org.apache.flink.shaded.guava18.com.google.common.collect.Iterators Java Examples

@Test
public void testReporterIntervalParsingErrorFallsBackToDefaultValue() throws Exception {
	MetricConfig config = new MetricConfig();
	// in a prior implementation the time amount was applied even if the time unit was invalid
	// in this case this would imply using 1 SECOND as the interval (seconds is the default)
	config.setProperty(ConfigConstants.METRICS_REPORTER_INTERVAL_SUFFIX, "1 UNICORN");

	final ManuallyTriggeredScheduledExecutorService manuallyTriggeredScheduledExecutorService = new ManuallyTriggeredScheduledExecutorService();

	MetricRegistryImpl registry = new MetricRegistryImpl(
		MetricRegistryConfiguration.defaultMetricRegistryConfiguration(),
		Collections.singletonList(ReporterSetup.forReporter("test", config, new TestReporter3())),
		manuallyTriggeredScheduledExecutorService);
	try {
		Collection<ScheduledFuture<?>> scheduledTasks = manuallyTriggeredScheduledExecutorService.getScheduledTasks();
		ScheduledFuture<?> reportTask = Iterators.getOnlyElement(scheduledTasks.iterator());
		Assert.assertEquals(MetricOptions.REPORTER_INTERVAL.defaultValue().getSeconds(), reportTask.getDelay(TimeUnit.SECONDS));
	} finally {
		registry.shutdown().get();
	}
}
 

/**
 * Returns in iterator over all available implementations of the given service interface (SPI) in all the plugins
 * known to this plugin manager instance.
 *
 * @param service the service interface (SPI) for which implementations are requested.
 * @param <P> Type of the requested plugin service.
 * @return Iterator over all implementations of the given service that could be loaded from all known plugins.
 */
public <P extends Plugin> Iterator<P> load(Class<P> service) {
	ArrayList<Iterator<P>> combinedIterators = new ArrayList<>(pluginDescriptors.size());
	for (PluginDescriptor pluginDescriptor : pluginDescriptors) {
		PluginLoader pluginLoader = PluginLoader.create(pluginDescriptor, parentClassLoader, alwaysParentFirstPatterns);
		combinedIterators.add(pluginLoader.load(service));
	}
	return Iterators.concat(combinedIterators.iterator());
}
 

@Override
public <P> Iterator<P> load(Class<P> service) {
	ArrayList<Iterator<P>> combinedIterators = new ArrayList<>(pluginDescriptors.size());
	for (PluginDescriptor pluginDescriptor : pluginDescriptors) {
		PluginLoader pluginLoader = PluginLoader.create(pluginDescriptor, parentClassLoader, alwaysParentFirstPatterns);
		combinedIterators.add(pluginLoader.load(service));
	}
	return Iterators.concat(combinedIterators.iterator());
}
 

private static Iterator<MetricReporterFactory> getAllReporterFactories(@Nullable PluginManager pluginManager) {
	final Iterator<MetricReporterFactory> factoryIteratorSPI = ServiceLoader.load(MetricReporterFactory.class).iterator();
	final Iterator<MetricReporterFactory> factoryIteratorPlugins = pluginManager != null
		? pluginManager.load(MetricReporterFactory.class)
		: Collections.emptyIterator();

	return Iterators.concat(factoryIteratorPlugins, factoryIteratorSPI);
}
 

@Nullable
static StreamStateHandle readSnapshot(TaskStateManager stateManager, OperatorID operatorId) {
	final PrioritizedOperatorSubtaskState poss = stateManager.prioritizedOperatorState(operatorId);
	if (!poss.isRestored()) {
		return null;
	}

	final StateObjectCollection<OperatorStateHandle> opState =
		stateManager.prioritizedOperatorState(operatorId).getPrioritizedManagedOperatorState().get(0);
	final OperatorStateHandle handle = Iterators.getOnlyElement(opState.iterator());
	return handle.getDelegateStateHandle();
}
 

@Override
public java.util.Iterator<Object> iterator() {
	return Iterators.forArray(toArray());
}
 

@Override
public java.util.Iterator<Object> iterator() {
	return Iterators.forArray(toArray());
}