ServiceBusClientBuilder.ServiceBusProcessorClientBuilder Classe

Générateur de création ServiceBusProcessorClient pour consommer des messages à partir d’une entité Service Bus. ServiceBusProcessorClient fournit un mécanisme basé sur l’envoi (push) qui notifie le rappel de traitement du message lorsqu’un message est reçu ou le handle d’erreur lorsqu’une erreur est observée. Pour créer un instance, par conséquent, la configuration des deux rappels - processMessage(Consumer<ServiceBusReceivedMessageContext> processMessage) et processError(Consumer<ServiceBusErrorContext> processError) sont nécessaires. Par défaut, un ServiceBusProcessorClient est configuré avec des fonctionnalités de saisie semi-automatique et de renouvellement de verrouillage automatique.

Exemple de code pour instancier un client processeur et recevoir en mode PeekLock

// Function that gets called whenever a message is received.
 Consumer<ServiceBusReceivedMessageContext> processMessage = context -> {
     final ServiceBusReceivedMessage message = context.getMessage();
     // Randomly complete or abandon each message. Ideally, in real-world scenarios, if the business logic
     // handling message reaches desired state such that it doesn't require Service Bus to redeliver
     // the same message, then context.complete() should be called otherwise context.abandon().
     final boolean success = Math.random() < 0.5;
     if (success) {
         try {
             context.complete();
         } catch (RuntimeException error) {
             System.out.printf("Completion of the message %s failed.%n Error: %s%n",
                 message.getMessageId(), error);
         }
     } else {
         try {
             context.abandon();
         } catch (RuntimeException error) {
             System.out.printf("Abandoning of the message %s failed.%nError: %s%n",
                 message.getMessageId(), error);
         }
     }
 };

 // Sample code that gets called if there's an error
 Consumer<ServiceBusErrorContext> processError = errorContext -> {
     if (errorContext.getException() instanceof ServiceBusException) {
         ServiceBusException exception = (ServiceBusException) errorContext.getException();

         System.out.printf("Error source: %s, reason %s%n", errorContext.getErrorSource(),
             exception.getReason());
     } else {
         System.out.printf("Error occurred: %s%n", errorContext.getException());
     }
 };

 TokenCredential tokenCredential = new DefaultAzureCredentialBuilder().build();

 // Create the processor client via the builder and its sub-builder
 // 'fullyQualifiedNamespace' will look similar to "{your-namespace}.servicebus.windows.net"
 ServiceBusProcessorClient processorClient = new ServiceBusClientBuilder()
     .credential(fullyQualifiedNamespace, tokenCredential)
     .processor()
     .queueName(queueName)
     .receiveMode(ServiceBusReceiveMode.PEEK_LOCK)
     .disableAutoComplete()  // Make sure to explicitly opt in to manual settlement (e.g. complete, abandon).
     .processMessage(processMessage)
     .processError(processError)
     .disableAutoComplete()
     .buildProcessorClient();

 // Starts the processor in the background. Control returns immediately.
 processorClient.start();

 // Stop processor and dispose when done processing messages.
 processorClient.stop();
 processorClient.close();

Exemple de code pour instancier un client de processeur et recevoir en mode ReceiveAndDelete

// Function that gets called whenever a message is received.
 Consumer<ServiceBusReceivedMessageContext> processMessage = context -> {
     final ServiceBusReceivedMessage message = context.getMessage();
     System.out.printf("Processing message. Session: %s, Sequence #: %s. Contents: %s%n",
         message.getSessionId(), message.getSequenceNumber(), message.getBody());
 };

 // Sample code that gets called if there's an error
 Consumer<ServiceBusErrorContext> processError = errorContext -> {
     if (errorContext.getException() instanceof ServiceBusException) {
         ServiceBusException exception = (ServiceBusException) errorContext.getException();

         System.out.printf("Error source: %s, reason %s%n", errorContext.getErrorSource(),
             exception.getReason());
     } else {
         System.out.printf("Error occurred: %s%n", errorContext.getException());
     }
 };

 TokenCredential tokenCredential = new DefaultAzureCredentialBuilder().build();

 // Create the processor client via the builder and its sub-builder
 // 'fullyQualifiedNamespace' will look similar to "{your-namespace}.servicebus.windows.net"
 // 'disableAutoComplete()' will opt in to manual settlement (e.g. complete, abandon).
 ServiceBusProcessorClient processorClient = new ServiceBusClientBuilder()
     .credential(fullyQualifiedNamespace, tokenCredential)
     .processor()
     .queueName(queueName)
     .receiveMode(ServiceBusReceiveMode.RECEIVE_AND_DELETE)
     .processMessage(processMessage)
     .processError(processError)
     .disableAutoComplete()
     .buildProcessorClient();

 // Starts the processor in the background. Control returns immediately.
 processorClient.start();

 // Stop processor and dispose when done processing messages.
 processorClient.stop();
 processorClient.close();