| """Download pinned public model weights and official gRefCOCO annotations. |
| No model execution, private tokens, or changes to other projects. |
| """ |
| from pathlib import Path |
| import urllib.request,urllib.parse,json,hashlib,time,concurrent.futures |
| ROOT=Path(__file__).resolve().parents[1] |
| ASSETS=ROOT/'assets';ASSETS.mkdir(parents=True,exist_ok=True) |
| def get_json(url): |
| with urllib.request.urlopen(url,timeout=45) as r:return json.load(r) |
| def download(url,path): |
| path=Path(path);path.parent.mkdir(parents=True,exist_ok=True) |
| if path.exists() and path.stat().st_size>0:return str(path) |
| for attempt in range(3): |
| try: |
| with urllib.request.urlopen(url,timeout=90) as r,open(str(path)+'.part','wb') as f: |
| while True: |
| b=r.read(1024*1024) |
| if not b:break |
| f.write(b) |
| Path(str(path)+'.part').replace(path);print('downloaded',str(path),path.stat().st_size,flush=True);return str(path) |
| except Exception: |
| if attempt==2:raise |
| time.sleep(2) |
| def main(): |
| |
| lock=ROOT/'protocol/asset_manifest.json';manifest=json.loads(lock.read_text()) |
| jobs=[] |
| for rel,expected in manifest['file_sha256'].items(): |
| p=Path(rel);assert p.parts[0]=='assets' and '..' not in p.parts |
| if p.parts[1]=='models': |
| meta=manifest['models'][p.parts[2]];prefix='https://huggingface.co/'+meta['repo'];name='/'.join(p.parts[3:]) |
| else: |
| assert p.parts[1]=='grefcoco';meta=manifest['dataset'];prefix='https://huggingface.co/datasets/'+meta['repo'];name='/'.join(p.parts[2:]) |
| jobs.append((prefix+'/resolve/'+meta['revision']+'/'+urllib.parse.quote(name),ROOT/p)) |
| with concurrent.futures.ThreadPoolExecutor(max_workers=4) as ex: |
| for result in ex.map(lambda args:download(*args),jobs):pass |
| for _,path in jobs: |
| h=hashlib.sha256() |
| with path.open('rb') as f: |
| for b in iter(lambda:f.read(1024*1024),b''):h.update(b) |
| assert h.hexdigest()==manifest['file_sha256'][str(path.relative_to(ROOT))],'Asset checksum mismatch: '+str(path) |
| (ASSETS/'asset_manifest.json').write_text(lock.read_text()) |
| print(json.dumps({'status':'ASSETS_VERIFIED','files':len(jobs),'lock':str(lock)}),flush=True) |
| if __name__=='__main__':main() |
|
|
