Refactor controller code

cmd/main.go

@@ -20,6 +20,7 @@ import (
 	"crypto/tls"
 	"flag"
 	_ "kumquat/renderer/cue"
+	"kumquat/repository"
 	"os"
 
 	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
@@ -150,11 +151,17 @@ func main() {
 		setupLog.Error(err, "unable to create dynamic k8s client")
 		os.Exit(1)
 	}
+	rep, err := repository.NewSQLiteRepository()
+	if err != nil {
+		setupLog.Error(err, "unable to create repository")
+		os.Exit(1)
+	}
 
 	if err = (&controller.TemplateReconciler{
-		Client:    mgr.GetClient(),
-		Scheme:    mgr.GetScheme(),
-		K8sClient: k8sClient,
+		Client:     mgr.GetClient(),
+		Scheme:     mgr.GetScheme(),
+		K8sClient:  k8sClient,
+		Repository: rep,
 	}).SetupWithManager(mgr); err != nil {
 		setupLog.Error(err, "unable to create controller", "controller", "Template")
 		os.Exit(1)

go.mod

@@ -92,6 +92,7 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240930140551-af27646dc61f // indirect
 	google.golang.org/grpc v1.67.1 // indirect
 	google.golang.org/protobuf v1.35.1 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	k8s.io/apiextensions-apiserver v0.31.1 // indirect

internal/controller/template_controller_test.go → internal/controller/controller_integration_test.go

@@ -1,4 +1,4 @@
-package controller
+package controller_test
 
 import (
 	"context"

internal/controller/dynamicReconciler.go

@@ -0,0 +1,131 @@
+package controller
+
+import (
+	"context"
+	kumquatv1beta1 "kumquat/api/v1beta1"
+	"kumquat/repository"
+
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+)
+
+type DynamicReconciler struct {
+	client.Client
+	GVK          schema.GroupVersionKind
+	K8sClient    K8sClient
+	WatchManager WatchManagerInterface
+	repository   repository.Repository
+}
+
+func NewDynamicReconciler(client client.Client, gvk schema.GroupVersionKind, k8sClient K8sClient, wm WatchManagerInterface, repo repository.Repository) *DynamicReconciler { // nolint:errcheck
+	return &DynamicReconciler{
+		Client:       client,
+		GVK:          gvk,
+		K8sClient:    k8sClient,
+		WatchManager: wm,
+		repository:   repo,
+	}
+}
+
+func (r *DynamicReconciler) Reconcile(ctx context.Context, req reconcile.Request) (reconcile.Result, error) {
+	log := log.FromContext(ctx)
+	log.Info("Reconciling dynamic resource", "GVK", r.GVK, "name", req.Name, "namespace", req.Namespace)
+
+	resource, err := r.fetchResource(ctx, req)
+	if err != nil {
+		return reconcile.Result{}, err
+	}
+
+	if resource == nil {
+		log.Info("Resource deleted", "GVK", r.GVK, "name", req.Name, "namespace", req.Namespace)
+		// set group to core if it is empty
+		group := r.GVK.Group
+		if r.GVK.Group == "" {
+			group = "core"
+		}
+
+		err = DeleteResourceFromDatabaseByNameAndNameSpace(r.repository, r.GVK.Kind, group, req.Namespace, req.Name) // nolint:errcheck
+		if err != nil {
+			return reconcile.Result{}, err
+		}
+		r.findAndReProcessAffectedTemplates(ctx) // nolint:errcheck
+
+		return reconcile.Result{}, nil
+
+	}
+
+	err = UpsertResourceToDatabase(r.repository, resource, ctx) // nolint:errcheck
+	if err != nil {
+		return reconcile.Result{}, err
+	}
+
+	err = r.findAndReProcessAffectedTemplates(ctx) // nolint:errcheck
+
+	if err != nil {
+		return reconcile.Result{}, err
+	}
+
+	return reconcile.Result{}, nil
+}
+
+// reconcileTemplates reconciles the templates associated with the resource.
+func (r *DynamicReconciler) findAndReProcessAffectedTemplates(ctx context.Context) error {
+	log := log.FromContext(ctx)
+	var templates []string
+
+	templatesMap := r.WatchManager.GetManagedTemplates()
+	for templateName, gvks := range templatesMap {
+		if _, exists := gvks[r.GVK]; exists {
+			log.Info("Reconciling template", "templateName", templateName)
+			templates = append(templates, templateName)
+		}
+	}
+
+	for _, templateName := range templates {
+		if err := r.processTemplate(ctx, templateName); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// fetchResource fetches the resource from the cluster.
+func (r *DynamicReconciler) fetchResource(
+	ctx context.Context,
+	req reconcile.Request,
+) (*unstructured.Unstructured, error) {
+	resource := &unstructured.Unstructured{}
+	resource.SetGroupVersionKind(r.GVK)
+	err := r.Client.Get(ctx, req.NamespacedName, resource)
+	if err != nil {
+		if client.IgnoreNotFound(err) != nil {
+			return nil, err
+		}
+		return nil, nil
+	}
+	return resource, nil
+}
+
+// processTemplate processes a single template.
+func (r *DynamicReconciler) processTemplate(ctx context.Context, templateName string) error {
+	log := log.FromContext(ctx)
+
+	template, err := r.K8sClient.Get(ctx, "kumquat.guidewire.com", "Template", "templates", templateName)
+	if err != nil {
+		log.Error(err, "unable to get template", "templateName", templateName)
+		return err
+	}
+
+	templateObj := &kumquatv1beta1.Template{}
+	if err := runtime.DefaultUnstructuredConverter.FromUnstructured(template.Object, templateObj); err != nil {
+		log.Error(err, "unable to convert unstructured to template")
+		return err
+	}
+	return ProcessTemplateResources(templateObj, r.repository, log, r.K8sClient, r.WatchManager)
+
+}