35 lines
893 B
Python
35 lines
893 B
Python
"""
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Offer MQTT listening automation rules.
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For more details about this automation rule, please refer to the documentation
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at https://home-assistant.io/components/automation/#mqtt-trigger
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"""
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import logging
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import homeassistant.components.mqtt as mqtt
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DEPENDENCIES = ['mqtt']
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CONF_TOPIC = 'topic'
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CONF_PAYLOAD = 'payload'
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def trigger(hass, config, action):
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"""Listen for state changes based on configuration."""
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topic = config.get(CONF_TOPIC)
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payload = config.get(CONF_PAYLOAD)
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if topic is None:
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logging.getLogger(__name__).error(
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"Missing configuration key %s", CONF_TOPIC)
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return False
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def mqtt_automation_listener(msg_topic, msg_payload, qos):
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"""Listen for MQTT messages."""
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if payload is None or payload == msg_payload:
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action()
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mqtt.subscribe(hass, topic, mqtt_automation_listener)
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return True
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