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package com.sun.enterprise.v3.admin;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.ManagedJobConfig;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.api.admin.progress.JobInfo;
import org.glassfish.hk2.api.PostConstruct;
import org.glassfish.hk2.runlevel.RunLevel;
import org.glassfish.kernel.KernelLoggerInfo;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.Changed;
import org.jvnet.hk2.config.ConfigBeanProxy;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.NotProcessed;
import org.jvnet.hk2.config.ObservableBean;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
import javax.inject.Inject;
import java.beans.PropertyChangeEvent;
import java.util.ArrayList;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* This is an hk2 service which will clear all expired and inactive jobs
* @author Bhakti Mehta
*/
@Service(name="job-cleanup")
@RunLevel(value= StartupRunLevel.VAL)
public class JobCleanUpService implements PostConstruct,ConfigListener {
@Inject
JobManagerService jobManagerService;
@Inject
Domain domain;
private ManagedJobConfig managedJobConfig;
private final static Logger logger = KernelLoggerInfo.getLogger();
private ScheduledExecutorService scheduler;
private static final LocalStringManagerImpl adminStrings =
new LocalStringManagerImpl(JobCleanUpService.class);
@Override
public void postConstruct() {
logger.fine(adminStrings.getLocalString("jobcleanup.service.init", "Initializing Job Cleanup service"));
managedJobConfig = domain.getExtensionByType(ManagedJobConfig.class);
ObservableBean bean = (ObservableBean) ConfigSupport.getImpl(managedJobConfig);
logger.fine(adminStrings.getLocalString("init.managed.config.bean", "Initializing ManagedJobConfig bean"));
bean.addListener(this);
scheduler = Executors.newScheduledThreadPool(10, new ThreadFactory() {
@Override
public Thread newThread(Runnable r) {
Thread result = new Thread(r);
result.setDaemon(true);
return result;
}
});
scheduleCleanUp();
}
/**
* This will schedule a cleanup of expired jobs based on configurable values
*/
private void scheduleCleanUp() {
logger.fine(adminStrings.getLocalString("scheduling.cleanup", "Scheduling cleanup"));
//default values to 20 minutes for delayBetweenRuns and initialDelay
long delayBetweenRuns = 1200000;
long initialDelay = 1200000;
delayBetweenRuns = jobManagerService.convert(managedJobConfig.getPollInterval());
initialDelay = jobManagerService.convert(managedJobConfig.getInitialDelay());
ScheduledFuture<?> cleanupFuture = scheduler.scheduleAtFixedRate(new JobCleanUpTask(),initialDelay,delayBetweenRuns,TimeUnit.MILLISECONDS);
}
/**
* This method is notified for any changes in job-inactivity-limit or
* job-retention-period or persist, initial-delay or poll-interval option in
* ManagedJobConfig. Any change results
* in the job cleanup service to change the behaviour
* being updated.
* @param events the configuration change events.
* @return the unprocessed change events.
*/
@Override
public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
return ConfigSupport.sortAndDispatch(events, new PropertyChangeHandler(), logger);
}
private final class JobCleanUpTask implements Runnable {
public void run() {
try {
logger.fine(adminStrings.getLocalString("cleaning.jobs","Cleaning jobs"));
cleanUpExpiredJobs();
} catch (Exception e ) {
throw new RuntimeException(adminStrings.getLocalString("error.cleaning.jobs","Error while cleaning jobs" +e));
}
}
}
/**
* This will periodically purge expired jobs
*/
private void cleanUpExpiredJobs() {
ArrayList<JobInfo> expiredJobs = jobManagerService.getExpiredJobs();
if (expiredJobs.size() > 0 ) {
for (JobInfo job: expiredJobs) {
//remove from Job registy
jobManagerService.purgeJob(job.jobId);
//remove from jobs.xml file
jobManagerService.purgeCompletedJobForId(job.jobId);
//remove from local cache for completed jobs
jobManagerService.removeFromCompletedJobs(job.jobId);
logger.fine(adminStrings.getLocalString("cleaning.job","Cleaning job {0}", job.jobId));
}
}
}
class PropertyChangeHandler implements Changed {
@Override
public <T extends ConfigBeanProxy> NotProcessed changed(TYPE type, Class<T> changedType, T changedInstance) {
NotProcessed np = null;
switch (type) {
case CHANGE:
if(logger.isLoggable(Level.FINE)) {
logger.fine(adminStrings.getLocalString("managedJobConfig.change","ManagedJobConfig {0} was changed by {1} " , changedType.getName() , changedInstance));
}
np = handleChangeEvent(changedInstance);
break;
default:
}
return np;
}
private <T extends ConfigBeanProxy> NotProcessed handleChangeEvent(T instance) {
scheduleCleanUp();
return null;
}
}
}