136 lines
4.6 KiB
Python
136 lines
4.6 KiB
Python
"""Geo cache cleanup background task.
|
|
|
|
Registers an APScheduler job that periodically removes stale entries from the
|
|
``geo_cache`` table — entries that have not been referenced in the configured
|
|
retention period (default: 90 days). This prevents unbounded growth of the
|
|
database file and maintains query performance on geo lookups.
|
|
|
|
When a stale IP is encountered again after purge, it will be re-resolved from
|
|
the MaxMind database or ip-api.com (if configured), which is acceptable.
|
|
|
|
Correlation IDs are propagated through the task using :mod:`app.utils.correlation`
|
|
so that task logs can be correlated across runs.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import uuid
|
|
from datetime import UTC, datetime, timedelta
|
|
from typing import TYPE_CHECKING
|
|
|
|
import structlog
|
|
|
|
from app.repositories import geo_cache_repo
|
|
from app.tasks.db import task_db
|
|
from app.tasks.timeout_utils import run_with_timeout
|
|
from app.utils.correlation import get_correlation_id, reset_correlation_id, set_correlation_id
|
|
from app.utils.runtime_state import get_effective_settings
|
|
|
|
if TYPE_CHECKING:
|
|
from fastapi import FastAPI
|
|
|
|
from app.config import Settings
|
|
|
|
log: structlog.stdlib.BoundLogger = structlog.get_logger()
|
|
|
|
#: How long to retain geo cache entries (days). Configurable tuning constant.
|
|
GEO_CACHE_RETENTION_DAYS: int = 90
|
|
|
|
#: How often the cleanup job fires (seconds). Default: once per day.
|
|
GEO_CLEANUP_INTERVAL: int = 24 * 60 * 60
|
|
|
|
#: Stable APScheduler job ID — ensures re-registration replaces, not duplicates.
|
|
JOB_ID: str = "geo_cache_cleanup"
|
|
|
|
#: Maximum seconds to allow for geo cache cleanup to complete.
|
|
TASK_TIMEOUT_SECONDS: int = 60
|
|
|
|
|
|
async def _run_cleanup_with_resources(
|
|
settings: Settings,
|
|
correlation_id: str | None = None,
|
|
) -> None:
|
|
"""Delete stale entries from the geo cache.
|
|
|
|
Calculates a cutoff timestamp (now - retention period) and removes all
|
|
entries with ``last_seen`` before that time. Logs the operation result.
|
|
|
|
Args:
|
|
settings: The resolved application settings used for database access.
|
|
correlation_id: Optional correlation ID for log correlation.
|
|
"""
|
|
if correlation_id is None:
|
|
correlation_id = str(uuid.uuid4())
|
|
|
|
token = set_correlation_id(correlation_id)
|
|
try:
|
|
await _do_cleanup_with_settings(settings)
|
|
finally:
|
|
reset_correlation_id(token)
|
|
|
|
|
|
async def _do_cleanup_with_settings(settings: Settings) -> None:
|
|
"""Inner cleanup logic that runs with correlation context set."""
|
|
|
|
async def _do_cleanup() -> None:
|
|
cutoff_dt = datetime.now(UTC) - timedelta(days=GEO_CACHE_RETENTION_DAYS)
|
|
cutoff_iso = cutoff_dt.strftime("%Y-%m-%dT%H:%M:%SZ")
|
|
|
|
async with task_db(settings) as db:
|
|
deleted = await geo_cache_repo.delete_stale_entries(db, cutoff_iso)
|
|
await db.commit()
|
|
|
|
if deleted > 0:
|
|
log.info(
|
|
"geo_cache_cleanup_ran",
|
|
correlation_id=get_correlation_id(),
|
|
deleted=deleted,
|
|
retention_days=GEO_CACHE_RETENTION_DAYS,
|
|
)
|
|
else:
|
|
log.debug(
|
|
"geo_cache_cleanup_ran",
|
|
correlation_id=get_correlation_id(),
|
|
deleted=deleted,
|
|
retention_days=GEO_CACHE_RETENTION_DAYS,
|
|
)
|
|
|
|
await run_with_timeout("geo_cache_cleanup", _do_cleanup(), TASK_TIMEOUT_SECONDS)
|
|
|
|
|
|
async def _run_cleanup(app: FastAPI) -> None:
|
|
"""Run cleanup with application settings."""
|
|
await _run_cleanup_with_resources(get_effective_settings(app))
|
|
|
|
|
|
def register(app: FastAPI) -> None:
|
|
"""Add (or replace) the geo cache cleanup job in the application scheduler.
|
|
|
|
Must be called after the scheduler has been started (i.e., inside the
|
|
lifespan handler, after ``scheduler.start()``).
|
|
|
|
Args:
|
|
app: The :class:`fastapi.FastAPI` application instance whose
|
|
``app.state.scheduler`` will receive the job.
|
|
"""
|
|
settings = get_effective_settings(app)
|
|
scheduler = getattr(app.state, "scheduler", None)
|
|
if scheduler is None:
|
|
# In tests or standalone usage, scheduler may not be on app.state yet.
|
|
# Use a no-op fallback — the heartbeat won't be registered but no crash.
|
|
log.warning("geo_cache_cleanup_no_scheduler")
|
|
return
|
|
scheduler.add_job(
|
|
_run_cleanup_with_resources,
|
|
trigger="interval",
|
|
seconds=GEO_CLEANUP_INTERVAL,
|
|
kwargs={"settings": settings},
|
|
id=JOB_ID,
|
|
replace_existing=True,
|
|
)
|
|
log.info(
|
|
"geo_cache_cleanup_scheduled",
|
|
interval_seconds=GEO_CLEANUP_INTERVAL,
|
|
retention_days=GEO_CACHE_RETENTION_DAYS,
|
|
)
|