feign.hystrix

Interface FallbackFactory<T>

Type Parameters:

T - the feign interface type

All Known Implementing Classes:

FallbackFactory.Default

public interface FallbackFactory<T>

Used to control the fallback given its cause. Ex.

 
 // This instance will be invoked if there are errors of any kind.
 FallbackFactory<GitHub> fallbackFactory = cause -> (owner, repo) -> {
   if (cause instanceof FeignException && ((FeignException) cause).status() == 403) {
     return Collections.emptyList();
   } else {
     return Arrays.asList("yogi");
   }
 };

 GitHub github = HystrixFeign.builder()
                             ...
                             .target(GitHub.class, "https://api.github.com", fallbackFactory);
 
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	FallbackFactory.Default<T> Returns a constant fallback after logging the cause to FINE level.

Method Summary

Modifier and Type	Method and Description
T	create(Throwable cause) Returns an instance of the fallback appropriate for the given cause

Method Detail

create

T create(Throwable cause)

Returns an instance of the fallback appropriate for the given cause

Parameters:

cause - corresponds to AbstractCommand.getExecutionException() often, but not always an instance of FeignException.