from pathlib import Path
import subprocess
p=Path('/home/ps/huobao-vdn/app.py')
s=p.read_text()
anchor='            response.raise_for_status()\n            payload = response.json()\n    finally:'
assert s.count(anchor)==1
replacement='''            if response.status_code == 400:
                rejected = response.json()
                issues = []
                for node, info in (rejected.get('node_errors') or {}).items():
                    for error in info.get('errors', []):
                        issues.append(str(node) + ': ' + str(error.get('message', '')) + ': ' + str(error.get('details', ''))[:300])
                if not issues:
                    issues = [str(rejected.get('error', 'Workflow validation failed'))[:600]]
                raise HTTPException(status_code=400, detail='; '.join(issues)[:1800])
            response.raise_for_status()
            payload = response.json()
    finally:'''
p.write_text(s.replace(anchor,replacement))
subprocess.run(['docker','restart','huobao-vdn-normalizer'],check=True)
print('VDN validation errors now report the failing node')