71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
"""
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The rest binary sensor will consume responses sent by an exposed REST API.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/binary_sensor.rest/
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"""
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import logging
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from homeassistant.components.binary_sensor import BinarySensorDevice
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from homeassistant.components.sensor.rest import RestData
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from homeassistant.const import CONF_VALUE_TEMPLATE
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from homeassistant.helpers import template
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_LOGGER = logging.getLogger(__name__)
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DEFAULT_NAME = 'REST Binary Sensor'
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DEFAULT_METHOD = 'GET'
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# pylint: disable=unused-variable
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Setup REST binary sensors."""
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resource = config.get('resource', None)
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method = config.get('method', DEFAULT_METHOD)
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payload = config.get('payload', None)
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verify_ssl = config.get('verify_ssl', True)
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rest = RestData(method, resource, payload, verify_ssl)
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rest.update()
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if rest.data is None:
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_LOGGER.error('Unable to fetch Rest data')
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return False
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add_devices([RestBinarySensor(
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hass, rest, config.get('name', DEFAULT_NAME),
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config.get(CONF_VALUE_TEMPLATE))])
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# pylint: disable=too-many-arguments
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class RestBinarySensor(BinarySensorDevice):
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"""A REST binary sensor."""
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def __init__(self, hass, rest, name, value_template):
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"""Initialize a REST binary sensor."""
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self._hass = hass
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self.rest = rest
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self._name = name
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self._state = False
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self._value_template = value_template
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self.update()
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@property
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def name(self):
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"""Name of the binary sensor."""
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return self._name
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@property
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def is_on(self):
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"""Return true if the binary sensor is on."""
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if self.rest.data is None:
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return False
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if self._value_template is not None:
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self.rest.data = template.render_with_possible_json_value(
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self._hass, self._value_template, self.rest.data, False)
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return bool(int(self.rest.data))
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def update(self):
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"""Get the latest data from REST API and updates the state."""
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self.rest.update()
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