nl.b3p.viewer.solr.SolrUpdaterListener.java Source code

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Here is the source code for nl.b3p.viewer.solr.SolrUpdaterListener.java

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/*
 * Copyright (C) 2013 B3Partners B.V.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package nl.b3p.viewer.solr;

import java.util.Properties;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.CronScheduleBuilder;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

/**
 *
 * @author Meine Toonen
 */
public class SolrUpdaterListener implements ServletContextListener {

    private static final String PARAM_SOLR_UPDATE_INTERVAL = "flamingo.solr.schedule";
    private static final Log log = LogFactory.getLog(SolrUpdaterListener.class);
    private ServletContext context;
    private Scheduler scheduler;
    private String interval;

    @Override
    public void contextInitialized(ServletContextEvent sce) {
        init(sce);
        if (interval.equalsIgnoreCase("-1") || interval == null) {
            return;
        }

        Properties props = new Properties();
        props.put("org.quartz.scheduler.instanceName", "MonitoringScheduler");
        props.put("org.quartz.threadPool.threadCount", "1");
        props.put("org.quartz.scheduler.interruptJobsOnShutdownWithWait", "true");
        // Job store for monitoring does not need to be persistent
        props.put("org.quartz.jobStore.class", "org.quartz.simpl.RAMJobStore");
        try {
            scheduler = new StdSchedulerFactory(props).getScheduler();

            scheduler.startDelayed(60);

            JobDetail job = JobBuilder.newJob(SolrUpdateJob.class).withIdentity("SolrUpdateJob", "solrupdategroup")
                    .build();

            log.info("Scheduling indexing job for expression " + interval + " minutes");

            CronScheduleBuilder cronSchedule = CronScheduleBuilder.cronSchedule(interval); //("0 42 10 * * ?");
            Trigger trigger = TriggerBuilder.newTrigger().withIdentity("solrupdatejob", "solrupdategroup")
                    .startNow().withSchedule(cronSchedule).build();

            scheduler.scheduleJob(job, trigger);
        } catch (SchedulerException ex) {
            log.error("Cannot create scheduler. ", ex);
        }
    }

    @Override
    public void contextDestroyed(ServletContextEvent sce) {
        if (scheduler != null) {
            try {
                scheduler.shutdown(true);
            } catch (SchedulerException ex) {
                log.error("Cannot shutdown quartz scheduler. ", ex);
            }
        }
    }

    private void init(ServletContextEvent sce) {
        this.context = sce.getServletContext();

        interval = context.getInitParameter(PARAM_SOLR_UPDATE_INTERVAL);

    }
}