Add etag to the object attribute struct

pkg/filestore/filestore.go

@@ -27,6 +27,7 @@ var (
 type ObjectAttrs struct {
 	Path      string
 	Size      int64
+	Etag      string
 	UpdatedAt int64
 }
 

pkg/filestore/gcs/gcs.go

@@ -144,6 +144,7 @@ func (s *Store) List(ctx context.Context, prefix string) ([]filestore.ObjectAttr
 		object := filestore.ObjectAttrs{
 			Path:      attrs.Name,
 			Size:      attrs.Size,
+			Etag:      attrs.Etag,
 			UpdatedAt: attrs.Updated.Unix(),
 		}
 		objects = append(objects, object)

pkg/filestore/minio/minio.go

@@ -154,6 +154,7 @@ func (s *Store) List(ctx context.Context, prefix string) ([]filestore.ObjectAttr
 		objects = append(objects, filestore.ObjectAttrs{
 			Path:      o.Key,
 			Size:      o.Size,
+			Etag:      o.ETag,
 			UpdatedAt: o.LastModified.Unix(),
 		})
 	}

pkg/filestore/s3/s3.go

@@ -184,6 +184,7 @@ func (s *Store) List(ctx context.Context, prefix string) ([]filestore.ObjectAttr
 			objects = append(objects, filestore.ObjectAttrs{
 				Path:      aws.ToString(obj.Key),
 				Size:      obj.Size,
+				Etag:      aws.ToString(obj.ETag),
 				UpdatedAt: aws.ToTime(obj.LastModified).Unix(),
 			})
 		}