Fix torrent hash generation to work in mixed stacks

endpoints/v2/blob.py

@@ -3,6 +3,8 @@ import re
 
 from flask import make_response, url_for, request, redirect, Response, abort as flask_abort
 
+import resumablehashlib
+
 from app import storage, app
 from auth.registry_jwt_auth import process_registry_jwt_auth
 from data import model, database
@@ -224,9 +226,9 @@ def _upload_chunk(namespace, repo_name, upload_uuid):
 
     piece_hasher = None
     # TODO remove this when all in-progress blob uploads reliably contain piece hashes
-    if start_offset == 0 or found.piece_sha_state is not None:
-      piece_hasher = PieceHasher(app.config['TORRENT_PIECE_SIZE'], start_offset, found.piece_hashes,
-                                 found.piece_sha_state)
+    if start_offset == 0:
+      piece_hasher = PieceHasher(app.config['TORRENT_PIECE_SIZE'], start_offset, '',
+                                 resumablehashlib.sha1())
       input_fp = wrap_with_handler(input_fp, piece_hasher.update)
 
     # If this is the first chunk and we're starting at the 0 offset, add a handler to gunzip the