src-openfeign

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Commit Graph

Author	SHA1	Message	Date
Adrian Cole	122f9a547b	Adds fallback implementation configuration to the `HystrixFeign` builder Fallbacks are known values, which you return when there's an error invoking an http method. For example, you can return a cached result as opposed to raising an error to the caller. To use this feature, pass a safe implementation of your target interface as the last parameter to `HystrixFeign.Builder.target`. Here's an example: ```java // When dealing with fallbacks, it is less tedious to keep interfaces small. interface GitHub { @RequestLine("GET /repos/{owner}/{repo}/contributors") List<String> contributors(@Param("owner") String owner, @Param("repo") String repo); } // This instance will be invoked if there are errors of any kind. GitHub fallback = (owner, repo) -> { if (owner.equals("Netflix") && repo.equals("feign")) { return Arrays.asList("stuarthendren"); // inspired this approach! } else { return Collections.emptyList(); } }; GitHub github = HystrixFeign.builder() ... .target(GitHub.class, "https://api.github.com", fallback); ``` Credit to the idea goes to @stuarthendren!	9 years ago
Christopher Lakey	d1cb196e6e	Add support for rx.Observable and rx.Single return types to Hystrix module	9 years ago
Spencer Gibb	c17756ce3b	add HystrixCommand support fixes gh-189	9 years ago

Author

SHA1

Message

Date

Adrian Cole

122f9a547b

Adds fallback implementation configuration to the `HystrixFeign` builder

Fallbacks are known values, which you return when there's an error invoking an http method.
For example, you can return a cached result as opposed to raising an error to the caller. To use
this feature, pass a safe implementation of your target interface as the last parameter to `HystrixFeign.Builder.target`.

Here's an example:

```java
// When dealing with fallbacks, it is less tedious to keep interfaces small.
interface GitHub {
  @RequestLine("GET /repos/{owner}/{repo}/contributors")
  List<String> contributors(@Param("owner") String owner, @Param("repo") String repo);
}

// This instance will be invoked if there are errors of any kind.
GitHub fallback = (owner, repo) -> {
  if (owner.equals("Netflix") && repo.equals("feign")) {
    return Arrays.asList("stuarthendren"); // inspired this approach!
  } else {
    return Collections.emptyList();
  }
};

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

Credit to the idea goes to @stuarthendren!

9 years ago

Christopher Lakey

d1cb196e6e

Add support for rx.Observable and rx.Single return types to Hystrix module

9 years ago

Spencer Gibb

c17756ce3b

add HystrixCommand support

fixes gh-189

9 years ago

3 Commits (65b1e9ef2c6f2e7372303ff36994c215036301a3)