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Cache LaMetric devices for offline use (#13379)

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If the connection to the LaMetric server fails, we should still be able
to send notifications to known and reachable devices.
This commit is contained in:
Philip Rosenberg-Watt 2018-03-23 11:10:52 -06:00 • committed by Fabian Affolter
parent 5ec6f25d4e
commit 23f06b0040
1 changed files with 8 additions and 3 deletions
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11
homeassistant/components/notify/lametric.py
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@ -6,6 +6,7 @@ https://home-assistant.io/components/notify.lametric/
""" """
import logging import logging
from requests.exceptions import ConnectionError as RequestsConnectionError
import voluptuous as vol import voluptuous as vol
from homeassistant.components.notify import ( from homeassistant.components.notify import (
@ -49,6 +50,7 @@ class LaMetricNotificationService(BaseNotificationService):
self._icon = icon self._icon = icon
self._lifetime = lifetime self._lifetime = lifetime
self._cycles = cycles self._cycles = cycles
self._devices = []
# pylint: disable=broad-except # pylint: disable=broad-except
def send_message(self, message="", **kwargs): def send_message(self, message="", **kwargs):
@ -86,12 +88,15 @@ class LaMetricNotificationService(BaseNotificationService):
model = Model(frames=frames, cycles=cycles, sound=sound) model = Model(frames=frames, cycles=cycles, sound=sound)
lmn = self.hasslametricmanager.manager lmn = self.hasslametricmanager.manager
try: try:
devices = lmn.get_devices() self._devices = lmn.get_devices()
except TokenExpiredError: except TokenExpiredError:
_LOGGER.debug("Token expired, fetching new token") _LOGGER.debug("Token expired, fetching new token")
lmn.get_token() lmn.get_token()
devices = lmn.get_devices() self._devices = lmn.get_devices()
for dev in devices: except RequestsConnectionError:
_LOGGER.warning("Problem connecting to LaMetric, "
"using cached devices instead")
for dev in self._devices:
if targets is None or dev["name"] in targets: if targets is None or dev["name"] in targets:
try: try:
lmn.set_device(dev) lmn.set_device(dev)