In micronaut there are declarative clients:
@Client("http://localhost:5000")
public interface ServiceB {
@Get("/ping")
HttpResponse ping(HttpRequest httpRequest);
}
In my controller class I want to redirect the incoming request to ServiceB
@Controller("/api")
public class ServiceA {
@Inject
private ServiceB serviceB;
@Get("/ping)
HttpResponse pingOtherService(HttpRequest httpRequest){
return serviceB.ping(httpRequest)
}
}
However it seems that ServiceB will never get the request because of the information encoded in the request. How can I forward the request from ServiceA to ServiceB ?
The client can't send and HttpRequest directly. He will build one from the parameters of the client.
I tried to send the request to redirect in the body of the client, but get a stack overflow error : jackson can't convert it to string.
You can't change the URI in the request to send it back unfortunatly, no HttpRequest implementation have a setter on the URI.
If you really want to send the full request (header, body, params...) you can try to configure a proxy.
Else, if you don't have to pass the full request, you can pass through the client what you need :
Client example:
@Client("http://localhost:8080/test")
public interface RedirectClient {
@Get("/redirect")
String redirect(@Header(value = "test") String header);
}
The controller :
@Slf4j
@Controller("/test")
public class RedirectController {
@Inject
private RedirectClient client;
@Get
public String redirect(HttpRequest request){
log.info("headers : {}", request.getHeaders().findFirst("test"));
return client.redirect(request.getHeaders().get("test"));
}
@Get("/redirect")
public String hello(HttpRequest request){
log.info("headers : {}", request.getHeaders().findFirst("test"));
return "Hello from redirect";
}
}
I did it for one header, but you can do it with a body (if not a GET method), for request params, and so on.