68 lines
1.9 KiB
Python
68 lines
1.9 KiB
Python
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#!/usr/bin/env python3
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"""Run Docker boot-time config migrations safely."""
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from __future__ import annotations
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import shutil
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import sys
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Iterable
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from hermes_cli.config import (
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check_config_version,
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get_config_path,
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get_env_path,
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migrate_config,
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)
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from utils import env_var_enabled
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def _backup_path(path: Path, stamp: str) -> Path:
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base = path.with_name(f"{path.name}.bak-{stamp}")
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if not base.exists():
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return base
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for index in range(1, 1000):
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candidate = path.with_name(f"{path.name}.bak-{stamp}.{index}")
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if not candidate.exists():
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return candidate
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raise RuntimeError(f"could not choose a backup path for {path}")
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def _backup_existing(paths: Iterable[Path]) -> list[Path]:
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stamp = datetime.now(timezone.utc).strftime("%Y%m%dT%H%M%SZ")
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backups: list[Path] = []
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for path in paths:
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if not path.is_file():
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continue
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dest = _backup_path(path, stamp)
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shutil.copy2(path, dest)
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backups.append(dest)
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return backups
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def main() -> int:
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if env_var_enabled("HERMES_SKIP_CONFIG_MIGRATION"):
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print("[config-migrate] HERMES_SKIP_CONFIG_MIGRATION is set; skipping config migration")
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return 0
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current_ver, latest_ver = check_config_version()
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if current_ver >= latest_ver:
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return 0
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backups = _backup_existing((get_config_path(), get_env_path()))
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backup_text = ", ".join(str(path) for path in backups) if backups else "none"
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print(
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f"[config-migrate] Migrating config schema {current_ver} -> {latest_ver}; "
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f"backups: {backup_text}"
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)
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migrate_config(interactive=False, quiet=False)
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return 0
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if __name__ == "__main__":
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try:
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raise SystemExit(main())
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except Exception as exc:
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print(f"[config-migrate] ERROR: {exc}", file=sys.stderr)
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raise SystemExit(1)
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