Annotation for feign retry

FeignRetryable.java

/**
 * Enable retries on selected Feign methods.
 * <p>
 * <ol>
 * <li>In the feign config class add:
 * <pre>
 * {@code
 * @Bean
 * public Retryer feignRetryer() {
 *     return new AnnotationRetryer(new Retryer.Default());
 * }
 * }
 * </pre>
 * </li>
 * <li>Annotate feign method with @FeignRetryable:
 * <pre>
 * {@code
 *
 * @FeignRetryable
 * @PostMapping("/api/url")
 * ResponseDto callTheApi(@RequestBody RequestDto request);
 * }
 * </pre>
 * </li>
 * </ol>
 * Now only the annotated methods will be retryable according to the delegate Retryer passed to {@link AnnotationRetryer},
 * other methods will not be retryable.
 */
@Retention(RetentionPolicy.RUNTIME)
public @interface FeignRetryable {

    class AnnotationRetryer implements Retryer {

        private final Retryer delegate;

        public AnnotationRetryer(Retryer delegate) {
            this.delegate = delegate;
        }

        @Override
        public void continueOrPropagate(RetryableException e) {
            boolean hasAnnotation =
                    e.request().requestTemplate().methodMetadata().method().getAnnotation(FeignRetryable.class) != null;
            if (hasAnnotation) {
                delegate.continueOrPropagate(e);
            } else {
                throw e;
            }
        }

        @Override
        public Retryer clone() {
            return new AnnotationRetryer(delegate.clone());
        }
    }
}

Thanks for this gist, worked perfectly 👍

Thanks for this solution

I'm using Feign Client with Java Annotations, like: @FeignClient(value="myClient", url="URL", configuration="MyConfig.class").
I've added the @Bean Retryer to MyConfig class and annotated the called method with @FeignRetryer interface.

When I debug this code, e.request().requestTemplate().methodMetadata().method().getAnnotation(FeignRetryable.class) doesn't bring the annotation that I've written to the client method.

Is this related with Spring AOP? Any solutions that you can think of?
EDIT: My bad, found out that a diffrent method was called. Spring AOP works normal.

Thanks for this solution

I'm using Feign Client with Java Annotations, like: @FeignClient(value="myClient", url="URL", configuration="MyConfig.class"). I've added the @Bean Retryer to MyConfig class and annotated the called method with @FeignRetryer interface.

When I debug this code, e.request().requestTemplate().methodMetadata().method().getAnnotation(FeignRetryable.class) doesn't bring the annotation that I've written to the client method.

Is this related with Spring AOP? Any solutions that you can think of? EDIT: My bad, found out that a diffrent method was called. Spring AOP works normal.

happy it worked with you