mirror of https://mau.dev/maunium/synapse.git
1213 lines
42 KiB
Python
1213 lines
42 KiB
Python
# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the 'License');
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an 'AS IS' BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import datetime
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from typing import (
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Collection,
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Dict,
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FrozenSet,
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Iterable,
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List,
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Mapping,
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Set,
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Tuple,
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TypeVar,
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Union,
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cast,
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)
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import attr
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from parameterized import parameterized
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from twisted.test.proto_helpers import MemoryReactor
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from synapse.api.constants import EventTypes
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from synapse.api.room_versions import (
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KNOWN_ROOM_VERSIONS,
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EventFormatVersions,
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RoomVersion,
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)
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from synapse.events import EventBase, _EventInternalMetadata
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from synapse.rest import admin
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from synapse.rest.client import login, room
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from synapse.server import HomeServer
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from synapse.storage.database import LoggingTransaction
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from synapse.storage.types import Cursor
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from synapse.types import JsonDict
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from synapse.util import Clock, json_encoder
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import tests.unittest
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import tests.utils
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# The silly auth graph we use to test the auth difference algorithm,
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# where the top are the most recent events.
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#
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# A B
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# \ /
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# D E
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# \ |
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# ` F C
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# | /|
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# G ´ |
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# | \ |
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# H I
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# | |
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# K J
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AUTH_GRAPH: Dict[str, List[str]] = {
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"a": ["e"],
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"b": ["e"],
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"c": ["g", "i"],
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"d": ["f"],
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"e": ["f"],
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"f": ["g"],
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"g": ["h", "i"],
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"h": ["k"],
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"i": ["j"],
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"k": [],
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"j": [],
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}
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DEPTH_GRAPH = {
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"a": 7,
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"b": 7,
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"c": 4,
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"d": 6,
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"e": 6,
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"f": 5,
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"g": 3,
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"h": 2,
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"i": 2,
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"k": 1,
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"j": 1,
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}
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T = TypeVar("T")
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def get_all_topologically_sorted_orders(
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nodes: Iterable[T],
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graph: Mapping[T, Collection[T]],
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) -> List[List[T]]:
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"""Given a set of nodes and a graph, return all possible topological
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orderings.
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"""
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# This is implemented by Kahn's algorithm, and forking execution each time
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# we have a choice over which node to consider next.
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degree_map = {node: 0 for node in nodes}
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reverse_graph: Dict[T, Set[T]] = {}
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for node, edges in graph.items():
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if node not in degree_map:
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continue
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for edge in set(edges):
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if edge in degree_map:
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degree_map[node] += 1
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reverse_graph.setdefault(edge, set()).add(node)
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reverse_graph.setdefault(node, set())
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zero_degree = [node for node, degree in degree_map.items() if degree == 0]
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return _get_all_topologically_sorted_orders_inner(
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reverse_graph, zero_degree, degree_map
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)
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def _get_all_topologically_sorted_orders_inner(
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reverse_graph: Dict[T, Set[T]],
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zero_degree: List[T],
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degree_map: Dict[T, int],
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) -> List[List[T]]:
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new_paths = []
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# Rather than only choosing *one* item from the list of nodes with zero
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# degree, we "fork" execution and run the algorithm for each node in the
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# zero degree.
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for node in zero_degree:
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new_degree_map = degree_map.copy()
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new_zero_degree = zero_degree.copy()
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new_zero_degree.remove(node)
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for edge in reverse_graph.get(node, []):
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if edge in new_degree_map:
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new_degree_map[edge] -= 1
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if new_degree_map[edge] == 0:
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new_zero_degree.append(edge)
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paths = _get_all_topologically_sorted_orders_inner(
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reverse_graph, new_zero_degree, new_degree_map
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)
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for path in paths:
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path.insert(0, node)
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new_paths.extend(paths)
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if not new_paths:
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return [[]]
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return new_paths
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def get_all_topologically_consistent_subsets(
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nodes: Iterable[T],
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graph: Mapping[T, Collection[T]],
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) -> Set[FrozenSet[T]]:
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"""Get all subsets of the graph where if node N is in the subgraph, then all
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nodes that can reach that node (i.e. for all X there exists a path X -> N)
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are in the subgraph.
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"""
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all_topological_orderings = get_all_topologically_sorted_orders(nodes, graph)
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graph_subsets = set()
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for ordering in all_topological_orderings:
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ordering.reverse()
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for idx in range(len(ordering)):
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graph_subsets.add(frozenset(ordering[:idx]))
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return graph_subsets
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@attr.s(auto_attribs=True, frozen=True, slots=True)
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class _BackfillSetupInfo:
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room_id: str
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depth_map: Dict[str, int]
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class EventFederationWorkerStoreTestCase(tests.unittest.HomeserverTestCase):
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servlets = [
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admin.register_servlets,
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room.register_servlets,
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login.register_servlets,
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]
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def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
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self.store = hs.get_datastores().main
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persist_events = hs.get_datastores().persist_events
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assert persist_events is not None
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self.persist_events = persist_events
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def test_get_prev_events_for_room(self) -> None:
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room_id = "@ROOM:local"
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# add a bunch of events and hashes to act as forward extremities
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def insert_event(txn: Cursor, i: int) -> None:
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event_id = "$event_%i:local" % i
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txn.execute(
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(
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"INSERT INTO events ("
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" room_id, event_id, type, depth, topological_ordering,"
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" content, processed, outlier, stream_ordering) "
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"VALUES (?, ?, 'm.test', ?, ?, 'test', ?, ?, ?)"
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),
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(room_id, event_id, i, i, True, False, i),
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)
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txn.execute(
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(
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"INSERT INTO event_forward_extremities (room_id, event_id) "
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"VALUES (?, ?)"
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),
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(room_id, event_id),
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)
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for i in range(20):
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self.get_success(
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self.store.db_pool.runInteraction("insert", insert_event, i)
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)
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# this should get the last ten
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r = self.get_success(self.store.get_prev_events_for_room(room_id))
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self.assertEqual(10, len(r))
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for i in range(10):
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self.assertEqual("$event_%i:local" % (19 - i), r[i])
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def test_get_rooms_with_many_extremities(self) -> None:
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room1 = "#room1"
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room2 = "#room2"
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room3 = "#room3"
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def insert_event(txn: LoggingTransaction, i: int, room_id: str) -> None:
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event_id = "$event_%i:local" % i
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# We need to insert into events table to get around the foreign key constraint.
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self.store.db_pool.simple_insert_txn(
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txn,
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table="events",
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values={
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"instance_name": "master",
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"stream_ordering": self.store._stream_id_gen.get_next_txn(txn),
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"topological_ordering": 1,
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"depth": 1,
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"event_id": event_id,
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"room_id": room_id,
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"type": EventTypes.Message,
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"processed": True,
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"outlier": False,
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"origin_server_ts": 0,
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"received_ts": 0,
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"sender": "@user:local",
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"contains_url": False,
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"state_key": None,
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"rejection_reason": None,
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},
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)
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txn.execute(
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(
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"INSERT INTO event_forward_extremities (room_id, event_id) "
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"VALUES (?, ?)"
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),
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(room_id, event_id),
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)
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for i in range(20):
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self.get_success(
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self.store.db_pool.runInteraction("insert", insert_event, i, room1)
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)
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self.get_success(
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self.store.db_pool.runInteraction(
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"insert", insert_event, i + 100, room2
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)
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)
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self.get_success(
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self.store.db_pool.runInteraction(
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"insert", insert_event, i + 200, room3
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)
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)
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# Test simple case
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r = self.get_success(self.store.get_rooms_with_many_extremities(5, 5, []))
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self.assertEqual(len(r), 3)
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# Does filter work?
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r = self.get_success(self.store.get_rooms_with_many_extremities(5, 5, [room1]))
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self.assertTrue(room2 in r)
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self.assertTrue(room3 in r)
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self.assertEqual(len(r), 2)
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r = self.get_success(
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self.store.get_rooms_with_many_extremities(5, 5, [room1, room2])
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)
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self.assertEqual(r, [room3])
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# Does filter and limit work?
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r = self.get_success(self.store.get_rooms_with_many_extremities(5, 1, [room1]))
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self.assertTrue(r == [room2] or r == [room3])
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def _setup_auth_chain(self, use_chain_cover_index: bool) -> str:
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room_id = "@ROOM:local"
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# Mark the room as maybe having a cover index.
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def store_room(txn: LoggingTransaction) -> None:
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self.store.db_pool.simple_insert_txn(
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txn,
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"rooms",
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{
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"room_id": room_id,
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"creator": "room_creator_user_id",
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"is_public": True,
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"room_version": "6",
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"has_auth_chain_index": use_chain_cover_index,
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},
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)
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self.get_success(self.store.db_pool.runInteraction("store_room", store_room))
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# We rudely fiddle with the appropriate tables directly, as that's much
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# easier than constructing events properly.
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def insert_event(txn: LoggingTransaction) -> None:
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stream_ordering = 0
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for event_id in AUTH_GRAPH:
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stream_ordering += 1
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depth = DEPTH_GRAPH[event_id]
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self.store.db_pool.simple_insert_txn(
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txn,
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table="events",
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values={
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"event_id": event_id,
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"room_id": room_id,
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"depth": depth,
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"topological_ordering": depth,
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"type": "m.test",
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"processed": True,
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"outlier": False,
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"stream_ordering": stream_ordering,
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},
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)
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self.persist_events._persist_event_auth_chain_txn(
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txn,
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[
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cast(EventBase, FakeEvent(event_id, room_id, AUTH_GRAPH[event_id]))
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for event_id in AUTH_GRAPH
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],
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)
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self.get_success(
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self.store.db_pool.runInteraction(
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"insert",
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insert_event,
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)
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)
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return room_id
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@parameterized.expand([(True,), (False,)])
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def test_auth_chain_ids(self, use_chain_cover_index: bool) -> None:
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room_id = self._setup_auth_chain(use_chain_cover_index)
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# a and b have the same auth chain.
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["a"]))
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self.assertCountEqual(auth_chain_ids, ["e", "f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["b"]))
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self.assertCountEqual(auth_chain_ids, ["e", "f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(
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self.store.get_auth_chain_ids(room_id, ["a", "b"])
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)
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self.assertCountEqual(auth_chain_ids, ["e", "f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["c"]))
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self.assertCountEqual(auth_chain_ids, ["g", "h", "i", "j", "k"])
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# d and e have the same auth chain.
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["d"]))
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self.assertCountEqual(auth_chain_ids, ["f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["e"]))
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self.assertCountEqual(auth_chain_ids, ["f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["f"]))
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self.assertCountEqual(auth_chain_ids, ["g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["g"]))
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self.assertCountEqual(auth_chain_ids, ["h", "i", "j", "k"])
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["h"]))
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self.assertEqual(auth_chain_ids, {"k"})
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["i"]))
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self.assertEqual(auth_chain_ids, {"j"})
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# j and k have no parents.
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["j"]))
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self.assertEqual(auth_chain_ids, set())
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auth_chain_ids = self.get_success(self.store.get_auth_chain_ids(room_id, ["k"]))
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self.assertEqual(auth_chain_ids, set())
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# More complex input sequences.
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auth_chain_ids = self.get_success(
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self.store.get_auth_chain_ids(room_id, ["b", "c", "d"])
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)
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self.assertCountEqual(auth_chain_ids, ["e", "f", "g", "h", "i", "j", "k"])
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auth_chain_ids = self.get_success(
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self.store.get_auth_chain_ids(room_id, ["h", "i"])
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)
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self.assertCountEqual(auth_chain_ids, ["k", "j"])
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# e gets returned even though include_given is false, but it is in the
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# auth chain of b.
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auth_chain_ids = self.get_success(
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self.store.get_auth_chain_ids(room_id, ["b", "e"])
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)
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self.assertCountEqual(auth_chain_ids, ["e", "f", "g", "h", "i", "j", "k"])
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# Test include_given.
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auth_chain_ids = self.get_success(
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self.store.get_auth_chain_ids(room_id, ["i"], include_given=True)
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)
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self.assertCountEqual(auth_chain_ids, ["i", "j"])
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@parameterized.expand([(True,), (False,)])
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def test_auth_difference(self, use_chain_cover_index: bool) -> None:
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room_id = self._setup_auth_chain(use_chain_cover_index)
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# Now actually test that various combinations give the right result:
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self.assert_auth_diff_is_expected(room_id)
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@parameterized.expand(
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[
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[graph_subset]
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for graph_subset in get_all_topologically_consistent_subsets(
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AUTH_GRAPH, AUTH_GRAPH
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)
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]
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)
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def test_auth_difference_partial(self, graph_subset: Collection[str]) -> None:
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"""Test that if we only have a chain cover index on a partial subset of
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the room we still get the correct auth chain difference.
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We do this by removing the chain cover index for every valid subset of the
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graph.
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"""
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room_id = self._setup_auth_chain(True)
|
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|
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for event_id in graph_subset:
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# Remove chain cover from that event.
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self.get_success(
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self.store.db_pool.simple_delete(
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table="event_auth_chains",
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keyvalues={"event_id": event_id},
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desc="test_auth_difference_partial_remove",
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)
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)
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self.get_success(
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self.store.db_pool.simple_insert(
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table="event_auth_chain_to_calculate",
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||
values={
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"event_id": event_id,
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||
"room_id": room_id,
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||
"type": "",
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||
"state_key": "",
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||
},
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desc="test_auth_difference_partial_remove",
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)
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)
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self.assert_auth_diff_is_expected(room_id)
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||
def assert_auth_diff_is_expected(self, room_id: str) -> None:
|
||
"""Assert the auth chain difference returns the correct answers."""
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||
difference = self.get_success(
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self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}])
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||
)
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self.assertSetEqual(difference, {"a", "b"})
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difference = self.get_success(
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self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"c"}])
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)
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self.assertSetEqual(difference, {"a", "b", "c", "e", "f"})
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||
|
||
difference = self.get_success(
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self.store.get_auth_chain_difference(room_id, [{"a", "c"}, {"b"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "c"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a", "c"}, {"b", "c"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"d"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "d", "e"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"c"}, {"d"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "c", "d", "e", "f"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"e"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}])
|
||
)
|
||
self.assertSetEqual(difference, set())
|
||
|
||
def test_auth_difference_partial_cover(self) -> None:
|
||
"""Test that we correctly handle rooms where not all events have a chain
|
||
cover calculated. This can happen in some obscure edge cases, including
|
||
during the background update that calculates the chain cover for old
|
||
rooms.
|
||
"""
|
||
|
||
room_id = "@ROOM:local"
|
||
|
||
# The silly auth graph we use to test the auth difference algorithm,
|
||
# where the top are the most recent events.
|
||
#
|
||
# A B
|
||
# \ /
|
||
# D E
|
||
# \ |
|
||
# ` F C
|
||
# | /|
|
||
# G ´ |
|
||
# | \ |
|
||
# H I
|
||
# | |
|
||
# K J
|
||
|
||
auth_graph: Dict[str, List[str]] = {
|
||
"a": ["e"],
|
||
"b": ["e"],
|
||
"c": ["g", "i"],
|
||
"d": ["f"],
|
||
"e": ["f"],
|
||
"f": ["g"],
|
||
"g": ["h", "i"],
|
||
"h": ["k"],
|
||
"i": ["j"],
|
||
"k": [],
|
||
"j": [],
|
||
}
|
||
|
||
depth_map = {
|
||
"a": 7,
|
||
"b": 7,
|
||
"c": 4,
|
||
"d": 6,
|
||
"e": 6,
|
||
"f": 5,
|
||
"g": 3,
|
||
"h": 2,
|
||
"i": 2,
|
||
"k": 1,
|
||
"j": 1,
|
||
}
|
||
|
||
# We rudely fiddle with the appropriate tables directly, as that's much
|
||
# easier than constructing events properly.
|
||
|
||
def insert_event(txn: LoggingTransaction) -> None:
|
||
# First insert the room and mark it as having a chain cover.
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
"rooms",
|
||
{
|
||
"room_id": room_id,
|
||
"creator": "room_creator_user_id",
|
||
"is_public": True,
|
||
"room_version": "6",
|
||
"has_auth_chain_index": True,
|
||
},
|
||
)
|
||
|
||
stream_ordering = 0
|
||
|
||
for event_id in auth_graph:
|
||
stream_ordering += 1
|
||
depth = depth_map[event_id]
|
||
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
table="events",
|
||
values={
|
||
"event_id": event_id,
|
||
"room_id": room_id,
|
||
"depth": depth,
|
||
"topological_ordering": depth,
|
||
"type": "m.test",
|
||
"processed": True,
|
||
"outlier": False,
|
||
"stream_ordering": stream_ordering,
|
||
},
|
||
)
|
||
|
||
# Insert all events apart from 'B'
|
||
self.persist_events._persist_event_auth_chain_txn(
|
||
txn,
|
||
[
|
||
cast(EventBase, FakeEvent(event_id, room_id, auth_graph[event_id]))
|
||
for event_id in auth_graph
|
||
if event_id != "b"
|
||
],
|
||
)
|
||
|
||
# Now we insert the event 'B' without a chain cover, by temporarily
|
||
# pretending the room doesn't have a chain cover.
|
||
|
||
self.store.db_pool.simple_update_txn(
|
||
txn,
|
||
table="rooms",
|
||
keyvalues={"room_id": room_id},
|
||
updatevalues={"has_auth_chain_index": False},
|
||
)
|
||
|
||
self.persist_events._persist_event_auth_chain_txn(
|
||
txn,
|
||
[cast(EventBase, FakeEvent("b", room_id, auth_graph["b"]))],
|
||
)
|
||
|
||
self.store.db_pool.simple_update_txn(
|
||
txn,
|
||
table="rooms",
|
||
keyvalues={"room_id": room_id},
|
||
updatevalues={"has_auth_chain_index": True},
|
||
)
|
||
|
||
self.get_success(
|
||
self.store.db_pool.runInteraction(
|
||
"insert",
|
||
insert_event,
|
||
)
|
||
)
|
||
|
||
# Now actually test that various combinations give the right result:
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"c"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "c", "e", "f"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a", "c"}, {"b"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "c"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a", "c"}, {"b", "c"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"d"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "d", "e"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"c"}, {"d"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b", "c", "d", "e", "f"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}, {"b"}, {"e"}])
|
||
)
|
||
self.assertSetEqual(difference, {"a", "b"})
|
||
|
||
difference = self.get_success(
|
||
self.store.get_auth_chain_difference(room_id, [{"a"}])
|
||
)
|
||
self.assertSetEqual(difference, set())
|
||
|
||
@parameterized.expand(
|
||
[(room_version,) for room_version in KNOWN_ROOM_VERSIONS.values()]
|
||
)
|
||
def test_prune_inbound_federation_queue(self, room_version: RoomVersion) -> None:
|
||
"""Test that pruning of inbound federation queues work"""
|
||
|
||
room_id = "some_room_id"
|
||
|
||
def prev_event_format(prev_event_id: str) -> Union[Tuple[str, dict], str]:
|
||
"""Account for differences in prev_events format across room versions"""
|
||
if room_version.event_format == EventFormatVersions.ROOM_V1_V2:
|
||
return prev_event_id, {}
|
||
|
||
return prev_event_id
|
||
|
||
# Insert a bunch of events that all reference the previous one.
|
||
self.get_success(
|
||
self.store.db_pool.simple_insert_many(
|
||
table="federation_inbound_events_staging",
|
||
keys=(
|
||
"origin",
|
||
"room_id",
|
||
"received_ts",
|
||
"event_id",
|
||
"event_json",
|
||
"internal_metadata",
|
||
),
|
||
values=[
|
||
(
|
||
"some_origin",
|
||
room_id,
|
||
0,
|
||
f"$fake_event_id_{i + 1}",
|
||
json_encoder.encode(
|
||
{"prev_events": [prev_event_format(f"$fake_event_id_{i}")]}
|
||
),
|
||
"{}",
|
||
)
|
||
for i in range(500)
|
||
],
|
||
desc="test_prune_inbound_federation_queue",
|
||
)
|
||
)
|
||
|
||
# Calling prune once should return True, i.e. a prune happen. The second
|
||
# time it shouldn't.
|
||
pruned = self.get_success(
|
||
self.store.prune_staged_events_in_room(room_id, room_version)
|
||
)
|
||
self.assertTrue(pruned)
|
||
|
||
pruned = self.get_success(
|
||
self.store.prune_staged_events_in_room(room_id, room_version)
|
||
)
|
||
self.assertFalse(pruned)
|
||
|
||
# Assert that we only have a single event left in the queue, and that it
|
||
# is the last one.
|
||
count = self.get_success(
|
||
self.store.db_pool.simple_select_one_onecol(
|
||
table="federation_inbound_events_staging",
|
||
keyvalues={"room_id": room_id},
|
||
retcol="COUNT(*)",
|
||
desc="test_prune_inbound_federation_queue",
|
||
)
|
||
)
|
||
self.assertEqual(count, 1)
|
||
|
||
next_staged_event_info = self.get_success(
|
||
self.store.get_next_staged_event_id_for_room(room_id)
|
||
)
|
||
assert next_staged_event_info
|
||
_, event_id = next_staged_event_info
|
||
self.assertEqual(event_id, "$fake_event_id_500")
|
||
|
||
def _setup_room_for_backfill_tests(self) -> _BackfillSetupInfo:
|
||
"""
|
||
Sets up a room with various events and backward extremities to test
|
||
backfill functions against.
|
||
|
||
Returns:
|
||
_BackfillSetupInfo including the `room_id` to test against and
|
||
`depth_map` of events in the room
|
||
"""
|
||
room_id = "!backfill-room-test:some-host"
|
||
|
||
# The silly graph we use to test grabbing backward extremities,
|
||
# where the top is the oldest events.
|
||
# 1 (oldest)
|
||
# |
|
||
# 2 ⹁
|
||
# | \
|
||
# | [b1, b2, b3]
|
||
# | |
|
||
# | A
|
||
# | /
|
||
# 3 {
|
||
# | \
|
||
# | [b4, b5, b6]
|
||
# | |
|
||
# | B
|
||
# | /
|
||
# 4 ´
|
||
# |
|
||
# 5 (newest)
|
||
|
||
event_graph: Dict[str, List[str]] = {
|
||
"1": [],
|
||
"2": ["1"],
|
||
"3": ["2", "A"],
|
||
"4": ["3", "B"],
|
||
"5": ["4"],
|
||
"A": ["b1", "b2", "b3"],
|
||
"b1": ["2"],
|
||
"b2": ["2"],
|
||
"b3": ["2"],
|
||
"B": ["b4", "b5", "b6"],
|
||
"b4": ["3"],
|
||
"b5": ["3"],
|
||
"b6": ["3"],
|
||
}
|
||
|
||
depth_map: Dict[str, int] = {
|
||
"1": 1,
|
||
"2": 2,
|
||
"b1": 3,
|
||
"b2": 3,
|
||
"b3": 3,
|
||
"A": 4,
|
||
"3": 5,
|
||
"b4": 6,
|
||
"b5": 6,
|
||
"b6": 6,
|
||
"B": 7,
|
||
"4": 8,
|
||
"5": 9,
|
||
}
|
||
|
||
# The events we have persisted on our server.
|
||
# The rest are events in the room but not backfilled tet.
|
||
our_server_events = {"5", "4", "B", "3", "A"}
|
||
|
||
complete_event_dict_map: Dict[str, JsonDict] = {}
|
||
stream_ordering = 0
|
||
for event_id, prev_event_ids in event_graph.items():
|
||
depth = depth_map[event_id]
|
||
|
||
complete_event_dict_map[event_id] = {
|
||
"event_id": event_id,
|
||
"type": "test_regular_type",
|
||
"room_id": room_id,
|
||
"sender": "@sender",
|
||
"prev_event_ids": prev_event_ids,
|
||
"auth_event_ids": [],
|
||
"origin_server_ts": stream_ordering,
|
||
"depth": depth,
|
||
"stream_ordering": stream_ordering,
|
||
"content": {"body": "event" + event_id},
|
||
}
|
||
|
||
stream_ordering += 1
|
||
|
||
def populate_db(txn: LoggingTransaction) -> None:
|
||
# Insert the room to satisfy the foreign key constraint of
|
||
# `event_failed_pull_attempts`
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
"rooms",
|
||
{
|
||
"room_id": room_id,
|
||
"creator": "room_creator_user_id",
|
||
"is_public": True,
|
||
"room_version": "6",
|
||
},
|
||
)
|
||
|
||
# Insert our server events
|
||
for event_id in our_server_events:
|
||
event_dict = complete_event_dict_map[event_id]
|
||
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
table="events",
|
||
values={
|
||
"event_id": event_dict.get("event_id"),
|
||
"type": event_dict.get("type"),
|
||
"room_id": event_dict.get("room_id"),
|
||
"depth": event_dict.get("depth"),
|
||
"topological_ordering": event_dict.get("depth"),
|
||
"stream_ordering": event_dict.get("stream_ordering"),
|
||
"processed": True,
|
||
"outlier": False,
|
||
},
|
||
)
|
||
|
||
# Insert the event edges
|
||
for event_id in our_server_events:
|
||
for prev_event_id in event_graph[event_id]:
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
table="event_edges",
|
||
values={
|
||
"event_id": event_id,
|
||
"prev_event_id": prev_event_id,
|
||
"room_id": room_id,
|
||
},
|
||
)
|
||
|
||
# Insert the backward extremities
|
||
prev_events_of_our_events = {
|
||
prev_event_id
|
||
for our_server_event in our_server_events
|
||
for prev_event_id in complete_event_dict_map[our_server_event][
|
||
"prev_event_ids"
|
||
]
|
||
}
|
||
backward_extremities = prev_events_of_our_events - our_server_events
|
||
for backward_extremity in backward_extremities:
|
||
self.store.db_pool.simple_insert_txn(
|
||
txn,
|
||
table="event_backward_extremities",
|
||
values={
|
||
"event_id": backward_extremity,
|
||
"room_id": room_id,
|
||
},
|
||
)
|
||
|
||
self.get_success(
|
||
self.store.db_pool.runInteraction(
|
||
"_setup_room_for_backfill_tests_populate_db",
|
||
populate_db,
|
||
)
|
||
)
|
||
|
||
return _BackfillSetupInfo(room_id=room_id, depth_map=depth_map)
|
||
|
||
def test_get_backfill_points_in_room(self) -> None:
|
||
"""
|
||
Test to make sure only backfill points that are older and come before
|
||
the `current_depth` are returned.
|
||
"""
|
||
setup_info = self._setup_room_for_backfill_tests()
|
||
room_id = setup_info.room_id
|
||
depth_map = setup_info.depth_map
|
||
|
||
# Try at "B"
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["B"], limit=100)
|
||
)
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
self.assertEqual(backfill_event_ids, ["b6", "b5", "b4", "2", "b3", "b2", "b1"])
|
||
|
||
# Try at "A"
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["A"], limit=100)
|
||
)
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
# Event "2" has a depth of 2 but is not included here because we only
|
||
# know the approximate depth of 5 from our event "3".
|
||
self.assertListEqual(backfill_event_ids, ["b3", "b2", "b1"])
|
||
|
||
def test_get_backfill_points_in_room_excludes_events_we_have_attempted(
|
||
self,
|
||
) -> None:
|
||
"""
|
||
Test to make sure that events we have attempted to backfill (and within
|
||
backoff timeout duration) do not show up as an event to backfill again.
|
||
"""
|
||
setup_info = self._setup_room_for_backfill_tests()
|
||
room_id = setup_info.room_id
|
||
depth_map = setup_info.depth_map
|
||
|
||
# Record some attempts to backfill these events which will make
|
||
# `get_backfill_points_in_room` exclude them because we
|
||
# haven't passed the backoff interval.
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b5", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b4", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b3", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b2", "fake cause")
|
||
)
|
||
|
||
# No time has passed since we attempted to backfill ^
|
||
|
||
# Try at "B"
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["B"], limit=100)
|
||
)
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
# Only the backfill points that we didn't record earlier exist here.
|
||
self.assertEqual(backfill_event_ids, ["b6", "2", "b1"])
|
||
|
||
def test_get_backfill_points_in_room_attempted_event_retry_after_backoff_duration(
|
||
self,
|
||
) -> None:
|
||
"""
|
||
Test to make sure after we fake attempt to backfill event "b3" many times,
|
||
we can see retry and see the "b3" again after the backoff timeout duration
|
||
has exceeded.
|
||
"""
|
||
setup_info = self._setup_room_for_backfill_tests()
|
||
room_id = setup_info.room_id
|
||
depth_map = setup_info.depth_map
|
||
|
||
# Record some attempts to backfill these events which will make
|
||
# `get_backfill_points_in_room` exclude them because we
|
||
# haven't passed the backoff interval.
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b3", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b1", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b1", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b1", "fake cause")
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b1", "fake cause")
|
||
)
|
||
|
||
# Now advance time by 2 hours and we should only be able to see "b3"
|
||
# because we have waited long enough for the single attempt (2^1 hours)
|
||
# but we still shouldn't see "b1" because we haven't waited long enough
|
||
# for this many attempts. We didn't do anything to "b2" so it should be
|
||
# visible regardless.
|
||
self.reactor.advance(datetime.timedelta(hours=2).total_seconds())
|
||
|
||
# Try at "A" and make sure that "b1" is not in the list because we've
|
||
# already attempted many times
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["A"], limit=100)
|
||
)
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
self.assertEqual(backfill_event_ids, ["b3", "b2"])
|
||
|
||
# Now advance time by 20 hours (above 2^4 because we made 4 attemps) and
|
||
# see if we can now backfill it
|
||
self.reactor.advance(datetime.timedelta(hours=20).total_seconds())
|
||
|
||
# Try at "A" again after we advanced enough time and we should see "b3" again
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["A"], limit=100)
|
||
)
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
self.assertEqual(backfill_event_ids, ["b3", "b2", "b1"])
|
||
|
||
def test_get_backfill_points_in_room_works_after_many_failed_pull_attempts_that_could_naively_overflow(
|
||
self,
|
||
) -> None:
|
||
"""
|
||
A test that reproduces https://github.com/matrix-org/synapse/issues/13929 (Postgres only).
|
||
|
||
Test to make sure we can still get backfill points after many failed pull
|
||
attempts that cause us to backoff to the limit. Even if the backoff formula
|
||
would tell us to wait for more seconds than can be expressed in a 32 bit
|
||
signed int.
|
||
"""
|
||
setup_info = self._setup_room_for_backfill_tests()
|
||
room_id = setup_info.room_id
|
||
depth_map = setup_info.depth_map
|
||
|
||
# Pretend that we have tried and failed 10 times to backfill event b1.
|
||
for _ in range(10):
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(room_id, "b1", "fake cause")
|
||
)
|
||
|
||
# If the backoff periods grow without limit:
|
||
# After the first failed attempt, we would have backed off for 1 << 1 = 2 hours.
|
||
# After the second failed attempt we would have backed off for 1 << 2 = 4 hours,
|
||
# so after the 10th failed attempt we should backoff for 1 << 10 == 1024 hours.
|
||
# Wait 1100 hours just so we have a nice round number.
|
||
self.reactor.advance(datetime.timedelta(hours=1100).total_seconds())
|
||
|
||
# 1024 hours in milliseconds is 1024 * 3600000, which exceeds the largest 32 bit
|
||
# signed integer. The bug we're reproducing is that this overflow causes an
|
||
# error in postgres preventing us from fetching a set of backwards extremities
|
||
# to retry fetching.
|
||
backfill_points = self.get_success(
|
||
self.store.get_backfill_points_in_room(room_id, depth_map["A"], limit=100)
|
||
)
|
||
|
||
# We should aim to fetch all backoff points: b1's latest backoff period has
|
||
# expired, and we haven't tried the rest.
|
||
backfill_event_ids = [backfill_point[0] for backfill_point in backfill_points]
|
||
self.assertEqual(backfill_event_ids, ["b3", "b2", "b1"])
|
||
|
||
def test_get_event_ids_with_failed_pull_attempts(self) -> None:
|
||
"""
|
||
Test to make sure we properly get event_ids based on whether they have any
|
||
failed pull attempts.
|
||
"""
|
||
# Create the room
|
||
user_id = self.register_user("alice", "test")
|
||
tok = self.login("alice", "test")
|
||
room_id = self.helper.create_room_as(room_creator=user_id, tok=tok)
|
||
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(
|
||
room_id, "$failed_event_id1", "fake cause"
|
||
)
|
||
)
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(
|
||
room_id, "$failed_event_id2", "fake cause"
|
||
)
|
||
)
|
||
|
||
event_ids_with_failed_pull_attempts = self.get_success(
|
||
self.store.get_event_ids_with_failed_pull_attempts(
|
||
event_ids=[
|
||
"$failed_event_id1",
|
||
"$fresh_event_id1",
|
||
"$failed_event_id2",
|
||
"$fresh_event_id2",
|
||
]
|
||
)
|
||
)
|
||
|
||
self.assertEqual(
|
||
event_ids_with_failed_pull_attempts,
|
||
{"$failed_event_id1", "$failed_event_id2"},
|
||
)
|
||
|
||
def test_get_event_ids_to_not_pull_from_backoff(self) -> None:
|
||
"""
|
||
Test to make sure only event IDs we should backoff from are returned.
|
||
"""
|
||
# Create the room
|
||
user_id = self.register_user("alice", "test")
|
||
tok = self.login("alice", "test")
|
||
room_id = self.helper.create_room_as(room_creator=user_id, tok=tok)
|
||
|
||
failure_time = self.clock.time_msec()
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(
|
||
room_id, "$failed_event_id", "fake cause"
|
||
)
|
||
)
|
||
|
||
event_ids_with_backoff = self.get_success(
|
||
self.store.get_event_ids_to_not_pull_from_backoff(
|
||
room_id=room_id, event_ids=["$failed_event_id", "$normal_event_id"]
|
||
)
|
||
)
|
||
|
||
self.assertEqual(
|
||
event_ids_with_backoff,
|
||
# We expect a 2^1 hour backoff after a single failed attempt.
|
||
{"$failed_event_id": failure_time + 2 * 60 * 60 * 1000},
|
||
)
|
||
|
||
def test_get_event_ids_to_not_pull_from_backoff_retry_after_backoff_duration(
|
||
self,
|
||
) -> None:
|
||
"""
|
||
Test to make sure no event IDs are returned after the backoff duration has
|
||
elapsed.
|
||
"""
|
||
# Create the room
|
||
user_id = self.register_user("alice", "test")
|
||
tok = self.login("alice", "test")
|
||
room_id = self.helper.create_room_as(room_creator=user_id, tok=tok)
|
||
|
||
self.get_success(
|
||
self.store.record_event_failed_pull_attempt(
|
||
room_id, "$failed_event_id", "fake cause"
|
||
)
|
||
)
|
||
|
||
# Now advance time by 2 hours so we wait long enough for the single failed
|
||
# attempt (2^1 hours).
|
||
self.reactor.advance(datetime.timedelta(hours=2).total_seconds())
|
||
|
||
event_ids_with_backoff = self.get_success(
|
||
self.store.get_event_ids_to_not_pull_from_backoff(
|
||
room_id=room_id, event_ids=["$failed_event_id", "$normal_event_id"]
|
||
)
|
||
)
|
||
# Since this function only returns events we should backoff from, time has
|
||
# elapsed past the backoff range so there is no events to backoff from.
|
||
self.assertEqual(event_ids_with_backoff, {})
|
||
|
||
|
||
@attr.s(auto_attribs=True)
|
||
class FakeEvent:
|
||
event_id: str
|
||
room_id: str
|
||
auth_events: List[str]
|
||
|
||
type = "foo"
|
||
state_key = "foo"
|
||
|
||
internal_metadata = _EventInternalMetadata({})
|
||
|
||
def auth_event_ids(self) -> List[str]:
|
||
return self.auth_events
|
||
|
||
def is_state(self) -> bool:
|
||
return True
|