ComfyUI/app/assets/services/hashing.py
Luke Mino-Altherr 74d6e9d3cf refactor(assets): extract services layer from manager and helpers
- Create services/ package: asset_management, bulk_ingest, file_utils, hashing, ingest, metadata_extract, path_utils, schemas, tagging
- Move business logic out of helpers.py into service modules
- Remove manager.py and hashing.py (absorbed into services)
- Add blake3 to requirements.txt
- Add comprehensive service-layer tests

Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019c9209-37af-757a-b6e4-af59b4267362
2026-02-24 18:57:55 -08:00

54 lines
1.2 KiB
Python

import asyncio
import os
from typing import IO
from blake3 import blake3
DEFAULT_CHUNK = 8 * 1024 * 1024
def compute_blake3_hash(
fp: str | IO[bytes],
chunk_size: int = DEFAULT_CHUNK,
) -> str:
if hasattr(fp, "read"):
return _hash_file_obj(fp, chunk_size)
with open(os.fspath(fp), "rb") as f:
return _hash_file_obj(f, chunk_size)
async def compute_blake3_hash_async(
fp: str | IO[bytes],
chunk_size: int = DEFAULT_CHUNK,
) -> str:
if hasattr(fp, "read"):
return await asyncio.to_thread(compute_blake3_hash, fp, chunk_size)
def _worker() -> str:
with open(os.fspath(fp), "rb") as f:
return _hash_file_obj(f, chunk_size)
return await asyncio.to_thread(_worker)
def _hash_file_obj(file_obj: IO, chunk_size: int = DEFAULT_CHUNK) -> str:
if chunk_size <= 0:
chunk_size = DEFAULT_CHUNK
orig_pos = file_obj.tell()
try:
if orig_pos != 0:
file_obj.seek(0)
h = blake3()
while True:
chunk = file_obj.read(chunk_size)
if not chunk:
break
h.update(chunk)
return h.hexdigest()
finally:
file_obj.seek(orig_pos)