feat: sidecar role and rolebinding (#23)

Signed-off-by: Leonardo Cecchi <leonardo.cecchi@enterprisedb.com>

Makefile

@@ -45,7 +45,7 @@ help: ## Display this help.
 
 .PHONY: manifests
 manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
-	$(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+	$(CONTROLLER_GEN) rbac:roleName=plugin-barman-cloud crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
 
 .PHONY: generate
 generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.

api/v1/zz_generated.deepcopy.go

@@ -29,7 +29,7 @@ func (in *ObjectStore) DeepCopyInto(out *ObjectStore) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
-	out.Spec = in.Spec
+	in.Spec.DeepCopyInto(&out.Spec)
 	out.Status = in.Status
 }
 
@@ -86,6 +86,7 @@ func (in *ObjectStoreList) DeepCopyObject() runtime.Object {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ObjectStoreSpec) DeepCopyInto(out *ObjectStoreSpec) {
 	*out = *in
+	in.Configuration.DeepCopyInto(&out.Configuration)
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ObjectStoreSpec.

cmd/operator/main.go

@@ -2,17 +2,14 @@
 package main
 
 import (
-	"context"
 	"fmt"
 	"os"
 
 	"github.com/cloudnative-pg/machinery/pkg/log"
-	"github.com/sourcegraph/conc/pool"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
 	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator"
-	"github.com/cloudnative-pg/plugin-barman-cloud/internal/operator/manager"
 )
 
 func main() {
@@ -20,7 +17,15 @@ func main() {
 
 	logFlags := &log.Flags{}
 	rootCmd := &cobra.Command{
-		Use: "plugin-barman-cloud",
+		Use:   "plugin-barman-cloud",
+		Short: "Starts the BarmanObjectStore reconciler and the Barman Cloud CNPG-i plugin",
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			if len(viper.GetString("sidecar-image")) == 0 {
+				return fmt.Errorf("missing required SIDECAR_IMAGE environment variable")
+			}
+
+			return operator.Start(cmd.Context())
+		},
 		PersistentPreRunE: func(_ *cobra.Command, _ []string) error {
 			logFlags.ConfigureLogging()
 			return nil
@@ -28,61 +33,66 @@ func main() {
 	}
 
 	logFlags.AddFlags(rootCmd.PersistentFlags())
-	rootCmd.AddCommand(newOperatorCommand())
+
+	rootCmd.Flags().String("metrics-bind-address", "0", "The address the metrics endpoint binds to. "+
+		"Use :8443 for HTTPS or :8080 for HTTP, or leave as 0 to disable the metrics service.")
+	_ = viper.BindPFlag("metrics-bind-address", rootCmd.Flags().Lookup("metrics-bind-address"))
+
+	rootCmd.Flags().String("health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
+	_ = viper.BindPFlag("health-probe-bind-address", rootCmd.Flags().Lookup("health-probe-bind-address"))
+
+	rootCmd.Flags().Bool("leader-elect", false,
+		"Enable leader election for controller manager. "+
+			"Enabling this will ensure there is only one active controller manager.")
+	_ = viper.BindPFlag("leader-elect", rootCmd.Flags().Lookup("leader-elect"))
+
+	rootCmd.Flags().Bool("metrics-secure", true,
+		"If set, the metrics endpoint is served securely via HTTPS. Use --metrics-secure=false to use HTTP instead.")
+	_ = viper.BindPFlag("metrics-secure", rootCmd.Flags().Lookup("metrics-secure"))
+
+	rootCmd.Flags().Bool("enable-http2", false,
+		"If set, HTTP/2 will be enabled for the metrics and webhook servers")
+	_ = viper.BindPFlag("enable-http2", rootCmd.Flags().Lookup("enable-http2"))
+
+	rootCmd.Flags().String(
+		"plugin-path",
+		"",
+		"The plugins socket path",
+	)
+	_ = viper.BindPFlag("plugin-path", rootCmd.Flags().Lookup("plugin-path"))
+
+	rootCmd.Flags().String(
+		"server-cert",
+		"",
+		"The public key to be used for the server process",
+	)
+	_ = viper.BindPFlag("server-cert", rootCmd.Flags().Lookup("server-cert"))
+
+	rootCmd.Flags().String(
+		"server-key",
+		"",
+		"The key to be used for the server process",
+	)
+	_ = viper.BindPFlag("server-key", rootCmd.Flags().Lookup("server-key"))
+
+	rootCmd.Flags().String(
+		"client-cert",
+		"",
+		"The client public key to verify the connection",
+	)
+	_ = viper.BindPFlag("client-cert", rootCmd.Flags().Lookup("client-cert"))
+
+	rootCmd.Flags().String(
+		"server-address",
+		"",
+		"The address where to listen (i.e. 0:9090)",
+	)
+	_ = viper.BindPFlag("server-address", rootCmd.Flags().Lookup("server-address"))
+
+	_ = viper.BindEnv("sidecar-image", "SIDECAR_IMAGE")
 
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
 }
-
-func newOperatorCommand() *cobra.Command {
-	cmd := operator.NewCommand()
-	cmd.Use = "operator"
-	cmd.Short = "Starts the BarmanObjectStore reconciler and the Barman Cloud CNPG-i plugin"
-	grpcServer := cmd.RunE
-
-	cmd.RunE = func(cmd *cobra.Command, args []string) error {
-		operatorPool := pool.
-			New().
-			WithContext(cmd.Context()).
-			WithCancelOnError().
-			WithFirstError()
-		operatorPool.Go(func(ctx context.Context) error {
-			cmd.SetContext(ctx)
-
-			if len(viper.GetString("sidecar-image")) == 0 {
-				return fmt.Errorf("missing required SIDECAR_IMAGE environment variable")
-			}
-
-			err := grpcServer(cmd, args)
-			return err
-		})
-		operatorPool.Go(manager.Start)
-		return operatorPool.Wait()
-	}
-
-	cmd.Flags().String("metrics-bind-address", "0", "The address the metrics endpoint binds to. "+
-		"Use :8443 for HTTPS or :8080 for HTTP, or leave as 0 to disable the metrics service.")
-	_ = viper.BindPFlag("metrics-bind-address", cmd.Flags().Lookup("metrics-bind-address"))
-
-	cmd.Flags().String("health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
-	_ = viper.BindPFlag("health-probe-bind-address", cmd.Flags().Lookup("health-probe-bind-address"))
-
-	cmd.Flags().Bool("leader-elect", false,
-		"Enable leader election for controller manager. "+
-			"Enabling this will ensure there is only one active controller manager.")
-	_ = viper.BindPFlag("leader-elect", cmd.Flags().Lookup("leader-elect"))
-
-	cmd.Flags().Bool("metrics-secure", true,
-		"If set, the metrics endpoint is served securely via HTTPS. Use --metrics-secure=false to use HTTP instead.")
-	_ = viper.BindPFlag("metrics-secure", cmd.Flags().Lookup("metrics-secure"))
-
-	cmd.Flags().Bool("enable-http2", false,
-		"If set, HTTP/2 will be enabled for the metrics and webhook servers")
-	_ = viper.BindPFlag("enable-http2", cmd.Flags().Lookup("enable-http2"))
-
-	_ = viper.BindEnv("sidecar-image", "SIDECAR_IMAGE")
-
-	return cmd
-}

config/crd/bases/barmancloud.cnpg.io_objectstores.yaml

@@ -17,7 +17,7 @@ spec:
   - name: v1
     schema:
       openAPIV3Schema:
-        description: ObjectStore is the Schema for the objectstores API
+        description: ObjectStore is the Schema for the objectstores API.
         properties:
           apiVersion:
             description: |-
@@ -37,7 +37,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: ObjectStoreSpec defines the desired state of ObjectStore
+            description: ObjectStoreSpec defines the desired state of ObjectStore.
             properties:
               configuration:
                 description: |-
@@ -382,7 +382,7 @@ spec:
             - configuration
             type: object
           status:
-            description: ObjectStoreStatus defines the observed state of ObjectStore
+            description: ObjectStoreStatus defines the observed state of ObjectStore.
             type: object
         type: object
     served: true

config/rbac/role.yaml

@@ -2,7 +2,7 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
-  name: manager-role
+  name: plugin-barman-cloud
 rules:
 - apiGroups:
   - barmancloud.cnpg.io
@@ -30,3 +30,15 @@ rules:
   - get
   - patch
   - update
+- apiGroups:
+  - rbac.authorization.k8s.io
+  resources:
+  - rolebindings
+  - roles
+  verbs:
+  - create
+  - get
+  - list
+  - patch
+  - update
+  - watch

config/rbac/role_binding.yaml

@@ -4,11 +4,11 @@ metadata:
   labels:
     app.kubernetes.io/name: plugin-barman-cloud
     app.kubernetes.io/managed-by: kustomize
-  name: manager-rolebinding
+  name: plugin-barman-cloud-binding
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
-  name: manager-role
+  name: plugin-barman-cloud
 subjects:
 - kind: ServiceAccount
   name: plugin-barman-cloud

config/samples/barmancloud_v1_objectstore.yaml

@@ -1,9 +0,0 @@
-apiVersion: barmancloud.cnpg.io/v1
-kind: ObjectStore
-metadata:
-  labels:
-    app.kubernetes.io/name: plugin-barman-cloud
-    app.kubernetes.io/managed-by: kustomize
-  name: objectstore-sample
-spec:
-  # TODO(user): Add fields here

docs/examples/cluster-example.yaml

@@ -8,7 +8,7 @@ spec:
   plugins:
   - name: barman-cloud.cloudnative-pg.io
     parameters:
-      barmanObjectStore: minio-store
+      barmanObjectName: minio-store
 
   storage:
     size: 1Gi

docs/examples/minio-store.yaml

@@ -0,0 +1,23 @@
+apiVersion: barmancloud.cnpg.io/v1
+kind: ObjectStore
+metadata:
+  name: minio-store
+spec:
+  configuration:
+    destinationPath: s3://backups/
+    endpointURL: http://minio:9000
+    s3Credentials:
+      accessKeyId:
+        name: minio
+        key: ACCESS_KEY_ID
+      secretAccessKey:
+        name: minio
+        key: ACCESS_SECRET_KEY
+    wal:
+      compression: gzip
+    data:
+      additionalCommandArgs:
+        - "--min-chunk-size=5MB"
+        - "--read-timeout=60"
+        - "-vv"
+    

docs/minio/minio-client.yaml

@@ -0,0 +1,20 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    run: mc
+  name: mc
+spec:
+  containers:
+  - env:
+    - name: MC_HOST_minio
+      value: http://chooJeiroroo2noquomei2uuceisheth:ongeiqueitohL0queeLohkiur2quaing@minio:9000
+    image: minio/mc
+    name: mc
+    resources: {}
+    # Keep the pod up to exec stuff on it
+    command:
+      - sleep
+      - "3600"
+  dnsPolicy: ClusterFirst
+  restartPolicy: Always

docs/minio/minio-delete.sh

@@ -0,0 +1 @@
+kubectl exec -ti mc -- mc rm -r --force minio/backups

docs/minio/minio-deployment.yaml

@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: minio
+  labels:
+    app: minio
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: minio
+  template:
+    metadata:
+      labels:
+        app: minio
+    spec:
+      containers:
+      - name: minio
+        image: minio/minio
+        ports:
+        - containerPort: 9000
+        volumeMounts:
+        - mountPath: /data
+          name: data
+        args:
+        - server
+        - /data
+        env:
+        - name: MINIO_ACCESS_KEY
+          valueFrom:
+            secretKeyRef: 
+              name: minio
+              key: ACCESS_KEY_ID
+        - name: MINIO_SECRET_KEY
+          valueFrom:
+            secretKeyRef: 
+              name: minio
+              key: ACCESS_SECRET_KEY
+      volumes:
+      - name: data
+        persistentVolumeClaim:
+          claimName: minio

docs/minio/minio-pvc.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: minio
+spec:
+  accessModes:
+    - ReadWriteOnce
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: 1Gi

docs/minio/minio-secret.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+data:
+  ACCESS_KEY_ID: Y2hvb0plaXJvcm9vMm5vcXVvbWVpMnV1Y2Vpc2hldGg=
+  ACCESS_SECRET_KEY: b25nZWlxdWVpdG9oTDBxdWVlTG9oa2l1cjJxdWFpbmc=
+kind: Secret
+metadata:
+  name: minio

docs/minio/minio-service.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: minio
+spec:
+  selector:
+    app: minio
+  ports:
+    - protocol: TCP
+      port: 9000
+      targetPort: 9000

go.mod

@@ -10,7 +10,6 @@ require (
 	github.com/cloudnative-pg/machinery v0.0.0-20241001075747-34c8797af80f
 	github.com/onsi/ginkgo/v2 v2.20.2
 	github.com/onsi/gomega v1.34.2
-	github.com/sourcegraph/conc v0.3.0
 	github.com/spf13/cobra v1.8.1
 	github.com/spf13/viper v1.19.0
 	google.golang.org/grpc v1.67.1
@@ -80,6 +79,7 @@ require (
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
 	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
 	github.com/snorwin/jsonpatch v1.5.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
 	github.com/spf13/afero v1.11.0 // indirect
 	github.com/spf13/cast v1.6.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect

internal/cnpgi/operator/config/config.go

@@ -0,0 +1,71 @@
+package config
+
+import (
+	"strings"
+
+	cnpgv1 "github.com/cloudnative-pg/cloudnative-pg/api/v1"
+	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/common"
+
+	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/metadata"
+)
+
+// ConfigurationError represents a mistake in the plugin configuration
+type ConfigurationError struct {
+	messages []string
+}
+
+// Error implements the error interface
+func (e *ConfigurationError) Error() string {
+	return strings.Join(e.messages, ",")
+}
+
+// NewConfigurationError creates a new empty configuration error
+func NewConfigurationError() *ConfigurationError {
+	return &ConfigurationError{}
+}
+
+// WithMessage adds a new error message to a potentially empty
+// ConfigurationError
+func (e *ConfigurationError) WithMessage(msg string) *ConfigurationError {
+	if e == nil {
+		return &ConfigurationError{
+			messages: []string{msg},
+		}
+	}
+
+	return &ConfigurationError{
+		messages: append(e.messages, msg),
+	}
+}
+
+// IsEmpty returns true if there's no error messages
+func (e *ConfigurationError) IsEmpty() bool {
+	return len(e.messages) == 0
+}
+
+// PluginConfiguration is the configuration of the plugin
+type PluginConfiguration struct {
+	BarmanObjectName string
+}
+
+// NewFromCluster extracts the configuration from the cluster
+func NewFromCluster(cluster *cnpgv1.Cluster) (*PluginConfiguration, error) {
+	helper := common.NewPlugin(
+		*cluster,
+		metadata.PluginName,
+	)
+
+	result := &PluginConfiguration{
+		BarmanObjectName: helper.Parameters["barmanObjectName"],
+	}
+
+	err := NewConfigurationError()
+	if len(result.BarmanObjectName) == 0 {
+		err = err.WithMessage("Missing barmanObjectName parameter")
+	}
+
+	if err.IsEmpty() {
+		return result, nil
+	}
+	return result, err
+}

internal/cnpgi/operator/config/doc.go

@@ -0,0 +1,2 @@
+// Package config contains the functions to parse the plugin configuration
+package config

internal/cnpgi/operator/lifecycle.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"errors"
 
-	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/common"
 	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/decoder"
 	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/object"
 	"github.com/cloudnative-pg/cnpg-i/pkg/lifecycle"
@@ -12,7 +11,7 @@ import (
 	"github.com/spf13/viper"
 	corev1 "k8s.io/api/core/v1"
 
-	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/metadata"
+	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator/config"
 )
 
 // LifecycleImplementation is the implementation of the lifecycle handler
@@ -65,12 +64,10 @@ func (impl LifecycleImplementation) LifecycleHook(
 		return nil, err
 	}
 
-	helper := common.NewPlugin(
-		*cluster,
-		metadata.PluginName,
-	)
-
-	// TODO: Validation of the plugin configuration
+	pluginConfiguration, err := config.NewFromCluster(cluster)
+	if err != nil {
+		return nil, err
+	}
 
 	mutatedPod := pod.DeepCopy()
 	err = object.InjectPluginSidecar(mutatedPod, &corev1.Container{
@@ -79,7 +76,7 @@ func (impl LifecycleImplementation) LifecycleHook(
 		Env: []corev1.EnvVar{
 			{
 				Name:  "BARMAN_OBJECT_NAME",
-				Value: helper.Parameters["barmanObjectStore"],
+				Value: pluginConfiguration.BarmanObjectName,
 			},
 			{
 				// TODO: should we really use this one?

internal/cnpgi/operator/manager.go

@@ -14,15 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// Package manager contains the implementation of the ObjectStore controller manager
-package manager
+package operator
 
 import (
 	"context"
 	"crypto/tls"
-	"flag"
 
 	// +kubebuilder:scaffold:imports
+	cnpgv1 "github.com/cloudnative-pg/cloudnative-pg/api/v1"
 	"github.com/cloudnative-pg/machinery/pkg/log"
 	"github.com/spf13/viper"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -30,13 +29,12 @@ import (
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/healthz"
-	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/metrics/filters"
 	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
 
 	barmancloudv1 "github.com/cloudnative-pg/plugin-barman-cloud/api/v1"
-	"github.com/cloudnative-pg/plugin-barman-cloud/internal/operator/controller"
+	"github.com/cloudnative-pg/plugin-barman-cloud/internal/controller"
 
 	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
 	// to ensure that exec-entrypoint and run can make use of them.
@@ -47,8 +45,8 @@ var scheme = runtime.NewScheme()
 
 func init() {
 	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
-
 	utilruntime.Must(barmancloudv1.AddToScheme(scheme))
+	utilruntime.Must(cnpgv1.AddToScheme(scheme))
 	// +kubebuilder:scaffold:scheme
 }
 
@@ -58,14 +56,6 @@ func Start(ctx context.Context) error {
 
 	var tlsOpts []func(*tls.Config)
 
-	opts := zap.Options{
-		Development: true,
-	}
-	opts.BindFlags(flag.CommandLine)
-	flag.Parse()
-
-	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
-
 	// if the enable-http2 flag is false (the default), http/2 should be disabled
 	// due to its vulnerabilities. More specifically, disabling http/2 will
 	// prevent from being vulnerable to the HTTP/2 Stream Cancellation and
@@ -151,6 +141,18 @@ func Start(ctx context.Context) error {
 		return err
 	}
 
+	if err := mgr.Add(&CNPGI{
+		Client:         mgr.GetClient(),
+		PluginPath:     viper.GetString("plugin-path"),
+		ServerCertPath: viper.GetString("server-cert"),
+		ServerKeyPath:  viper.GetString("server-key"),
+		ClientCertPath: viper.GetString("client-cert"),
+		ServerAddress:  viper.GetString("server-address"),
+	}); err != nil {
+		setupLog.Error(err, "unable to create CNPGI runnable")
+		return err
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctx); err != nil {
 		setupLog.Error(err, "problem running manager")

internal/cnpgi/operator/reconciler.go

@@ -2,12 +2,24 @@ package operator
 
 import (
 	"context"
+	"fmt"
 
+	cnpgv1 "github.com/cloudnative-pg/cloudnative-pg/api/v1"
+	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/decoder"
+	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/object"
 	"github.com/cloudnative-pg/cnpg-i/pkg/reconciler"
+	rbacv1 "k8s.io/api/rbac/v1"
+	apierrs "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator/config"
 )
 
 // ReconcilerImplementation implements the Reconciler capability
 type ReconcilerImplementation struct {
+	Client client.Client
 	reconciler.UnimplementedReconcilerHooksServer
 }
 
@@ -30,9 +42,37 @@ func (r ReconcilerImplementation) GetCapabilities(
 
 // Pre implements the reconciler interface
 func (r ReconcilerImplementation) Pre(
-	_ context.Context,
-	_ *reconciler.ReconcilerHooksRequest,
+	ctx context.Context,
+	request *reconciler.ReconcilerHooksRequest,
 ) (*reconciler.ReconcilerHooksResult, error) {
+	reconciledKind, err := object.GetKind(request.GetResourceDefinition())
+	if err != nil {
+		return nil, err
+	}
+	if reconciledKind != "Cluster" {
+		return &reconciler.ReconcilerHooksResult{
+			Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_CONTINUE,
+		}, nil
+	}
+
+	cluster, err := decoder.DecodeClusterJSON(request.GetResourceDefinition())
+	if err != nil {
+		return nil, err
+	}
+
+	pluginConfiguration, err := config.NewFromCluster(cluster)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := r.ensureRole(ctx, cluster, pluginConfiguration.BarmanObjectName); err != nil {
+		return nil, err
+	}
+
+	if err := r.ensureRoleBinding(ctx, cluster); err != nil {
+		return nil, err
+	}
+
 	return &reconciler.ReconcilerHooksResult{
 		Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_CONTINUE,
 	}, nil
@@ -47,3 +87,126 @@ func (r ReconcilerImplementation) Post(
 		Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_CONTINUE,
 	}, nil
 }
+
+func (r ReconcilerImplementation) ensureRole(
+	ctx context.Context,
+	cluster *cnpgv1.Cluster,
+	barmanObjectName string,
+) error {
+	var role rbacv1.Role
+	if err := r.Client.Get(ctx, client.ObjectKey{
+		Namespace: cluster.Namespace,
+		Name:      getRBACName(cluster.Name),
+	}, &role); err != nil {
+		if apierrs.IsNotFound(err) {
+			return r.createRole(ctx, cluster, barmanObjectName)
+		}
+		return err
+	}
+
+	// TODO: patch existing role
+	return nil
+}
+
+func (r ReconcilerImplementation) ensureRoleBinding(
+	ctx context.Context,
+	cluster *cnpgv1.Cluster,
+) error {
+	var role rbacv1.RoleBinding
+	if err := r.Client.Get(ctx, client.ObjectKey{
+		Namespace: cluster.Namespace,
+		Name:      getRBACName(cluster.Name),
+	}, &role); err != nil {
+		if apierrs.IsNotFound(err) {
+			return r.createRoleBinding(ctx, cluster)
+		}
+		return err
+	}
+
+	// TODO: patch existing role binding
+	return nil
+}
+
+func (r ReconcilerImplementation) createRole(
+	ctx context.Context,
+	cluster *cnpgv1.Cluster,
+	barmanObjectName string,
+) error {
+	role := buildRole(cluster, barmanObjectName)
+	if err := ctrl.SetControllerReference(cluster, role, r.Client.Scheme()); err != nil {
+		return err
+	}
+	return r.Client.Create(ctx, role)
+}
+
+func (r ReconcilerImplementation) createRoleBinding(
+	ctx context.Context,
+	cluster *cnpgv1.Cluster,
+) error {
+	roleBinding := buildRoleBinding(cluster)
+	if err := ctrl.SetControllerReference(cluster, roleBinding, r.Client.Scheme()); err != nil {
+		return err
+	}
+	return r.Client.Create(ctx, roleBinding)
+}
+
+func buildRole(
+	cluster *cnpgv1.Cluster,
+	barmanObjectName string,
+) *rbacv1.Role {
+	return &rbacv1.Role{
+		ObjectMeta: metav1.ObjectMeta{
+			Namespace: cluster.Namespace,
+			Name:      getRBACName(cluster.Name),
+		},
+
+		Rules: []rbacv1.PolicyRule{
+			{
+				APIGroups: []string{
+					"barmancloud.cnpg.io",
+				},
+				Verbs: []string{
+					"get",
+					"watch",
+					"list",
+				},
+				Resources: []string{
+					"objectstores",
+				},
+				ResourceNames: []string{
+					barmanObjectName,
+				},
+			},
+		},
+	}
+}
+
+func buildRoleBinding(
+	cluster *cnpgv1.Cluster,
+) *rbacv1.RoleBinding {
+	return &rbacv1.RoleBinding{
+		ObjectMeta: metav1.ObjectMeta{
+			Namespace: cluster.Namespace,
+			Name:      getRBACName(cluster.Name),
+		},
+		Subjects: []rbacv1.Subject{
+			{
+				Kind:      "ServiceAccount",
+				APIGroup:  "",
+				Name:      cluster.Name,
+				Namespace: cluster.Namespace,
+			},
+		},
+		RoleRef: rbacv1.RoleRef{
+			APIGroup: "rbac.authorization.k8s.io",
+			Kind:     "Role",
+			Name:     getRBACName(cluster.Name),
+		},
+	}
+}
+
+// getRBACName returns the name of the RBAC entities for the
+// barman cloud plugin
+func getRBACName(clusterName string) string {
+	return fmt.Sprintf("%s-barman", clusterName)
+}

internal/cnpgi/operator/start.go

@@ -1,21 +1,45 @@
 package operator
 
 import (
+	"context"
+
 	"github.com/cloudnative-pg/cnpg-i-machinery/pkg/pluginhelper/http"
 	"github.com/cloudnative-pg/cnpg-i/pkg/lifecycle"
 	"github.com/cloudnative-pg/cnpg-i/pkg/reconciler"
-	"github.com/spf13/cobra"
 	"google.golang.org/grpc"
+	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
-// NewCommand creates the command to start the GRPC server
+// CNPGI is the implementation of the CNPG-i server
+type CNPGI struct {
+	Client         client.Client
+	PluginPath     string
+	ServerCertPath string
+	ServerKeyPath  string
+	ClientCertPath string
+	ServerAddress  string
+}
+
+// Start starts the GRPC server
 // of the operator plugin
-func NewCommand() *cobra.Command {
-	cmd := http.CreateMainCmd(IdentityImplementation{}, func(server *grpc.Server) error {
-		reconciler.RegisterReconcilerHooksServer(server, ReconcilerImplementation{})
+func (c *CNPGI) Start(ctx context.Context) error {
+	enrich := func(server *grpc.Server) error {
+		reconciler.RegisterReconcilerHooksServer(server, ReconcilerImplementation{
+			Client: c.Client,
+		})
 		lifecycle.RegisterOperatorLifecycleServer(server, LifecycleImplementation{})
 		return nil
-	})
-	cmd.Use = "plugin"
-	return cmd
+	}
+
+	srv := http.Server{
+		IdentityImpl:   IdentityImplementation{},
+		Enrichers:      []http.ServerEnricher{enrich},
+		PluginPath:     c.PluginPath,
+		ServerCertPath: c.ServerCertPath,
+		ServerKeyPath:  c.ServerKeyPath,
+		ClientCertPath: c.ClientCertPath,
+		ServerAddress:  c.ServerAddress,
+	}
+
+	return srv.Start(ctx)
 }

internal/controller/objectstore_controller.go

@@ -34,6 +34,8 @@ type ObjectStoreReconciler struct {
 	Scheme *runtime.Scheme
 }
 
+// +kubebuilder:rbac:groups=rbac.authorization.k8s.io,resources=rolebindings,verbs=create;patch;update;get;list;watch
+// +kubebuilder:rbac:groups=rbac.authorization.k8s.io,resources=roles,verbs=create;patch;update;get;list;watch
 // +kubebuilder:rbac:groups=barmancloud.cnpg.io,resources=objectstores,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=barmancloud.cnpg.io,resources=objectstores/status,verbs=get;update;patch
 // +kubebuilder:rbac:groups=barmancloud.cnpg.io,resources=objectstores/finalizers,verbs=update

internal/controller/suite_test.go

@@ -61,7 +61,7 @@ var _ = BeforeSuite(func() {
 
 	By("bootstrapping test environment")
 	testEnv = &envtest.Environment{
-		CRDDirectoryPaths:     []string{filepath.Join("..", "..", "..", "config", "crd", "bases")},
+		CRDDirectoryPaths:     []string{filepath.Join("..", "..", "config", "crd", "bases")},
 		ErrorIfCRDPathMissing: true,
 
 		// The BinaryAssetsDirectory is only required if you want to run the tests directly

kubernetes/deployment.yaml

@@ -29,7 +29,6 @@ spec:
               key: SIDECAR_IMAGE
               name: plugin-barman-cloud
         args:
-        - operator
         - --server-cert=/server/tls.crt
         - --server-key=/server/tls.key
         - --client-cert=/client/tls.crt

kubernetes/kustomization.yaml

@@ -12,8 +12,8 @@ resources:
 images:
 - name: plugin-barman-cloud
   newName: kind.local/github.com/cloudnative-pg/plugin-barman-cloud/cmd/operator
-  newTag: 634ab82d4f8b68ffada6033b7dff817bbed61a2fec8e05f9ebf74f5bedafb0dd
+  newTag: 7e901b38eaf33b047dcf2eb044c9c8ca85535d8041a3144d25f7e1a4690ea071
 secretGenerator:
 - literals:
-  - SIDECAR_IMAGE=kind.local/github.com/cloudnative-pg/plugin-barman-cloud/cmd/instance:7173a2dcf3ce74e982ca3d35053de40fcec67b31d607a0d12547b4f9d09c535c
+  - SIDECAR_IMAGE=kind.local/github.com/cloudnative-pg/plugin-barman-cloud/cmd/instance:ca1fd58413940a247bc52cdb44f4a6909192d781b1767dc7ee9625368ee9d7e2
   name: plugin-barman-cloud