core/homeassistant/components/binary_sensor/nx584.py

149 lines
4.4 KiB
Python

"""
Support for exposing NX584 elements as sensors.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/binary_sensor.nx584/
"""
import logging
import threading
import time
import requests
import voluptuous as vol
from homeassistant.components.binary_sensor import (
DEVICE_CLASSES, BinarySensorDevice, PLATFORM_SCHEMA)
from homeassistant.const import (CONF_HOST, CONF_PORT)
import homeassistant.helpers.config_validation as cv
REQUIREMENTS = ['pynx584==0.4']
_LOGGER = logging.getLogger(__name__)
CONF_EXCLUDE_ZONES = 'exclude_zones'
CONF_ZONE_TYPES = 'zone_types'
DEFAULT_HOST = 'localhost'
DEFAULT_PORT = '5007'
DEFAULT_SSL = False
ZONE_TYPES_SCHEMA = vol.Schema({
cv.positive_int: vol.In(DEVICE_CLASSES),
})
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Optional(CONF_EXCLUDE_ZONES, default=[]):
vol.All(cv.ensure_list, [cv.positive_int]),
vol.Optional(CONF_HOST, default=DEFAULT_HOST): cv.string,
vol.Optional(CONF_PORT, default=DEFAULT_PORT): cv.port,
vol.Optional(CONF_ZONE_TYPES, default={}): ZONE_TYPES_SCHEMA,
})
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Set up the NX584 binary sensor platform."""
from nx584 import client as nx584_client
host = config.get(CONF_HOST)
port = config.get(CONF_PORT)
exclude = config.get(CONF_EXCLUDE_ZONES)
zone_types = config.get(CONF_ZONE_TYPES)
try:
client = nx584_client.Client('http://{}:{}'.format(host, port))
zones = client.list_zones()
except requests.exceptions.ConnectionError as ex:
_LOGGER.error("Unable to connect to NX584: %s", str(ex))
return False
version = [int(v) for v in client.get_version().split('.')]
if version < [1, 1]:
_LOGGER.error("NX584 is too old to use for sensors (>=0.2 required)")
return False
zone_sensors = {
zone['number']: NX584ZoneSensor(
zone,
zone_types.get(zone['number'], 'opening'))
for zone in zones
if zone['number'] not in exclude}
if zone_sensors:
add_devices(zone_sensors.values())
watcher = NX584Watcher(client, zone_sensors)
watcher.start()
else:
_LOGGER.warning("No zones found on NX584")
return True
class NX584ZoneSensor(BinarySensorDevice):
"""Representation of a NX584 zone as a sensor."""
def __init__(self, zone, zone_type):
"""Initialize the nx594 binary sensor."""
self._zone = zone
self._zone_type = zone_type
@property
def device_class(self):
"""Return the class of this sensor, from DEVICE_CLASSES."""
return self._zone_type
@property
def should_poll(self):
"""No polling needed."""
return False
@property
def name(self):
"""Return the name of the binary sensor."""
return self._zone['name']
@property
def is_on(self):
"""Return true if the binary sensor is on."""
# True means "faulted" or "open" or "abnormal state"
return self._zone['state']
class NX584Watcher(threading.Thread):
"""Event listener thread to process NX584 events."""
def __init__(self, client, zone_sensors):
"""Initialize NX584 watcher thread."""
super(NX584Watcher, self).__init__()
self.daemon = True
self._client = client
self._zone_sensors = zone_sensors
def _process_zone_event(self, event):
zone = event['zone']
zone_sensor = self._zone_sensors.get(zone)
# pylint: disable=protected-access
if not zone_sensor:
return
zone_sensor._zone['state'] = event['zone_state']
zone_sensor.schedule_update_ha_state()
def _process_events(self, events):
for event in events:
if event.get('type') == 'zone_status':
self._process_zone_event(event)
def _run(self):
"""Throw away any existing events so we don't replay history."""
self._client.get_events()
while True:
events = self._client.get_events()
if events:
self._process_events(events)
def run(self):
"""Run the watcher."""
while True:
try:
self._run()
except requests.exceptions.ConnectionError:
_LOGGER.error("Failed to reach NX584 server")
time.sleep(10)