public void startAndWait() throws Exception { Subscriber subscriber = Subscriber.newBuilder(subscriptionName, receiver).build(); ExecutorService pool = Executors.newCachedThreadPool(); subscriber.addListener( new Subscriber.Listener() { public void failed(Subscriber.State from, Throwable failure) { // Handle error. } }, pool); subscriber.startAsync(); // Wait for a stop signal. // In a server, this might be a signal to stop serving. // In this example, the signal is just a dummy Future. // // By default, Subscriber uses daemon threads (see // https://docs.oracle.com/javase/7/docs/api/java/lang/Thread.html). // Consequently, once other threads have terminated, Subscriber will not stop the JVM from // exiting. // If the Subscriber should simply run forever, either use the setExecutorProvider method in // Subscriber.Builder // to use non-daemon threads or run // for (;;) { // Thread.sleep(Long.MAX_VALUE); // } // at the end of main() to previent the main thread from exiting. done.get(); pool.shutdown(); subscriber.stopAsync().awaitTerminated(); }
try { subscriber = Subscriber.newBuilder(subscriptionName, receiver).build(); subscriber.startAsync(); subscriber.stopAsync();
Subscriber.newBuilder( ProjectSubscriptionName.newBuilder() .setProject(projectId) subscriber.startAsync();
private Subscriber startSubscriber(Builder testSubscriberBuilder) throws Exception { Subscriber subscriber = testSubscriberBuilder.build(); subscriber.startAsync().awaitRunning(); return subscriber; }
@Test public void testOpenedChannels() throws Exception { int expectedChannelCount = 1; Subscriber subscriber = startSubscriber(getTestSubscriberBuilder(testReceiver)); assertEquals( expectedChannelCount, fakeSubscriberServiceImpl.waitForOpenedStreams(expectedChannelCount)); subscriber.stopAsync().awaitTerminated(); }
synchronized public void start() { this.subscriber = Subscriber .newBuilder(ProjectSubscriptionName.of(project, subscriptionName), messageReceiver) .setCredentialsProvider(FixedCredentialsProvider.create(credentials)) .build(); subscriber.addListener(new GooglePubsubFailureHandler(this, formatSubscriptionName(project, subscriptionName)), MoreExecutors.directExecutor()); subscriber.startAsync().awaitRunning(); log.info("Google Pubsub subscriber started for {}", formatSubscriptionName(project, subscriptionName)); }
/** * Constructs a new {@link Builder}. * * @param subscription Cloud Pub/Sub subscription to bind the subscriber to * @param receiver an implementation of {@link MessageReceiver} used to process the received * messages */ public static Builder newBuilder(ProjectSubscriptionName subscription, MessageReceiver receiver) { return newBuilder(subscription.toString(), receiver); }
@Override public ListenableFuture<RunResult> doRun() { synchronized (this) { if (subscriber.isRunning()) { return Futures.immediateFuture(RunResult.empty()); } if (shuttingDown) { return Futures.immediateFailedFuture( new IllegalStateException("the task is shutting down")); } try { subscriber.startAsync().awaitRunning(); } catch (Exception e) { log.error("Fatal error from subscriber.", e); subscriber = Subscriber.defaultBuilder(this.subscription, this).build(); return Futures.immediateFailedFuture(e); } return Futures.immediateFuture(RunResult.empty()); } }
public static GooglePubsubSubscriber buildSubscriber(GooglePubsubProperties.GooglePubsubSubscription subscription, PubsubMessageHandler pubsubMessageHandler) { Subscriber subscriber; String subscriptionName = subscription.getSubscriptionName(); String project = subscription.getProject(); String jsonPath = subscription.getJsonPath(); GooglePubsubMessageReceiver messageReceiver = new GooglePubsubMessageReceiver(subscription.getAckDeadlineSeconds(), subscription.getName(), pubsubMessageHandler, subscription.getTemplatePath()); if (jsonPath != null && !jsonPath.isEmpty()) { Credentials credentials = null; try { credentials = ServiceAccountCredentials.fromStream(new FileInputStream(jsonPath)); } catch (IOException e) { log.error("Could not import Google Pubsub json credentials: {}", e.getMessage()); } subscriber = Subscriber .defaultBuilder(SubscriptionName.create(project, subscriptionName), messageReceiver) .setCredentialsProvider(FixedCredentialsProvider.create(credentials)) .setMaxAckExtensionPeriod(Duration.ofSeconds(0)) .build(); } else { subscriber = Subscriber.defaultBuilder(SubscriptionName.create(project, subscriptionName), messageReceiver).build(); } subscriber.addListener(new GooglePubsubFailureHandler(formatSubscriptionName(project, subscriptionName)), MoreExecutors.directExecutor()); return new GooglePubsubSubscriber(subscription.getName(), subscriptionName, project, subscriber); }
private Subscriber createSubscriberWithErrorListener(Subscriber subscriber) throws Exception { // [START pubsub_subscriber_error_listener] subscriber.addListener( new Subscriber.Listener() { public void failed(Subscriber.State from, Throwable failure) { // Handle error. } }, MoreExecutors.directExecutor()); // [END pubsub_subscriber_error_listener] return subscriber; }
private CPSSubscriberTask(StartRequest request) { super(request, "gcloud", MetricsHandler.MetricName.END_TO_END_LATENCY); this.subscription = SubscriptionName.create(request.getProject(), request.getPubsubOptions().getSubscription()); try { this.subscriber = Subscriber.defaultBuilder(this.subscription, this) .setParallelPullCount(Runtime.getRuntime().availableProcessors() * 5) .build(); } catch (Exception e) { throw new RuntimeException(e); } }
Subscriber.newBuilder( ProjectSubscriptionName.newBuilder() .setProject(projectId) subscriber.startAsync();
subscriber = Subscriber.newBuilder(subName, receiver).build(); subscriber.startAsync().awaitRunning(); subscriber.stopAsync();
@Override @Deprecated public Subscriber subscribe(String subscription, MessageReceiver messageReceiver) { Assert.hasText(subscription, "The subscription can't be null or empty."); Assert.notNull(messageReceiver, "The messageReceiver can't be null."); Subscriber subscriber = this.subscriberFactory.createSubscriber(subscription, messageReceiver); subscriber.startAsync(); return subscriber; }
@Test public void testFailedChannel_recoverableError_channelReopened() throws Exception { int expectedChannelCount = 1; Subscriber subscriber = startSubscriber( getTestSubscriberBuilder(testReceiver) .setSystemExecutorProvider( InstantiatingExecutorProvider.newBuilder().setExecutorThreadCount(1).build())); // Recoverable error fakeSubscriberServiceImpl.sendError(new StatusException(Status.INTERNAL)); assertEquals(1, fakeSubscriberServiceImpl.waitForClosedStreams(1)); assertEquals( expectedChannelCount, fakeSubscriberServiceImpl.waitForOpenedStreams(expectedChannelCount)); subscriber.stopAsync().awaitTerminated(); }
private Subscriber createSubscriberWithCustomCredentials() throws Exception { // [START pubsub_subscriber_custom_credentials] CredentialsProvider credentialsProvider = FixedCredentialsProvider.create( ServiceAccountCredentials.fromStream(new FileInputStream("credentials.json"))); Subscriber subscriber = Subscriber.newBuilder(subscriptionName, receiver) .setCredentialsProvider(credentialsProvider) .build(); // [END pubsub_subscriber_custom_credentials] return subscriber; }
Subscriber subscriber = null; try { subscriber = Subscriber.newBuilder(subscription, receiver).build(); subscriber.addListener( new Subscriber.Listener() { @Override subscriber.startAsync().awaitRunning(); } finally { if (subscriber != null) { subscriber.stopAsync().awaitTerminated();
Subscriber.newBuilder( ProjectSubscriptionName.newBuilder() .setProject(projectId) subscriber.startAsync();
/** Receive messages over a subscription. */ public static void main(String... args) throws Exception { // set subscriber id, eg. my-sub String subscriptionId = args[0]; ProjectSubscriptionName subscriptionName = ProjectSubscriptionName.of( PROJECT_ID, subscriptionId); Subscriber subscriber = null; try { // create a subscriber bound to the asynchronous message receiver subscriber = Subscriber.newBuilder(subscriptionName, new MessageReceiverExample()).build(); subscriber.startAsync().awaitRunning(); // Continue to listen to messages while (true) { PubsubMessage message = messages.take(); System.out.println("Message Id: " + message.getMessageId()); System.out.println("Data: " + message.getData().toStringUtf8()); } } finally { if (subscriber != null) { subscriber.stopAsync(); } } } }
@Override @Deprecated public Subscriber subscribe(String subscription, MessageReceiver messageReceiver) { Assert.hasText(subscription, "The subscription can't be null or empty."); Assert.notNull(messageReceiver, "The messageReceiver can't be null."); Subscriber subscriber = this.subscriberFactory.createSubscriber(subscription, messageReceiver); subscriber.startAsync(); return subscriber; }