Embed all platforms into components (#20677)

* Consolidate all components with platforms

* Organize tests

* Fix more tests

* Fix Verisure tests

* one final test fix

* Add change

* Fix coverage

homeassistant/components/wemo/binary_sensor.py

@@ -0,0 +1,133 @@
+"""
+Support for WeMo sensors.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.wemo/
+"""
+import asyncio
+import logging
+
+import async_timeout
+import requests
+
+from homeassistant.components.binary_sensor import BinarySensorDevice
+from homeassistant.exceptions import PlatformNotReady
+
+DEPENDENCIES = ['wemo']
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def setup_platform(hass, config, add_entities, discovery_info=None):
+    """Register discovered WeMo binary sensors."""
+    from pywemo import discovery
+
+    if discovery_info is not None:
+        location = discovery_info['ssdp_description']
+        mac = discovery_info['mac_address']
+
+        try:
+            device = discovery.device_from_description(location, mac)
+        except (requests.exceptions.ConnectionError,
+                requests.exceptions.Timeout) as err:
+            _LOGGER.error('Unable to access %s (%s)', location, err)
+            raise PlatformNotReady
+
+        if device:
+            add_entities([WemoBinarySensor(hass, device)])
+
+
+class WemoBinarySensor(BinarySensorDevice):
+    """Representation a WeMo binary sensor."""
+
+    def __init__(self, hass, device):
+        """Initialize the WeMo sensor."""
+        self.wemo = device
+        self._state = None
+        self._available = True
+        self._update_lock = None
+        self._model_name = self.wemo.model_name
+        self._name = self.wemo.name
+        self._serialnumber = self.wemo.serialnumber
+
+    def _subscription_callback(self, _device, _type, _params):
+        """Update the state by the Wemo sensor."""
+        _LOGGER.debug("Subscription update for %s", self.name)
+        updated = self.wemo.subscription_update(_type, _params)
+        self.hass.add_job(
+            self._async_locked_subscription_callback(not updated))
+
+    async def _async_locked_subscription_callback(self, force_update):
+        """Handle an update from a subscription."""
+        # If an update is in progress, we don't do anything
+        if self._update_lock.locked():
+            return
+
+        await self._async_locked_update(force_update)
+        self.async_schedule_update_ha_state()
+
+    async def async_added_to_hass(self):
+        """Wemo sensor added to HASS."""
+        # Define inside async context so we know our event loop
+        self._update_lock = asyncio.Lock()
+
+        registry = self.hass.components.wemo.SUBSCRIPTION_REGISTRY
+        await self.hass.async_add_executor_job(registry.register, self.wemo)
+        registry.on(self.wemo, None, self._subscription_callback)
+
+    async def async_update(self):
+        """Update WeMo state.
+
+        Wemo has an aggressive retry logic that sometimes can take over a
+        minute to return. If we don't get a state after 5 seconds, assume the
+        Wemo sensor is unreachable. If update goes through, it will be made
+        available again.
+        """
+        # If an update is in progress, we don't do anything
+        if self._update_lock.locked():
+            return
+
+        try:
+            with async_timeout.timeout(5):
+                await asyncio.shield(self._async_locked_update(True))
+        except asyncio.TimeoutError:
+            _LOGGER.warning('Lost connection to %s', self.name)
+            self._available = False
+
+    async def _async_locked_update(self, force_update):
+        """Try updating within an async lock."""
+        async with self._update_lock:
+            await self.hass.async_add_executor_job(self._update, force_update)
+
+    def _update(self, force_update=True):
+        """Update the sensor state."""
+        try:
+            self._state = self.wemo.get_state(force_update)
+
+            if not self._available:
+                _LOGGER.info('Reconnected to %s', self.name)
+                self._available = True
+        except AttributeError as err:
+            _LOGGER.warning("Could not update status for %s (%s)",
+                            self.name, err)
+            self._available = False
+
+    @property
+    def unique_id(self):
+        """Return the id of this WeMo sensor."""
+        return self._serialnumber
+
+    @property
+    def name(self):
+        """Return the name of the service if any."""
+        return self._name
+
+    @property
+    def is_on(self):
+        """Return true if sensor is on."""
+        return self._state
+
+    @property
+    def available(self):
+        """Return true if sensor is available."""
+        return self._available