| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The SF 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 |
| * |
| * 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.apache.felix.hc.core.impl.scheduling; |
| |
| import static org.quartz.CronScheduleBuilder.cronSchedule; |
| import static org.quartz.JobBuilder.newJob; |
| import static org.quartz.TriggerBuilder.newTrigger; |
| |
| import org.quartz.CronTrigger; |
| import org.quartz.Job; |
| import org.quartz.JobDataMap; |
| import org.quartz.JobDetail; |
| import org.quartz.JobExecutionContext; |
| import org.quartz.JobExecutionException; |
| import org.quartz.JobKey; |
| import org.quartz.Scheduler; |
| import org.quartz.SchedulerException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** Async job to be used by async health checks and async monitor. |
| * |
| * This implementation uses quartz to support the cron syntax (which is not supported by executors from standard java java.util.concurrent |
| * package) */ |
| public class AsyncQuartzCronJob extends AsyncJob { |
| private static final Logger LOG = LoggerFactory.getLogger(AsyncQuartzCronJob.class); |
| |
| private static final String JOB_DATA_KEY_JOB = "asyncHcJob"; |
| |
| private final String id; |
| private final String group; |
| private final String cronExpression; |
| |
| private final Scheduler quartzScheduler; |
| |
| private JobKey jobKey = null; |
| |
| public AsyncQuartzCronJob(Runnable runnable, Scheduler quartzScheduler, String id, String group, String cronExpression) { |
| super(runnable); |
| this.quartzScheduler = quartzScheduler; |
| this.id = id; |
| this.group = group; |
| this.cronExpression = cronExpression; |
| } |
| |
| public JobKey getJobKey() { |
| return jobKey; |
| } |
| |
| private JobDetail getQuartzJobDetail() { |
| JobDataMap jobData = new JobDataMap(); |
| jobData.put(JOB_DATA_KEY_JOB, runnable); |
| |
| JobDetail job = newJob(AsyncQuartzCronJob.QuartzJob.class).setJobData(jobData) |
| .withIdentity(id, group) |
| .build(); |
| |
| jobKey = job.getKey(); |
| |
| return job; |
| } |
| |
| public boolean schedule() { |
| |
| try { |
| |
| JobDetail job = getQuartzJobDetail(); |
| CronTrigger cronTrigger = newTrigger().withSchedule(cronSchedule(cronExpression)).forJob(job) |
| .build(); |
| |
| quartzScheduler.scheduleJob(job, cronTrigger); |
| LOG.info("Scheduled job {} with trigger {}", job, cronTrigger); |
| return true; |
| } catch (SchedulerException e) { |
| LOG.error("Could not schedule job for " + runnable + ": " + e, e); |
| return false; |
| } |
| |
| } |
| |
| @Override |
| public boolean unschedule() { |
| LOG.debug("Unscheduling job {}", jobKey); |
| try { |
| quartzScheduler.deleteJob(jobKey); |
| return true; |
| } catch (SchedulerException e) { |
| LOG.error("Could not unschedule job for " + jobKey + ": " + e, e); |
| return false; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "[Async quartz job for " + runnable + "]"; |
| } |
| |
| // quartz forces to pass in a class object (and not an instance), hence this helper class is needed |
| public static class QuartzJob implements Job { |
| |
| @Override |
| public void execute(JobExecutionContext context) throws JobExecutionException { |
| Runnable ayncJob = (Runnable) context.getJobDetail().getJobDataMap().get(JOB_DATA_KEY_JOB); |
| ayncJob.run(); |
| } |
| } |
| |
| } |