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Only poll for device updates if necessary

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This commit is contained in:
Paulus Schoutsen 2015-03-01 11:02:11 -08:00
parent 0fd89a4b1f
commit 00047009e2
1 changed files with 15 additions and 3 deletions
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18
homeassistant/helpers/device_component.py
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@ -25,6 +25,7 @@ class DeviceComponent(object):
self.devices = {} self.devices = {}
self.group = None self.group = None
self.is_polling = False
def setup(self, config): def setup(self, config):
""" """
@ -47,9 +48,6 @@ class DeviceComponent(object):
self._setup_platform(p_type, p_config) self._setup_platform(p_type, p_config)
self.hass.track_time_change(self._update_device_states,
second=range(0, 60, self.scan_interval))
if self.discovery_platforms: if self.discovery_platforms:
discovery.listen(self.hass, self.discovery_platforms.keys(), discovery.listen(self.hass, self.discovery_platforms.keys(),
self._device_discovered) self._device_discovered)
@ -88,6 +86,20 @@ class DeviceComponent(object):
if self.group is not None: if self.group is not None:
self.group.update_tracked_entity_ids(self.devices.keys()) self.group.update_tracked_entity_ids(self.devices.keys())
self._start_polling()
def _start_polling(self):
""" Start polling device states if necessary. """
if self.is_polling or \
not any(device.should_poll for device in self.devices.values()):
return
self.is_polling = True
self.hass.track_time_change(
self._update_device_states,
second=range(0, 60, self.scan_interval))
def _setup_platform(self, platform_type, config, discovery_info=None): def _setup_platform(self, platform_type, config, discovery_info=None):
""" Tries to setup a platform for this component. """ """ Tries to setup a platform for this component. """
platform_name = '{}.{}'.format(self.domain, platform_type) platform_name = '{}.{}'.format(self.domain, platform_type)