Configure error handling and retry for Http.outboundGateway spring dsl - spring-integration

Question

I have a requirement where i need to make a rest call when it fails i have to retry 3 times and depending on the status code received i need perform different action, i couldn't find a proper spring integration dsl example. How to configure the error handler and retry
#Bean
public IntegrationFlow performCreate() {
return IntegrationFlows.from("createFlow")
.handle(Http.outboundGateway("http://localhost:8080/create")
.httpMethod(HttpMethod.GET)
.expectedResponseType(String.class)
.requestFactory(simpleClientHttpRequestFactory())
.errorHandler(??)
)
.log(LoggingHandler.Level.DEBUG, "response", m -> m.getPayload())
.log(LoggingHandler.Level.DEBUG, "response", m -> m.getHeaders())
.get();
}
private SimpleClientHttpRequestFactory simpleClientHttpRequestFactory() {
SimpleClientHttpRequestFactory simpleClientHttpRequestFactory = new SimpleClientHttpRequestFactory();
simpleClientHttpRequestFactory.setReadTimeout(5000);
simpleClientHttpRequestFactory.setConnectTimeout(5000);
return simpleClientHttpRequestFactory;
}

Answer 1

The Java DSL .handle() has a second argument - Consumer<GenericEndpointSpec<?>> and that one can be configured with the:
/**
* Configure a list of {#link Advice} objects to be applied, in nested order, to the
* endpoint's handler. The advice objects are applied only to the handler.
* #param advice the advice chain.
* #return the endpoint spec.
*/
public S advice(Advice... advice) {
One of those advises is in the Spring Integration box - RequestHandlerRetryAdvice: https://docs.spring.io/spring-integration/docs/5.0.4.RELEASE/reference/html/messaging-endpoints-chapter.html#retry-advice
https://docs.spring.io/spring-integration/docs/5.0.4.RELEASE/reference/html/java-dsl.html#java-dsl-endpoints
.handle(Http.outboundGateway("http://localhost:8080/create")
.httpMethod(HttpMethod.GET)
.expectedResponseType(String.class)
.requestFactory(simpleClientHttpRequestFactory()),
e -> e.advice(retryAdvice())
...
#Bean
public RequestHandlerRetryAdvice retryAdvice() {
RequestHandlerRetryAdvice requestHandlerRetryAdvice = new RequestHandlerRetryAdvice();
requestHandlerRetryAdvice.setRecoveryCallback(errorMessageSendingRecoverer());
return requestHandlerRetryAdvice;
}
#Bean
public ErrorMessageSendingRecoverer errorMessageSendingRecoverer() {
return new ErrorMessageSendingRecoverer(recoveryChannel())
}
#Bean
public MessageChannel recoveryChannel() {
return new DirectChannel();
}
#Bean
public IntegrationFlow handleRecovery() {
return IntegrationFlows.from("recoveryChannel")
.log(LoggingHandler.Level.ERROR, "error",
m -> m.getPayload())
.get();
}