Examples with RetryListener cn.taketoday.retry.RetryListener used on opensource projects

Example 1 with RetryListener

use of cn.taketoday.retry.RetryListener in project today-infrastructure by TAKETODAY.

the class StatefulRetryOperationsInterceptorTests method setUp.

@BeforeEach
public void setUp() throws Exception {
    interceptor = new StatefulRetryOperationsInterceptor();
    retryTemplate.registerListener(new RetryListener() {

        @Override
        public <T, E extends Throwable> void close(RetryContext context, RetryCallback<T, E> callback, Throwable throwable) {
            StatefulRetryOperationsInterceptorTests.this.context = context;
        }
    });
    interceptor.setRetryOperations(retryTemplate);
    service = ProxyFactory.getProxy(Service.class, new SingletonTargetSource(new ServiceImpl()));
    transformer = ProxyFactory.getProxy(Transformer.class, new SingletonTargetSource(new TransformerImpl()));
    count = 0;
}

Example 2 with RetryListener

use of cn.taketoday.retry.RetryListener in project today-infrastructure by TAKETODAY.

the class RetryTemplateBuilder method build.

/* ---------------- Building -------------- */
/**
 * Finish configuration and build resulting {@link RetryTemplate}. For default
 * behaviour and concurrency note see class-level doc of {@link RetryTemplateBuilder}.
 * The {@code retryPolicy} of the returned {@link RetryTemplate} is always an instance
 * of {@link CompositeRetryPolicy}, that consists of one base policy, and of
 * {@link BinaryExceptionClassifierRetryPolicy}. The motivation is: whatever base
 * policy we use, exception classification is extremely recommended.
 *
 * @return new instance of {@link RetryTemplate}
 */
public RetryTemplate build() {
    RetryTemplate retryTemplate = new RetryTemplate();
    // Exception classifier
    BinaryExceptionClassifier exceptionClassifier = classifierBuilder != null ? classifierBuilder.build() : BinaryExceptionClassifier.defaultClassifier();
    if (this.baseRetryPolicy == null) {
        this.baseRetryPolicy = new MaxAttemptsRetryPolicy();
    }
    CompositeRetryPolicy finalPolicy = new CompositeRetryPolicy();
    finalPolicy.setPolicies(new RetryPolicy[] { baseRetryPolicy, new BinaryExceptionClassifierRetryPolicy(exceptionClassifier) });
    retryTemplate.setRetryPolicy(finalPolicy);
    if (this.backOffPolicy == null) {
        this.backOffPolicy = new NoBackOffPolicy();
    }
    retryTemplate.setBackOffPolicy(this.backOffPolicy);
    if (this.listeners != null) {
        retryTemplate.setListeners(this.listeners.toArray(new RetryListener[0]));
    }
    return retryTemplate;
}

Example 3 with RetryListener

use of cn.taketoday.retry.RetryListener in project today-infrastructure by TAKETODAY.

the class RetryListenerTests method testOpenCanVetoRetry.

@Test
public void testOpenCanVetoRetry() throws Throwable {
    template.registerListener(new RetryListener() {

        public <T, E extends Throwable> boolean open(RetryContext context, RetryCallback<T, E> callback) {
            list.add("1");
            return false;
        }
    });
    try {
        template.execute(new RetryCallback<String, Exception>() {

            public String doWithRetry(RetryContext context) throws Exception {
                count++;
                return null;
            }
        });
        fail("Expected TerminatedRetryException");
    } catch (TerminatedRetryException e) {
    // expected
    }
    assertEquals(0, count);
    assertEquals(1, list.size());
    assertEquals("1", list.get(0));
}

Example 4 with RetryListener

use of cn.taketoday.retry.RetryListener in project today-framework by TAKETODAY.

the class RetryTemplateBuilder method build.

/* ---------------- Building -------------- */
/**
 * Finish configuration and build resulting {@link RetryTemplate}. For default
 * behaviour and concurrency note see class-level doc of {@link RetryTemplateBuilder}.
 * The {@code retryPolicy} of the returned {@link RetryTemplate} is always an instance
 * of {@link CompositeRetryPolicy}, that consists of one base policy, and of
 * {@link BinaryExceptionClassifierRetryPolicy}. The motivation is: whatever base
 * policy we use, exception classification is extremely recommended.
 *
 * @return new instance of {@link RetryTemplate}
 */
public RetryTemplate build() {
    RetryTemplate retryTemplate = new RetryTemplate();
    // Exception classifier
    BinaryExceptionClassifier exceptionClassifier = classifierBuilder != null ? classifierBuilder.build() : BinaryExceptionClassifier.defaultClassifier();
    if (this.baseRetryPolicy == null) {
        this.baseRetryPolicy = new MaxAttemptsRetryPolicy();
    }
    CompositeRetryPolicy finalPolicy = new CompositeRetryPolicy();
    finalPolicy.setPolicies(new RetryPolicy[] { baseRetryPolicy, new BinaryExceptionClassifierRetryPolicy(exceptionClassifier) });
    retryTemplate.setRetryPolicy(finalPolicy);
    if (this.backOffPolicy == null) {
        this.backOffPolicy = new NoBackOffPolicy();
    }
    retryTemplate.setBackOffPolicy(this.backOffPolicy);
    if (this.listeners != null) {
        retryTemplate.setListeners(this.listeners.toArray(new RetryListener[0]));
    }
    return retryTemplate;
}

Example 5 with RetryListener

use of cn.taketoday.retry.RetryListener in project today-framework by TAKETODAY.

the class RetryTemplateBuilderTests method testBasicCustomization.

@Test
public void testBasicCustomization() {
    RetryListener listener1 = mock(RetryListener.class);
    RetryListener listener2 = mock(RetryListener.class);
    RetryTemplate template = RetryTemplate.builder().maxAttempts(10).exponentialBackoff(99, 1.5, 1717).retryOn(IOException.class).retryOn(Collections.<Class<? extends Throwable>>singletonList(IllegalArgumentException.class)).traversingCauses().withListener(listener1).withListeners(Collections.singletonList(listener2)).build();
    PolicyTuple policyTuple = PolicyTuple.extractWithAsserts(template);
    BinaryExceptionClassifier classifier = policyTuple.exceptionClassifierRetryPolicy.getExceptionClassifier();
    Assert.assertTrue(classifier.classify(new FileNotFoundException()));
    Assert.assertTrue(classifier.classify(new IllegalArgumentException()));
    Assert.assertFalse(classifier.classify(new RuntimeException()));
    Assert.assertFalse(classifier.classify(new OutOfMemoryError()));
    Assert.assertTrue(policyTuple.baseRetryPolicy instanceof MaxAttemptsRetryPolicy);
    Assert.assertEquals(10, ((MaxAttemptsRetryPolicy) policyTuple.baseRetryPolicy).getMaxAttempts());
    List<RetryListener> listeners = Arrays.asList(getPropertyValue(template, "listeners", RetryListener[].class));
    Assert.assertEquals(2, listeners.size());
    Assert.assertTrue(listeners.contains(listener1));
    Assert.assertTrue(listeners.contains(listener2));
    Assert.assertTrue(getPropertyValue(template, "backOffPolicy") instanceof ExponentialBackOffPolicy);
}