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Fix time pattern listener firing a few microseconds early (#39281)

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This commit is contained in:
J. Nick Koston 2020-08-26 10:50:25 -05:00 committed by Paulus Schoutsen
parent 5c9a8a27c8
commit 9678cbdde2
1 changed files with 8 additions and 2 deletions
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10
homeassistant/helpers/event.py
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@ -620,13 +620,19 @@ def async_track_utc_time_change(
calculate_next(now + timedelta(seconds=1))
# We always get time.time() first to avoid time.time()
# ticking forward after fetching hass.loop.time()
# and callback being scheduled a few microseconds early
cancel_callback = hass.loop.call_at(
hass.loop.time() + next_time.timestamp() - time.time(),
-time.time() + hass.loop.time() + next_time.timestamp(),
pattern_time_change_listener,
)
# We always get time.time() first to avoid time.time()
# ticking forward after fetching hass.loop.time()
# and callback being scheduled a few microseconds early
cancel_callback = hass.loop.call_at(
hass.loop.time() + next_time.timestamp() - time.time(),
-time.time() + hass.loop.time() + next_time.timestamp(),
pattern_time_change_listener,
)