Admissionwebhook misses faulty regex

[MarkusFlorian79]

Is there an existing issue for this?

• [X] I have searched the existing issues

Kong version ($ kong version)

3.6.1

Current Behavior

Adding following faulty HTTPRoute:

apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:
  name: broken-http-route
  annotations:
    konghq.com/strip-path: "false"
    konghq.com/preserve-host: "false"
    konghq.com/protocols: https
spec:
  hostnames:
    - broken.api-ch-dev.balgroupit.com
  rules:
    - matches:
        - path:
            type: RegularExpression
            value: .*\.do
        - path:
            type: RegularExpression
            value: .*\.css
        - path:
            type: RegularExpression
            value: .*\.woff2
        - path:
            type: RegularExpression
            value: .*\.js
        - path:
            type: RegularExpression
            value: .*\.svg
      backendRefs:
        - name: echo-host-service
          kind: Service
          port: 1027

is not rejected by the AdmissionWebhook while the IngressController discovers the error:

Update route httproute.ch-kong-dev.broken-http-route.0.0 failed: HTTP status 400 (message: "5 schema violations (paths.1: should start with: / (fixed path) or ~/ (regex path); paths.2: should start with: / (fixed path) or ~/ (regex path); paths.3: should start with: / (fixed path) or ~/ (regex path); paths.4: should start with: / (fixed path) or ~/ (regex path); paths.5: should start with: / (fixed path) or ~/ (regex path))")

Expected Behavior

Admissionwebhook rejects the HTTPRoute.

Steps To Reproduce

See current behaviour

Anything else?

No response

[chronolaw]

@randmonkey , could you take a look at this?

[randmonkey]

@MarkusFlorian79 KIC enables validation on HTTPRoute to check if the spec is valid (will not generate invalid Kong configuration) since 2.12. Please check if your KIC version is below 2.12 or admission webhooks are not configured correctly.

[github-actions[bot]]

This issue is marked as stale because it has been open for 14 days with no activity.

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