[Feature] License ArangoDeployment Fetcher (#1485)

CHANGELOG.md

@@ -8,6 +8,7 @@
 - (Bugfix) Proper handling of --agency.retries argument
 - (Documentation) Do not use field type name for field URL hash
 - (Maintenance) Bump Go to 1.20.11
+- (Feature) License ArangoDeployment Fetcher
 
 ## [1.2.35](https://github.com/arangodb/kube-arangodb/tree/1.2.35) (2023-11-06)
 - (Maintenance) Update go-driver to v1.6.0, update IsNotFound() checks

cmd/cmd.go

@@ -52,7 +52,6 @@ import (
 	"github.com/arangodb/kube-arangodb/pkg/deployment/features"
 	"github.com/arangodb/kube-arangodb/pkg/deployment/reconcile"
 	"github.com/arangodb/kube-arangodb/pkg/generated/clientset/versioned/scheme"
-	"github.com/arangodb/kube-arangodb/pkg/license"
 	"github.com/arangodb/kube-arangodb/pkg/logging"
 	"github.com/arangodb/kube-arangodb/pkg/metrics/collector"
 	"github.com/arangodb/kube-arangodb/pkg/operator"
@@ -172,8 +171,6 @@ var (
 	backupProbe                probe.ReadyProbe
 	appsProbe                  probe.ReadyProbe
 	k2KClusterSyncProbe        probe.ReadyProbe
-
-	licenseConfig license.Config
 )
 
 func init() {
@@ -239,9 +236,6 @@ func init() {
 	if err := reconcile.ActionsConfigGlobal.Init(&cmdMain); err != nil {
 		panic(err.Error())
 	}
-	if err := licenseConfig.Init(&cmdMain); err != nil {
-		panic(err.Error())
-	}
 }
 
 func Execute() int {
@@ -315,10 +309,6 @@ func executeMain(cmd *cobra.Command, args []string) {
 		})
 	}
 
-	if err := licenseConfig.Enable(); err != nil {
-		logger.Err(err).Fatal("Failed to License checker process")
-	}
-
 	logger.Info("nice to meet you")
 
 	// Print all enabled featured

pkg/license/license.community.go

@@ -20,15 +20,23 @@
 
 package license
 
-import "github.com/arangodb/kube-arangodb/pkg/util/assertion"
+import (
+	"context"
 
-func checkLicense(license string) License {
+	"github.com/arangodb/kube-arangodb/pkg/util/assertion"
+)
+
+func NewLicense(loader Loader) License {
 	return emptyLicense{}
 }
 
 type emptyLicense struct {
 }
 
+func (e emptyLicense) Refresh(ctx context.Context) error {
+	return nil
+}
+
 // Validate for the community returns that license is always missing, as it should be not used
 func (e emptyLicense) Validate(feature Feature, subFeatures ...Feature) Status {
 	assertion.Assert(true, assertion.CommunityLicenseCheckKey, "Feature %s has been validated in the community version", feature)

pkg/license/license.go

@@ -20,6 +20,10 @@
 
 package license
 
+import (
+	"context"
+)
+
 type Status int
 
 const (
@@ -79,4 +83,6 @@ type License interface {
 	// -- for each subFeature defined in subFeatures:
 	// --- checks if subFeature or '*' is in the list of License Feature enabled SubFeatures
 	Validate(feature Feature, subFeatures ...Feature) Status
+
+	Refresh(ctx context.Context) error
 }

pkg/license/loader_arangodeployment.go

@@ -0,0 +1,101 @@
+//
+// DISCLAIMER
+//
+// Copyright 2023 ArangoDB GmbH, Cologne, Germany
+//
+// 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.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package license
+
+import (
+	"context"
+	"encoding/base64"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/util/constants"
+	"github.com/arangodb/kube-arangodb/pkg/util/k8sutil"
+	"github.com/arangodb/kube-arangodb/pkg/util/kclient"
+)
+
+func NewArengoDeploymentLicenseLoader(factory kclient.Factory, namespace, name string) Loader {
+	return arangoDeploymentLicenseLoader{
+		factory:   factory,
+		namespace: namespace,
+		name:      name,
+	}
+}
+
+type arangoDeploymentLicenseLoader struct {
+	factory kclient.Factory
+
+	namespace, name string
+}
+
+func (a arangoDeploymentLicenseLoader) Refresh(ctx context.Context) (string, bool, error) {
+	client, ok := a.factory.Client()
+	if !ok {
+		return "", false, nil
+	}
+
+	deployment, err := client.Arango().DatabaseV1().ArangoDeployments(a.namespace).Get(ctx, a.name, meta.GetOptions{})
+	if err != nil {
+		if errors.IsNotFound(err) {
+			return "", false, nil
+		}
+
+		return "", false, err
+	}
+
+	spec := deployment.GetAcceptedSpec()
+
+	if !spec.License.HasSecretName() {
+		return "", false, nil
+	}
+
+	secret, err := client.Kubernetes().CoreV1().Secrets(deployment.GetNamespace()).Get(ctx, spec.License.GetSecretName(), meta.GetOptions{})
+	if err != nil {
+		if errors.IsNotFound(err) {
+			return "", false, nil
+		}
+
+		return "", false, err
+	}
+
+	var licenseData []byte
+
+	if lic, ok := secret.Data[constants.SecretKeyV2License]; ok {
+		licenseData = lic
+	} else if lic2, ok := secret.Data[constants.SecretKeyV2Token]; ok {
+		licenseData = lic2
+	}
+
+	if len(licenseData) == 0 {
+		return "", false, nil
+	}
+
+	if !k8sutil.IsJSON(licenseData) {
+		d, err := base64.StdEncoding.DecodeString(string(licenseData))
+		if err != nil {
+			return "", false, err
+		}
+
+		licenseData = d
+	}
+
+	return string(licenseData), true, nil
+}