93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
"""Camera that loads a picture from an MQTT topic."""
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import functools
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import voluptuous as vol
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from homeassistant.components import camera
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from homeassistant.components.camera import Camera
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from homeassistant.const import CONF_NAME
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.helpers import config_validation as cv
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from homeassistant.helpers.reload import async_setup_reload_service
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from homeassistant.helpers.typing import ConfigType
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from . import CONF_QOS, DOMAIN, PLATFORMS, subscription
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from .. import mqtt
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from .debug_info import log_messages
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from .mixins import MQTT_ENTITY_COMMON_SCHEMA, MqttEntity, async_setup_entry_helper
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CONF_TOPIC = "topic"
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DEFAULT_NAME = "MQTT Camera"
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PLATFORM_SCHEMA = mqtt.MQTT_BASE_PLATFORM_SCHEMA.extend(
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{
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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vol.Required(CONF_TOPIC): mqtt.valid_subscribe_topic,
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}
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).extend(MQTT_ENTITY_COMMON_SCHEMA.schema)
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async def async_setup_platform(
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hass: HomeAssistant, config: ConfigType, async_add_entities, discovery_info=None
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):
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"""Set up MQTT camera through configuration.yaml."""
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await async_setup_reload_service(hass, DOMAIN, PLATFORMS)
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await _async_setup_entity(async_add_entities, config)
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async def async_setup_entry(hass, config_entry, async_add_entities):
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"""Set up MQTT camera dynamically through MQTT discovery."""
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setup = functools.partial(
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_async_setup_entity, async_add_entities, config_entry=config_entry
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)
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await async_setup_entry_helper(hass, camera.DOMAIN, setup, PLATFORM_SCHEMA)
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async def _async_setup_entity(
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async_add_entities, config, config_entry=None, discovery_data=None
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):
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"""Set up the MQTT Camera."""
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async_add_entities([MqttCamera(config, config_entry, discovery_data)])
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class MqttCamera(MqttEntity, Camera):
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"""representation of a MQTT camera."""
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def __init__(self, config, config_entry, discovery_data):
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"""Initialize the MQTT Camera."""
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self._last_image = None
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Camera.__init__(self)
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MqttEntity.__init__(self, None, config, config_entry, discovery_data)
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@staticmethod
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def config_schema():
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"""Return the config schema."""
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return PLATFORM_SCHEMA
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async def _subscribe_topics(self):
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"""(Re)Subscribe to topics."""
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@callback
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@log_messages(self.hass, self.entity_id)
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def message_received(msg):
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"""Handle new MQTT messages."""
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self._last_image = msg.payload
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self._sub_state = await subscription.async_subscribe_topics(
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self.hass,
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self._sub_state,
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{
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"state_topic": {
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"topic": self._config[CONF_TOPIC],
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"msg_callback": message_received,
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"qos": self._config[CONF_QOS],
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"encoding": None,
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}
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},
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)
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async def async_camera_image(self):
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"""Return image response."""
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return self._last_image
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