I am trying to use a ZuulFilter in a simple spring-cloud-Netflix Api gateway (reverse proxy) in order to authenticate requests against a custom authentication provider (via Rest call).
The Filter should reject unauthorized requests with a 401 and don't pass those requests further down to the proxied services.
Is that even possible for a ZuulFilter? I did not find documentation, example or something in Zuuls api.
Any suggestions?
I got this to work, took some digging. Make sure your request isn't cached already. Just call this method from your run() method inside your ZuulFilter.
/**
* Reports an error message given a response body and code.
*
* @param body
* @param code
*/
private void setFailedRequest(String body, int code) {
log.debug("Reporting error ({}): {}", code, body);
RequestContext ctx = RequestContext.getCurrentContext();
ctx.setResponseStatusCode(code);
if (ctx.getResponseBody() == null) {
ctx.setResponseBody(body);
ctx.setSendZuulResponse(false);
}
}
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