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Merge pull request #5278 from matrix-org/erikj/cleanup_bad_extremities

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Add DB bg update to cleanup extremities.
This commit is contained in:
Erik Johnston 2019-05-30 14:28:26 +01:00 committed by GitHub
commit e9e5d3392d
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7 changed files with 685 additions and 181 deletions
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1
changelog.d/5278.bugfix Normal file
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@ -0,0 +1 @@
Fix bug where we leaked extremities when we soft failed events, leading to performance degradation.

2
synapse/storage/__init__.py
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@ -36,6 +36,7 @@ from .engines import PostgresEngine
from .event_federation import EventFederationStore
from .event_push_actions import EventPushActionsStore
from .events import EventsStore
from .events_bg_updates import EventsBackgroundUpdatesStore
from .filtering import FilteringStore
from .group_server import GroupServerStore
from .keys import KeyStore
@ -66,6 +67,7 @@ logger = logging.getLogger(__name__)
class DataStore(
EventsBackgroundUpdatesStore,
RoomMemberStore,
RoomStore,
RegistrationStore,

12
synapse/storage/_base.py
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@ -1261,7 +1261,8 @@ class SQLBaseStore(object):
" AND ".join("%s = ?" % (k,) for k in keyvalues),
)
return txn.execute(sql, list(keyvalues.values()))
txn.execute(sql, list(keyvalues.values()))
return txn.rowcount
def _simple_delete_many(self, table, column, iterable, keyvalues, desc):
return self.runInteraction(
@ -1280,9 +1281,12 @@ class SQLBaseStore(object):
column : column name to test for inclusion against `iterable`
iterable : list
keyvalues : dict of column names and values to select the rows with
Returns:
int: Number rows deleted
"""
if not iterable:
return
return 0
sql = "DELETE FROM %s" % table
@ -1297,7 +1301,9 @@ class SQLBaseStore(object):
if clauses:
sql = "%s WHERE %s" % (sql, " AND ".join(clauses))
return txn.execute(sql, values)
txn.execute(sql, values)
return txn.rowcount
def _get_cache_dict(
self, db_conn, table, entity_column, stream_column, max_value, limit=100000

180
synapse/storage/events.py
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@ -1,6 +1,7 @@
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 New Vector Ltd
# Copyright 2018-2019 New Vector Ltd
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@ -219,41 +220,11 @@ class EventsStore(
EventsWorkerStore,
BackgroundUpdateStore,
):
EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url"
def __init__(self, db_conn, hs):
super(EventsStore, self).__init__(db_conn, hs)
self.register_background_update_handler(
self.EVENT_ORIGIN_SERVER_TS_NAME, self._background_reindex_origin_server_ts
)
self.register_background_update_handler(
self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME,
self._background_reindex_fields_sender,
)
self.register_background_index_update(
"event_contains_url_index",
index_name="event_contains_url_index",
table="events",
columns=["room_id", "topological_ordering", "stream_ordering"],
where_clause="contains_url = true AND outlier = false",
)
# an event_id index on event_search is useful for the purge_history
# api. Plus it means we get to enforce some integrity with a UNIQUE
# clause
self.register_background_index_update(
"event_search_event_id_idx",
index_name="event_search_event_id_idx",
table="event_search",
columns=["event_id"],
unique=True,
psql_only=True,
)
self._event_persist_queue = _EventPeristenceQueue()
self._state_resolution_handler = hs.get_state_resolution_handler()
@defer.inlineCallbacks
@ -1579,153 +1550,6 @@ class EventsStore(
ret = yield self.runInteraction("count_daily_active_rooms", _count)
defer.returnValue(ret)
@defer.inlineCallbacks
def _background_reindex_fields_sender(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
rows_inserted = progress.get("rows_inserted", 0)
INSERT_CLUMP_SIZE = 1000
def reindex_txn(txn):
sql = (
"SELECT stream_ordering, event_id, json FROM events"
" INNER JOIN event_json USING (event_id)"
" WHERE ? <= stream_ordering AND stream_ordering < ?"
" ORDER BY stream_ordering DESC"
" LIMIT ?"
)
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = txn.fetchall()
if not rows:
return 0
min_stream_id = rows[-1][0]
update_rows = []
for row in rows:
try:
event_id = row[1]
event_json = json.loads(row[2])
sender = event_json["sender"]
content = event_json["content"]
contains_url = "url" in content
if contains_url:
contains_url &= isinstance(content["url"], text_type)
except (KeyError, AttributeError):
# If the event is missing a necessary field then
# skip over it.
continue
update_rows.append((sender, contains_url, event_id))
sql = "UPDATE events SET sender = ?, contains_url = ? WHERE event_id = ?"
for index in range(0, len(update_rows), INSERT_CLUMP_SIZE):
clump = update_rows[index : index + INSERT_CLUMP_SIZE]
txn.executemany(sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
"rows_inserted": rows_inserted + len(rows),
}
self._background_update_progress_txn(
txn, self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, progress
)
return len(rows)
result = yield self.runInteraction(
self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, reindex_txn
)
if not result:
yield self._end_background_update(self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME)
defer.returnValue(result)
@defer.inlineCallbacks
def _background_reindex_origin_server_ts(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
rows_inserted = progress.get("rows_inserted", 0)
INSERT_CLUMP_SIZE = 1000
def reindex_search_txn(txn):
sql = (
"SELECT stream_ordering, event_id FROM events"
" WHERE ? <= stream_ordering AND stream_ordering < ?"
" ORDER BY stream_ordering DESC"
" LIMIT ?"
)
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = txn.fetchall()
if not rows:
return 0
min_stream_id = rows[-1][0]
event_ids = [row[1] for row in rows]
rows_to_update = []
chunks = [event_ids[i : i + 100] for i in range(0, len(event_ids), 100)]
for chunk in chunks:
ev_rows = self._simple_select_many_txn(
txn,
table="event_json",
column="event_id",
iterable=chunk,
retcols=["event_id", "json"],
keyvalues={},
)
for row in ev_rows:
event_id = row["event_id"]
event_json = json.loads(row["json"])
try:
origin_server_ts = event_json["origin_server_ts"]
except (KeyError, AttributeError):
# If the event is missing a necessary field then
# skip over it.
continue
rows_to_update.append((origin_server_ts, event_id))
sql = "UPDATE events SET origin_server_ts = ? WHERE event_id = ?"
for index in range(0, len(rows_to_update), INSERT_CLUMP_SIZE):
clump = rows_to_update[index : index + INSERT_CLUMP_SIZE]
txn.executemany(sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
"rows_inserted": rows_inserted + len(rows_to_update),
}
self._background_update_progress_txn(
txn, self.EVENT_ORIGIN_SERVER_TS_NAME, progress
)
return len(rows_to_update)
result = yield self.runInteraction(
self.EVENT_ORIGIN_SERVER_TS_NAME, reindex_search_txn
)
if not result:
yield self._end_background_update(self.EVENT_ORIGIN_SERVER_TS_NAME)
defer.returnValue(result)
def get_current_backfill_token(self):
"""The current minimum token that backfilled events have reached"""
return -self._backfill_id_gen.get_current_token()

401
synapse/storage/events_bg_updates.py Normal file
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@ -0,0 +1,401 @@
# -*- coding: utf-8 -*-
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from six import text_type
from canonicaljson import json
from twisted.internet import defer
from synapse.storage.background_updates import BackgroundUpdateStore
logger = logging.getLogger(__name__)
class EventsBackgroundUpdatesStore(BackgroundUpdateStore):
EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url"
DELETE_SOFT_FAILED_EXTREMITIES = "delete_soft_failed_extremities"
def __init__(self, db_conn, hs):
super(EventsBackgroundUpdatesStore, self).__init__(db_conn, hs)
self.register_background_update_handler(
self.EVENT_ORIGIN_SERVER_TS_NAME, self._background_reindex_origin_server_ts
)
self.register_background_update_handler(
self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME,
self._background_reindex_fields_sender,
)
self.register_background_index_update(
"event_contains_url_index",
index_name="event_contains_url_index",
table="events",
columns=["room_id", "topological_ordering", "stream_ordering"],
where_clause="contains_url = true AND outlier = false",
)
# an event_id index on event_search is useful for the purge_history
# api. Plus it means we get to enforce some integrity with a UNIQUE
# clause
self.register_background_index_update(
"event_search_event_id_idx",
index_name="event_search_event_id_idx",
table="event_search",
columns=["event_id"],
unique=True,
psql_only=True,
)
self.register_background_update_handler(
self.DELETE_SOFT_FAILED_EXTREMITIES,
self._cleanup_extremities_bg_update,
)
@defer.inlineCallbacks
def _background_reindex_fields_sender(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
rows_inserted = progress.get("rows_inserted", 0)
INSERT_CLUMP_SIZE = 1000
def reindex_txn(txn):
sql = (
"SELECT stream_ordering, event_id, json FROM events"
" INNER JOIN event_json USING (event_id)"
" WHERE ? <= stream_ordering AND stream_ordering < ?"
" ORDER BY stream_ordering DESC"
" LIMIT ?"
)
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = txn.fetchall()
if not rows:
return 0
min_stream_id = rows[-1][0]
update_rows = []
for row in rows:
try:
event_id = row[1]
event_json = json.loads(row[2])
sender = event_json["sender"]
content = event_json["content"]
contains_url = "url" in content
if contains_url:
contains_url &= isinstance(content["url"], text_type)
except (KeyError, AttributeError):
# If the event is missing a necessary field then
# skip over it.
continue
update_rows.append((sender, contains_url, event_id))
sql = "UPDATE events SET sender = ?, contains_url = ? WHERE event_id = ?"
for index in range(0, len(update_rows), INSERT_CLUMP_SIZE):
clump = update_rows[index : index + INSERT_CLUMP_SIZE]
txn.executemany(sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
"rows_inserted": rows_inserted + len(rows),
}
self._background_update_progress_txn(
txn, self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, progress
)
return len(rows)
result = yield self.runInteraction(
self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, reindex_txn
)
if not result:
yield self._end_background_update(self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME)
defer.returnValue(result)
@defer.inlineCallbacks
def _background_reindex_origin_server_ts(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
rows_inserted = progress.get("rows_inserted", 0)
INSERT_CLUMP_SIZE = 1000
def reindex_search_txn(txn):
sql = (
"SELECT stream_ordering, event_id FROM events"
" WHERE ? <= stream_ordering AND stream_ordering < ?"
" ORDER BY stream_ordering DESC"
" LIMIT ?"
)
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = txn.fetchall()
if not rows:
return 0
min_stream_id = rows[-1][0]
event_ids = [row[1] for row in rows]
rows_to_update = []
chunks = [event_ids[i : i + 100] for i in range(0, len(event_ids), 100)]
for chunk in chunks:
ev_rows = self._simple_select_many_txn(
txn,
table="event_json",
column="event_id",
iterable=chunk,
retcols=["event_id", "json"],
keyvalues={},
)
for row in ev_rows:
event_id = row["event_id"]
event_json = json.loads(row["json"])
try:
origin_server_ts = event_json["origin_server_ts"]
except (KeyError, AttributeError):
# If the event is missing a necessary field then
# skip over it.
continue
rows_to_update.append((origin_server_ts, event_id))
sql = "UPDATE events SET origin_server_ts = ? WHERE event_id = ?"
for index in range(0, len(rows_to_update), INSERT_CLUMP_SIZE):
clump = rows_to_update[index : index + INSERT_CLUMP_SIZE]
txn.executemany(sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
"rows_inserted": rows_inserted + len(rows_to_update),
}
self._background_update_progress_txn(
txn, self.EVENT_ORIGIN_SERVER_TS_NAME, progress
)
return len(rows_to_update)
result = yield self.runInteraction(
self.EVENT_ORIGIN_SERVER_TS_NAME, reindex_search_txn
)
if not result:
yield self._end_background_update(self.EVENT_ORIGIN_SERVER_TS_NAME)
defer.returnValue(result)
@defer.inlineCallbacks
def _cleanup_extremities_bg_update(self, progress, batch_size):
"""Background update to clean out extremities that should have been
deleted previously.
Mainly used to deal with the aftermath of #5269.
"""
# This works by first copying all existing forward extremities into the
# `_extremities_to_check` table at start up, and then checking each
# event in that table whether we have any descendants that are not
# soft-failed/rejected. If that is the case then we delete that event
# from the forward extremities table.
#
# For efficiency, we do this in batches by recursively pulling out all
# descendants of a batch until we find the non soft-failed/rejected
# events, i.e. the set of descendants whose chain of prev events back
# to the batch of extremities are all soft-failed or rejected.
# Typically, we won't find any such events as extremities will rarely
# have any descendants, but if they do then we should delete those
# extremities.
def _cleanup_extremities_bg_update_txn(txn):
# The set of extremity event IDs that we're checking this round
original_set = set()
# A dict[str, set[str]] of event ID to their prev events.
graph = {}
# The set of descendants of the original set that are not rejected
# nor soft-failed. Ancestors of these events should be removed
# from the forward extremities table.
non_rejected_leaves = set()
# Set of event IDs that have been soft failed, and for which we
# should check if they have descendants which haven't been soft
# failed.
soft_failed_events_to_lookup = set()
# First, we get `batch_size` events from the table, pulling out
# their successor events, if any, and the successor events'
# rejection status.
txn.execute(
"""SELECT prev_event_id, event_id, internal_metadata,
rejections.event_id IS NOT NULL, events.outlier
FROM (
SELECT event_id AS prev_event_id
FROM _extremities_to_check
LIMIT ?
) AS f
LEFT JOIN event_edges USING (prev_event_id)
LEFT JOIN events USING (event_id)
LEFT JOIN event_json USING (event_id)
LEFT JOIN rejections USING (event_id)
""", (batch_size,)
)
for prev_event_id, event_id, metadata, rejected, outlier in txn:
original_set.add(prev_event_id)
if not event_id or outlier:
# Common case where the forward extremity doesn't have any
# descendants.
continue
graph.setdefault(event_id, set()).add(prev_event_id)
soft_failed = False
if metadata:
soft_failed = json.loads(metadata).get("soft_failed")
if soft_failed or rejected:
soft_failed_events_to_lookup.add(event_id)
else:
non_rejected_leaves.add(event_id)
# Now we recursively check all the soft-failed descendants we
# found above in the same way, until we have nothing left to
# check.
while soft_failed_events_to_lookup:
# We only want to do 100 at a time, so we split given list
# into two.
batch = list(soft_failed_events_to_lookup)
to_check, to_defer = batch[:100], batch[100:]
soft_failed_events_to_lookup = set(to_defer)
sql = """SELECT prev_event_id, event_id, internal_metadata,
rejections.event_id IS NOT NULL
FROM event_edges
INNER JOIN events USING (event_id)
INNER JOIN event_json USING (event_id)
LEFT JOIN rejections USING (event_id)
WHERE
prev_event_id IN (%s)
AND NOT events.outlier
""" % (
",".join("?" for _ in to_check),
)
txn.execute(sql, to_check)
for prev_event_id, event_id, metadata, rejected in txn:
if event_id in graph:
# Already handled this event previously, but we still
# want to record the edge.
graph[event_id].add(prev_event_id)
continue
graph[event_id] = {prev_event_id}
soft_failed = json.loads(metadata).get("soft_failed")
if soft_failed or rejected:
soft_failed_events_to_lookup.add(event_id)
else:
non_rejected_leaves.add(event_id)
# We have a set of non-soft-failed descendants, so we recurse up
# the graph to find all ancestors and add them to the set of event
# IDs that we can delete from forward extremities table.
to_delete = set()
while non_rejected_leaves:
event_id = non_rejected_leaves.pop()
prev_event_ids = graph.get(event_id, set())
non_rejected_leaves.update(prev_event_ids)
to_delete.update(prev_event_ids)
to_delete.intersection_update(original_set)
deleted = self._simple_delete_many_txn(
txn=txn,
table="event_forward_extremities",
column="event_id",
iterable=to_delete,
keyvalues={},
)
logger.info(
"Deleted %d forward extremities of %d checked, to clean up #5269",
deleted,
len(original_set),
)
if deleted:
# We now need to invalidate the caches of these rooms
rows = self._simple_select_many_txn(
txn,
table="events",
column="event_id",
iterable=to_delete,
keyvalues={},
retcols=("room_id",)
)
room_ids = set(row["room_id"] for row in rows)
for room_id in room_ids:
txn.call_after(
self.get_latest_event_ids_in_room.invalidate,
(room_id,)
)
self._simple_delete_many_txn(
txn=txn,
table="_extremities_to_check",
column="event_id",
iterable=original_set,
keyvalues={},
)
return len(original_set)
num_handled = yield self.runInteraction(
"_cleanup_extremities_bg_update", _cleanup_extremities_bg_update_txn,
)
if not num_handled:
yield self._end_background_update(self.DELETE_SOFT_FAILED_EXTREMITIES)
def _drop_table_txn(txn):
txn.execute("DROP TABLE _extremities_to_check")
yield self.runInteraction(
"_cleanup_extremities_bg_update_drop_table",
_drop_table_txn,
)
defer.returnValue(num_handled)

22
synapse/storage/schema/delta/54/delete_forward_extremities.sql Normal file
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@ -0,0 +1,22 @@
/* Copyright 2019 The Matrix.org Foundation C.I.C.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-- Start a background job to cleanup extremities that were incorrectly added
-- by bug #5269.
INSERT INTO background_updates (update_name, progress_json) VALUES
('delete_soft_failed_extremities', '{}');
DROP TABLE IF EXISTS _extremities_to_check; -- To make this delta schema file idempotent.
CREATE TABLE _extremities_to_check AS SELECT event_id FROM event_forward_extremities;

248
tests/storage/test_cleanup_extrems.py Normal file
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@ -0,0 +1,248 @@
# -*- coding: utf-8 -*-
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os.path
from synapse.api.constants import EventTypes
from synapse.storage import prepare_database
from synapse.types import Requester, UserID
from tests.unittest import HomeserverTestCase
class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
"""Test the background update to clean forward extremities table.
"""
def prepare(self, reactor, clock, homeserver):
self.store = homeserver.get_datastore()
self.event_creator = homeserver.get_event_creation_handler()
self.room_creator = homeserver.get_room_creation_handler()
# Create a test user and room
self.user = UserID("alice", "test")
self.requester = Requester(self.user, None, False, None, None)
info = self.get_success(self.room_creator.create_room(self.requester, {}))
self.room_id = info["room_id"]
def create_and_send_event(self, soft_failed=False, prev_event_ids=None):
"""Create and send an event.
Args:
soft_failed (bool): Whether to create a soft failed event or not
prev_event_ids (list[str]|None): Explicitly set the prev events,
or if None just use the default
Returns:
str: The new event's ID.
"""
prev_events_and_hashes = None
if prev_event_ids:
prev_events_and_hashes = [[p, {}, 0] for p in prev_event_ids]
event, context = self.get_success(
self.event_creator.create_event(
self.requester,
{
"type": EventTypes.Message,
"room_id": self.room_id,
"sender": self.user.to_string(),
"content": {"body": "", "msgtype": "m.text"},
},
prev_events_and_hashes=prev_events_and_hashes,
)
)
if soft_failed:
event.internal_metadata.soft_failed = True
self.get_success(
self.event_creator.send_nonmember_event(self.requester, event, context)
)
return event.event_id
def add_extremity(self, event_id):
"""Add the given event as an extremity to the room.
"""
self.get_success(
self.store._simple_insert(
table="event_forward_extremities",
values={"room_id": self.room_id, "event_id": event_id},
desc="test_add_extremity",
)
)
self.store.get_latest_event_ids_in_room.invalidate((self.room_id,))
def run_background_update(self):
"""Re run the background update to clean up the extremities.
"""
# Make sure we don't clash with in progress updates.
self.assertTrue(self.store._all_done, "Background updates are still ongoing")
schema_path = os.path.join(
prepare_database.dir_path,
"schema",
"delta",
"54",
"delete_forward_extremities.sql",
)
def run_delta_file(txn):
prepare_database.executescript(txn, schema_path)
self.get_success(
self.store.runInteraction("test_delete_forward_extremities", run_delta_file)
)
# Ugh, have to reset this flag
self.store._all_done = False
while not self.get_success(self.store.has_completed_background_updates()):
self.get_success(self.store.do_next_background_update(100), by=0.1)
def test_soft_failed_extremities_handled_correctly(self):
"""Test that extremities are correctly calculated in the presence of
soft failed events.
Tests a graph like:
A <- SF1 <- SF2 <- B
Where SF* are soft failed.
"""
# Create the room graph
event_id_1 = self.create_and_send_event()
event_id_2 = self.create_and_send_event(True, [event_id_1])
event_id_3 = self.create_and_send_event(True, [event_id_2])
event_id_4 = self.create_and_send_event(False, [event_id_3])
# Check the latest events are as expected
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(latest_event_ids, [event_id_4])
def test_basic_cleanup(self):
"""Test that extremities are correctly calculated in the presence of
soft failed events.
Tests a graph like:
A <- SF1 <- B
Where SF* are soft failed, and with extremities of A and B
"""
# Create the room graph
event_id_a = self.create_and_send_event()
event_id_sf1 = self.create_and_send_event(True, [event_id_a])
event_id_b = self.create_and_send_event(False, [event_id_sf1])
# Add the new extremity and check the latest events are as expected
self.add_extremity(event_id_a)
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(set(latest_event_ids), set((event_id_a, event_id_b)))
# Run the background update and check it did the right thing
self.run_background_update()
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(latest_event_ids, [event_id_b])
def test_chain_of_fail_cleanup(self):
"""Test that extremities are correctly calculated in the presence of
soft failed events.
Tests a graph like:
A <- SF1 <- SF2 <- B
Where SF* are soft failed, and with extremities of A and B
"""
# Create the room graph
event_id_a = self.create_and_send_event()
event_id_sf1 = self.create_and_send_event(True, [event_id_a])
event_id_sf2 = self.create_and_send_event(True, [event_id_sf1])
event_id_b = self.create_and_send_event(False, [event_id_sf2])
# Add the new extremity and check the latest events are as expected
self.add_extremity(event_id_a)
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(set(latest_event_ids), set((event_id_a, event_id_b)))
# Run the background update and check it did the right thing
self.run_background_update()
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(latest_event_ids, [event_id_b])
def test_forked_graph_cleanup(self):
r"""Test that extremities are correctly calculated in the presence of
soft failed events.
Tests a graph like, where time flows down the page:
A B
/ \ /
/ \ /
SF1 SF2
| |
SF3 |
/ \ |
| \ |
C SF4
Where SF* are soft failed, and with them A, B and C marked as
extremities. This should resolve to B and C being marked as extremity.
"""
# Create the room graph
event_id_a = self.create_and_send_event()
event_id_b = self.create_and_send_event()
event_id_sf1 = self.create_and_send_event(True, [event_id_a])
event_id_sf2 = self.create_and_send_event(True, [event_id_a, event_id_b])
event_id_sf3 = self.create_and_send_event(True, [event_id_sf1])
self.create_and_send_event(True, [event_id_sf2, event_id_sf3]) # SF4
event_id_c = self.create_and_send_event(False, [event_id_sf3])
# Add the new extremity and check the latest events are as expected
self.add_extremity(event_id_a)
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(
set(latest_event_ids), set((event_id_a, event_id_b, event_id_c))
)
# Run the background update and check it did the right thing
self.run_background_update()
latest_event_ids = self.get_success(
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(set(latest_event_ids), set([event_id_b, event_id_c]))