63 lines
2.4 KiB
Python
63 lines
2.4 KiB
Python
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#!/usr/bin/env python3
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"""Export a validated, public CCR as JSON for the stdlib node delivery helper.
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Uses the platform's existing PyYAML validator. No credential lookup or live call.
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After CCR status updates, YAML remains the source of truth; export and review its
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new JSON hash before an attended delivery. Draft exports remain non-executable.
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"""
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from __future__ import annotations
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import argparse
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import hashlib
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import importlib.util
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import json
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import os
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from pathlib import Path
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import sys
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from application_backup_credentials import PROFILES, contract
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ROOT = Path(__file__).resolve().parents[1]
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def render(source, application):
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spec = importlib.util.spec_from_file_location("backup_ccr_validator", ROOT / "scripts/credential-change.py")
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validator = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(validator)
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ccr, errors, _ = validator.validate_ccr(source)
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if errors or validator.applier_policy_violations(ccr):
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raise ValueError("invalid_reader_contract")
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policy = validator.policy_artifact_diff(ccr)
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if not policy["matches"]:
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raise ValueError("policy_source_mismatch")
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ccr["source_ccr_sha256"] = hashlib.sha256(source.read_bytes()).hexdigest()
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ccr["policy_sha256"] = hashlib.sha256(validator.generated_policy_hcl(ccr).encode()).hexdigest()
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raw = (json.dumps(ccr, indent=2, sort_keys=True) + "\n").encode()
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contract(raw, application)
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return raw
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--ccr", type=Path, required=True)
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parser.add_argument("--application", choices=PROFILES, required=True)
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parser.add_argument("--output", type=Path, required=True)
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args = parser.parse_args()
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try:
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raw = render(args.ccr, args.application)
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fd = os.open(args.output, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW, 0o600)
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with os.fdopen(fd, "wb") as stream:
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stream.write(raw)
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stream.flush()
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os.fsync(stream.fileno())
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print(json.dumps({"status": "rendered", "application": args.application,
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"ccr_sha256": hashlib.sha256(raw).hexdigest(), "effects": ["public_contract_export"]}))
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return 0
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except Exception: # noqa: BLE001 - metadata-only fixed diagnostics
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print('{"status":"failed","code":"contract_export_failed"}', file=sys.stderr)
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return 1
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if __name__ == "__main__":
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raise SystemExit(main())
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