unifi-low-snr-reconnect

#!/usr/bin/env python

from __future__ import print_function

import argparse
import time
from collections import defaultdict

from unifi.controller import Controller

parser = argparse.ArgumentParser()
parser.add_argument('-c', '--controller', default='unifi', help='the controller address (default "unifi")')
parser.add_argument('-u', '--username', default='admin', help='the controller username (default "admin")')
parser.add_argument('-p', '--password', default='', help='the controller password')
parser.add_argument('-b', '--port', default='8443', help='the controller port (default "8443")')
parser.add_argument('-v', '--version', default='v2', help='the controller base version (default "v2")')
parser.add_argument('-s', '--siteid', default='default', help='the site ID, UniFi >=3.x only (default "default")')
parser.add_argument('-m', '--minsnr', default=15, type=int, help='(dB) minimum required client SNR (default 15)')
parser.add_argument('-i', '--checkintv', default=5, type=int, help='(s) check interval (default 5)')
parser.add_argument('-o', '--holdintv', default=300, type=int, help='(s) holddown interval (default 300)')
parser.add_argument('-d', '--debug', help='enable debug output', action='store_true')
args = parser.parse_args()

c = Controller(args.controller, args.username, args.password, args.port, args.version, args.siteid)

all_aps = c.get_aps()
ap_names = dict([(ap['mac'], ap.get('name')) for ap in all_aps])

kicks = defaultdict(int)
held = defaultdict(bool)
while True:
    res = c.get_clients()
    now = time.time()

    if args.debug:
        print('Got %d clients to check' % len(res))
    for sta in res:
        name = sta.get('hostname','')
        snr = sta['rssi']
        mac = sta['mac']
        ap_mac = sta['ap_mac']
        ap_name = ap_names[ap_mac]
	essid = sta['essid']
        if args.debug:
            print('%s/%s@%s %d' % (name, mac, ap_name, snr))
        if snr < args.minsnr:
            if now - kicks[name] > args.holdintv:
                print('Disconnecting %s/%s@%s (SNR %d dB < %d dB) on %s' % (name, mac, ap_name, snr, args.minsnr,essid))
                c.disconnect_client(mac)
                kicks[name] = now
                held[name] = False
            elif not held[name]:
                held[name] = True
                if args.debug:
                    print('Ignoring %s/%s@%s (SNR %d dB < %d dB) (holddown)' % (name, mac, ap_name, snr, args.minsnr))

    time.sleep(args.checkintv)