working commit

app/operator/blob.go

@@ -104,6 +104,7 @@ type PatchUploadParams struct {
 }
 type PatchUploadResult struct {
 	Location string
+	Range    string
 }
 
 // The response for each successful chunk upload MUST be 202 Accepted, and MUST have the following headers:
@@ -125,6 +126,16 @@ func (oper *Operator) PatchUpload(ctx context.Context, params *PatchUploadParams
 		return res, http.StatusBadRequest, err
 	}
 
+	exists, uploadSize, err := oper.store.UploadExists(params.Name, params.Reference)
+	if err != nil {
+		return res, http.StatusInternalServerError, err
+	}
+	if exists {
+		res.Location = fmt.Sprintf("/v2/%s/uploads/%s", params.Name, params.Reference)
+		res.Range = fmt.Sprintf("0-%d", uploadSize-1)
+		return res, http.StatusNoContent, err
+	}
+
 	if params.ContentType != "application/octet-stream" {
 		err = fmt.Errorf("Wrong Conten-Type header: %s", params.ContentType)
 		return res, http.StatusBadRequest, err
@@ -150,7 +161,7 @@ func (oper *Operator) PatchUpload(ctx context.Context, params *PatchUploadParams
 		return res, http.StatusInternalServerError, err
 	}
 	res.Location = fmt.Sprintf("/v2/%s/uploads/%s", params.Name, params.Reference)
-
+	res.Range = fmt.Sprintf("0-%d", recsize-1)
 	return res, http.StatusAccepted, err
 }