Java Code Examples for io.github.resilience4j.retry.Retry#decorateCheckedRunnable()

The following examples show how to use io.github.resilience4j.retry.Retry#decorateCheckedRunnable() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: EventPublisherTest.java    From resilience4j with Apache License 2.0 6 votes vote down vote up 
@Test
public void shouldReturnAfterThreeAttempts() {
    willThrow(new HelloWorldException()).given(helloWorldService).sayHelloWorld();
    Retry retry = Retry.ofDefaults("id");
    TestSubscriber<RetryEvent.Type> testSubscriber = toFlowable(retry.getEventPublisher())
        .map(RetryEvent::getEventType)
        .test();
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    then(helloWorldService).should(times(3)).sayHelloWorld();
    assertThat(result.isFailure()).isTrue();
    assertThat(result.failed().get()).isInstanceOf(HelloWorldException.class);
    assertThat(sleptTime).isEqualTo(RetryConfig.DEFAULT_WAIT_DURATION * 2);
    testSubscriber.assertValueCount(3)
        .assertValues(RetryEvent.Type.RETRY, RetryEvent.Type.RETRY, RetryEvent.Type.ERROR);
}
Example 2
Source File: EventPublisherTest.java    From resilience4j with Apache License 2.0 6 votes vote down vote up 
@Test
public void shouldReturnAfterTwoAttempts() {
    willThrow(new HelloWorldException()).willDoNothing().given(helloWorldService)
        .sayHelloWorld();
    Retry retry = Retry.ofDefaults("id");
    TestSubscriber<RetryEvent.Type> testSubscriber = toFlowable(retry.getEventPublisher())
        .map(RetryEvent::getEventType)
        .test();
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    then(helloWorldService).should(times(2)).sayHelloWorld();
    assertThat(result.isSuccess()).isTrue();
    assertThat(sleptTime).isEqualTo(RetryConfig.DEFAULT_WAIT_DURATION);
    testSubscriber.assertValueCount(2)
        .assertValues(RetryEvent.Type.RETRY, RetryEvent.Type.SUCCESS);
}
Example 3
Source File: EventPublisherTest.java    From resilience4j with Apache License 2.0 6 votes vote down vote up 
@Test
public void shouldIgnoreError() {
    willThrow(new HelloWorldException()).willDoNothing().given(helloWorldService)
        .sayHelloWorld();
    RetryConfig config = RetryConfig.custom()
        .retryOnException(t -> t instanceof IOException)
        .maxAttempts(3).build();
    Retry retry = Retry.of("id", config);
    TestSubscriber<RetryEvent.Type> testSubscriber = toFlowable(retry.getEventPublisher())
        .map(RetryEvent::getEventType)
        .test();
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    then(helloWorldService).should().sayHelloWorld();
    assertThat(result.isFailure()).isTrue();
    assertThat(sleptTime).isEqualTo(0);
    testSubscriber.assertValueCount(1).assertValues(RetryEvent.Type.IGNORED_ERROR);
}
Example 4
Source File: RunnableRetryTest.java    From resilience4j with Apache License 2.0 6 votes vote down vote up 
@Test
public void shouldReturnAfterOneAttemptAndIgnoreException() {
    willThrow(new HelloWorldException()).given(helloWorldService).sayHelloWorld();
    RetryConfig config = RetryConfig.custom()
        .retryOnException(throwable -> Match(throwable).of(
            Case($(Predicates.instanceOf(HelloWorldException.class)), false),
            Case($(), true)))
        .build();
    Retry retry = Retry.of("id", config);
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    // because the exception should be rethrown immediately
    then(helloWorldService).should().sayHelloWorld();
    assertThat(result.isFailure()).isTrue();
    assertThat(result.failed().get()).isInstanceOf(HelloWorldException.class);
    assertThat(sleptTime).isEqualTo(0);
}
Example 5
Source File: RunnableRetryTest.java    From resilience4j with Apache License 2.0 6 votes vote down vote up 
@Test
public void shouldTakeIntoAccountBackoffFunction() {
    willThrow(new HelloWorldException()).given(helloWorldService).sayHelloWorld();
    RetryConfig config = RetryConfig
        .custom()
        .intervalFunction(IntervalFunction.of(Duration.ofMillis(500), x -> x * x))
        .build();
    Retry retry = Retry.of("id", config);
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try.run(retryableRunnable);

    then(helloWorldService).should(times(3)).sayHelloWorld();
    assertThat(sleptTime).isEqualTo(
        RetryConfig.DEFAULT_WAIT_DURATION +
            RetryConfig.DEFAULT_WAIT_DURATION * RetryConfig.DEFAULT_WAIT_DURATION);
}
Example 6
Source File: ExampleIntegrationTest.java    From java-docs-samples with Apache License 2.0 5 votes vote down vote up 
@Test
public void helloPubSub_shouldRunWithFunctionsFramework() throws Throwable {
  String functionUrl = BASE_URL + "/helloPubsub"; // URL to your locally-running function

  // Initialize constants
  String name = UUID.randomUUID().toString();
  String nameBase64 = Base64.getEncoder().encodeToString(name.getBytes(StandardCharsets.UTF_8));

  String jsonStr = gson.toJson(Map.of("data", Map.of("data", nameBase64)));

  HttpPost postRequest =  new HttpPost(URI.create(functionUrl));
  postRequest.setEntity(new StringEntity(jsonStr));

  // The Functions Framework Maven plugin process takes time to start up
  // Use resilience4j to retry the test HTTP request until the plugin responds
  RetryRegistry registry = RetryRegistry.of(RetryConfig.custom()
      .maxAttempts(8)
      .retryExceptions(HttpHostConnectException.class)
      .intervalFunction(IntervalFunction.ofExponentialBackoff(200, 2))
      .build());
  Retry retry = registry.retry("my");

  // Perform the request-retry process
  CheckedRunnable retriableFunc = Retry.decorateCheckedRunnable(
      retry, () -> client.execute(postRequest));
  retriableFunc.run();

  // Get Functions Framework plugin process' stdout
  InputStream stdoutStream = emulatorProcess.getErrorStream();
  ByteArrayOutputStream stdoutBytes = new ByteArrayOutputStream();
  stdoutBytes.write(stdoutStream.readNBytes(stdoutStream.available()));

  // Verify desired name value is present
  assertThat(stdoutBytes.toString(StandardCharsets.UTF_8)).contains(
      String.format("Hello %s!", name));
}
Example 7
Source File: ExampleIntegrationTest.java    From java-docs-samples with Apache License 2.0 5 votes vote down vote up 
@Test
public void helloGcs_shouldRunWithFunctionsFramework() throws Throwable {
  String functionUrl = BASE_URL + "/helloGcs"; // URL to your locally-running function

  // Initialize constants
  String name = UUID.randomUUID().toString();
  String jsonStr = gson.toJson(Map.of(
      "data", Map.of(
          "name", name, "resourceState", "exists", "metageneration", 1),
      "context", Map.of(
          "eventType", "google.storage.object.finalize")
  ));

  HttpPost postRequest =  new HttpPost(URI.create(functionUrl));
  postRequest.setEntity(new StringEntity(jsonStr));

  // The Functions Framework Maven plugin process takes time to start up
  // Use resilience4j to retry the test HTTP request until the plugin responds
  RetryRegistry registry = RetryRegistry.of(RetryConfig.custom()
      .maxAttempts(8)
      .retryExceptions(HttpHostConnectException.class)
      .intervalFunction(IntervalFunction.ofExponentialBackoff(200, 2))
      .build());
  Retry retry = registry.retry("my");

  // Perform the request-retry process
  CheckedRunnable retriableFunc = Retry.decorateCheckedRunnable(
      retry, () -> client.execute(postRequest));
  retriableFunc.run();

  // Get Functions Framework plugin process' stdout
  InputStream stdoutStream = emulatorProcess.getErrorStream();
  ByteArrayOutputStream stdoutBytes = new ByteArrayOutputStream();
  stdoutBytes.write(stdoutStream.readNBytes(stdoutStream.available()));

  // Verify desired name value is present
  assertThat(stdoutBytes.toString(StandardCharsets.UTF_8)).contains(
      String.format("File %s uploaded.", name));
}
Example 8
Source File: RunnableRetryTest.java    From resilience4j with Apache License 2.0 5 votes vote down vote up 
@Test
public void shouldReturnAfterThreeAttempts() {
    willThrow(new HelloWorldException()).given(helloWorldService).sayHelloWorld();
    Retry retry = Retry.ofDefaults("id");
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    then(helloWorldService).should(times(3)).sayHelloWorld();
    assertThat(result.isFailure()).isTrue();
    assertThat(result.failed().get()).isInstanceOf(HelloWorldException.class);
    assertThat(sleptTime).isEqualTo(RetryConfig.DEFAULT_WAIT_DURATION * 2);
}
Example 9
Source File: RunnableRetryTest.java    From resilience4j with Apache License 2.0 5 votes vote down vote up 
@Test
public void shouldReturnAfterOneAttempt() {
    willThrow(new HelloWorldException()).given(helloWorldService).sayHelloWorld();
    RetryConfig config = RetryConfig.custom().maxAttempts(1).build();
    Retry retry = Retry.of("id", config);
    CheckedRunnable retryableRunnable = Retry
        .decorateCheckedRunnable(retry, helloWorldService::sayHelloWorld);

    Try<Void> result = Try.run(retryableRunnable);

    then(helloWorldService).should().sayHelloWorld();
    assertThat(result.isFailure()).isTrue();
    assertThat(result.failed().get()).isInstanceOf(HelloWorldException.class);
    assertThat(sleptTime).isEqualTo(0);
}
Example 10
Source File: Decorators.java    From resilience4j with Apache License 2.0 4 votes vote down vote up 
public DecorateCheckedRunnable withRetry(Retry retryContext) {
    runnable = Retry.decorateCheckedRunnable(retryContext, runnable);
    return this;
}