110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
"""
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A component which allows you to send data to an Influx database.
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For more details about this component, please refer to the documentation at
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https://home-assistant.io/components/influxdb/
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"""
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import logging
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import homeassistant.util as util
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from homeassistant.const import (EVENT_STATE_CHANGED, STATE_UNAVAILABLE,
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STATE_UNKNOWN)
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from homeassistant.helpers import state as state_helper
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from homeassistant.helpers import validate_config
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_LOGGER = logging.getLogger(__name__)
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DOMAIN = "influxdb"
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DEPENDENCIES = []
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DEFAULT_HOST = 'localhost'
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DEFAULT_PORT = 8086
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DEFAULT_DATABASE = 'home_assistant'
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DEFAULT_SSL = False
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DEFAULT_VERIFY_SSL = False
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REQUIREMENTS = ['influxdb==2.12.0']
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CONF_HOST = 'host'
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CONF_PORT = 'port'
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CONF_DB_NAME = 'database'
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CONF_USERNAME = 'username'
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CONF_PASSWORD = 'password'
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CONF_SSL = 'ssl'
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CONF_VERIFY_SSL = 'verify_ssl'
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CONF_BLACKLIST = 'blacklist'
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# pylint: disable=too-many-locals
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def setup(hass, config):
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"""Setup the InfluxDB component."""
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from influxdb import InfluxDBClient, exceptions
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if not validate_config(config, {DOMAIN: ['host',
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CONF_USERNAME,
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CONF_PASSWORD]}, _LOGGER):
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return False
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conf = config[DOMAIN]
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host = conf[CONF_HOST]
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port = util.convert(conf.get(CONF_PORT), int, DEFAULT_PORT)
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database = util.convert(conf.get(CONF_DB_NAME), str, DEFAULT_DATABASE)
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username = util.convert(conf.get(CONF_USERNAME), str)
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password = util.convert(conf.get(CONF_PASSWORD), str)
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ssl = util.convert(conf.get(CONF_SSL), bool, DEFAULT_SSL)
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verify_ssl = util.convert(conf.get(CONF_VERIFY_SSL), bool,
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DEFAULT_VERIFY_SSL)
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blacklist = conf.get(CONF_BLACKLIST, [])
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try:
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influx = InfluxDBClient(host=host, port=port, username=username,
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password=password, database=database,
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ssl=ssl, verify_ssl=verify_ssl)
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influx.query("select * from /.*/ LIMIT 1;")
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except exceptions.InfluxDBClientError as exc:
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_LOGGER.error("Database host is not accessible due to '%s', please "
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"check your entries in the configuration file and that "
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"the database exists and is READ/WRITE.", exc)
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return False
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def influx_event_listener(event):
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"""Listen for new messages on the bus and sends them to Influx."""
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state = event.data.get('new_state')
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if state is None or state.state in (
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STATE_UNKNOWN, '', STATE_UNAVAILABLE) or \
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state.entity_id in blacklist:
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return
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try:
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_state = state_helper.state_as_number(state)
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except ValueError:
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_state = state.state
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measurement = state.attributes.get('unit_of_measurement')
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if measurement in (None, ''):
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measurement = state.entity_id
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json_body = [
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{
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'measurement': measurement,
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'tags': {
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'domain': state.domain,
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'entity_id': state.object_id,
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},
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'time': event.time_fired,
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'fields': {
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'value': _state,
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}
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}
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]
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try:
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influx.write_points(json_body)
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except exceptions.InfluxDBClientError:
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_LOGGER.exception('Error saving event "%s" to InfluxDB', json_body)
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hass.bus.listen(EVENT_STATE_CHANGED, influx_event_listener)
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return True
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