Zanzana: Refactor remote client initialization (#114142)

* Zanzana: Refactor remote client

* rename config field URL to Addr

* Instrument grpc queries

* fix duplicated field

apps/iam/pkg/app/app.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/prometheus/client_golang/prometheus"
+
 	"github.com/grafana/grafana-app-sdk/app"
 	"github.com/grafana/grafana-app-sdk/logging"
 	"github.com/grafana/grafana-app-sdk/operator"
@@ -12,7 +14,6 @@ import (
 	foldersKind "github.com/grafana/grafana/apps/folder/pkg/apis/folder/v1beta1"
 	"github.com/grafana/grafana/apps/iam/pkg/reconcilers"
 	"github.com/grafana/grafana/pkg/services/authz"
-	"github.com/prometheus/client_golang/prometheus"
 )
 
 var appManifestData = app.ManifestData{
@@ -78,7 +79,7 @@ func New(cfg app.Config) (app.App, error) {
 	folderReconciler, err := reconcilers.NewFolderReconciler(reconcilers.ReconcilerConfig{
 		ZanzanaCfg: appSpecificConfig.ZanzanaClientCfg,
 		Metrics:    metrics,
-	})
+	}, appSpecificConfig.MetricsRegisterer)
 	if err != nil {
 		return nil, fmt.Errorf("unable to create FolderReconciler: %w", err)
 	}

apps/iam/pkg/reconcilers/folder_reconciler.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/prometheus/client_golang/prometheus"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
@@ -35,9 +36,9 @@ type FolderReconciler struct {
 	metrics         *ReconcilerMetrics
 }
 
-func NewFolderReconciler(cfg ReconcilerConfig) (operator.Reconciler, error) {
+func NewFolderReconciler(cfg ReconcilerConfig, reg prometheus.Registerer) (operator.Reconciler, error) {
 	// Create Zanzana client
-	zanzanaClient, err := authz.NewRemoteZanzanaClient("*", cfg.ZanzanaCfg)
+	zanzanaClient, err := authz.NewRemoteZanzanaClient(cfg.ZanzanaCfg, reg)
 
 	if err != nil {
 		return nil, fmt.Errorf("unable to create zanzana client: %w", err)