Fix: Applications.Core/gateways can hang deploying contour httpproxy route child before root 12259

[gergo-hortobagyi]

Description

This pull request fixes a deployment hang for Applications.Core/gateways that render Contour HTTPProxy route-child resources before the root gateway HTTPProxy.

Contour route-child HTTPProxy resources do not become independently valid until the root HTTPProxy includes them, so Radius should not wait for each route child to report readiness immediately after applying it. This change skips readiness waits for Contour route-child HTTPProxy resources while preserving readiness validation for root Contour HTTPProxy resources.

The change also adds regression coverage for:

• ordering gateway output resources so route-child HTTPProxy resources are applied before the root HTTPProxy
• identifying Contour route-child HTTPProxy resources
• ensuring route-child HTTPProxy resources bypass the readiness waiter
• ensuring root Contour HTTPProxy resources still wait for readiness
• ensuring non-Contour resources named HTTPProxy are not sent through the Contour waiter

Validation performed:

• Deployed the issue repro in a real kind cluster with the branch applications-rp image; the deployment completed and all generated Contour HTTPProxy resources became valid.
• go test -count=1 ./pkg/corerp/renderers/gateway ./pkg/corerp/handlers ./pkg/rp/v1
• make build
• Helm unit tests
• Full ./pkg/... test sweep with arm64 envtest assets
• make lint

Type of change

• This pull request fixes a bug in Radius and has an approved issue (issue link required).
  NOTE: This issue was not approved yet, but it is a production level blocker. The related issue: Applications.Core/gateways can hang deploying Contour HTTPProxy route child before root #12259

Fixes: #12259

Contributor checklist

Please verify that the PR meets the following requirements, where applicable:

• An overview of proposed schema changes is included in a linked GitHub issue.
  • Yes
  • Not applicable
• A design document is added or updated under eng/design-notes/ in this repository, if new APIs are being introduced.
  • Yes
  • Not applicable
• The design document has been reviewed and approved by Radius maintainers/approvers.
  • Yes
  • Not applicable
• A PR for resource-types-contrib is created, if resource types or recipes are affected by the changes in this PR.
  • Yes
  • Not applicable
• A PR for dashboard is created, if the Radius Dashboard is affected by the changes in this PR.
  • Yes
  • Not applicable
• A PR for the documentation repository is created, if the changes in this PR affect the documentation or any user facing updates are made.
  • Yes
  • Not applicable

[Copilot]

Pull request overview

Fixes a deployment hang when applying Applications.Core/gateways resources backed by Contour by ensuring route-child HTTPProxy resources do not block deployment readiness while still validating readiness for the root HTTPProxy.

Changes:

• Skip readiness waiting for Contour route-child HTTPProxy resources; continue waiting for root Contour HTTPProxy readiness.
• Add a Contour-aware guard so non-Contour resources with kind: HTTPProxy bypass the Contour waiter entirely.
• Add regression tests covering output-resource ordering, route-child detection, and waiter behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/corerp/renderers/gateway/render_test.go	Adds a regression test asserting route-child HTTPProxy output resources are ordered before the root gateway HTTPProxy.
pkg/corerp/handlers/kubernetes.go	Updates the Kubernetes handler to only invoke the Contour HTTPProxy waiter for Contour resources, and to skip waits for route-child HTTPProxy resources.
pkg/corerp/handlers/kubernetes_test.go	Adds tests verifying route-child HTTPProxy skips waiting, root HTTPProxy still waits, and non-Contour HTTPProxy bypasses the waiter.
pkg/corerp/handlers/kubernetes_http_proxy_waiter.go	Introduces Contour HTTPProxy/route-child identification helpers and uses them to avoid validating route-child readiness.
pkg/corerp/handlers/kubernetes_http_proxy_waiter_test.go	Adds unit tests for route-child detection and for ensuring root invalid status is still surfaced as an error.