wamblee.org Git - utils/blob - crawler/kissweb/src/org/wamblee/crawler/kiss/scheduling/quartz/QuartzCrawlerScheduler.java

   1 /*
   2  * Copyright 2006 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.wamblee.crawler.kiss.scheduling.quartz;
  18
  19 import java.util.Date;
  20
  21 import org.quartz.JobDetail;
  22 import org.quartz.Scheduler;
  23 import org.quartz.SchedulerException;
  24 import org.quartz.SchedulerFactory;
  25 import org.quartz.Trigger;
  26 import org.quartz.TriggerUtils;
  27 import org.quartz.impl.StdSchedulerFactory;
  28
  29 /**
  30  * Interface to the Quartz scheduler.
  31  */
  32 public class QuartzCrawlerScheduler {
  33
  34     private Scheduler _scheduler;
  35
  36     private int _intervalInSeconds;
  37
  38     /**
  39      * Constructs the quartz interface.
  40      * @param aIntervalInSeconds Scheduling interval in seconds.
  41      * @throws SchedulerException
  42      */
  43     public QuartzCrawlerScheduler(int aIntervalInSeconds) throws SchedulerException {
  44         SchedulerFactory schedulerFactory = new StdSchedulerFactory();
  45         _scheduler = schedulerFactory.getScheduler();
  46         _intervalInSeconds = aIntervalInSeconds;
  47     }
  48
  49     /**
  50      * Initializes the scheduler.
  51      * @throws SchedulerException
  52      */
  53     public void initialize() throws SchedulerException {
  54         _scheduler.start();
  55
  56         JobDetail jobDetail = new JobDetail("kisscrawler", null, CrawlerJob.class);
  57         Trigger trigger = TriggerUtils.makeSecondlyTrigger(_intervalInSeconds);
  58         //trigger.setStartTime(TriggerUtils.getEvenHourDate(new Date()));
  59         trigger.setStartTime(new Date());
  60         trigger.setName("hourly");
  61
  62         _scheduler.scheduleJob(jobDetail, trigger);
  63     }
  64
  65     /**
  66      * Shuts down the scheduler.
  67      * @throws SchedulerException
  68      */
  69     public void shutdown() throws SchedulerException {
  70         _scheduler.shutdown();
  71     }
  72 }