feat: separate recovery and cluster object store (#76)

Signed-off-by: Leonardo Cecchi <leonardo.cecchi@enterprisedb.com>
Signed-off-by: Francesco Canovai <francesco.canovai@enterprisedb.com>
Co-authored-by: Francesco Canovai <francesco.canovai@enterprisedb.com>

docs/examples/cluster-restore-archive.yaml

@@ -0,0 +1,27 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: cluster-restore
+spec:
+  instances: 3
+  imagePullPolicy: IfNotPresent
+
+  bootstrap:
+    recovery:
+      source: source
+
+  plugins:
+  - name: barman-cloud.cloudnative-pg.io
+    parameters:
+      barmanObjectName: minio-store-bis
+
+  externalClusters:
+  - name: source
+    plugin:
+      name: barman-cloud.cloudnative-pg.io
+      parameters:
+        barmanObjectName: minio-store
+        serverName: cluster-example
+
+  storage:
+    size: 1Gi

internal/cmd/instance/main.go

@@ -36,12 +36,16 @@ func NewCmd() *cobra.Command {
 	}
 
 	_ = viper.BindEnv("namespace", "NAMESPACE")
-	_ = viper.BindEnv("barman-object-name", "BARMAN_OBJECT_NAME")
 	_ = viper.BindEnv("cluster-name", "CLUSTER_NAME")
 	_ = viper.BindEnv("pod-name", "POD_NAME")
 	_ = viper.BindEnv("pgdata", "PGDATA")
 	_ = viper.BindEnv("spool-directory", "SPOOL_DIRECTORY")
+
+	_ = viper.BindEnv("barman-object-name", "BARMAN_OBJECT_NAME")
 	_ = viper.BindEnv("server-name", "SERVER_NAME")
 
+	_ = viper.BindEnv("recovery-barman-object-name", "RECOVERY_BARMAN_OBJECT_NAME")
+	_ = viper.BindEnv("recovery-server-name", "RECOVERY_SERVER_NAME")
+
 	return cmd
 }

internal/cmd/restore/main.go

@@ -23,8 +23,11 @@ func NewCmd() *cobra.Command {
 				"cluster-name",
 				"pod-name",
 				"spool-directory",
-				"barman-object-name",
-				"server-name",
+
+				// IMPORTANT: barman-object-name and server-name are not required
+				// to restore a cluster.
+				"recovery-barman-object-name",
+				"recovery-server-name",
 			}
 
 			for _, k := range requiredSettings {
@@ -42,8 +45,12 @@ func NewCmd() *cobra.Command {
 	_ = viper.BindEnv("pod-name", "POD_NAME")
 	_ = viper.BindEnv("pgdata", "PGDATA")
 	_ = viper.BindEnv("spool-directory", "SPOOL_DIRECTORY")
+
 	_ = viper.BindEnv("barman-object-name", "BARMAN_OBJECT_NAME")
 	_ = viper.BindEnv("server-name", "SERVER_NAME")
 
+	_ = viper.BindEnv("recovery-barman-object-name", "RECOVERY_BARMAN_OBJECT_NAME")
+	_ = viper.BindEnv("recovery-server-name", "RECOVERY_SERVER_NAME")
+
 	return cmd
 }

internal/cnpgi/common/wal.go

@@ -24,15 +24,19 @@ import (
 
 // WALServiceImplementation is the implementation of the WAL Service
 type WALServiceImplementation struct {
-	ServerName       string
-	BarmanObjectKey  client.ObjectKey
+	wal.UnimplementedWALServer
 	ClusterObjectKey client.ObjectKey
 	Client           client.Client
 	InstanceName     string
 	SpoolDirectory   string
 	PGDataPath       string
 	PGWALPath        string
-	wal.UnimplementedWALServer
+
+	BarmanObjectKey client.ObjectKey
+	ServerName      string
+
+	RecoveryBarmanObjectKey client.ObjectKey
+	RecoveryServerName      string
 }
 
 // GetCapabilities implements the WALService interface
@@ -123,8 +127,9 @@ func (w WALServiceImplementation) Restore(
 	ctx context.Context,
 	request *wal.WALRestoreRequest,
 ) (*wal.WALRestoreResult, error) {
-	contextLogger := log.FromContext(ctx)
-	startTime := time.Now()
+	// TODO: build full paths
+	walName := request.GetSourceWalName()
+	destinationPath := request.GetDestinationFileName()
 
 	var cluster cnpgv1.Cluster
 	if err := w.Client.Get(ctx, w.ClusterObjectKey, &cluster); err != nil {
@@ -132,13 +137,45 @@ func (w WALServiceImplementation) Restore(
 	}
 
 	var objectStore barmancloudv1.ObjectStore
-	if err := w.Client.Get(ctx, w.BarmanObjectKey, &objectStore); err != nil {
-		return nil, err
+	var serverName string
+
+	switch {
+	case cluster.IsReplica() && cluster.Status.CurrentPrimary == w.InstanceName:
+		// Designated primary on replica cluster, using recovery object store
+		serverName = w.RecoveryServerName
+		if err := w.Client.Get(ctx, w.RecoveryBarmanObjectKey, &objectStore); err != nil {
+			return nil, err
+		}
+
+	case cluster.Status.CurrentPrimary == "":
+		// Recovery from object store, using recovery object store
+		serverName = w.RecoveryServerName
+		if err := w.Client.Get(ctx, w.RecoveryBarmanObjectKey, &objectStore); err != nil {
+			return nil, err
+		}
+
+	default:
+		// Using cluster object store
+		serverName = w.ServerName
+		if err := w.Client.Get(ctx, w.BarmanObjectKey, &objectStore); err != nil {
+			return nil, err
+		}
 	}
 
-	// TODO: build full paths
-	walName := request.GetSourceWalName()
-	destinationPath := request.GetDestinationFileName()
+	return &wal.WALRestoreResult{}, w.restoreFromBarmanObjectStore(
+		ctx, &cluster, &objectStore, serverName, walName, destinationPath)
+}
+
+func (w WALServiceImplementation) restoreFromBarmanObjectStore(
+	ctx context.Context,
+	cluster *cnpgv1.Cluster,
+	objectStore *barmancloudv1.ObjectStore,
+	serverName string,
+	walName string,
+	destinationPath string,
+) error {
+	contextLogger := log.FromContext(ctx)
+	startTime := time.Now()
 
 	barmanConfiguration := &objectStore.Spec.Configuration
 
@@ -151,37 +188,37 @@ func (w WALServiceImplementation) Restore(
 		os.Environ(),
 	)
 	if err != nil {
-		return nil, fmt.Errorf("while getting recover credentials: %w", err)
+		return fmt.Errorf("while getting recover credentials: %w", err)
 	}
 	env = MergeEnv(env, credentialsEnv)
 
-	options, err := barmanCommand.CloudWalRestoreOptions(ctx, barmanConfiguration, w.ServerName)
+	options, err := barmanCommand.CloudWalRestoreOptions(ctx, barmanConfiguration, serverName)
 	if err != nil {
-		return nil, fmt.Errorf("while getting barman-cloud-wal-restore options: %w", err)
+		return fmt.Errorf("while getting barman-cloud-wal-restore options: %w", err)
 	}
 
 	// Create the restorer
 	var walRestorer *barmanRestorer.WALRestorer
 	if walRestorer, err = barmanRestorer.New(ctx, env, w.SpoolDirectory); err != nil {
-		return nil, fmt.Errorf("while creating the restorer: %w", err)
+		return fmt.Errorf("while creating the restorer: %w", err)
 	}
 
 	// Step 1: check if this WAL file is not already in the spool
 	var wasInSpool bool
 	if wasInSpool, err = walRestorer.RestoreFromSpool(walName, destinationPath); err != nil {
-		return nil, fmt.Errorf("while restoring a file from the spool directory: %w", err)
+		return fmt.Errorf("while restoring a file from the spool directory: %w", err)
 	}
 	if wasInSpool {
 		contextLogger.Info("Restored WAL file from spool (parallel)",
 			"walName", walName,
 		)
-		return nil, nil
+		return nil
 	}
 
 	// We skip this step if streaming connection is not available
-	if isStreamingAvailable(&cluster, w.InstanceName) {
+	if isStreamingAvailable(cluster, w.InstanceName) {
 		if err := checkEndOfWALStreamFlag(walRestorer); err != nil {
-			return nil, err
+			return err
 		}
 	}
 
@@ -194,7 +231,7 @@ func (w WALServiceImplementation) Restore(
 	if IsWALFile(walName) {
 		// If this is a regular WAL file, we try to prefetch
 		if walFilesList, err = gatherWALFilesToRestore(walName, maxParallel); err != nil {
-			return nil, fmt.Errorf("while generating the list of WAL files to restore: %w", err)
+			return fmt.Errorf("while generating the list of WAL files to restore: %w", err)
 		}
 	} else {
 		// This is not a regular WAL file, we fetch it directly
@@ -209,18 +246,18 @@ func (w WALServiceImplementation) Restore(
 	// is the one that PostgreSQL has requested to restore.
 	// The failure has already been logged in walRestorer.RestoreList method
 	if walStatus[0].Err != nil {
-		return nil, walStatus[0].Err
+		return walStatus[0].Err
 	}
 
 	// We skip this step if streaming connection is not available
 	endOfWALStream := isEndOfWALStream(walStatus)
-	if isStreamingAvailable(&cluster, w.InstanceName) && endOfWALStream {
+	if isStreamingAvailable(cluster, w.InstanceName) && endOfWALStream {
 		contextLogger.Info(
 			"Set end-of-wal-stream flag as one of the WAL files to be prefetched was not found")
 
 		err = walRestorer.SetEndOfWALStream()
 		if err != nil {
-			return nil, err
+			return err
 		}
 	}
 
@@ -241,7 +278,7 @@ func (w WALServiceImplementation) Restore(
 		"downloadTotalTime", time.Since(downloadStartTime),
 		"totalTime", time.Since(startTime))
 
-	return &wal.WALRestoreResult{}, nil
+	return nil
 }
 
 // Status implements the WALService interface

internal/cnpgi/instance/internal/client/client.go

@@ -3,6 +3,7 @@ package client
 import (
 	"context"
 	"fmt"
+	"math"
 	"sync"
 	"time"
 
@@ -21,32 +22,41 @@ type cachedSecret struct {
 // ExtendedClient is an extended client that is capable of caching multiple secrets without relying on informers
 type ExtendedClient struct {
 	client.Client
-	barmanObjectKey client.ObjectKey
-	cachedSecrets   []*cachedSecret
-	mux             *sync.Mutex
-	ttl             int
+	barmanObjectKeys []client.ObjectKey
+	cachedSecrets    []*cachedSecret
+	mux              *sync.Mutex
+	ttl              int
 }
 
 // NewExtendedClient returns an extended client capable of caching secrets on the 'Get' operation
 func NewExtendedClient(
 	baseClient client.Client,
-	objectStoreKey client.ObjectKey,
+	objectStoreKeys []client.ObjectKey,
 ) client.Client {
 	return &ExtendedClient{
-		Client:          baseClient,
-		barmanObjectKey: objectStoreKey,
-		mux:             &sync.Mutex{},
+		Client:           baseClient,
+		barmanObjectKeys: objectStoreKeys,
+		mux:              &sync.Mutex{},
 	}
 }
 
 func (e *ExtendedClient) refreshTTL(ctx context.Context) error {
-	var object v1.ObjectStore
-	if err := e.Get(ctx, e.barmanObjectKey, &object); err != nil {
-		return fmt.Errorf("failed to get the object store while refreshing the TTL parameter: %w", err)
+	minTTL := math.MaxInt
+
+	for _, key := range e.barmanObjectKeys {
+		var object v1.ObjectStore
+
+		if err := e.Get(ctx, key, &object); err != nil {
+			return fmt.Errorf("failed to get the object store while refreshing the TTL parameter: %w", err)
+		}
+
+		currentTTL := object.Spec.InstanceSidecarConfiguration.GetCacheTTL()
+		if currentTTL < minTTL {
+			minTTL = currentTTL
+		}
 	}
 
-	e.ttl = object.Spec.InstanceSidecarConfiguration.GetCacheTTL()
-
+	e.ttl = minTTL
 	return nil
 }
 

internal/cnpgi/instance/internal/client/client_test.go

@@ -55,7 +55,9 @@ var _ = Describe("ExtendedClient Get", func() {
 		baseClient := fake.NewClientBuilder().
 			WithScheme(scheme).
 			WithObjects(secretInClient, objectStore).Build()
-		extendedClient = NewExtendedClient(baseClient, client.ObjectKeyFromObject(objectStore)).(*ExtendedClient)
+		extendedClient = NewExtendedClient(baseClient, []client.ObjectKey{
+			client.ObjectKeyFromObject(objectStore),
+		}).(*ExtendedClient)
 	})
 
 	It("returns secret from cache if not expired", func(ctx SpecContext) {

internal/cnpgi/instance/manager.go

@@ -9,6 +9,7 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -33,20 +34,16 @@ func Start(ctx context.Context) error {
 	setupLog := log.FromContext(ctx)
 	setupLog.Info("Starting barman cloud instance plugin")
 	namespace := viper.GetString("namespace")
-	boName := viper.GetString("barman-object-name")
 	clusterName := viper.GetString("cluster-name")
 	podName := viper.GetString("pod-name")
 
-	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
+	barmanObjectName := viper.GetString("barman-object-name")
+	recoveryBarmanObjectName := viper.GetString("recovery-barman-object-name")
+
+	controllerOptions := ctrl.Options{
 		Scheme: scheme,
 		Cache: cache.Options{
 			ByObject: map[client.Object]cache.ByObject{
-				&barmancloudv1.ObjectStore{}: {
-					Field: fields.OneTermEqualSelector("metadata.name", boName),
-					Namespaces: map[string]cache.Config{
-						namespace: {},
-					},
-				},
 				&cnpgv1.Cluster{}: {
 					Field: fields.OneTermEqualSelector("metadata.name", clusterName),
 					Namespaces: map[string]cache.Config{
@@ -62,7 +59,23 @@ func Start(ctx context.Context) error {
 				},
 			},
 		},
-	})
+	}
+
+	if len(recoveryBarmanObjectName) == 0 {
+		controllerOptions.Cache.ByObject[&barmancloudv1.ObjectStore{}] = cache.ByObject{
+			Field: fields.OneTermEqualSelector("metadata.name", barmanObjectName),
+			Namespaces: map[string]cache.Config{
+				namespace: {},
+			},
+		}
+	} else {
+		controllerOptions.Client.Cache.DisableFor = append(
+			controllerOptions.Client.Cache.DisableFor,
+			&barmancloudv1.ObjectStore{},
+		)
+	}
+
+	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), controllerOptions)
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
 		return err
@@ -70,23 +83,39 @@ func Start(ctx context.Context) error {
 
 	barmanObjectKey := client.ObjectKey{
 		Namespace: namespace,
-		Name:      boName,
+		Name:      barmanObjectName,
+	}
+	recoveryBarmanObjectKey := client.ObjectKey{
+		Namespace: namespace,
+		Name:      recoveryBarmanObjectName,
+	}
+
+	involvedObjectStores := make([]types.NamespacedName, 0, 2)
+	if len(barmanObjectName) > 0 {
+		involvedObjectStores = append(involvedObjectStores, barmanObjectKey)
+	}
+	if len(recoveryBarmanObjectName) > 0 {
+		involvedObjectStores = append(involvedObjectStores, recoveryBarmanObjectKey)
 	}
 
 	if err := mgr.Add(&CNPGI{
-		Client: extendedclient.NewExtendedClient(mgr.GetClient(), barmanObjectKey),
+		Client: extendedclient.NewExtendedClient(mgr.GetClient(), involvedObjectStores),
 		ClusterObjectKey: client.ObjectKey{
 			Namespace: namespace,
 			Name:      clusterName,
 		},
-		BarmanObjectKey: barmanObjectKey,
-		ServerName:      viper.GetString("server-name"),
-		InstanceName:    podName,
+		InstanceName: podName,
 		// TODO: improve
 		PGDataPath:     viper.GetString("pgdata"),
 		PGWALPath:      path.Join(viper.GetString("pgdata"), "pg_wal"),
 		SpoolDirectory: viper.GetString("spool-directory"),
 		PluginPath:     viper.GetString("plugin-path"),
+
+		BarmanObjectKey: barmanObjectKey,
+		ServerName:      viper.GetString("server-name"),
+
+		RecoveryBarmanObjectKey: recoveryBarmanObjectKey,
+		RecoveryServerName:      viper.GetString("recovery-server-name"),
 	}); err != nil {
 		setupLog.Error(err, "unable to create CNPGI runnable")
 		return err

internal/cnpgi/instance/start.go

@@ -15,8 +15,6 @@ import (
 // CNPGI is the implementation of the PostgreSQL sidecar
 type CNPGI struct {
 	Client           client.Client
-	BarmanObjectKey  client.ObjectKey
-	ServerName       string
 	ClusterObjectKey client.ObjectKey
 	PGDataPath       string
 	PGWALPath        string
@@ -24,20 +22,30 @@ type CNPGI struct {
 	// mutually exclusive with serverAddress
 	PluginPath   string
 	InstanceName string
+
+	BarmanObjectKey client.ObjectKey
+	ServerName      string
+
+	RecoveryBarmanObjectKey client.ObjectKey
+	RecoveryServerName      string
 }
 
 // Start starts the GRPC service
 func (c *CNPGI) Start(ctx context.Context) error {
 	enrich := func(server *grpc.Server) error {
 		wal.RegisterWALServer(server, common.WALServiceImplementation{
-			BarmanObjectKey:  c.BarmanObjectKey,
 			ClusterObjectKey: c.ClusterObjectKey,
-			ServerName:       c.ServerName,
 			InstanceName:     c.InstanceName,
 			Client:           c.Client,
 			SpoolDirectory:   c.SpoolDirectory,
 			PGDataPath:       c.PGDataPath,
 			PGWALPath:        c.PGWALPath,
+
+			BarmanObjectKey: c.BarmanObjectKey,
+			ServerName:      c.ServerName,
+
+			RecoveryBarmanObjectKey: c.RecoveryBarmanObjectKey,
+			RecoveryServerName:      c.RecoveryServerName,
 		})
 		backup.RegisterBackupServer(server, BackupServiceImplementation{
 			Client:           c.Client,

internal/cnpgi/operator/config/config.go

@@ -47,7 +47,7 @@ type PluginConfiguration struct {
 	BarmanObjectName         string
 	ServerName               string
 	RecoveryBarmanObjectName string
-	RecoveryBarmanServerName string
+	RecoveryServerName       string
 }
 
 // NewFromCluster extracts the configuration from the cluster
@@ -82,7 +82,7 @@ func NewFromCluster(cluster *cnpgv1.Cluster) *PluginConfiguration {
 		BarmanObjectName: helper.Parameters["barmanObjectName"],
 		ServerName:       serverName,
 		// used for restore/wal_restore
-		RecoveryBarmanServerName: recoveryServerName,
+		RecoveryServerName:       recoveryServerName,
 		RecoveryBarmanObjectName: recoveryBarmanObjectName,
 	}
 

internal/cnpgi/operator/lifecycle.go

@@ -115,13 +115,6 @@ func reconcileJob(
 		return nil, nil
 	}
 
-	// Since we're recovering from an existing object store,
-	// we set our primary object store name to the recovery one.
-	// This won't be needed anymore when wal-restore will be able
-	// to check two object stores
-	pluginConfiguration.BarmanObjectName = pluginConfiguration.RecoveryBarmanObjectName
-	pluginConfiguration.ServerName = pluginConfiguration.RecoveryBarmanServerName
-
 	var job batchv1.Job
 	if err := decoder.DecodeObject(
 		request.GetObjectDefinition(),
@@ -219,14 +212,6 @@ func reconcilePodSpec(
 			Name:  "CLUSTER_NAME",
 			Value: cluster.Name,
 		},
-		{
-			Name:  "BARMAN_OBJECT_NAME",
-			Value: cfg.BarmanObjectName,
-		},
-		{
-			Name:  "SERVER_NAME",
-			Value: cfg.ServerName,
-		},
 		{
 			// TODO: should we really use this one?
 			// should we mount an emptyDir volume just for that?
@@ -235,6 +220,32 @@ func reconcilePodSpec(
 		},
 	}
 
+	if len(cfg.BarmanObjectName) > 0 {
+		envs = append(envs,
+			corev1.EnvVar{
+				Name:  "BARMAN_OBJECT_NAME",
+				Value: cfg.BarmanObjectName,
+			},
+			corev1.EnvVar{
+				Name:  "SERVER_NAME",
+				Value: cfg.ServerName,
+			},
+		)
+	}
+
+	if len(cfg.RecoveryBarmanObjectName) > 0 {
+		envs = append(envs,
+			corev1.EnvVar{
+				Name:  "RECOVERY_BARMAN_OBJECT_NAME",
+				Value: cfg.RecoveryBarmanObjectName,
+			},
+			corev1.EnvVar{
+				Name:  "RECOVERY_SERVER_NAME",
+				Value: cfg.RecoveryServerName,
+			},
+		)
+	}
+
 	baseProbe := &corev1.Probe{
 		FailureThreshold: 3,
 		ProbeHandler: corev1.ProbeHandler{

internal/cnpgi/operator/reconciler.go

@@ -15,7 +15,6 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	barmancloudv1 "github.com/cloudnative-pg/plugin-barman-cloud/api/v1"
-	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/metadata"
 	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator/config"
 	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator/specs"
 )
@@ -78,7 +77,6 @@ func (r ReconcilerImplementation) Pre(
 
 	var barmanObjects []barmancloudv1.ObjectStore
 
-	// this could be empty during recoveries
 	if pluginConfiguration.BarmanObjectName != "" {
 		var barmanObject barmancloudv1.ObjectStore
 		if err := r.Client.Get(ctx, client.ObjectKey{
@@ -86,7 +84,10 @@ func (r ReconcilerImplementation) Pre(
 			Name:      pluginConfiguration.BarmanObjectName,
 		}, &barmanObject); err != nil {
 			if apierrs.IsNotFound(err) {
-				contextLogger.Info("barman object configuration not found, requeuing")
+				contextLogger.Info(
+					"barman object configuration not found, requeuing",
+					"name", pluginConfiguration.BarmanObjectName,
+					"namespace", cluster.Namespace)
 				return &reconciler.ReconcilerHooksResult{
 					Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_REQUEUE,
 				}, nil
@@ -98,15 +99,26 @@ func (r ReconcilerImplementation) Pre(
 		barmanObjects = append(barmanObjects, barmanObject)
 	}
 
-	if barmanObject, err := r.getRecoveryBarmanObject(ctx, &cluster); err != nil {
-		if apierrs.IsNotFound(err) {
-			contextLogger.Info("barman recovery object configuration not found, requeuing")
-			return &reconciler.ReconcilerHooksResult{
-				Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_REQUEUE,
-			}, nil
+	if pluginConfiguration.RecoveryBarmanObjectName != "" {
+		var barmanObject barmancloudv1.ObjectStore
+		if err := r.Client.Get(ctx, client.ObjectKey{
+			Namespace: cluster.Namespace,
+			Name:      pluginConfiguration.RecoveryBarmanObjectName,
+		}, &barmanObject); err != nil {
+			if apierrs.IsNotFound(err) {
+				contextLogger.Info(
+					"barman recovery object configuration not found, requeuing",
+					"name", pluginConfiguration.RecoveryBarmanObjectName,
+					"namespace", cluster.Namespace,
+				)
+				return &reconciler.ReconcilerHooksResult{
+					Behavior: reconciler.ReconcilerHooksResult_BEHAVIOR_REQUEUE,
+				}, nil
+			}
+			return nil, err
 		}
-	} else if barmanObject != nil {
-		barmanObjects = append(barmanObjects, *barmanObject)
+
+		barmanObjects = append(barmanObjects, barmanObject)
 	}
 
 	var additionalSecretNames []string
@@ -124,30 +136,6 @@ func (r ReconcilerImplementation) Pre(
 	}, nil
 }
 
-func (r ReconcilerImplementation) getRecoveryBarmanObject(
-	ctx context.Context,
-	cluster *cnpgv1.Cluster,
-) (*barmancloudv1.ObjectStore, error) {
-	recoveryConfig := cluster.GetRecoverySourcePlugin()
-	if recoveryConfig != nil && recoveryConfig.Name == metadata.PluginName {
-		// TODO: refactor -> cnpg-i-machinery should be able to help us on getting
-		// the configuration for a recovery plugin
-		if recoveryObjectStore, ok := recoveryConfig.Parameters["barmanObjectName"]; ok {
-			var barmanObject barmancloudv1.ObjectStore
-			if err := r.Client.Get(ctx, client.ObjectKey{
-				Namespace: cluster.Namespace,
-				Name:      recoveryObjectStore,
-			}, &barmanObject); err != nil {
-				return nil, err
-			}
-
-			return &barmanObject, nil
-		}
-	}
-
-	return nil, nil
-}
-
 // Post implements the reconciler interface
 func (r ReconcilerImplementation) Post(
 	_ context.Context,

internal/cnpgi/operator/specs/role.go

@@ -27,24 +27,10 @@ func BuildRole(
 	}
 
 	secretsSet := stringset.New()
-	for _, barmanObject := range barmanObjects {
-		role.Rules = append(role.Rules, rbacv1.PolicyRule{
-			APIGroups: []string{
-				"barmancloud.cnpg.io",
-			},
-			Verbs: []string{
-				"get",
-				"watch",
-				"list",
-			},
-			Resources: []string{
-				"objectstores",
-			},
-			ResourceNames: []string{
-				barmanObject.Name,
-			},
-		})
+	barmanObjectsSet := stringset.New()
 
+	for _, barmanObject := range barmanObjects {
+		barmanObjectsSet.Put(barmanObject.Name)
 		for _, secret := range CollectSecretNamesFromCredentials(&barmanObject.Spec.Configuration.BarmanCredentials) {
 			secretsSet.Put(secret)
 		}
@@ -54,6 +40,21 @@ func BuildRole(
 		secretsSet.Put(secret)
 	}
 
+	role.Rules = append(role.Rules, rbacv1.PolicyRule{
+		APIGroups: []string{
+			"barmancloud.cnpg.io",
+		},
+		Verbs: []string{
+			"get",
+			"watch",
+			"list",
+		},
+		Resources: []string{
+			"objectstores",
+		},
+		ResourceNames: barmanObjectsSet.ToSortedList(),
+	})
+
 	role.Rules = append(role.Rules, rbacv1.PolicyRule{
 		APIGroups: []string{
 			"",

internal/cnpgi/restore/manager.go

@@ -32,7 +32,12 @@ func Start(ctx context.Context) error {
 	setupLog.Info("Starting barman cloud instance plugin")
 	namespace := viper.GetString("namespace")
 	clusterName := viper.GetString("cluster-name")
-	boName := viper.GetString("barman-object-name")
+
+	recoveryBarmanObjectName := viper.GetString("recovery-barman-object-name")
+	recoveryServerName := viper.GetString("recovery-server-name")
+
+	barmanObjectName := viper.GetString("barman-object-name")
+	serverName := viper.GetString("server-name")
 
 	objs := map[client.Object]cache.ByObject{
 		&cnpgv1.Cluster{}: {
@@ -43,9 +48,9 @@ func Start(ctx context.Context) error {
 		},
 	}
 
-	if boName != "" {
+	if recoveryBarmanObjectName != "" {
 		objs[&barmancloudv1.ObjectStore{}] = cache.ByObject{
-			Field: fields.OneTermEqualSelector("metadata.name", boName),
+			Field: fields.OneTermEqualSelector("metadata.name", recoveryBarmanObjectName),
 			Namespaces: map[string]cache.Config{
 				namespace: {},
 			},
@@ -74,10 +79,6 @@ func Start(ctx context.Context) error {
 	if err := mgr.Add(&CNPGI{
 		PluginPath:     viper.GetString("plugin-path"),
 		SpoolDirectory: viper.GetString("spool-directory"),
-		BarmanObjectKey: client.ObjectKey{
-			Namespace: namespace,
-			Name:      boName,
-		},
 		ClusterObjectKey: client.ObjectKey{
 			Namespace: namespace,
 			Name:      clusterName,
@@ -85,7 +86,18 @@ func Start(ctx context.Context) error {
 		Client:       mgr.GetClient(),
 		PGDataPath:   viper.GetString("pgdata"),
 		InstanceName: viper.GetString("pod-name"),
-		ServerName:   viper.GetString("server-name"),
+
+		ServerName: serverName,
+		BarmanObjectKey: client.ObjectKey{
+			Namespace: namespace,
+			Name:      barmanObjectName,
+		},
+
+		RecoveryServerName: recoveryServerName,
+		RecoveryBarmanObjectKey: client.ObjectKey{
+			Namespace: namespace,
+			Name:      recoveryBarmanObjectName,
+		},
 	}); err != nil {
 		setupLog.Error(err, "unable to create CNPGI runnable")
 		return err

internal/cnpgi/restore/restore.go

@@ -43,9 +43,16 @@ const (
 // JobHookImpl is the implementation of the restore job hooks
 type JobHookImpl struct {
 	restore.UnimplementedRestoreJobHooksServer
-	Client               client.Client
-	ClusterObjectKey     client.ObjectKey
-	BackupToRestore      client.ObjectKey
+
+	Client           client.Client
+	ClusterObjectKey client.ObjectKey
+
+	BarmanObjectKey types.NamespacedName
+	ServerName      string
+
+	RecoveryBarmanObjectKey types.NamespacedName
+	RecoveryServerName      string
+
 	SpoolDirectory       string
 	PgDataPath           string
 	PgWalFolderToSymlink string
@@ -80,38 +87,17 @@ func (impl JobHookImpl) Restore(
 		return nil, err
 	}
 
-	recoveryPluginConfiguration := cluster.GetRecoverySourcePlugin()
-
 	var recoveryObjectStore barmancloudv1.ObjectStore
-	if err := impl.Client.Get(ctx, types.NamespacedName{
-		Namespace: cluster.Namespace,
-		// TODO: refactor -> cnpg-i-machinery should be able to help us on getting
-		// the configuration for a recovery plugin
-		Name: recoveryPluginConfiguration.Parameters["barmanObjectName"],
-	}, &recoveryObjectStore); err != nil {
+	if err := impl.Client.Get(ctx, impl.RecoveryBarmanObjectKey, &recoveryObjectStore); err != nil {
 		return nil, err
 	}
 
-	var targetObjectStoreName types.NamespacedName
-	for _, plugin := range cluster.Spec.Plugins {
-		if plugin.IsEnabled() && plugin.Name == metadata.PluginName {
-			targetObjectStoreName = types.NamespacedName{
-				Namespace: cluster.Namespace,
-				Name:      plugin.Parameters["barmanObjectName"],
-			}
-		}
-	}
-
-	var targetObjectStore barmancloudv1.ObjectStore
-	if targetObjectStoreName.Name != "" {
-		if err := impl.Client.Get(ctx, targetObjectStoreName, &targetObjectStore); err != nil {
+	if impl.BarmanObjectKey.Name != "" {
+		var targetObjectStore barmancloudv1.ObjectStore
+		if err := impl.Client.Get(ctx, impl.BarmanObjectKey, &targetObjectStore); err != nil {
 			return nil, err
 		}
-	}
 
-	// Before starting the restore we check if the archive destination is safe to use,
-	// otherwise we stop creating the cluster
-	if targetObjectStoreName.Name != "" {
 		if err := impl.checkBackupDestination(ctx, &cluster, &targetObjectStore.Spec.Configuration); err != nil {
 			return nil, err
 		}
@@ -123,6 +109,7 @@ func (impl JobHookImpl) Restore(
 		impl.Client,
 		&cluster,
 		&recoveryObjectStore.Spec.Configuration,
+		impl.RecoveryServerName,
 	)
 	if err != nil {
 		return nil, err
@@ -353,30 +340,13 @@ func loadBackupObjectFromExternalCluster(
 	typedClient client.Client,
 	cluster *cnpgv1.Cluster,
 	recoveryObjectStore *api.BarmanObjectStoreConfiguration,
+	serverName string,
 ) (*cnpgv1.Backup, []string, error) {
 	contextLogger := log.FromContext(ctx)
-	sourceName := cluster.Spec.Bootstrap.Recovery.Source
-
-	if sourceName == "" {
-		return nil, nil, fmt.Errorf("recovery source not specified")
-	}
-
-	server, found := cluster.ExternalCluster(sourceName)
-	if !found {
-		return nil, nil, fmt.Errorf("missing external cluster: %v", sourceName)
-	}
-
-	// TODO: document this, should this be in the helper?
-	var serverName string
-	if pluginServerName, ok := server.PluginConfiguration.Parameters["serverName"]; ok {
-		serverName = pluginServerName
-	} else {
-		serverName = server.Name
-	}
 
 	contextLogger.Info("Recovering from external cluster",
-		"sourceName", sourceName,
-		"serverName", serverName)
+		"serverName", serverName,
+		"objectStore", recoveryObjectStore)
 
 	env, err := barmanCredentials.EnvSetRestoreCloudCredentials(
 		ctx,

internal/cnpgi/restore/start.go

@@ -15,14 +15,20 @@ import (
 
 // CNPGI is the implementation of the PostgreSQL sidecar
 type CNPGI struct {
-	PluginPath       string
-	SpoolDirectory   string
-	BarmanObjectKey  client.ObjectKey
+	PluginPath     string
+	SpoolDirectory string
+
+	BarmanObjectKey client.ObjectKey
+	ServerName      string
+
+	RecoveryBarmanObjectKey client.ObjectKey
+	RecoveryServerName      string
+
 	ClusterObjectKey client.ObjectKey
-	Client           client.Client
-	PGDataPath       string
-	InstanceName     string
-	ServerName       string
+
+	Client       client.Client
+	PGDataPath   string
+	InstanceName string
 }
 
 // Start starts the GRPC service
@@ -32,14 +38,18 @@ func (c *CNPGI) Start(ctx context.Context) error {
 
 	enrich := func(server *grpc.Server) error {
 		wal.RegisterWALServer(server, common.WALServiceImplementation{
-			BarmanObjectKey:  c.BarmanObjectKey,
 			ClusterObjectKey: c.ClusterObjectKey,
 			InstanceName:     c.InstanceName,
 			Client:           c.Client,
 			SpoolDirectory:   c.SpoolDirectory,
 			PGDataPath:       c.PGDataPath,
 			PGWALPath:        path.Join(c.PGDataPath, "pg_wal"),
-			ServerName:       c.ServerName,
+
+			BarmanObjectKey: c.BarmanObjectKey,
+			ServerName:      c.ServerName,
+
+			RecoveryBarmanObjectKey: c.RecoveryBarmanObjectKey,
+			RecoveryServerName:      c.RecoveryServerName,
 		})
 
 		restore.RegisterRestoreJobHooksServer(server, &JobHookImpl{
@@ -48,6 +58,12 @@ func (c *CNPGI) Start(ctx context.Context) error {
 			SpoolDirectory:       c.SpoolDirectory,
 			PgDataPath:           c.PGDataPath,
 			PgWalFolderToSymlink: PgWalVolumePgWalPath,
+
+			BarmanObjectKey: c.BarmanObjectKey,
+			ServerName:      c.ServerName,
+
+			RecoveryBarmanObjectKey: c.RecoveryBarmanObjectKey,
+			RecoveryServerName:      c.RecoveryServerName,
 		})
 
 		common.AddHealthCheck(server)