61 lines
1.7 KiB
Python
61 lines
1.7 KiB
Python
"""Offer MQTT listening automation rules."""
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import json
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import voluptuous as vol
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from homeassistant.components import mqtt
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from homeassistant.const import CONF_PAYLOAD, CONF_PLATFORM
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from homeassistant.core import callback
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import homeassistant.helpers.config_validation as cv
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# mypy: allow-untyped-defs
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CONF_ENCODING = "encoding"
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CONF_QOS = "qos"
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CONF_TOPIC = "topic"
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DEFAULT_ENCODING = "utf-8"
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DEFAULT_QOS = 0
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TRIGGER_SCHEMA = vol.Schema(
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{
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vol.Required(CONF_PLATFORM): mqtt.DOMAIN,
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vol.Required(CONF_TOPIC): mqtt.util.valid_subscribe_topic,
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vol.Optional(CONF_PAYLOAD): cv.string,
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vol.Optional(CONF_ENCODING, default=DEFAULT_ENCODING): cv.string,
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vol.Optional(CONF_QOS, default=DEFAULT_QOS): vol.All(
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vol.Coerce(int), vol.In([0, 1, 2])
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),
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}
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)
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async def async_attach_trigger(hass, config, action, automation_info):
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"""Listen for state changes based on configuration."""
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topic = config[CONF_TOPIC]
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payload = config.get(CONF_PAYLOAD)
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encoding = config[CONF_ENCODING] or None
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qos = config[CONF_QOS]
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@callback
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def mqtt_automation_listener(mqttmsg):
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"""Listen for MQTT messages."""
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if payload is None or payload == mqttmsg.payload:
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data = {
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"platform": "mqtt",
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"topic": mqttmsg.topic,
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"payload": mqttmsg.payload,
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"qos": mqttmsg.qos,
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}
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try:
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data["payload_json"] = json.loads(mqttmsg.payload)
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except ValueError:
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pass
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hass.async_run_job(action, {"trigger": data})
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remove = await mqtt.async_subscribe(
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hass, topic, mqtt_automation_listener, encoding=encoding, qos=qos
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)
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return remove
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