@Override
protected void work() throws Throwable {
try {
executor = new MyExecutorService(ExecutorType.CACHED_THREAD_POOL, getLogger());
final AbortHandler abortHandler =
new AbortHandler() {
@Override
public void notify(Throwable t) {
stop();
}
};
WorkerSynchronizer synchronizer = new WorkerSynchronizer();
backPressure = new Semaphore(numWorkers);
final BlockingQueue<CompletionService<Job>> ecsQueue =
new LinkedBlockingQueue<CompletionService<Job>>();
distributor =
new WorkerLauncher(
new WorkerInstantiator() {
@Override
public WorkerBase instantiate() {
LpnDistributor d =
new LpnDistributor(
abortHandler,
inTray,
executor.getThreadGroup(),
numWorkers,
jobProcessorFactory,
backPressure);
ecsQueue.add(d.getEcs());
return d;
}
},
abortHandler);
distributor.start(executor, synchronizer);
final CompletionService<Job> ecs = ecsQueue.take();
gatherer =
new WorkerLauncher(
new WorkerInstantiator() {
@Override
public WorkerBase instantiate() {
return new LpnGatherer(abortHandler, ecs, processedJobs, backPressure);
}
},
abortHandler);
gatherer.start(executor, synchronizer);
synchronizer.waitForAny();
} finally {
info("Sending kill signal to workers");
if (distributor != null) distributor.stop();
if (gatherer != null) gatherer.stop();
if (executor != null) executor.shutdownAndAwaitTermination();
}
}