#!/usr/bin/env python3


from json import loads
from subprocess import check_output


queue_counts = {}

queue_json = check_output(['sudo', '/usr/sbin/postqueue', '-j'])
for line in queue_json.splitlines():
    j = loads(line.decode('UTF-8'))
    queue_counts.setdefault(j['queue_name'], 0)
    queue_counts[j['queue_name']] += 1

for queue in ('incoming', 'active', 'deferred', 'corrupt', 'hold'):
    print('postfix_queue {}={}i'.format(queue, queue_counts.get(queue, 0)))
