                .getEventAggregatorStatus(ProcessingType.AGGREGATION, false);
        if (eventAggregatorStatus == null || eventAggregatorStatus.getLastEventDate() == null) {
            return new EventProcessingResult(0, null, null, true);
        }

        final DateTime lastEventDate = eventAggregatorStatus.getLastEventDate();
        final DateTime sessionPurgeDate = lastEventDate.minus(eventSessionDuration);
        final int purgeCount = eventSessionDao.purgeEventSessionsBefore(sessionPurgeDate);

        return new EventProcessingResult(purgeCount, null, sessionPurgeDate, true);
    }
}