kitos
c99cc4946a
Task D — Google-style docstrings (Args/Returns) on every public function, method, and class across all 158 Python files in the backend. Zero ruff D violations (pydocstyle Google convention). Task E — Explanatory one-line comment before every code line (~11600 new comments). ruff check passes clean after isort re-sort.
90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
"""Data retention policies — scheduled cleanup of aged records."""
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# Enable future language features for compatibility
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from __future__ import annotations
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# Import logging
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import logging
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# Import datetime, timedelta, timezone from datetime
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from datetime import datetime, timedelta, timezone
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# Import Session from sqlalchemy.orm
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from sqlalchemy.orm import Session
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# Import SessionLocal from app.database
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from app.database import SessionLocal
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# Import AuditLog from app.models.audit
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from app.models.audit import AuditLog
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# Import cleanup_old_notifications from app.services.notification_service
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from app.services.notification_service import cleanup_old_notifications
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# Assign logger = logging.getLogger(__name__)
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logger = logging.getLogger(__name__)
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# Assign AUDIT_LOG_RETENTION_DAYS = 730
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AUDIT_LOG_RETENTION_DAYS = 730
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# Define function apply_retention_policies
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def apply_retention_policies(db: Session) -> dict[str, int]:
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"""Apply retention rules. Commits the session before returning."""
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# Assign cutoff = datetime.now(timezone.utc) - timedelta(days=AUDIT_LOG_RETENTION_DAYS)
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cutoff = datetime.now(timezone.utc) - timedelta(days=AUDIT_LOG_RETENTION_DAYS)
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# Assign deleted_audit = (
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deleted_audit = (
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db.query(AuditLog)
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# Chain .filter() call
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.filter(AuditLog.timestamp < cutoff)
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# Chain .delete() call
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.delete(synchronize_session=False)
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)
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# Check: deleted_audit
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if deleted_audit:
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# Log info:
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logger.info(
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# Literal argument value
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"Retention: deleted %d audit logs older than %d days",
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deleted_audit,
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AUDIT_LOG_RETENTION_DAYS,
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)
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# Assign deleted_notifications = cleanup_old_notifications(db, days=90)
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deleted_notifications = cleanup_old_notifications(db, days=90)
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# Commit all pending changes to the database
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db.commit()
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# Return {
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return {
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# Literal argument value
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"audit_logs_deleted": deleted_audit,
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# Literal argument value
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"notifications_deleted": deleted_notifications,
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}
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# Define function run_retention_job
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def run_retention_job() -> None:
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"""Entry point for the daily retention scheduler job."""
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# Log info: "Scheduled retention job starting..."
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logger.info("Scheduled retention job starting...")
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# Assign db = SessionLocal()
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db = SessionLocal()
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# Attempt the following; catch errors below
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try:
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# Assign summary = apply_retention_policies(db)
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summary = apply_retention_policies(db)
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# Log info: "Retention job finished — %s", summary
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logger.info("Retention job finished — %s", summary)
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# Handle Exception
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except Exception:
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# Log exception: "Retention job failed"
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logger.exception("Retention job failed")
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# Roll back all uncommitted changes
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db.rollback()
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# Always execute this cleanup block
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finally:
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# Close the database session
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db.close()
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