generated from coulomb/repo-seed
66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
"""Development-only file backend for Audit Core.
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This backend intentionally writes local JSONL files under /tmp by default. It
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is useful for wiring integrations before the durable Audit Core archive exists,
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but it is not production audit custody.
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"""
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from __future__ import annotations
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import json
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import os
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from datetime import datetime, timedelta, timezone
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from pathlib import Path
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from audit_core.interface import AuditEvent
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class MockFileAuditBackend:
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"""Append audit events to hourly JSONL files and clean up old files."""
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def __init__(
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self,
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base_dir: str | Path | None = None,
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retention_days: int | None = None,
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now: datetime | None = None,
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) -> None:
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self.base_dir = Path(base_dir or os.environ.get("AUDIT_CORE_MOCK_DIR", "/tmp/audit-core"))
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self.retention_days = int(
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retention_days
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if retention_days is not None
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else os.environ.get("AUDIT_CORE_MOCK_RETENTION_DAYS", "7")
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)
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self._now = now
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def emit(self, event: AuditEvent) -> str:
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self.base_dir.mkdir(parents=True, exist_ok=True)
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self.cleanup_old_files()
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path = self.current_path()
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record = event.as_record()
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with path.open("a", encoding="utf-8") as handle:
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handle.write(json.dumps(record, sort_keys=True, separators=(",", ":")) + "\n")
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return str(path)
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def cleanup_old_files(self) -> list[str]:
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if self.retention_days < 0 or not self.base_dir.exists():
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return []
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cutoff = self.now() - timedelta(days=self.retention_days)
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removed: list[str] = []
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for path in self.base_dir.glob("audit-*.jsonl"):
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try:
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modified = datetime.fromtimestamp(path.stat().st_mtime, tz=timezone.utc)
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except FileNotFoundError:
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continue
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if modified < cutoff:
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path.unlink(missing_ok=True)
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removed.append(str(path))
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return removed
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def current_path(self) -> Path:
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stamp = self.now().strftime("%Y%m%dT%H")
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return self.base_dir / f"audit-{stamp}.jsonl"
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def now(self) -> datetime:
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return self._now or datetime.now(timezone.utc)
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