core/homeassistant/components/supervisord/sensor.py

80 lines
2.2 KiB
Python

"""Sensor for Supervisord process status."""
import logging
import xmlrpc.client
import voluptuous as vol
from homeassistant.components.sensor import PLATFORM_SCHEMA
from homeassistant.const import CONF_URL
from homeassistant.helpers.entity import Entity
import homeassistant.helpers.config_validation as cv
_LOGGER = logging.getLogger(__name__)
ATTR_DESCRIPTION = 'description'
ATTR_GROUP = 'group'
DEFAULT_URL = 'http://localhost:9001/RPC2'
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Optional(CONF_URL, default=DEFAULT_URL): cv.url,
})
def setup_platform(hass, config, add_entities, discovery_info=None):
"""Set up the Supervisord platform."""
url = config.get(CONF_URL)
try:
supervisor_server = xmlrpc.client.ServerProxy(url)
processes = supervisor_server.supervisor.getAllProcessInfo()
except ConnectionRefusedError:
_LOGGER.error("Could not connect to Supervisord")
return False
add_entities(
[SupervisorProcessSensor(info, supervisor_server)
for info in processes], True)
class SupervisorProcessSensor(Entity):
"""Representation of a supervisor-monitored process."""
def __init__(self, info, server):
"""Initialize the sensor."""
self._info = info
self._server = server
self._available = True
@property
def name(self):
"""Return the name of the sensor."""
return self._info.get('name')
@property
def state(self):
"""Return the state of the sensor."""
return self._info.get('statename')
@property
def available(self):
"""Could the device be accessed during the last update call."""
return self._available
@property
def device_state_attributes(self):
"""Return the state attributes."""
return {
ATTR_DESCRIPTION: self._info.get('description'),
ATTR_GROUP: self._info.get('group'),
}
def update(self):
"""Update device state."""
try:
self._info = self._server.supervisor.getProcessInfo(
self._info.get('name'))
self._available = True
except ConnectionRefusedError:
_LOGGER.warning("Supervisord not available")
self._available = False