feat: support apisix plugin config

[ronething]

Signed-off-by: ashing [email protected]

Type of change:

• Bugfix
• New feature provided
• Improve performance
• Backport patches
• Documentation
• Refactor
• Chore
• CI/CD or Tests

What this PR does / why we need it:

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

[github-actions]

conformance test report

apiVersion: gateway.networking.k8s.io/v1
date: "2025-06-18T08:21:57Z"
gatewayAPIChannel: standard
gatewayAPIVersion: v1.2.0
implementation:
  contact: null
  organization: APISIX
  project: apisix-ingress-controller
  url: https://github.com/apache/apisix-ingress-controller.git
  version: v2.0.0
kind: ConformanceReport
mode: default
profiles:
- core:
    result: partial
    skippedTests:
    - HTTPRouteHTTPSListener
    statistics:
      Failed: 0
      Passed: 32
      Skipped: 1
  name: GATEWAY-HTTP
  summary: Core tests partially succeeded with 1 test skips.

[github-actions]

conformance test report

apiVersion: gateway.networking.k8s.io/v1
date: "2025-06-18T08:22:29Z"
gatewayAPIChannel: standard
gatewayAPIVersion: v1.2.0
implementation:
  contact: null
  organization: APISIX
  project: apisix-ingress-controller
  url: https://github.com/apache/apisix-ingress-controller.git
  version: v2.0.0
kind: ConformanceReport
mode: default
profiles:
- core:
    failedTests:
    - HTTPRouteCrossNamespace
    result: failure
    skippedTests:
    - HTTPRouteHTTPSListener
    statistics:
      Failed: 1
      Passed: 31
      Skipped: 1
  name: GATEWAY-HTTP
  summary: Core tests failed with 1 test failures.

[Copilot]

Pull Request Overview

This PR adds support for the ApisixPluginConfig CRD throughout the controller stack, enabling plugin configurations to be referenced, indexed, and applied in translated APISIX routes.

• Extend TranslateContext to hold ApisixPluginConfigs and wire them into the translation pipeline
• Refactor the ADC translator (TranslateApisixRoute) to load plugins from both route‐level and PluginConfig resources
• Implement a new ApisixPluginConfigReconciler, register watches, and index routes by PluginConfig references

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/provider/provider.go	Added ApisixPluginConfigs field to TranslateContext
internal/provider/adc/translator/apisixroute.go	Refactored route translation to build timeouts, plugins, etc.
internal/manager/controllers.go	Registered the ApisixPluginConfigReconciler
internal/controller/utils.go	Introduced KindApisixPluginConfig constant
internal/controller/indexer/indexer.go	Added indexer for PluginConfig references
internal/controller/apisixroute_controller.go	Updated watcher and processing to include PluginConfig refs
internal/controller/apisixpluginconfig_controller.go	New reconciliation logic for ApisixPluginConfig

Comments suppressed due to low confidence (2)

internal/controller/indexer/indexer.go:41

• [nitpick] Consider renaming this constant to ApisixPluginConfigIndexRef to clearly indicate it indexes ApisixPluginConfig resources and maintain consistency with other index constants.

	PluginConfigIndexRef      = "pluginConfigRefs"

internal/provider/adc/translator/apisixroute.go:48

• The new translateHTTPRule helper encapsulates critical routing and plugin logic. Consider adding unit tests to validate its behavior across different PluginConfig and timeout scenarios.

func (t *Translator) translateHTTPRule(tctx *provider.TranslateContext, ar *apiv2.ApisixRoute, rule apiv2.ApisixRouteHTTP, ruleIndex int) (*adc.Service, error) {

[dspo]

Suggested change

	if client.IgnoreNotFound(err) == nil {
	pc.Namespace = req.Namespace
	pc.Name = req.Name
	pc.TypeMeta = metav1.TypeMeta{
	Kind: KindApisixPluginConfig,
	APIVersion: apiv2.GroupVersion.String(),
	}
	return ctrl.Result{}, nil
	}
	return ctrl.Result{}, err
	return ctrl.Result{}, client.IgnoreNotFound(err)