[OOM-K8S-CERT-EXTERNAL-PROVIDER] Mock implementaion enhanced (part II)

Rename CertServiceIssuer -> CMPv2Issuer
Checking for Issuer.Kind (has to be CMPv2Issuer)
Introduced exit codes
Refactoring file names and packages
Moved tests to main package (according to GOlang convention)

Issue-ID: OOM-2559
Signed-off-by: Jan Malkiewicz <jan.malkiewicz@nokia.com>
Change-Id: I710d9f6c9bd22318e5152e5215b78d5a9e7b4540

1 files changed, 127 insertions, 0 deletions

diff --git a/certServiceK8sExternalProvider/src/cmpv2controller/cmpv2_issuer_controller.go b/certServiceK8sExternalProvider/src/cmpv2controller/cmpv2_issuer_controller.go
new file mode 100644
index 00000000..e5b1b196
--- /dev/null
+++ b/certServiceK8sExternalProvider/src/cmpv2controller/cmpv2_issuer_controller.go
@@ -0,0 +1,127 @@
+/*
+ * ============LICENSE_START=======================================================
+ * oom-certservice-k8s-external-provider
+ * ================================================================================
+ * Copyright (c) 2019 Smallstep Labs, Inc.
+ * Modifications copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * This source code was copied from the following git repository:
+ * https://github.com/smallstep/step-issuer
+ * The source code was modified for usage in the ONAP project.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package cmpv2controller
+
+import (
+	"context"
+	"fmt"
+	"github.com/go-logr/logr"
+	core "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/utils/clock"
+	"onap.org/oom-certservice/k8s-external-provider/src/cmpv2api"
+	provisioners "onap.org/oom-certservice/k8s-external-provider/src/cmpv2provisioner"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+// CMPv2IssuerController reconciles a CMPv2Issuer object
+type CMPv2IssuerController struct {
+	client.Client
+	Log      logr.Logger
+	Clock    clock.Clock
+	Recorder record.EventRecorder
+}
+
+// Reconcile will read and validate the CMPv2Issuer resources, it will set the
+// status condition ready to true if everything is right.
+func (controller *CMPv2IssuerController) Reconcile(req ctrl.Request) (ctrl.Result, error) {
+	ctx := context.Background()
+	log := controller.Log.WithValues("cmpv2-issuer-controller", req.NamespacedName)
+
+	issuer := new(cmpv2api.CMPv2Issuer)
+	if err := controller.Client.Get(ctx, req.NamespacedName, issuer); err != nil {
+		log.Error(err, "failed to retrieve CMPv2Issuer resource")
+		return ctrl.Result{}, client.IgnoreNotFound(err)
+	}
+	log.Info("Issuer loaded: ", "issuer", issuer)
+
+	statusUpdater := newStatusUpdater(controller, issuer, log)
+	if err := validateCMPv2IssuerSpec(issuer.Spec); err != nil {
+		log.Error(err, "failed to validate CMPv2Issuer resource")
+		statusUpdater.UpdateNoError(ctx, cmpv2api.ConditionFalse, "Validation", "Failed to validate resource: %v", err)
+		return ctrl.Result{}, err
+	}
+	log.Info("Issuer validated. ")
+
+	// Fetch the provisioner password
+	var secret core.Secret
+	secretNamespaceName := types.NamespacedName{
+		Namespace: req.Namespace,
+		Name:      issuer.Spec.KeyRef.Name,
+	}
+	if err := controller.Client.Get(ctx, secretNamespaceName, &secret); err != nil {
+		log.Error(err, "failed to retrieve CMPv2Issuer provisioner secret", "namespace", secretNamespaceName.Namespace, "name", secretNamespaceName.Name)
+		if apierrors.IsNotFound(err) {
+			statusUpdater.UpdateNoError(ctx, cmpv2api.ConditionFalse, "NotFound", "Failed to retrieve provisioner secret: %v", err)
+		} else {
+			statusUpdater.UpdateNoError(ctx, cmpv2api.ConditionFalse, "Error", "Failed to retrieve provisioner secret: %v", err)
+		}
+		return ctrl.Result{}, err
+	}
+	password, ok := secret.Data[issuer.Spec.KeyRef.Key]
+	if !ok {
+		err := fmt.Errorf("secret %s does not contain key %s", secret.Name, issuer.Spec.KeyRef.Key)
+		log.Error(err, "failed to retrieve CMPv2Issuer provisioner secret", "namespace", secretNamespaceName.Namespace, "name", secretNamespaceName.Name)
+		statusUpdater.UpdateNoError(ctx, cmpv2api.ConditionFalse, "NotFound", "Failed to retrieve provisioner secret: %v", err)
+		return ctrl.Result{}, err
+	}
+
+	// Initialize and store the provisioner
+	provisioner, err := provisioners.New(issuer, password)
+	if err != nil {
+		log.Error(err, "failed to initialize provisioner")
+		statusUpdater.UpdateNoError(ctx, cmpv2api.ConditionFalse, "Error", "failed initialize provisioner")
+		return ctrl.Result{}, err
+	}
+	provisioners.Store(req.NamespacedName, provisioner)
+
+	log.Info( "CMPv2Issuer verified. Updating status to Verified...")
+	return ctrl.Result{}, statusUpdater.Update(ctx, cmpv2api.ConditionTrue, "Verified", "CMPv2Issuer verified and ready to sign certificates")
+}
+
+// SetupWithManager initializes the CMPv2Issuer controller into the controller
+// runtime.
+func (controller *CMPv2IssuerController) SetupWithManager(manager ctrl.Manager) error {
+	return ctrl.NewControllerManagedBy(manager).
+		For(&cmpv2api.CMPv2Issuer{}).
+		Complete(controller)
+}
+
+func validateCMPv2IssuerSpec(issuerSpec cmpv2api.CMPv2IssuerSpec) error {
+	switch {
+	case issuerSpec.URL == "":
+		return fmt.Errorf("spec.url cannot be empty")
+	case issuerSpec.KeyRef.Name == "":
+		return fmt.Errorf("spec.keyRef.name cannot be empty")
+	case issuerSpec.KeyRef.Key == "":
+		return fmt.Errorf("spec.keyRef.key cannot be empty")
+	default:
+		return nil
+	}
+}