core/homeassistant/components/device_tracker/mqtt.py

49 lines
1.2 KiB
Python

"""
homeassistant.components.device_tracker.mqtt
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MQTT platform for the device tracker.
device_tracker:
platform: mqtt
qos: 1
devices:
paulus_oneplus: /location/paulus
annetherese_n4: /location/annetherese
"""
import logging
from homeassistant import util
import homeassistant.components.mqtt as mqtt
DEPENDENCIES = ['mqtt']
CONF_QOS = 'qos'
CONF_DEVICES = 'devices'
DEFAULT_QOS = 0
_LOGGER = logging.getLogger(__name__)
def setup_scanner(hass, config, see):
""" Set up a MQTT tracker. """
devices = config.get(CONF_DEVICES)
qos = util.convert(config.get(CONF_QOS), int, DEFAULT_QOS)
if not isinstance(devices, dict):
_LOGGER.error('Expected %s to be a dict, found %s', CONF_DEVICES,
devices)
return False
dev_id_lookup = {}
def device_tracker_message_received(topic, payload, qos):
""" MQTT message received. """
see(dev_id=dev_id_lookup[topic], location_name=payload)
for dev_id, topic in devices.items():
dev_id_lookup[topic] = dev_id
mqtt.subscribe(hass, topic, device_tracker_message_received, qos)
return True