Spring Boot @Retryable maxAttempts according to exception

I wonder something about Spring Boot @Retryable annotation.

I want to implement @Retryable maxAttemps count according to Exception type, like:

if Exception type is ExceptionA:
@Retryable(value = ExceptionA.class, maxAttempts = 2)
if Exception type is ExceptionB:
@Retryable(value = ExceptionB.class, maxAttempts = 5)

Is it possible to do it with @Retryable annotation, or is there any suggestion?

Not directly; you would have to construct a custom interceptor (RetryInterceptorBuilder) bean and provide its bean name in @Retryable.interceptor.

Use an ExceptionClassifierRetryPolicy to use a different policy for each exception.

EDIT

Here's an example:

@SpringBootApplication
@EnableRetry
public class So64029544Application {

	public static void main(String[] args) {
		SpringApplication.run(So64029544Application.class, args);
	}


	@Bean
	public ApplicationRunner runner(Retryer retryer) {
		return args -> {
			retryer.toRetry("state");
			retryer.toRetry("arg");
		};
	}

	@Bean
	public Object retryInterceptor(Retryer retryer) throws Exception {
		ExceptionClassifierRetryPolicy policy = new ExceptionClassifierRetryPolicy();
		policy.setPolicyMap(Map.of(
                IllegalStateException.class, new SimpleRetryPolicy(2),
				IllegalArgumentException.class, new SimpleRetryPolicy(3)));
		Method recover = retryer.getClass().getDeclaredMethod("recover", Exception.class);
		return RetryInterceptorBuilder.stateless()
				.retryPolicy(policy)
				.backOffOptions(1_000, 1.5, 10_000)
				.recoverer(new RecoverAnnotationRecoveryHandler<>(retryer, recover))
				.build();
	}
}

@Component
class Retryer {

	@Retryable(interceptor = "retryInterceptor")
	public void toRetry(String in) {
		System.out.println(in);
		if ("state".equals(in)) {
			throw new IllegalStateException();
		}
		else {
			throw new IllegalArgumentException();
		}
	}

	@Recover
	public void recover(Exception ex) {
		System.out.println("Recovered from " + ex
				+ ", retry count:" + RetrySynchronizationManager.getContext().getRetryCount());
	}

}

state
state
Recovered from java.lang.IllegalStateException, retry count:2
arg
arg
arg
Recovered from java.lang.IllegalArgumentException, retry count:3