HystrixCommand Annotation does not work when used to wrap Spring Integration Gateway Calls

Question

I want to add a fallback to my Gateway call in Spring Integration Application.

I have wrapped the call to the gateway in a method with the @HystrixCommand annotation and provided the name of the fallback method in fallbackMethod attribute.

@HystrixCommand(fallbackMethod = "getMockData")
public String gatewayCallGetMessage(String name) {
   return serviceGateway.getMessage(name);
}

public String getMockData(String name) {
  return "mock data";
}

I have also defined the fallback method in same class.

My Gateway interface is as below,

@MessagingGateway
public interface HystrixServiceGateway {

    @Gateway(requestChannel = "get.request.channel", replyChannel = "reply.channel")
    String getMessage(String name);

}

I have spring-cloud-starter-hystrix dependency in the classpath/pom.xml. Also, I have @EnableHystrix annotation in my Spring Boot Application class as below.

@EnableHystrix
public class HystrixIntegrationApplication {

...
}

But, when the service is down the gateway call does not go through but the fallback method is not getting executed.

I have shared the code I used to reproduce my issue is as below, https://github.com/sri420/hystrix-integration-demo

If anyone has faced a similar issue and know of a way address it , please let me know.

Davin Davin · Accepted Answer · 2018-04-15T21:00:10

The method gatewayCallGetMessage is being called from getByName which is in the same class. Methods with @HystrixCommand can not be called from within the same class.

As discussed in the answers to this question this is a limitation of Spring's AOP.

HystrixCommand Annotation does not work when used to wrap Spring Integration Gateway Calls

1 Answers