chore: update resource storage type comment

proto/gen/store/resource.pb.go

@@ -26,9 +26,12 @@ type ResourceStorageType int32
 
 const (
 	ResourceStorageType_RESOURCE_STORAGE_TYPE_UNSPECIFIED ResourceStorageType = 0
-	ResourceStorageType_LOCAL                             ResourceStorageType = 1
-	ResourceStorageType_S3                                ResourceStorageType = 2
-	ResourceStorageType_EXTERNAL                          ResourceStorageType = 3
+	// Resource is stored locally. AKA, local file system.
+	ResourceStorageType_LOCAL ResourceStorageType = 1
+	// Resource is stored in S3.
+	ResourceStorageType_S3 ResourceStorageType = 2
+	// Resource is stored in an external storage. The reference is a URL.
+	ResourceStorageType_EXTERNAL ResourceStorageType = 3
 )
 
 // Enum value maps for ResourceStorageType.

proto/store/resource.proto

@@ -9,8 +9,11 @@ option go_package = "gen/store";
 
 enum ResourceStorageType {
   RESOURCE_STORAGE_TYPE_UNSPECIFIED = 0;
+  // Resource is stored locally. AKA, local file system.
   LOCAL = 1;
+  // Resource is stored in S3.
   S3 = 2;
+  // Resource is stored in an external storage. The reference is a URL.
   EXTERNAL = 3;
 }
 

server/router/api/v1/resource_service.go

@@ -129,17 +129,14 @@ func (s *APIV1Service) GetResource(ctx context.Context, request *v1pb.GetResourc
 }
 
 func (s *APIV1Service) GetResourceBinary(ctx context.Context, request *v1pb.GetResourceBinaryRequest) (*httpbody.HttpBody, error) {
-	resourceFind := &store.FindResource{
-		GetBlob: true,
-	}
-	if request.Name != "" {
-		resourceUID, err := ExtractResourceUIDFromName(request.Name)
-		if err != nil {
-			return nil, status.Errorf(codes.InvalidArgument, "invalid resource id: %v", err)
-		}
-		resourceFind.UID = &resourceUID
+	resourceUID, err := ExtractResourceUIDFromName(request.Name)
+	if err != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "invalid resource id: %v", err)
 	}
-	resource, err := s.Store.GetResource(ctx, resourceFind)
+	resource, err := s.Store.GetResource(ctx, &store.FindResource{
+		GetBlob: true,
+		UID:     &resourceUID,
+	})
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, "failed to get resource: %v", err)
 	}
@@ -366,7 +363,7 @@ func SaveResourceBlob(ctx context.Context, s *store.Store, create *store.Resourc
 }
 
 func (s *APIV1Service) GetResourceBlob(resource *store.Resource) ([]byte, error) {
-	blob := resource.Blob
+	// For local storage, read the file from the local disk.
 	if resource.StorageType == storepb.ResourceStorageType_LOCAL {
 		resourcePath := filepath.FromSlash(resource.Reference)
 		if !filepath.IsAbs(resourcePath) {
@@ -381,12 +378,14 @@ func (s *APIV1Service) GetResourceBlob(resource *store.Resource) ([]byte, error)
 			return nil, errors.Wrap(err, "failed to open the file")
 		}
 		defer file.Close()
-		blob, err = io.ReadAll(file)
+		blob, err := io.ReadAll(file)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to read the file")
 		}
+		return blob, nil
 	}
-	return blob, nil
+	// For database storage, return the blob from the database.
+	return resource.Blob, nil
 }
 
 const (