Examples of org.springframework.retry.support.RetryTemplate

Package org.springframework.retry.support

Examples of org.springframework.retry.support.RetryTemplate

org.springframework.retry.support.RetryTemplate
Template class that simplifies the execution of operations with retry semantics.
Retryable operations are encapsulated in implementations of the {@link RetryCallback}interface and are executed using one of the supplied execute methods.
By default, an operation is retried if is throws any {@link Exception} or subclass of{@link Exception}. This behaviour can be changed by using the {@link #setRetryPolicy(RetryPolicy)} method.
Also by default, each operation is retried for a maximum of three attempts with no back off in between. This behaviour can be configured using the {@link #setRetryPolicy(RetryPolicy)} and {@link #setBackOffPolicy(BackOffPolicy)}properties. The {@link org.springframework.retry.backoff.BackOffPolicy} controls howlong the pause is between each individual retry attempt.
This class is thread-safe and suitable for concurrent access when executing operations and when performing configuration changes. As such, it is possible to change the number of retries on the fly, as well as the {@link BackOffPolicy} used and no in progressretryable operations will be affected. @author Rob Harrop @author Dave Syer @author Gary Russell @author Artem Bilan

    container.setQueueNames("retry.test.queue");


    StatefulRetryOperationsInterceptorFactoryBean fb = new StatefulRetryOperationsInterceptorFactoryBean();


    // use an external template so we can share his cache
    RetryTemplate retryTemplate = new RetryTemplate();
    RetryContextCache cache = new MapRetryContextCache();
    retryTemplate.setRetryContextCache(cache);
    fb.setRetryOperations(retryTemplate);
    fb.setMessageRecoverer(new RejectAndDontRequeueRecoverer());


    // give him a reference to the retry cache so he can clean it up
    MissingMessageIdAdvice missingIdAdvice = new MissingMessageIdAdvice(cache);

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  public StatefulRetryOperationsInterceptor getObject() {


    StatefulRetryOperationsInterceptor retryInterceptor = new StatefulRetryOperationsInterceptor();
    RetryOperations retryTemplate = getRetryOperations();
    if (retryTemplate == null) {
      retryTemplate = new RetryTemplate();
    }
    retryInterceptor.setRetryOperations(retryTemplate);


    retryInterceptor.setNewItemIdentifier(new NewMethodArgumentsIdentifier() {
      public boolean isNew(Object[] args) {

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        throw new AuthenticationFailureException("foo");
      }
    }).when(mockConnectionFactory).newConnection((ExecutorService) null);


    RabbitTemplate template = new RabbitTemplate(new SingleConnectionFactory(mockConnectionFactory));
    template.setRetryTemplate(new RetryTemplate());
    try {
      template.convertAndSend("foo", "bar", "baz");
    }
    catch (AmqpAuthenticationException e) {
      assertThat(e.getMessage(), containsString("foo"));

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        throw new AuthenticationFailureException("foo");
      }
    }).when(mockConnectionFactory).newConnection((ExecutorService) null);


    RabbitTemplate template = new RabbitTemplate(new SingleConnectionFactory(mockConnectionFactory));
    template.setRetryTemplate(new RetryTemplate());


    final AtomicBoolean recoverInvoked = new AtomicBoolean();


    template.setRecoveryCallback(new RecoveryCallback<Object>() {

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  public RetryOperationsInterceptor getObject() {


    RetryOperationsInterceptor retryInterceptor = new RetryOperationsInterceptor();
    RetryOperations retryTemplate = getRetryOperations();
    if (retryTemplate == null) {
      retryTemplate = new RetryTemplate();
    }
    retryInterceptor.setRetryOperations(retryTemplate);


    final MessageRecoverer messageRecoverer = getMessageRecoverer();
    retryInterceptor.setRecoverer(new MethodInvocationRecoverer<Void>() {

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    assertEquals(3, TestUtils.getPropertyValue(interceptor, "retryOperations.retryPolicy.maxAttempts"));
  }


  @Test
  public void testWithCustomRetryTemplate() {
    RetryOperations retryOperations = new RetryTemplate();
    StatefulRetryOperationsInterceptor interceptor = RetryInterceptorBuilder.stateful()
        .retryOperations(retryOperations)
        .build();
    assertEquals(3, TestUtils.getPropertyValue(interceptor, "retryOperations.retryPolicy.maxAttempts"));
    assertSame(retryOperations, TestUtils.getPropertyValue(interceptor, "retryOperations"));

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