Unverified Commit 3df42159 by Ryan Baxter Committed by Spencer Gibb

Fixes #1429

parent 45e7a088
...@@ -1236,7 +1236,8 @@ To enable it, annotate a Spring Boot main class with ...@@ -1236,7 +1236,8 @@ To enable it, annotate a Spring Boot main class with
service. By convention, a service with the ID "users", will service. By convention, a service with the ID "users", will
receive requests from the proxy located at `/users` (with the prefix receive requests from the proxy located at `/users` (with the prefix
stripped). The proxy uses Ribbon to locate an instance to forward to stripped). The proxy uses Ribbon to locate an instance to forward to
via discovery, and all requests are executed in a hystrix command, so via discovery, and all requests are executed in a
<<hystrix-fallbacks-for-routes, hystrix command>>, so
failures will show up in Hystrix metrics, and once the circuit is open failures will show up in Hystrix metrics, and once the circuit is open
the proxy will not try to contact the service. the proxy will not try to contact the service.
...@@ -1604,6 +1605,61 @@ possible filters that are enabled. If you want to disable one, simply set ...@@ -1604,6 +1605,61 @@ possible filters that are enabled. If you want to disable one, simply set
`org.springframework.cloud.netflix.zuul.filters.post.SendResponseFilter` set `org.springframework.cloud.netflix.zuul.filters.post.SendResponseFilter` set
`zuul.SendResponseFilter.post.disable=true`. `zuul.SendResponseFilter.post.disable=true`.
[[hystrix-fallbacks-for-routes]]
=== Providing Hystrix Fallbacks For Routes
When a circuit for a given route in Zuul is tripped you can provide a fallback response
by creating a bean of type `ZuulFallbackProvider`. Within this bean you need to specify
the route ID the fallback is for and provide a `ClientHttpResponse` to return
as a fallback. Here is a very simple `ZuulFallbackProvider` implementation.
[source,java]
----
class MyFallbackProvider implements ZuulFallbackProvider {
@Override
public String getRoute() {
return "zuulserver";
}
@Override
public ClientHttpResponse fallbackResponse() {
return new ClientHttpResponse() {
@Override
public HttpStatus getStatusCode() throws IOException {
return HttpStatus.OK;
}
@Override
public int getRawStatusCode() throws IOException {
return 200;
}
@Override
public String getStatusText() throws IOException {
return "OK";
}
@Override
public void close() {
}
@Override
public InputStream getBody() throws IOException {
return new ByteArrayInputStream("fallback".getBytes());
}
@Override
public HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.TEXT_HTML);
return headers;
}
};
}
}
----
=== Polyglot support with Sidecar === Polyglot support with Sidecar
Do you have non-jvm languages you want to take advantage of Eureka, Ribbon and Do you have non-jvm languages you want to take advantage of Eureka, Ribbon and
......
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