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package org.glassfish.jersey.server.internal;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.glassfish.jersey.spi.RuntimeThreadProvider;
import org.glassfish.hk2.api.AnnotationLiteral;
import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.jvnet.hk2.annotations.Optional;
import jersey.repackaged.com.google.common.util.concurrent.ThreadFactoryBuilder;
/**
* Binder for injectable Jersey runtime executor services.
*
* Presently it implements a binding for a {@link BackgroundScheduler background scheduler} singleton
* executor service.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
public class RuntimeExecutorsBinder extends AbstractBinder {
private static class BackgroundSchedulerFactory implements Factory<ScheduledExecutorService> {
private final RuntimeThreadProvider runtimeThreadProvider;
@Inject
public BackgroundSchedulerFactory(@Optional RuntimeThreadProvider rtp) {
if (rtp == null) {
rtp = new RuntimeThreadProvider() {
@Override
public ThreadFactory getRequestThreadFactory() {
return new ThreadFactoryBuilder()
.setNameFormat("jersey-request-specific-task-thread-%d")
.build();
}
@Override
public ThreadFactory getBackgroundThreadFactory() {
return new ThreadFactoryBuilder()
.setNameFormat("jersey-background-task-thread-%d")
.build();
}
};
}
this.runtimeThreadProvider = rtp;
}
@Override
public ScheduledExecutorService provide() {
final ThreadFactory threadFactory = new ThreadFactoryBuilder()
.setNameFormat("jersey-background-task-scheduler-%d")
.setThreadFactory(runtimeThreadProvider.getBackgroundThreadFactory())
.build();
return new ScheduledThreadPoolExecutor(1, threadFactory, new RejectedExecutionHandler() {
@Override
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
// TODO: implement method.
}
});
}
@Override
public void dispose(ScheduledExecutorService instance) {
instance.shutdown();
}
}
/**
* {@link AnnotationLiteral Annotation literal} helper class for the
* {@link BackgroundScheduler @BackgroundScheduler} qualifier annotation.
*/
@SuppressWarnings("ClassExplicitlyAnnotation")
public static class BackgroundSchedulerLiteral
extends AnnotationLiteral<BackgroundScheduler> implements BackgroundScheduler {
}
@Override
protected void configure() {
bindFactory(BackgroundSchedulerFactory.class)
.to(ScheduledExecutorService.class)
.qualifiedBy(new BackgroundSchedulerLiteral())
.in(Singleton.class);
}
}