Examples with HeartbeatGenerator org.opennms.core.ipc.sink.camel.HeartbeatSinkPerfIT.HeartbeatGenerator used on opensource projects

Example 1 with HeartbeatGenerator

use of org.opennms.core.ipc.sink.camel.HeartbeatSinkPerfIT.HeartbeatGenerator in project opennms by OpenNMS.

the class HeartbeatSinkBlueprintIT method canConsumeMessagesInParallel.

@Test(timeout = 60000)
public void canConsumeMessagesInParallel() throws Exception {
    final int NUM_CONSUMER_THREADS = 7;
    final HeartbeatModule parallelHeartbeatModule = new HeartbeatModule() {

        @Override
        public int getNumConsumerThreads() {
            return NUM_CONSUMER_THREADS;
        }
    };
    ThreadLockingMessageConsumer<Heartbeat, Heartbeat> consumer = new ThreadLockingMessageConsumer<>(parallelHeartbeatModule);
    CompletableFuture<Integer> future = consumer.waitForThreads(NUM_CONSUMER_THREADS);
    consumerManager.registerConsumer(consumer);
    MessageDispatcherFactory remoteMessageDispatcherFactory = context.getRegistry().lookupByNameAndType("camelRemoteMessageDispatcherFactory", MessageDispatcherFactory.class);
    SyncDispatcher<Heartbeat> dispatcher = remoteMessageDispatcherFactory.createSyncDispatcher(HeartbeatModule.INSTANCE);
    HeartbeatGenerator generator = new HeartbeatGenerator(dispatcher, 100.0);
    generator.start();
    // Wait until we have NUM_CONSUMER_THREADS locked
    future.get();
    // Take a snooze
    Thread.sleep(TimeUnit.SECONDS.toMillis(5));
    // Verify that there aren't more than NUM_CONSUMER_THREADS waiting
    assertEquals(0, consumer.getNumExtraThreadsWaiting());
    generator.stop();
// This doesn't work because the consumer seems to leave NUM_CONSUMER_THREADS
// messages in-flight if it's unregistered before the context shuts down
// consumerManager.unregisterConsumer(consumer);
}