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Speed up get_unread_event_push_actions_by_room (#13005)

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Fixes #11887 hopefully.

The core change here is that `event_push_summary` now holds a summary of counts up until a much more recent point, meaning that the range of rows we need to count in `event_push_actions` is much smaller.

This needs two major changes:
1. When we get a receipt we need to recalculate `event_push_summary` rather than just delete it
2. The logic for deleting `event_push_actions` is now divorced from calculating `event_push_summary`.

In future it would be good to calculate `event_push_summary` while we persist a new event (it should just be a case of adding one to the relevant rows in `event_push_summary`), as that will further simplify the get counts logic and remove the need for us to periodically update `event_push_summary` in a background job.
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Erik Johnston 2022-06-15 16:17:14 +01:00 • committed by GitHub
parent 9ad2197fa7
commit 0d1d3e0708
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14 changed files with 322 additions and 151 deletions
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16
tests/push/test_http.py
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@ -577,7 +577,7 @@ class HTTPPusherTests(HomeserverTestCase):
# Carry out our option-value specific test
#
# This push should still only contain an unread count of 1 (for 1 unread room)
self._check_push_attempt(6, 1)
self._check_push_attempt(7, 1)
@override_config({"push": {"group_unread_count_by_room": False}})
def test_push_unread_count_message_count(self) -> None:
@ -591,7 +591,7 @@ class HTTPPusherTests(HomeserverTestCase):
#
# We're counting every unread message, so there should now be 3 since the
# last read receipt
self._check_push_attempt(6, 3)
self._check_push_attempt(7, 3)
def _test_push_unread_count(self) -> None:
"""
@ -641,18 +641,18 @@ class HTTPPusherTests(HomeserverTestCase):
response = self.helper.send(
room_id, body="Hello there!", tok=other_access_token
)
# To get an unread count, the user who is getting notified has to have a read
# position in the room. We'll set the read position to this event in a moment
first_message_event_id = response["event_id"]
expected_push_attempts = 1
self._check_push_attempt(expected_push_attempts, 0)
self._check_push_attempt(expected_push_attempts, 1)
self._send_read_request(access_token, first_message_event_id, room_id)
# Unread count has not changed. Therefore, ensure that read request does not
# trigger a push notification.
self.assertEqual(len(self.push_attempts), 1)
# Unread count has changed. Therefore, ensure that read request triggers
# a push notification.
expected_push_attempts += 1
self.assertEqual(len(self.push_attempts), expected_push_attempts)
# Send another message
response2 = self.helper.send(