#!/usr/bin/env python3
"""Nrpe update-status hook"""

import os
import subprocess
from charmhelpers.core.hookenv import status_set
from services import get_revision

SERVICE = "nagios-nrpe-server"


def update_status():
    """Update Nrpe Juju status."""
    retcode = subprocess.call(["systemctl", "is-active", "--quiet", SERVICE])
    if retcode == 0:
        status_set("active", "Ready{}".format(get_revision()))
    else:
        status_set("blocked", "{} service inactive.".format(SERVICE))


if __name__ == '__main__':
    update_status()