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Speed up setting state (#93472)

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J. Nick Koston 2023-05-25 07:34:07 -05:00 committed by GitHub
parent 3cca338c6e
commit e09e4f14d6
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1 changed files with 18 additions and 3 deletions
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21
homeassistant/core.py
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@ -25,6 +25,7 @@ import os
import pathlib
import re
import threading
import time
from time import monotonic
from typing import (
TYPE_CHECKING,
@ -1620,10 +1621,24 @@ class StateMachine:
if same_state and same_attr:
return
now = dt_util.utcnow()
if context is None:
context = Context(id=ulid_util.ulid_at_time(dt_util.utc_to_timestamp(now)))
# It is much faster to convert a timestamp to a utc datetime object
# than converting a utc datetime object to a timestamp since cpython
# does not have a fast path for handling the UTC timezone and has to do
# multiple local timezone conversions.
#
# from_timestamp implementation:
# https://github.com/python/cpython/blob/c90a862cdcf55dc1753c6466e5fa4a467a13ae24/Modules/_datetimemodule.c#L2936
#
# timestamp implementation:
# https://github.com/python/cpython/blob/c90a862cdcf55dc1753c6466e5fa4a467a13ae24/Modules/_datetimemodule.c#L6387
# https://github.com/python/cpython/blob/c90a862cdcf55dc1753c6466e5fa4a467a13ae24/Modules/_datetimemodule.c#L6323
timestamp = time.time()
now = dt_util.utc_from_timestamp(timestamp)
context = Context(id=ulid_util.ulid_at_time(timestamp))
else:
now = dt_util.utcnow()
state = State(
entity_id,
new_state,