#!/usr/bin/python3
#
# Univention Monitoring Plugin
#  check_univention_nscd: check if nscd is bound to its socket.
#
# SPDX-FileCopyrightText: 2017-2025 Univention GmbH
# SPDX-License-Identifier: AGPL-3.0-only

import os
import stat
import subprocess

from univention.monitoring import Alert


class NSCD(Alert):

    def write_metrics(self):
        rc, output = self.exec_command(['/usr/lib/nagios/plugins/check_procs', '-w', '1:1', '-c', '1:', '-C', 'nscd'])
        self.write_metric('univention_nscd_running', 1 if rc == 0 else 0)
        self.log.debug(output)

        message = None
        try:
            running = os.stat('/var/run/nscd/socket').st_mode & stat.S_IFSOCK == stat.S_IFSOCK
        except FileNotFoundError:
            running = False
        if not running:
            message = "no nscd socket found! nscd not running?"
        else:
            rc, output = self.exec_command(['/usr/bin/timeout', '3', 'nscd', '-g'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
            if rc:
                running = False
                message = "nscd not responding!"
        self.write_metric('univention_nscd_responding', 1 if running else 0)
        self.log.debug(message)


if __name__ == '__main__':
    NSCD.main()
