74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
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"""Cron scheduler — reads CronJob rows and enqueues ARQ jobs."""
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from __future__ import annotations
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import logging
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from datetime import UTC, datetime
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from typing import Any
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import croniter
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from sqlalchemy import select
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from app.core.db import get_session_factory
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logger = logging.getLogger(__name__)
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def calculate_next_run(cron_expression: str, from_time: datetime | None = None) -> datetime:
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"""Calculate the next run time from a cron expression using croniter."""
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base = from_time or datetime.now(UTC)
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cron = croniter.croniter(cron_expression, base)
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next_dt = cron.get_next(datetime)
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return next_dt
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async def scheduler_tick(ctx: dict[str, Any]) -> None:
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"""Run every 60s via ARQ cron. Reads active CronJob rows where next_run_at <= now,
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enqueues appropriate ARQ job, updates last_run_at and calculates next_run_at."""
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from app.plugins.builtins.automation.models import AutomationCronJob as CronJob
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now = datetime.now(UTC)
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factory = get_session_factory()
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async with factory() as db:
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result = await db.execute(
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select(CronJob).where(
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CronJob.is_active.is_(True),
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CronJob.next_run_at <= now,
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)
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)
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jobs = list(result.scalars().all())
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if not jobs:
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logger.debug("scheduler_tick: no cron jobs due")
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return
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logger.info("scheduler_tick: %d cron job(s) due", len(jobs))
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for job in jobs:
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try:
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if job.job_type == "agent":
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from app.core.jobs import enqueue_job
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await enqueue_job("run_agent", job.target_id, trigger_type="scheduled")
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elif job.job_type == "automation":
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from app.core.jobs import enqueue_job
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await enqueue_job("run_automation", job.target_id, trigger_type="scheduled")
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else:
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logger.warning("Unknown cron job_type: %s", job.job_type)
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continue
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# Update last_run_at and calculate next_run_at
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async with factory() as db:
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result = await db.execute(select(CronJob).where(CronJob.id == job.id))
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db_job = result.scalar_one_or_none()
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if db_job is None:
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continue
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db_job.last_run_at = now
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db_job.next_run_at = calculate_next_run(db_job.cron_expression, now)
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await db.flush()
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logger.info("Enqueued %s %s (id=%s)", job.job_type, job.target_id, job.id)
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except Exception:
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logger.exception("Failed to process cron job %s", job.id)
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