Define how to reflect partial validity of routing rules in the HTTPRoute status #1696
Description
What would you like to be added:
If we have an HTTPRoute resource with some if its routing rules valid, some -- not valid (for example, PathMatchType in HTTPPathMatch is not one of Exact;PathPrefix;RegularExpression), define how to report that in the HTTPRoute status.
Why this is needed:
Current documentation is a bit contradictory:
The HTTPRoute docs say:
// Unknown values here must result in the implementation setting the
// Accepted Condition for the Route to `status: False`, with a
// Reason of `UnsupportedValue`.
However, in GEP-1364, it is mentioned:
HTTPRoute with two rules, one valid and one which specifies a HTTPRequestRedirect filter _and a HTTPURLRewrite filter. Accepted is true, because the valid rule can produce some config in the data plane. We'll need to raise the more specific error condition for an incompatible filter combination as well to make the partial validity clear.
This comes from #1674 and a discussion on Kubernetes Gateway API Slack sig-network-gateway-api https://kubernetes.slack.com/archives/CR0H13KGA/p1675122817360569