Add Deployment and ConfigMap upgrade path

Author: grzpiotrowski

controllers/limitador_controller.go

@@ -35,6 +35,7 @@ import (
 	limitadorv1alpha1 "github.com/kuadrant/limitador-operator/api/v1alpha1"
 	"github.com/kuadrant/limitador-operator/pkg/limitador"
 	"github.com/kuadrant/limitador-operator/pkg/reconcilers"
+	upgrades "github.com/kuadrant/limitador-operator/pkg/upgrades"
 )
 
 // LimitadorReconciler reconciles a Limitador object
@@ -199,6 +200,16 @@ func (r *LimitadorReconciler) reconcileDeployment(ctx context.Context, limitador
 		return err
 	}
 
+	// TODO: To be deleted when the upgrade path is no longer needed.
+	newDeployment := &appsv1.Deployment{}
+	if err := r.Client().Get(ctx, client.ObjectKeyFromObject(deployment), newDeployment); err != nil {
+		return err
+	}
+	if err := upgrades.DeleteOldDeployment(ctx, r.Client(), limitadorObj, newDeployment); err != nil {
+		return err
+	}
+	// TODO: End of the block to be removed.
+
 	return nil
 }
 
@@ -266,6 +277,11 @@ func (r *LimitadorReconciler) reconcileLimitsConfigMap(ctx context.Context, limi
 		return err
 	}
 
+	// TODO: To be deleted when the upgrade path is no longer needed.
+	if err := upgrades.DeleteOldConfigMap(ctx, r.Client(), limitadorObj); err != nil {
+		return err
+	}
+
 	return nil
 }
 

pkg/upgrades/v0_6_0.go

@@ -0,0 +1,57 @@
+package upgrades
+
+import (
+	"context"
+	"fmt"
+
+	appsv1 "k8s.io/api/apps/v1"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	limitadorv1alpha1 "github.com/kuadrant/limitador-operator/api/v1alpha1"
+	"github.com/kuadrant/limitador-operator/pkg/helpers"
+)
+
+func DeleteOldDeployment(ctx context.Context, cli client.Client, limitadorObj *limitadorv1alpha1.Limitador, newDeployment *appsv1.Deployment) error {
+	availableCondition := helpers.FindDeploymentStatusCondition(newDeployment.Status.Conditions, "Available")
+
+	if availableCondition != nil && availableCondition.Status == v1.ConditionTrue {
+		oldDeployment := &appsv1.Deployment{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      Release_v0_6_0_DeploymentName(limitadorObj),
+				Namespace: limitadorObj.Namespace,
+			},
+		}
+
+		if err := cli.Delete(ctx, oldDeployment); err != nil && !errors.IsNotFound(err) {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func DeleteOldConfigMap(ctx context.Context, cli client.Client, limitadorObj *limitadorv1alpha1.Limitador) error {
+	oldConfigMap := &v1.ConfigMap{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      Release_v0_6_0__LimitsConfigMapName(limitadorObj),
+			Namespace: limitadorObj.Namespace,
+		},
+	}
+
+	if err := cli.Delete(ctx, oldConfigMap); err != nil && !errors.IsNotFound(err) {
+		return err
+	}
+
+	return nil
+}
+
+func Release_v0_6_0_DeploymentName(limitadorObj *limitadorv1alpha1.Limitador) string {
+	return limitadorObj.Name
+}
+
+func Release_v0_6_0__LimitsConfigMapName(limitadorObj *limitadorv1alpha1.Limitador) string {
+	return fmt.Sprintf("limits-config-%s", limitadorObj.Name)
+}