zabbix-deploy/collector/l2_due.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Return exit 0 when the full collection interval is due.

The shell scheduler wakes every five minutes.  This gate reads the same
`full_interval_min` setting as the web config, so changing that single field
changes both the full collection and the history-snapshot cadence.  A stamp
file is updated only after a complete run, so a failed run is retried on the
next scheduler tick.
"""
import os
import sys
import time

HERE = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, HERE)

import l2cfg  # noqa: E402


def main():
    try:
        cfg = l2cfg.config()
        interval = max(5, int(cfg.get('full_interval_min') or 5))
    except Exception as exc:
        # Never let a temporary config/DB read failure block collection.
        print('due check config fallback: %s' % exc)
        interval = 5
    stamp = os.environ.get('L2_FULL_STAMP') or '/tmp/l2_full_last'
    try:
        last = os.path.getmtime(stamp)
    except OSError:
        last = 0
    if time.time() - last >= interval * 60:
        return 0
    return 1


if __name__ == '__main__':
    sys.exit(main())