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Mqtt camera (#7092)
* first commit * minor fixes * minor fix * async_camera_image + test * minor fix * async calls
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74
homeassistant/components/camera/mqtt.py
Executable file
74
homeassistant/components/camera/mqtt.py
Executable file
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"""
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Camera that loads a picture from an MQTT topic.
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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/camera.mqtt/
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"""
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import asyncio
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import logging
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import voluptuous as vol
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from homeassistant.core import callback
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import homeassistant.components.mqtt as mqtt
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from homeassistant.const import CONF_NAME
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from homeassistant.components.camera import Camera, PLATFORM_SCHEMA
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from homeassistant.helpers import config_validation as cv
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_LOGGER = logging.getLogger(__name__)
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CONF_TOPIC = 'topic'
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DEFAULT_NAME = 'MQTT Camera'
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DEPENDENCIES = ['mqtt']
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_TOPIC): mqtt.valid_subscribe_topic,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string
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})
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@asyncio.coroutine
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def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
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"""Setup the Camera."""
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topic = config[CONF_TOPIC]
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async_add_devices([MqttCamera(config[CONF_NAME], topic)])
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class MqttCamera(Camera):
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"""MQTT camera."""
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def __init__(self, name, topic):
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"""Initialize Local File Camera component."""
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super().__init__()
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self._name = name
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self._topic = topic
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self._qos = 0
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self._last_image = None
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@asyncio.coroutine
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def async_camera_image(self):
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"""Return image response."""
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return self._last_image
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@property
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def name(self):
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"""Return the name of this camera."""
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return self._name
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def async_added_to_hass(self):
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"""Subscribe mqtt events.
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This method must be run in the event loop and returns a coroutine.
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"""
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@callback
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def message_received(topic, payload, qos):
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"""A new MQTT message has been received."""
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self._last_image = payload
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return mqtt.async_subscribe(
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self.hass, self._topic, message_received, self._qos, None)
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28
tests/components/camera/test_mqtt.py
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tests/components/camera/test_mqtt.py
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"""The tests for mqtt camera component."""
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import asyncio
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from homeassistant.setup import async_setup_component
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import homeassistant.components.mqtt as mqtt
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@asyncio.coroutine
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def test_run_camera_setup(hass, test_client):
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"""Test that it fetches the given dispatcher data."""
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topic = 'test/camera'
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yield from async_setup_component(hass, 'camera', {
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'camera': {
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'platform': 'mqtt',
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'topic': topic,
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'name': 'Test Camera',
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}})
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client = yield from test_client(hass.http.app)
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mqtt.publish(hass, topic, 0xFFD8FF)
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yield from hass.async_block_till_done()
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resp = yield from client.get('/api/camera_proxy/camera.test_camera')
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assert resp.status == 200
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body = yield from resp.text()
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assert body == '16767231'
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