Ability to replace trailing slash with replacePrefixMatch

[tonygilkerson]

I have what I think is a simple use case and I don't see how to do with GatewayAPI. I am trying to figure out if need to open a bug issue or not.

I want requests to /api/foo, /api/bar and /api/etc to be rewritten as /foo, /bar, /etc

I know I could do it with three rules and I tried that but my app as alot of endpoints and eventually I got an error for too many rules. I feel like I should be able to do it with the yaml below but instead the trailing / in PathPrefix is dropped and what I end up with is request to //foo, //bar and //etc

apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: myroute
spec:
  hostnames:
  - mydomain.com
  parentRefs:
  - group: gateway.networking.k8s.io
    kind: Gateway
    name: apps
    namespace: istio-system
  rules:
  - backendRefs:
    - kind: Service
      name: myapi
      port: 8080
    filters:
    - type: URLRewrite
      urlRewrite:
        path:
          replacePrefixMatch: /
          type: ReplacePrefixMatch
    matches:
    - path:
        type: PathPrefix
        value: /api/

[robscott]

Agree this would be very useful, x-ref #1954 which is intended to be a broader issue tracking the ability to drop a trailing slash via redirect.