Storage: Add blob storage interfaces (#90932)

Co-authored-by: Jean-Philippe Quémémer <jeanphilippe.quemener@grafana.com>

pkg/storage/unified/client.go

@@ -12,6 +12,7 @@ import (
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/storage/unified/resource"
 	"github.com/grafana/grafana/pkg/storage/unified/sql"
+	"github.com/prometheus/client_golang/prometheus"
 	"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
 	"gocloud.dev/blob/fileblob"
 	"google.golang.org/grpc"
@@ -24,13 +25,15 @@ func ProvideUnifiedStorageClient(
 	features featuremgmt.FeatureToggles,
 	db infraDB.DB,
 	tracer tracing.Tracer,
+	reg prometheus.Registerer,
 ) (resource.ResourceClient, error) {
 	// See: apiserver.ApplyGrafanaConfig(cfg, features, o)
 	apiserverCfg := cfg.SectionWithEnvOverrides("grafana-apiserver")
 	opts := options.StorageOptions{
-		StorageType: options.StorageType(apiserverCfg.Key("storage_type").MustString(string(options.StorageTypeLegacy))),
-		DataPath:    apiserverCfg.Key("storage_path").MustString(filepath.Join(cfg.DataPath, "grafana-apiserver")),
-		Address:     apiserverCfg.Key("address").MustString(""),
+		StorageType:  options.StorageType(apiserverCfg.Key("storage_type").MustString(string(options.StorageTypeLegacy))),
+		DataPath:     apiserverCfg.Key("storage_path").MustString(filepath.Join(cfg.DataPath, "grafana-apiserver")),
+		Address:      apiserverCfg.Key("address").MustString(""), // client address
+		BlobStoreURL: apiserverCfg.Key("blob_url").MustString(""),
 	}
 	ctx := context.Background()
 
@@ -54,6 +57,9 @@ func ProvideUnifiedStorageClient(
 		}
 		server, err := resource.NewResourceServer(resource.ResourceServerOptions{
 			Backend: backend,
+			Blob: resource.BlobConfig{
+				URL: opts.BlobStoreURL,
+			},
 		})
 		if err != nil {
 			return nil, err
@@ -77,7 +83,7 @@ func ProvideUnifiedStorageClient(
 
 	// Use the local SQL
 	default:
-		server, err := sql.NewResourceServer(ctx, db, cfg, features, tracer)
+		server, err := sql.NewResourceServer(ctx, db, cfg, features, tracer, reg)
 		if err != nil {
 			return nil, err
 		}