com.arpnetworking.metrics.mad.Main Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of metrics-aggregator-daemon Show documentation
Show all versions of metrics-aggregator-daemon Show documentation
Aggregates samples published by metrics client libraries and writes to destinations.
/*
* Copyright 2014 Brandon Arp
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.arpnetworking.metrics.mad;
import ch.qos.logback.classic.LoggerContext;
import com.arpnetworking.commons.builder.Builder;
import com.arpnetworking.commons.jackson.databind.ImmutableObjectMapper;
import com.arpnetworking.commons.jackson.databind.ObjectMapperFactory;
import com.arpnetworking.configuration.jackson.DynamicConfiguration;
import com.arpnetworking.configuration.jackson.HoconFileSource;
import com.arpnetworking.configuration.jackson.JsonNodeFileSource;
import com.arpnetworking.configuration.jackson.JsonNodeSource;
import com.arpnetworking.configuration.jackson.module.pekko.PekkoLoggingModule;
import com.arpnetworking.configuration.triggers.FileTrigger;
import com.arpnetworking.http.Routes;
import com.arpnetworking.http.SupplementalRoutes;
import com.arpnetworking.metrics.MetricsFactory;
import com.arpnetworking.metrics.impl.ApacheHttpSink;
import com.arpnetworking.metrics.impl.TsdMetricsFactory;
import com.arpnetworking.metrics.incubator.PeriodicMetrics;
import com.arpnetworking.metrics.incubator.impl.TsdPeriodicMetrics;
import com.arpnetworking.metrics.jvm.ExecutorServiceMetricsRunnable;
import com.arpnetworking.metrics.jvm.JvmMetricsRunnable;
import com.arpnetworking.metrics.mad.actors.DeadLetterLogger;
import com.arpnetworking.metrics.mad.actors.Status;
import com.arpnetworking.metrics.mad.configuration.AggregatorConfiguration;
import com.arpnetworking.metrics.mad.configuration.PipelineConfiguration;
import com.arpnetworking.metrics.proxy.actors.Telemetry;
import com.arpnetworking.steno.Logger;
import com.arpnetworking.steno.LoggerFactory;
import com.arpnetworking.utility.Configurator;
import com.arpnetworking.utility.Launchable;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Provides;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import org.apache.pekko.actor.ActorRef;
import org.apache.pekko.actor.ActorSystem;
import org.apache.pekko.actor.DeadLetter;
import org.apache.pekko.actor.Props;
import org.apache.pekko.actor.Terminated;
import org.apache.pekko.dispatch.Dispatcher;
import org.apache.pekko.http.javadsl.ConnectionContext;
import org.apache.pekko.http.javadsl.Http;
import org.apache.pekko.http.javadsl.HttpsConnectionContext;
import org.apache.pekko.stream.Materializer;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMParser;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.bouncycastle.util.io.pem.PemObject;
import scala.concurrent.Await;
import scala.concurrent.ExecutionContextExecutor;
import scala.concurrent.Future;
import scala.concurrent.duration.Duration;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.SecureRandom;
import java.security.Security;
import java.security.UnrecoverableKeyException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import javax.annotation.Nullable;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
/**
* Class containing entry point for Metrics Data Aggregator (MAD).
*
* @author Brandon Arp (brandon dot arp at inscopemetrics dot io)
* @author Ville Koskela (ville dot koskela at inscopemetrics dot io)
*/
public final class Main implements Launchable {
/**
* Entry point for Metrics Aggregator Daemon (MAD).
*
* @param args the command line arguments
*/
public static void main(final String[] args) {
// Global initialization
Thread.setDefaultUncaughtExceptionHandler(
(thread, throwable) -> {
System.err.println("Unhandled exception! exception: " + throwable.toString());
throwable.printStackTrace(System.err);
});
Thread.currentThread().setUncaughtExceptionHandler(
(thread, throwable) -> LOGGER.error()
.setMessage("Unhandled exception!")
.setThrowable(throwable)
.log()
);
LOGGER.info().setMessage("Launching mad").log();
Runtime.getRuntime().addShutdownHook(SHUTDOWN_THREAD);
System.setProperty("org.vertx.logger-delegate-factory-class-name", "org.vertx.java.core.logging.impl.SLF4JLogDelegateFactory");
// Run the tsd aggregator
if (args.length != 1) {
throw new RuntimeException("No configuration file specified");
}
LOGGER.debug()
.setMessage("Loading configuration")
.addData("file", args[0])
.log();
Optional configuration = Optional.empty();
Optional> configurator = Optional.empty();
try {
final File configurationFile = new File(args[0]);
configurator = Optional.of(new Configurator<>(Main::new, AggregatorConfiguration.class));
configuration = Optional.of(new DynamicConfiguration.Builder()
.setObjectMapper(OBJECT_MAPPER)
.addSourceBuilder(getFileSourceBuilder(configurationFile))
.addTrigger(
new FileTrigger.Builder()
.setFile(configurationFile)
.build())
.addListener(configurator.get())
.build());
configuration.ifPresent(DynamicConfiguration::launch);
// Wait for application shutdown
SHUTDOWN_SEMAPHORE.acquire();
} catch (final InterruptedException e) {
throw new RuntimeException(e);
} finally {
configurator.ifPresent(Configurator::shutdown);
configuration.ifPresent(DynamicConfiguration::shutdown);
// Notify the shutdown that we're done
SHUTDOWN_SEMAPHORE.release();
}
}
/**
* Public constructor.
*
* @param configuration Instance of {@link AggregatorConfiguration}.
*/
public Main(final AggregatorConfiguration configuration) {
_configuration = configuration;
}
@Override
public synchronized void launch() {
_actorSystem = launchPekko();
final Injector injector = launchGuice(_actorSystem);
launchActors(injector);
launchPipelines(injector);
launchJvmMetricsCollector(injector);
}
@Override
public synchronized void shutdown() {
shutdownJvmMetricsCollector();
shutdownPipelines();
shutdownActors();
shutdownGuice();
shutdownPekko();
}
private void launchJvmMetricsCollector(final Injector injector) {
LOGGER.info().setMessage("Launching JVM metrics collector.").log();
final Runnable jvmMetricsRunnable = new JvmMetricsRunnable.Builder()
.setMetricsFactory(injector.getInstance(MetricsFactory.class))
.build();
final Runnable jvmExecutorServiceMetricsRunnable = new ExecutorServiceMetricsRunnable.Builder()
.setMetricsFactory(injector.getInstance(MetricsFactory.class))
.setExecutorServices(createExecutorServiceMap(_actorSystem))
.build();
_jvmMetricsCollector = Executors.newSingleThreadScheduledExecutor(r -> new Thread(r, "JVMMetricsCollector"));
_jvmMetricsCollector.scheduleAtFixedRate(
jvmMetricsRunnable,
INITIAL_DELAY_IN_MILLIS,
_configuration.getJvmMetricsCollectionInterval().toMillis(),
TIME_UNIT);
_jvmMetricsCollector.scheduleAtFixedRate(
jvmExecutorServiceMetricsRunnable,
INITIAL_DELAY_IN_MILLIS,
_configuration.getJvmMetricsCollectionInterval().toMillis(),
TIME_UNIT);
}
private void launchPipelines(final Injector injector) {
LOGGER.info().setMessage("Launching pipelines").log();
_pipelinesLaunchable = new PipelinesLaunchable(
PipelineConfiguration.createObjectMapper(injector),
_configuration.getPipelinesDirectory());
_pipelinesLaunchable.launch();
}
private void launchActors(final Injector injector) {
LOGGER.info().setMessage("Launching actors").log();
// Retrieve the actor system
final ActorSystem actorSystem = injector.getInstance(ActorSystem.class);
// Create the dead letter logger
if (_configuration.getLogDeadLetters()) {
final ActorRef deadMailMan = actorSystem.actorOf(Props.create(DeadLetterLogger.class), "deadmailman");
actorSystem.eventStream().subscribe(deadMailMan, DeadLetter.class);
}
// Create the status actor
actorSystem.actorOf(Props.create(Status.class), "status");
// Create the telemetry connection actor
actorSystem.actorOf(Props.create(Telemetry.class, injector.getInstance(MetricsFactory.class)), "telemetry");
// Load supplemental routes
final ImmutableList.Builder supplementalHttpRoutes = ImmutableList.builder();
_configuration.getSupplementalHttpRoutesClass().ifPresent(
clazz -> supplementalHttpRoutes.add(injector.getInstance(clazz)));
// Create and bind Http server
final Materializer materializer = Materializer.createMaterializer(actorSystem);
final Routes routes = new Routes(
actorSystem,
injector.getInstance(PeriodicMetrics.class),
_configuration.getHttpHealthCheckPath(),
_configuration.getHttpStatusPath(),
supplementalHttpRoutes.build());
final Http http = Http.get(actorSystem);
http.newServerAt(_configuration.getHttpHost(), _configuration.getHttpPort()).withMaterializer(materializer).bind(routes);
if (_configuration.getEnableHttps()) {
Security.addProvider(new BouncyCastleProvider());
final HttpsConnectionContext httpsContext = createHttpsContext();
http.newServerAt(_configuration.getHttpsHost(), _configuration.getHttpsPort())
.withMaterializer(materializer).enableHttps(httpsContext)
.bind(routes);
}
}
private HttpsConnectionContext createHttpsContext() {
final PrivateKey privateKey;
try (PEMParser keyReader = new PEMParser(
new InputStreamReader(
new FileInputStream(_configuration.getHttpsKeyPath()), StandardCharsets.UTF_8))) {
final Object keyObject = keyReader.readObject();
if (keyObject instanceof PrivateKeyInfo) {
final PrivateKeyInfo privateKeyInfo = (PrivateKeyInfo) keyObject;
privateKey = new JcaPEMKeyConverter().getPrivateKey(privateKeyInfo);
} else {
throw new RuntimeException(
String.format("Invalid private key format, expected PEM private key, got %s", keyObject.getClass().getName()));
}
} catch (final FileNotFoundException e) {
throw new RuntimeException(String.format("Could not find https key file: %s", _configuration.getHttpsKeyPath()), e);
} catch (final IOException e) {
throw new RuntimeException(String.format("Error reading https key file: %s", _configuration.getHttpsKeyPath()), e);
}
final X509Certificate cert;
try (PEMParser certReader = new PEMParser(
new InputStreamReader(
new FileInputStream(_configuration.getHttpsCertificatePath()), StandardCharsets.UTF_8))) {
final PemObject certObject = certReader.readPemObject();
final CertificateFactory cf = CertificateFactory.getInstance("X.509");
cert = (X509Certificate) cf.generateCertificate(new ByteArrayInputStream(certObject.getContent()));
} catch (final FileNotFoundException e) {
throw new RuntimeException(
String.format("Could not find https certificate file: %s", _configuration.getHttpsCertificatePath()), e);
} catch (final IOException e) {
throw new RuntimeException(
String.format("Error reading https certificate file: %s", _configuration.getHttpsCertificatePath()), e);
} catch (final CertificateException e) {
throw new RuntimeException("Error building X509 certificate", e);
}
try {
final KeyStore ks = KeyStore.getInstance("JKS");
ks.load(null, null);
ks.setCertificateEntry("cert", cert);
ks.setKeyEntry("key", privateKey, new char[0], new Certificate[]{cert});
final KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("SunX509");
keyManagerFactory.init(ks, new char[0]);
final TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
tmf.init(ks);
final SSLContext sslContext = SSLContext.getInstance("TLSv1.3");
sslContext.init(keyManagerFactory.getKeyManagers(), tmf.getTrustManagers(), new SecureRandom());
return ConnectionContext.httpsServer(sslContext);
} catch (final UnrecoverableKeyException | KeyManagementException | NoSuchAlgorithmException | IOException
| KeyStoreException | CertificateException e) {
throw new RuntimeException("Could not create SSLContext for https configuration", e);
}
}
@SuppressWarnings("deprecation")
private Injector launchGuice(final ActorSystem actorSystem) {
LOGGER.info().setMessage("Launching guice").log();
// Create directories
if (_configuration.getLogDirectory().mkdirs()) {
LOGGER.info()
.setMessage("Created log directory")
.addData("directory", _configuration.getLogDirectory())
.log();
}
if (_configuration.getPipelinesDirectory().mkdirs()) {
LOGGER.info()
.setMessage("Created pipelines directory")
.addData("directory", _configuration.getPipelinesDirectory())
.log();
}
// Instantiate the metrics factory
final ImmutableList.Builder monitoringSinksBuilder =
new ImmutableList.Builder<>();
if (_configuration.getMetricsClientHost().isPresent()
|| _configuration.getMetricsClientPort().isPresent()) {
final String endpoint = String.format(
"http://%s:%d/metrics/v3/application",
_configuration.getMetricsClientHost().orElse("localhost"),
_configuration.getMetricsClientPort().orElse(7090));
monitoringSinksBuilder.add(
new ApacheHttpSink.Builder()
.setUri(URI.create(endpoint))
.build());
} else {
monitoringSinksBuilder.addAll(createSinks(_configuration.getMonitoringSinks()));
}
final TsdMetricsFactory.Builder metricsFactoryBuilder = new TsdMetricsFactory.Builder()
.setClusterName(_configuration.getMonitoringCluster())
.setServiceName(_configuration.getMonitoringService())
.setSinks(monitoringSinksBuilder.build());
if (_configuration.getMonitoringHost().isPresent()) {
metricsFactoryBuilder.setHostName(_configuration.getMonitoringHost().get());
}
final MetricsFactory metricsFactory = metricsFactoryBuilder.build();
final AppShutdown shutdown = new AppShutdown();
_guiceAppShutdown = shutdown;
// Instantiate Guice
return Guice.createInjector(new MainModule(actorSystem, metricsFactory, shutdown));
}
@SuppressFBWarnings("REC_CATCH_EXCEPTION")
static List createSinks(
final ImmutableList monitoringSinks) {
// Until we implement the Commons Builder pattern in the metrics client
// library we need to resort to a more brute-force deserialization
// style. The benefit of this approach is that it will be forwards
// compatible with the Commons Builder approach. The drawbacks are
// the ugly way the configuration is passed around (as JsonNode) and
// then two-step deserialized.
final List sinks = new ArrayList<>();
for (final JsonNode sinkNode : monitoringSinks) {
@Nullable final JsonNode classNode = sinkNode.get("class");
try {
if (classNode != null) {
final Class builderClass = Class.forName(classNode.textValue() + "$Builder");
final Object builder = OBJECT_MAPPER.treeToValue(sinkNode, builderClass);
@SuppressWarnings("unchecked")
final com.arpnetworking.metrics.Sink sink =
(com.arpnetworking.metrics.Sink) builderClass.getMethod("build").invoke(builder);
sinks.add(sink);
}
// CHECKSTYLE.OFF: IllegalCatch - There are so many ways this hack can fail!
} catch (final Exception e) {
// CHECKSTYLE.ON: IllegalCatch
throw new RuntimeException("Unable to create sink from: " + sinkNode.toString(), e);
}
}
return sinks;
}
private ActorSystem launchPekko() {
final Config pekkoConfiguration = ConfigFactory.parseMap(_configuration.getPekkoConfiguration());
return ActorSystem.create("MAD", ConfigFactory.load(pekkoConfiguration));
}
private void shutdownJvmMetricsCollector() {
LOGGER.info().setMessage("Stopping JVM metrics collection").log();
if (_jvmMetricsCollector != null) {
_jvmMetricsCollector.shutdown();
}
}
private void shutdownPipelines() {
LOGGER.info().setMessage("Stopping pipelines").log();
_pipelinesLaunchable.shutdown();
}
private void shutdownActors() {
LOGGER.info().setMessage("Stopping actors").log();
}
private void shutdownPekko() {
LOGGER.info().setMessage("Stopping pekko").log();
if (_actorSystem != null) {
final Future terminate = _actorSystem.terminate();
try {
Await.result(terminate, Duration.create(30, TimeUnit.SECONDS));
// CHECKSTYLE.OFF: IllegalCatch - Await.result throws Exception
} catch (final Exception e) {
// CHECKSTYLE.ON: IllegalCatch
LOGGER.warn()
.setMessage("Exception while shutting down actor system")
.setThrowable(e)
.log();
}
_actorSystem = null;
}
}
private void shutdownGuice() {
LOGGER.info().setMessage("Stopping guice").log();
if (_guiceAppShutdown != null) {
_guiceAppShutdown.shutdown();
}
}
private static Map createExecutorServiceMap(
final ActorSystem actorSystem) {
final Map executorServices = Maps.newHashMap();
// Add the default dispatcher
addExecutorServiceFromExecutionContextExecutor(
executorServices,
"pekko/default_dispatcher",
actorSystem.dispatcher());
// TODO(ville): Support monitoring additional dispatchers via configuration.
return executorServices;
}
private static void addExecutorServiceFromExecutionContextExecutor(
final Map executorServices,
final String name,
final ExecutionContextExecutor executionContextExecutor) {
if (executionContextExecutor instanceof Dispatcher) {
final Dispatcher dispatcher = (Dispatcher) executionContextExecutor;
addExecutorService(
executorServices,
name,
dispatcher.executorService().executor());
// TODO(ville): Support other ExecutionContextExecutor types as appropriate
} else {
throw new IllegalArgumentException(
"Unsupported ExecutionContextExecutor type: " + executionContextExecutor.getClass().getName());
}
}
private static void addExecutorService(
final Map executorServices,
final String name,
final ExecutorService executorService) {
if (executorService instanceof java.util.concurrent.ForkJoinPool
|| executorService instanceof java.util.concurrent.ThreadPoolExecutor) {
executorServices.put(name, executorService);
} else {
throw new IllegalArgumentException(
"Unsupported ExecutorService type: " + executorService.getClass().getName());
}
}
private static Builder getFileSourceBuilder(final File configurationFile) {
if (configurationFile.getName().toLowerCase(Locale.getDefault()).endsWith(HOCON_FILE_EXTENSION)) {
return new HoconFileSource.Builder()
.setObjectMapper(OBJECT_MAPPER)
.setFile(configurationFile);
}
return new JsonNodeFileSource.Builder()
.setObjectMapper(OBJECT_MAPPER)
.setFile(configurationFile);
}
private static ObjectMapper createMadObjectMapper() {
final ObjectMapper instance = ObjectMapperFactory.createInstance();
instance.registerModule(new PekkoLoggingModule());
return ImmutableObjectMapper.of(instance);
}
private final AggregatorConfiguration _configuration;
private volatile PipelinesLaunchable _pipelinesLaunchable;
private volatile ScheduledExecutorService _jvmMetricsCollector;
private volatile ActorSystem _actorSystem;
private volatile AppShutdown _guiceAppShutdown;
private static final Long INITIAL_DELAY_IN_MILLIS = 0L;
private static final TimeUnit TIME_UNIT = TimeUnit.MILLISECONDS;
private static final ObjectMapper OBJECT_MAPPER = createMadObjectMapper();
private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
private static final Duration SHUTDOWN_TIMEOUT = Duration.create(30, TimeUnit.SECONDS);
private static final Semaphore SHUTDOWN_SEMAPHORE = new Semaphore(0);
private static final Thread SHUTDOWN_THREAD = new ShutdownThread();
private static final String HOCON_FILE_EXTENSION = ".conf";
private static final class PipelinesLaunchable implements Launchable, Runnable {
private PipelinesLaunchable(
final ObjectMapper objectMapper,
final File directory) {
_objectMapper = objectMapper;
_directory = directory;
_fileToPipelineLaunchables = Maps.newConcurrentMap();
}
@Override
public synchronized void launch() {
_pipelinesExecutor = Executors.newSingleThreadScheduledExecutor(runnable -> new Thread(runnable, "PipelineExecutor"));
_pipelinesExecutor.scheduleAtFixedRate(
this,
0, // initial delay
1, // interval
TimeUnit.MINUTES);
}
@Override
public synchronized void shutdown() {
_pipelinesExecutor.shutdown();
try {
_pipelinesExecutor.awaitTermination(10, TimeUnit.SECONDS);
} catch (final InterruptedException e) {
LOGGER.warn("Unable to shutdown pipeline executor", e);
}
_pipelinesExecutor = null;
_fileToPipelineLaunchables.keySet()
.forEach(this::shutdownPipeline);
_fileToPipelineLaunchables.clear();
}
@Override
public void run() {
final boolean exists = _directory.exists() && _directory.isDirectory();
if (exists) {
final Set missingFiles = Sets.newHashSet(_fileToPipelineLaunchables.keySet());
for (final File file : Optional.ofNullable(_directory.listFiles()).orElse(EMPTY_FILE_ARRAY)) {
missingFiles.remove(file);
if (!_fileToPipelineLaunchables.containsKey(file)) {
launchPipeline(file);
}
}
missingFiles.forEach(this::shutdownPipeline);
} else {
_fileToPipelineLaunchables.keySet().forEach(this::shutdownPipeline);
}
}
private void launchPipeline(final File file) {
LOGGER.debug()
.setMessage("Creating pipeline")
.addData("configuration", file)
.log();
final Configurator pipelineConfigurator =
new Configurator<>(Pipeline::new, PipelineConfiguration.class);
final DynamicConfiguration pipelineConfiguration = new DynamicConfiguration.Builder()
.setObjectMapper(_objectMapper)
.addSourceBuilder(getFileSourceBuilder(file))
.addTrigger(
new FileTrigger.Builder()
.setFile(file)
.build())
.addListener(pipelineConfigurator)
.build();
LOGGER.debug()
.setMessage("Launching pipeline")
.addData("pipeline", pipelineConfiguration)
.log();
pipelineConfiguration.launch();
_fileToPipelineLaunchables.put(file, ImmutableList.of(pipelineConfigurator, pipelineConfiguration));
}
private void shutdownPipeline(final File file) {
LOGGER.debug()
.setMessage("Stopping pipeline")
.addData("pipeline", file)
.log();
_fileToPipelineLaunchables.remove(file).forEach(com.arpnetworking.utility.Launchable::shutdown);
}
private final ObjectMapper _objectMapper;
private final File _directory;
private final Map> _fileToPipelineLaunchables;
private ScheduledExecutorService _pipelinesExecutor;
private static final File[] EMPTY_FILE_ARRAY = new File[0];
}
private static final class ShutdownThread extends Thread {
private ShutdownThread() {
super("MADShutdownHook");
}
@Override
public void run() {
LOGGER.info()
.setMessage("Stopping mad")
.log();
// release the main thread waiting for shutdown signal
SHUTDOWN_SEMAPHORE.release();
try {
// wait for it to signal that it has completed shutdown
if (!SHUTDOWN_SEMAPHORE.tryAcquire(SHUTDOWN_TIMEOUT.toSeconds(), TimeUnit.SECONDS)) {
LOGGER.warn()
.setMessage("Shutdown did not complete in a timely manner")
.log();
}
} catch (final InterruptedException e) {
throw new RuntimeException(e);
} finally {
LOGGER.info()
.setMessage("Shutdown complete")
.log();
final LoggerContext context = (LoggerContext) org.slf4j.LoggerFactory.getILoggerFactory();
context.stop();
}
}
}
private static final class MainModule extends AbstractModule {
MainModule(final ActorSystem actorSystem, final MetricsFactory metricsFactory, final AppShutdown shutdown) {
this._actorSystem = actorSystem;
this._metricsFactory = metricsFactory;
this._shutdown = shutdown;
}
@Override
public void configure() {
bind(ActorSystem.class).toInstance(_actorSystem);
bind(MetricsFactory.class).toInstance(_metricsFactory);
bind(LifecycleRegistration.class).toInstance(_shutdown);
}
@Provides
@SuppressFBWarnings("UPM_UNCALLED_PRIVATE_METHOD")
private PeriodicMetrics providePeriodicMetrics(
final MetricsFactory metricsFactory,
final LifecycleRegistration lifecycle) {
final TsdPeriodicMetrics periodicMetrics = new TsdPeriodicMetrics.Builder()
.setMetricsFactory(metricsFactory)
.build();
final ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor(
r -> new Thread(r, "PeriodicMetricsCloser"));
final long offsetMillis = 1250 - (System.currentTimeMillis() % 1000);
executor.scheduleAtFixedRate(periodicMetrics, offsetMillis, 1000, TimeUnit.MILLISECONDS);
// Register to shutdown the executor when the Guice stack is shutdown.
lifecycle.registerShutdown(() -> {
executor.shutdown();
return CompletableFuture.completedFuture(null);
});
return periodicMetrics;
}
private final ActorSystem _actorSystem;
private final MetricsFactory _metricsFactory;
private final AppShutdown _shutdown;
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy