public void engage() {
System.out.println("Starting the Disruptor");
// starts the event processors
final RingBuffer<DemoEvent> ringBuf = disruptor.start();
// now we start the publishers
List<Future<?>> futures = new ArrayList<Future<?>>();
ExecutorService execService = Executors.newFixedThreadPool(NUM_PUBLISHERS);
try {
for (DisruptorDemoPublisher pub : pubs) {
futures.add(execService.submit(pub));
}
// wait for each publisher to finish
for (Future<?> f : futures) {
f.get();
}
// this should wait until all events are processed
disruptor.shutdown();
} catch (Exception e) {
System.out.println(e.toString());
e.printStackTrace();
} finally {
execService.shutdown();
}
}
@Override
public void stop() {
// close all, tcp, udp, multicast
synchronized (this) {
thread.stop();
// events shouldn't hit the disruptor any more
disrupt.shutdown();
}
}
public void shutdownGracefully() throws IllegalStateException {
if (disruptor == null) {
throw new IllegalStateException("disruptor == null, call init");
}
for (ExchangeEventProducer<T> producer : producers) {
producer.stop();
}
try {
disruptor.shutdown(shutdownTimeout, TimeUnit.MINUTES);
} catch (TimeoutException ex) {
LOG.error(ex.getMessage());
}
}
public static void stop() {
final Disruptor<RingBufferLogEvent> temp = disruptor;
// Must guarantee that publishing to the RingBuffer has stopped
// before we call disruptor.shutdown()
disruptor = null; // client code fails with NPE if log after stop = OK
if (temp == null) {
return; // stop() has already been called
}
// Calling Disruptor.shutdown() will wait until all enqueued events are fully processed,
// but this waiting happens in a busy-spin. To avoid (postpone) wasting CPU,
// we sleep in short chunks, up to 10 seconds, waiting for the ringbuffer to drain.
for (int i = 0; hasBacklog(temp) && i < MAX_DRAIN_ATTEMPTS_BEFORE_SHUTDOWN; i++) {
try {
Thread.sleep(SLEEP_MILLIS_BETWEEN_DRAIN_ATTEMPTS); // give up the CPU for a while
} catch (final InterruptedException e) { // ignored
}
}
temp.shutdown(); // busy-spins until all events currently in the disruptor have been processed
EXECUTOR.shutdown(); // finally, kill the processor thread
Info.THREADLOCAL.remove(); // LOG4J2-323
}
public void close() {
for (Disruptor<RecordsHolder> disruptor : this.disruptorMap.values()) {
disruptor.shutdown();
}
}
@Override
public void stop() throws Exception {
initProcess();
disruptor.shutdown();
}
