Examples with ThreadPoolExecutor java.util.concurrent.ThreadPoolExecutor used on opensource projects

Example 1 with ThreadPoolExecutor

use of java.util.concurrent.ThreadPoolExecutor in project camel by apache.

the class DisruptorReference method resizeThreadPoolExecutor.

private void resizeThreadPoolExecutor(final int newSize) {
    if (executor == null && newSize > 0) {
        LOGGER.debug("Creating new executor with {} threads", newSize);
        //no thread pool executor yet, create a new one
        executor = component.getCamelContext().getExecutorServiceManager().newFixedThreadPool(this, uri, newSize);
    } else if (executor != null && newSize <= 0) {
        LOGGER.debug("Shutting down executor");
        //we need to shut down our executor
        component.getCamelContext().getExecutorServiceManager().shutdown(executor);
        executor = null;
    } else if (executor instanceof ThreadPoolExecutor) {
        LOGGER.debug("Resizing existing executor to {} threads", newSize);
        //our thread pool executor is of type ThreadPoolExecutor, we know how to resize it
        final ThreadPoolExecutor threadPoolExecutor = (ThreadPoolExecutor) executor;
        threadPoolExecutor.setCorePoolSize(newSize);
        threadPoolExecutor.setMaximumPoolSize(newSize);
    } else if (newSize > 0) {
        LOGGER.debug("Shutting down old and creating new executor with {} threads", newSize);
        //hmmm...no idea what kind of executor this is...just kill it and start fresh
        component.getCamelContext().getExecutorServiceManager().shutdown(executor);
        executor = component.getCamelContext().getExecutorServiceManager().newFixedThreadPool(this, uri, newSize);
    }
}

Example 2 with ThreadPoolExecutor

use of java.util.concurrent.ThreadPoolExecutor in project camel by apache.

the class DefaultExecutorServiceManager method doShutdown.

private boolean doShutdown(ExecutorService executorService, long shutdownAwaitTermination, boolean failSafe) {
    if (executorService == null) {
        return false;
    }
    boolean warned = false;
    // we ought to shutdown much faster)
    if (!executorService.isShutdown()) {
        StopWatch watch = new StopWatch();
        LOG.trace("Shutdown of ExecutorService: {} with await termination: {} millis", executorService, shutdownAwaitTermination);
        executorService.shutdown();
        if (shutdownAwaitTermination > 0) {
            try {
                if (!awaitTermination(executorService, shutdownAwaitTermination)) {
                    warned = true;
                    LOG.warn("Forcing shutdown of ExecutorService: {} due first await termination elapsed.", executorService);
                    executorService.shutdownNow();
                    // we are now shutting down aggressively, so wait to see if we can completely shutdown or not
                    if (!awaitTermination(executorService, shutdownAwaitTermination)) {
                        LOG.warn("Cannot completely force shutdown of ExecutorService: {} due second await termination elapsed.", executorService);
                    }
                }
            } catch (InterruptedException e) {
                warned = true;
                LOG.warn("Forcing shutdown of ExecutorService: {} due interrupted.", executorService);
                // we were interrupted during shutdown, so force shutdown
                executorService.shutdownNow();
            }
        }
        // if we logged at WARN level, then report at INFO level when we are complete so the end user can see this in the log
        if (warned) {
            LOG.info("Shutdown of ExecutorService: {} is shutdown: {} and terminated: {} took: {}.", executorService, executorService.isShutdown(), executorService.isTerminated(), TimeUtils.printDuration(watch.taken()));
        } else if (LOG.isDebugEnabled()) {
            LOG.debug("Shutdown of ExecutorService: {} is shutdown: {} and terminated: {} took: {}.", executorService, executorService.isShutdown(), executorService.isTerminated(), TimeUtils.printDuration(watch.taken()));
        }
    }
    // let lifecycle strategy be notified as well which can let it be managed in JMX as well
    ThreadPoolExecutor threadPool = null;
    if (executorService instanceof ThreadPoolExecutor) {
        threadPool = (ThreadPoolExecutor) executorService;
    } else if (executorService instanceof SizedScheduledExecutorService) {
        threadPool = ((SizedScheduledExecutorService) executorService).getScheduledThreadPoolExecutor();
    }
    if (threadPool != null) {
        for (LifecycleStrategy lifecycle : camelContext.getLifecycleStrategies()) {
            lifecycle.onThreadPoolRemove(camelContext, threadPool);
        }
    }
    // remove reference as its shutdown (do not remove if fail-safe)
    if (!failSafe) {
        executorServices.remove(executorService);
    }
    return warned;
}

Example 3 with ThreadPoolExecutor

use of java.util.concurrent.ThreadPoolExecutor in project camel by apache.

the class DefaultExecutorServiceManager method onThreadPoolCreated.

/**
     * Invoked when a new thread pool is created.
     * This implementation will invoke the {@link LifecycleStrategy#onThreadPoolAdd(org.apache.camel.CamelContext,
     * java.util.concurrent.ThreadPoolExecutor, String, String, String, String) LifecycleStrategy.onThreadPoolAdd} method,
     * which for example will enlist the thread pool in JMX management.
     *
     * @param executorService the thread pool
     * @param source          the source to use the thread pool
     * @param threadPoolProfileId profile id, if the thread pool was created from a thread pool profile
     */
private void onThreadPoolCreated(ExecutorService executorService, Object source, String threadPoolProfileId) {
    // add to internal list of thread pools
    executorServices.add(executorService);
    String id;
    String sourceId = null;
    String routeId = null;
    // extract id from source
    if (source instanceof NamedNode) {
        id = ((OptionalIdentifiedDefinition<?>) source).idOrCreate(this.camelContext.getNodeIdFactory());
        // and let source be the short name of the pattern
        sourceId = ((NamedNode) source).getShortName();
    } else if (source instanceof String) {
        id = (String) source;
    } else if (source != null) {
        if (source instanceof StaticService) {
            // the source is static service so its name would be unique
            id = source.getClass().getSimpleName();
        } else {
            // fallback and use the simple class name with hashcode for the id so its unique for this given source
            id = source.getClass().getSimpleName() + "(" + ObjectHelper.getIdentityHashCode(source) + ")";
        }
    } else {
        // no source, so fallback and use the simple class name from thread pool and its hashcode identity so its unique
        id = executorService.getClass().getSimpleName() + "(" + ObjectHelper.getIdentityHashCode(executorService) + ")";
    }
    // id is mandatory
    ObjectHelper.notEmpty(id, "id for thread pool " + executorService);
    // extract route id if possible
    if (source instanceof ProcessorDefinition) {
        RouteDefinition route = ProcessorDefinitionHelper.getRoute((ProcessorDefinition<?>) source);
        if (route != null) {
            routeId = route.idOrCreate(this.camelContext.getNodeIdFactory());
        }
    }
    // let lifecycle strategy be notified as well which can let it be managed in JMX as well
    ThreadPoolExecutor threadPool = null;
    if (executorService instanceof ThreadPoolExecutor) {
        threadPool = (ThreadPoolExecutor) executorService;
    } else if (executorService instanceof SizedScheduledExecutorService) {
        threadPool = ((SizedScheduledExecutorService) executorService).getScheduledThreadPoolExecutor();
    }
    if (threadPool != null) {
        for (LifecycleStrategy lifecycle : camelContext.getLifecycleStrategies()) {
            lifecycle.onThreadPoolAdd(camelContext, threadPool, id, sourceId, routeId, threadPoolProfileId);
        }
    }
    // now call strategy to allow custom logic
    onNewExecutorService(executorService);
}

Example 4 with ThreadPoolExecutor

use of java.util.concurrent.ThreadPoolExecutor in project camel by apache.

the class DefaultExecutorServiceManagerTest method testDefaultNoMaxQueueThreadPool.

public void testDefaultNoMaxQueueThreadPool() throws Exception {
    ThreadPoolProfile custom = new ThreadPoolProfile("custom");
    custom.setPoolSize(10);
    custom.setMaxPoolSize(30);
    custom.setKeepAliveTime(50L);
    custom.setMaxQueueSize(0);
    context.getExecutorServiceManager().setDefaultThreadPoolProfile(custom);
    assertEquals(true, custom.isDefaultProfile().booleanValue());
    ExecutorService myPool = context.getExecutorServiceManager().newDefaultThreadPool(this, "myPool");
    assertEquals(false, myPool.isShutdown());
    // should use default settings
    ThreadPoolExecutor executor = (ThreadPoolExecutor) myPool;
    assertEquals(10, executor.getCorePoolSize());
    assertEquals(30, executor.getMaximumPoolSize());
    assertEquals(50, executor.getKeepAliveTime(TimeUnit.SECONDS));
    assertEquals(0, executor.getQueue().remainingCapacity());
    context.stop();
    assertEquals(true, myPool.isShutdown());
}

Example 5 with ThreadPoolExecutor

use of java.util.concurrent.ThreadPoolExecutor in project camel by apache.

the class DefaultExecutorServiceStrategyTest method testDefaultUnboundedQueueThreadPool.

public void testDefaultUnboundedQueueThreadPool() throws Exception {
    ThreadPoolProfileSupport custom = new ThreadPoolProfileSupport("custom");
    custom.setPoolSize(10);
    custom.setMaxPoolSize(30);
    custom.setKeepAliveTime(50L);
    custom.setMaxQueueSize(Integer.MAX_VALUE);
    context.getExecutorServiceStrategy().setDefaultThreadPoolProfile(custom);
    assertEquals(true, custom.isDefaultProfile().booleanValue());
    ExecutorService myPool = context.getExecutorServiceStrategy().newDefaultThreadPool(this, "myPool");
    assertEquals(false, myPool.isShutdown());
    // should use default settings
    ThreadPoolExecutor executor = (ThreadPoolExecutor) myPool;
    assertEquals(10, executor.getCorePoolSize());
    assertEquals(30, executor.getMaximumPoolSize());
    assertEquals(50, executor.getKeepAliveTime(TimeUnit.SECONDS));
    assertEquals(Integer.MAX_VALUE, executor.getQueue().remainingCapacity());
    context.stop();
    assertEquals(true, myPool.isShutdown());
}