loco-operator/internal/controller/helper.go

/*
Copyright 2026 LocoStack.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package controller

import (
	"context"

	"github.com/LocoStack/loco-operator/api/v1alpha1"
	corev1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/types"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/handler"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"
)

func ComponentEventHandler(kind string) handler.EventHandler {
	mapFunc := func(ctx context.Context, obj client.Object) []reconcile.Request {
		comp, ok := obj.(*v1alpha1.Component)
		if !ok {
			return nil
		}
		var reqs []reconcile.Request
		for _, dep := range comp.Spec.Dependencies {
			if !dependencyRefMatches(dep, kind) {
				continue
			}
			namespace := dep.Namespace
			if namespace == "" {
				namespace = comp.GetNamespace()
			}
			reqs = append(reqs, reconcile.Request{
				NamespacedName: types.NamespacedName{
					Name:      dep.Name,
					Namespace: namespace,
				},
			})
		}
		return reqs
	}
	return handler.EnqueueRequestsFromMapFunc(mapFunc)
}

func dependencyRefMatches(ref corev1.ObjectReference, kind string) bool {
	if ref.Kind != kind {
		return false
	}
	if ref.APIVersion == "" {
		return true
	}
	gv, err := schema.ParseGroupVersion(ref.APIVersion)
	return err == nil && gv.Group == v1alpha1.GroupVersion.Group
}