| """Check every downloaded file against the sha256 Hugging Face records for it (LFS files) at the pinned revision. |
| usage: v2_sha.py <repo_id> <revision> <local_dir> [workers]""" |
| import hashlib, os, sys |
| from multiprocessing import Pool |
| from huggingface_hub import HfApi |
| repo, rev, local = sys.argv[1:4]; nw = int(sys.argv[4]) if len(sys.argv) > 4 else 32 |
| def sha(p): |
| h = hashlib.sha256() |
| with open(p, "rb") as f: |
| for b in iter(lambda: f.read(1 << 24), b""): h.update(b) |
| return p, h.hexdigest(), os.path.getsize(p) |
| if __name__ == "__main__": |
| info = HfApi().dataset_info(repo, revision=rev, files_metadata=True) |
| want = {s.rfilename: (s.lfs.sha256 if s.lfs else None, s.size) for s in info.siblings} |
| files = [f for f in want if want[f][0]] |
| missing = [f for f in files if not os.path.exists(f"{local}/{f}")] |
| print(f"{len(want)} files at {rev}, {len(files)} LFS; missing locally {missing}", flush=True) |
| bad = [] |
| with Pool(nw) as pool: |
| for n, (p, h, sz) in enumerate(pool.imap_unordered(sha, [f"{local}/{f}" for f in files if f not in missing]), 1): |
| f = os.path.relpath(p, local) |
| if h != want[f][0] or sz != want[f][1]: bad.append(f) |
| if n % 32 == 0: print(f" {n}/{len(files)}", flush=True) |
| print(f"sha256+size mismatches: {len(bad)} {bad}\n{'ALL FILES MATCH' if not bad and not missing else '*** MISMATCH ***'}") |
|
|
