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Don't require to_delete to have event_ids
This commit is contained in:
Erik Johnston
parent
0a8e4f3af9
commit
223341205e
1 changed files with 55 additions and 36 deletions
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@ -19,7 +19,7 @@ import logging
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from collections import OrderedDict, deque, namedtuple
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from functools import wraps
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from six import iteritems, itervalues
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from six import iteritems
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from six.moves import range
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from canonicaljson import json
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@ -347,8 +347,9 @@ class EventsStore(EventsWorkerStore):
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# state in each room after adding these events
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current_state_for_room = {}
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# map room_id->(to_delete, to_insert) where each entry is
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# a map (type,key)->event_id giving the state delta in each
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# map room_id->(to_delete, to_insert) where to_delete is a list
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# of type/state keys to remove from current state, and to_insert
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# is a map (type,key)->event_id giving the state delta in each
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# room
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state_delta_for_room = {}
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@ -647,17 +648,16 @@ class EventsStore(EventsWorkerStore):
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Assumes that we are only persisting events for one room at a time.
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Returns:
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2-tuple (to_delete, to_insert) where both are state dicts,
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i.e. (type, state_key) -> event_id. `to_delete` are the entries to
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first be deleted from current_state_events, `to_insert` are entries
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to insert.
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tuple[list, dict] (to_delete, to_insert): where to_delete are the
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type/state_keys to remove from current_state_events and `to_insert`
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are the updates to current_state_events.
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"""
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existing_state = yield self.get_current_state_ids(room_id)
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to_delete = {
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key: ev_id for key, ev_id in iteritems(existing_state)
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if ev_id != current_state.get(key)
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}
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to_delete = [
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key for key, ev_id in iteritems(existing_state)
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if key not in current_state
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]
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to_insert = {
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key: ev_id for key, ev_id in iteritems(current_state)
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@ -684,10 +684,10 @@ class EventsStore(EventsWorkerStore):
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delete_existing (bool): True to purge existing table rows for the
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events from the database. This is useful when retrying due to
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IntegrityError.
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state_delta_for_room (dict[str, (list[str], list[str])]):
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state_delta_for_room (dict[str, (list, dict)]):
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The current-state delta for each room. For each room, a tuple
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(to_delete, to_insert), being a list of event ids to be removed
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from the current state, and a list of event ids to be added to
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(to_delete, to_insert), being a list of type/state keys to be
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removed from the current state, and a state set to be added to
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the current state.
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new_forward_extremeties (dict[str, list[str]]):
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The new forward extremities for each room. For each room, a
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@ -765,9 +765,46 @@ class EventsStore(EventsWorkerStore):
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def _update_current_state_txn(self, txn, state_delta_by_room, max_stream_order):
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for room_id, current_state_tuple in iteritems(state_delta_by_room):
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to_delete, to_insert = current_state_tuple
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# First we add entries to the current_state_delta_stream. We
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# do this before updating the current_state_events table so
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# that we can use it to calculate the `prev_event_id`. (This
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# allows us to not have to pull out the existing state
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# unnecessarily).
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sql = """
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INSERT INTO current_state_delta_stream
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(stream_id, room_id, type, state_key, event_id, prev_event_id)
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SELECT ?, ?, ?, ?, ?, (
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SELECT event_id FROM current_state_events
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WHERE room_id = ? AND type = ? AND state_key = ?
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)
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"""
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txn.executemany(sql, (
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(
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max_stream_order, room_id, etype, state_key, None,
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room_id, etype, state_key,
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)
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for etype, state_key in to_delete
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# We sanity check that we're deleting rather than updating
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if (etype, state_key) not in to_insert
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))
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txn.executemany(sql, (
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(
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max_stream_order, room_id, etype, state_key, ev_id,
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room_id, etype, state_key,
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)
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for (etype, state_key), ev_id in iteritems(to_insert)
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))
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# Now we actually update the current_state_events table
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txn.executemany(
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"DELETE FROM current_state_events WHERE event_id = ?",
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[(ev_id,) for ev_id in itervalues(to_delete)],
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"DELETE FROM current_state_events"
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" WHERE room_id = ? AND type = ? AND state_key = ?",
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(
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(room_id, etype, state_key)
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for etype, state_key in itertools.chain(to_delete, to_insert)
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),
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)
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self._simple_insert_many_txn(
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@ -784,25 +821,6 @@ class EventsStore(EventsWorkerStore):
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],
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)
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state_deltas = {key: None for key in to_delete}
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state_deltas.update(to_insert)
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self._simple_insert_many_txn(
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txn,
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table="current_state_delta_stream",
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values=[
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{
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"stream_id": max_stream_order,
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"room_id": room_id,
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"type": key[0],
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"state_key": key[1],
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"event_id": ev_id,
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"prev_event_id": to_delete.get(key, None),
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}
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for key, ev_id in iteritems(state_deltas)
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]
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)
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txn.call_after(
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self._curr_state_delta_stream_cache.entity_has_changed,
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room_id, max_stream_order,
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@ -816,7 +834,8 @@ class EventsStore(EventsWorkerStore):
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# and which we have added, then we invlidate the caches for all
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# those users.
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members_changed = set(
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state_key for ev_type, state_key in state_deltas
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state_key
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for ev_type, state_key in itertools.chain(to_delete, to_insert)
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if ev_type == EventTypes.Member
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)
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