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Improve performance of generate diffs of state change events (#124601)

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dict comps are inlined in cpython 3.12+
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J. Nick Koston 2024-08-25 20:49:31 -10:00 committed by GitHub
parent 0591b5e47b
commit 76ebb0df08
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1 changed files with 6 additions and 3 deletions
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9
homeassistant/components/websocket_api/messages.py
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@ -224,9 +224,12 @@ def _state_diff_event(
if (old_attributes := old_state.attributes) != ( if (old_attributes := old_state.attributes) != (
new_attributes := new_state.attributes new_attributes := new_state.attributes
): ):
for key, value in new_attributes.items(): if added := {
if old_attributes.get(key) != value: key: value
additions.setdefault(COMPRESSED_STATE_ATTRIBUTES, {})[key] = value for key, value in new_attributes.items()
if key not in old_attributes or old_attributes[key] != value
}:
additions[COMPRESSED_STATE_ATTRIBUTES] = added
if removed := old_attributes.keys() - new_attributes: if removed := old_attributes.keys() - new_attributes:
# sets are not JSON serializable by default so we convert to list # sets are not JSON serializable by default so we convert to list
# here if there are any values to avoid jumping into the json_encoder_default # here if there are any values to avoid jumping into the json_encoder_default