770 lines
26 KiB
Python
770 lines
26 KiB
Python
# Copyright 2020 The Matrix.org Foundation C.I.C.
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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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from typing import Dict, List, Set, Tuple, cast
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from twisted.test.proto_helpers import MemoryReactor
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from twisted.trial import unittest
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from synapse.api.constants import EventTypes
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from synapse.api.room_versions import RoomVersions
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from synapse.events import EventBase
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from synapse.events.snapshot import EventContext
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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.databases.main.events import _LinkMap
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from synapse.storage.types import Cursor
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from synapse.types import create_requester
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from synapse.util import Clock
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from tests.unittest import HomeserverTestCase
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class EventChainStoreTestCase(HomeserverTestCase):
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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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self._next_stream_ordering = 1
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def test_simple(self) -> None:
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"""Test that the example in `docs/auth_chain_difference_algorithm.md`
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works.
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"""
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event_factory = self.hs.get_event_builder_factory()
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bob = "@creator:test"
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alice = "@alice:test"
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room_id = "!room:test"
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# Ensure that we have a rooms entry so that we generate the chain index.
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self.get_success(
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self.store.store_room(
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room_id=room_id,
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room_creator_user_id="",
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is_public=True,
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room_version=RoomVersions.V6,
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)
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)
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create = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Create,
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"state_key": "",
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "create"},
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},
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).build(prev_event_ids=[], auth_event_ids=[])
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)
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bob_join = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": bob,
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "bob_join"},
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},
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).build(prev_event_ids=[], auth_event_ids=[create.event_id])
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)
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power = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.PowerLevels,
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"state_key": "",
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "power"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id],
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)
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)
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alice_invite = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "alice_invite"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id, power.event_id],
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)
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)
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alice_join = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": alice,
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"room_id": room_id,
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"content": {"tag": "alice_join"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, alice_invite.event_id, power.event_id],
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)
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)
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power_2 = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.PowerLevels,
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"state_key": "",
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "power_2"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id, power.event_id],
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)
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)
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bob_join_2 = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": bob,
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "bob_join_2"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id, power.event_id],
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)
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)
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alice_join2 = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": alice,
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"room_id": room_id,
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"content": {"tag": "alice_join2"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[
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create.event_id,
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alice_join.event_id,
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power_2.event_id,
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],
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)
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)
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events = [
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create,
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bob_join,
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power,
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alice_invite,
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alice_join,
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bob_join_2,
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power_2,
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alice_join2,
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]
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expected_links = [
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(bob_join, create),
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(power, create),
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(power, bob_join),
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(alice_invite, create),
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(alice_invite, power),
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(alice_invite, bob_join),
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(bob_join_2, power),
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(alice_join2, power_2),
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]
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self.persist(events)
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chain_map, link_map = self.fetch_chains(events)
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# Check that the expected links and only the expected links have been
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# added.
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self.assertEqual(len(expected_links), len(list(link_map.get_additions())))
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for start, end in expected_links:
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start_id, start_seq = chain_map[start.event_id]
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end_id, end_seq = chain_map[end.event_id]
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self.assertIn(
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(start_seq, end_seq), list(link_map.get_links_between(start_id, end_id))
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)
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# Test that everything can reach the create event, but the create event
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# can't reach anything.
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for event in events[1:]:
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self.assertTrue(
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link_map.exists_path_from(
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chain_map[event.event_id], chain_map[create.event_id]
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),
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)
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self.assertFalse(
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link_map.exists_path_from(
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chain_map[create.event_id],
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chain_map[event.event_id],
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),
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)
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def test_out_of_order_events(self) -> None:
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"""Test that we handle persisting events that we don't have the full
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auth chain for yet (which should only happen for out of band memberships).
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"""
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event_factory = self.hs.get_event_builder_factory()
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bob = "@creator:test"
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alice = "@alice:test"
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room_id = "!room:test"
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# Ensure that we have a rooms entry so that we generate the chain index.
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self.get_success(
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self.store.store_room(
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room_id=room_id,
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room_creator_user_id="",
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is_public=True,
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room_version=RoomVersions.V6,
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)
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)
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# First persist the base room.
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create = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Create,
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"state_key": "",
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "create"},
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},
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).build(prev_event_ids=[], auth_event_ids=[])
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)
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bob_join = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": bob,
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "bob_join"},
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},
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).build(prev_event_ids=[], auth_event_ids=[create.event_id])
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)
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power = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.PowerLevels,
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"state_key": "",
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "power"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id],
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)
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)
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self.persist([create, bob_join, power])
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# Now persist an invite and a couple of memberships out of order.
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alice_invite = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": bob,
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"room_id": room_id,
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"content": {"tag": "alice_invite"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, bob_join.event_id, power.event_id],
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)
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)
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alice_join = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": alice,
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"room_id": room_id,
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"content": {"tag": "alice_join"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, alice_invite.event_id, power.event_id],
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)
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)
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alice_join2 = self.get_success(
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event_factory.for_room_version(
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RoomVersions.V6,
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{
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"type": EventTypes.Member,
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"state_key": alice,
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"sender": alice,
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"room_id": room_id,
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"content": {"tag": "alice_join2"},
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},
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).build(
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prev_event_ids=[],
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auth_event_ids=[create.event_id, alice_join.event_id, power.event_id],
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)
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)
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self.persist([alice_join])
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self.persist([alice_join2])
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self.persist([alice_invite])
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# The end result should be sane.
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events = [create, bob_join, power, alice_invite, alice_join]
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chain_map, link_map = self.fetch_chains(events)
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expected_links = [
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(bob_join, create),
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(power, create),
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(power, bob_join),
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(alice_invite, create),
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(alice_invite, power),
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(alice_invite, bob_join),
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]
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# Check that the expected links and only the expected links have been
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# added.
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self.assertEqual(len(expected_links), len(list(link_map.get_additions())))
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for start, end in expected_links:
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start_id, start_seq = chain_map[start.event_id]
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end_id, end_seq = chain_map[end.event_id]
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self.assertIn(
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(start_seq, end_seq), list(link_map.get_links_between(start_id, end_id))
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)
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def persist(
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self,
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events: List[EventBase],
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) -> None:
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"""Persist the given events and check that the links generated match
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those given.
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"""
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persist_events_store = self.hs.get_datastores().persist_events
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assert persist_events_store is not None
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for e in events:
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e.internal_metadata.stream_ordering = self._next_stream_ordering
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self._next_stream_ordering += 1
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def _persist(txn: LoggingTransaction) -> None:
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# We need to persist the events to the events and state_events
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# tables.
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assert persist_events_store is not None
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persist_events_store._store_event_txn(
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txn,
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[
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(e, EventContext(self.hs.get_storage_controllers(), {}))
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for e in events
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],
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)
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# Actually call the function that calculates the auth chain stuff.
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persist_events_store._persist_event_auth_chain_txn(txn, events)
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self.get_success(
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persist_events_store.db_pool.runInteraction(
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"_persist",
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_persist,
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)
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)
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def fetch_chains(
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self, events: List[EventBase]
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) -> Tuple[Dict[str, Tuple[int, int]], _LinkMap]:
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# Fetch the map from event ID -> (chain ID, sequence number)
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rows = cast(
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List[Tuple[str, int, int]],
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self.get_success(
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self.store.db_pool.simple_select_many_batch(
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table="event_auth_chains",
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column="event_id",
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iterable=[e.event_id for e in events],
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retcols=("event_id", "chain_id", "sequence_number"),
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keyvalues={},
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)
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),
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)
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chain_map = {
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event_id: (chain_id, sequence_number)
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for event_id, chain_id, sequence_number in rows
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}
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# Fetch all the links and pass them to the _LinkMap.
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auth_chain_rows = cast(
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List[Tuple[int, int, int, int]],
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self.get_success(
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self.store.db_pool.simple_select_many_batch(
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table="event_auth_chain_links",
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column="origin_chain_id",
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iterable=[chain_id for chain_id, _ in chain_map.values()],
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retcols=(
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"origin_chain_id",
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"origin_sequence_number",
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"target_chain_id",
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"target_sequence_number",
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),
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keyvalues={},
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)
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),
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)
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link_map = _LinkMap()
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for (
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origin_chain_id,
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origin_sequence_number,
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target_chain_id,
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target_sequence_number,
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) in auth_chain_rows:
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added = link_map.add_link(
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(origin_chain_id, origin_sequence_number),
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(target_chain_id, target_sequence_number),
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)
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# We shouldn't have persisted any redundant links
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self.assertTrue(added)
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return chain_map, link_map
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class LinkMapTestCase(unittest.TestCase):
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def test_simple(self) -> None:
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"""Basic tests for the LinkMap."""
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link_map = _LinkMap()
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link_map.add_link((1, 1), (2, 1), new=False)
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self.assertCountEqual(link_map.get_links_between(1, 2), [(1, 1)])
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self.assertCountEqual(link_map.get_links_from((1, 1)), [(2, 1)])
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self.assertCountEqual(link_map.get_additions(), [])
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self.assertTrue(link_map.exists_path_from((1, 5), (2, 1)))
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self.assertFalse(link_map.exists_path_from((1, 5), (2, 2)))
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self.assertTrue(link_map.exists_path_from((1, 5), (1, 1)))
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self.assertFalse(link_map.exists_path_from((1, 1), (1, 5)))
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# Attempting to add a redundant link is ignored.
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self.assertFalse(link_map.add_link((1, 4), (2, 1)))
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self.assertCountEqual(link_map.get_links_between(1, 2), [(1, 1)])
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# Adding new non-redundant links works
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self.assertTrue(link_map.add_link((1, 3), (2, 3)))
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self.assertCountEqual(link_map.get_links_between(1, 2), [(1, 1), (3, 3)])
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self.assertTrue(link_map.add_link((2, 5), (1, 3)))
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self.assertCountEqual(link_map.get_links_between(2, 1), [(5, 3)])
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self.assertCountEqual(link_map.get_links_between(1, 2), [(1, 1), (3, 3)])
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self.assertCountEqual(link_map.get_additions(), [(1, 3, 2, 3), (2, 5, 1, 3)])
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class EventChainBackgroundUpdateTestCase(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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self.user_id = self.register_user("foo", "pass")
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self.token = self.login("foo", "pass")
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self.requester = create_requester(self.user_id)
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def _generate_room(self) -> Tuple[str, List[Set[str]]]:
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"""Insert a room without a chain cover index."""
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room_id = self.helper.create_room_as(self.user_id, tok=self.token)
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# Mark the room as not having a chain cover index
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self.get_success(
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self.store.db_pool.simple_update(
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table="rooms",
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keyvalues={"room_id": room_id},
|
|
updatevalues={"has_auth_chain_index": False},
|
|
desc="test",
|
|
)
|
|
)
|
|
|
|
# Create a fork in the DAG with different events.
|
|
event_handler = self.hs.get_event_creation_handler()
|
|
latest_event_ids = self.get_success(
|
|
self.store.get_prev_events_for_room(room_id)
|
|
)
|
|
event, unpersisted_context = self.get_success(
|
|
event_handler.create_event(
|
|
self.requester,
|
|
{
|
|
"type": "some_state_type",
|
|
"state_key": "",
|
|
"content": {},
|
|
"room_id": room_id,
|
|
"sender": self.user_id,
|
|
},
|
|
prev_event_ids=latest_event_ids,
|
|
)
|
|
)
|
|
context = self.get_success(unpersisted_context.persist(event))
|
|
self.get_success(
|
|
event_handler.handle_new_client_event(
|
|
self.requester, events_and_context=[(event, context)]
|
|
)
|
|
)
|
|
state_ids1 = self.get_success(context.get_current_state_ids())
|
|
assert state_ids1 is not None
|
|
state1 = set(state_ids1.values())
|
|
|
|
event, unpersisted_context = self.get_success(
|
|
event_handler.create_event(
|
|
self.requester,
|
|
{
|
|
"type": "some_state_type",
|
|
"state_key": "",
|
|
"content": {},
|
|
"room_id": room_id,
|
|
"sender": self.user_id,
|
|
},
|
|
prev_event_ids=latest_event_ids,
|
|
)
|
|
)
|
|
context = self.get_success(unpersisted_context.persist(event))
|
|
self.get_success(
|
|
event_handler.handle_new_client_event(
|
|
self.requester, events_and_context=[(event, context)]
|
|
)
|
|
)
|
|
state_ids2 = self.get_success(context.get_current_state_ids())
|
|
assert state_ids2 is not None
|
|
state2 = set(state_ids2.values())
|
|
|
|
# Delete the chain cover info.
|
|
|
|
def _delete_tables(txn: Cursor) -> None:
|
|
txn.execute("DELETE FROM event_auth_chains")
|
|
txn.execute("DELETE FROM event_auth_chain_links")
|
|
|
|
self.get_success(self.store.db_pool.runInteraction("test", _delete_tables))
|
|
|
|
return room_id, [state1, state2]
|
|
|
|
def test_background_update_single_room(self) -> None:
|
|
"""Test that the background update to calculate auth chains for historic
|
|
rooms works correctly.
|
|
"""
|
|
|
|
# Create a room
|
|
room_id, states = self._generate_room()
|
|
|
|
# Insert and run the background update.
|
|
self.get_success(
|
|
self.store.db_pool.simple_insert(
|
|
"background_updates",
|
|
{"update_name": "chain_cover", "progress_json": "{}"},
|
|
)
|
|
)
|
|
|
|
# Ugh, have to reset this flag
|
|
self.store.db_pool.updates._all_done = False
|
|
|
|
self.wait_for_background_updates()
|
|
|
|
# Test that the `has_auth_chain_index` has been set
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id)))
|
|
|
|
# Test that calculating the auth chain difference using the newly
|
|
# calculated chain cover works.
|
|
self.get_success(
|
|
self.store.db_pool.runInteraction(
|
|
"test",
|
|
self.store._get_auth_chain_difference_using_cover_index_txn,
|
|
room_id,
|
|
states,
|
|
)
|
|
)
|
|
|
|
def test_background_update_multiple_rooms(self) -> None:
|
|
"""Test that the background update to calculate auth chains for historic
|
|
rooms works correctly.
|
|
"""
|
|
# Create a room
|
|
room_id1, states1 = self._generate_room()
|
|
room_id2, states2 = self._generate_room()
|
|
room_id3, states2 = self._generate_room()
|
|
|
|
# Insert and run the background update.
|
|
self.get_success(
|
|
self.store.db_pool.simple_insert(
|
|
"background_updates",
|
|
{"update_name": "chain_cover", "progress_json": "{}"},
|
|
)
|
|
)
|
|
|
|
# Ugh, have to reset this flag
|
|
self.store.db_pool.updates._all_done = False
|
|
|
|
self.wait_for_background_updates()
|
|
|
|
# Test that the `has_auth_chain_index` has been set
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id1)))
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id2)))
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id3)))
|
|
|
|
# Test that calculating the auth chain difference using the newly
|
|
# calculated chain cover works.
|
|
self.get_success(
|
|
self.store.db_pool.runInteraction(
|
|
"test",
|
|
self.store._get_auth_chain_difference_using_cover_index_txn,
|
|
room_id1,
|
|
states1,
|
|
)
|
|
)
|
|
|
|
def test_background_update_single_large_room(self) -> None:
|
|
"""Test that the background update to calculate auth chains for historic
|
|
rooms works correctly.
|
|
"""
|
|
|
|
# Create a room
|
|
room_id, states = self._generate_room()
|
|
|
|
# Add a bunch of state so that it takes multiple iterations of the
|
|
# background update to process the room.
|
|
for i in range(150):
|
|
self.helper.send_state(
|
|
room_id, event_type="m.test", body={"index": i}, tok=self.token
|
|
)
|
|
|
|
# Insert and run the background update.
|
|
self.get_success(
|
|
self.store.db_pool.simple_insert(
|
|
"background_updates",
|
|
{"update_name": "chain_cover", "progress_json": "{}"},
|
|
)
|
|
)
|
|
|
|
# Ugh, have to reset this flag
|
|
self.store.db_pool.updates._all_done = False
|
|
|
|
iterations = 0
|
|
while not self.get_success(
|
|
self.store.db_pool.updates.has_completed_background_updates()
|
|
):
|
|
iterations += 1
|
|
self.get_success(
|
|
self.store.db_pool.updates.do_next_background_update(False), by=0.1
|
|
)
|
|
|
|
# Ensure that we did actually take multiple iterations to process the
|
|
# room.
|
|
self.assertGreater(iterations, 1)
|
|
|
|
# Test that the `has_auth_chain_index` has been set
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id)))
|
|
|
|
# Test that calculating the auth chain difference using the newly
|
|
# calculated chain cover works.
|
|
self.get_success(
|
|
self.store.db_pool.runInteraction(
|
|
"test",
|
|
self.store._get_auth_chain_difference_using_cover_index_txn,
|
|
room_id,
|
|
states,
|
|
)
|
|
)
|
|
|
|
def test_background_update_multiple_large_room(self) -> None:
|
|
"""Test that the background update to calculate auth chains for historic
|
|
rooms works correctly.
|
|
"""
|
|
|
|
# Create the rooms
|
|
room_id1, _ = self._generate_room()
|
|
room_id2, _ = self._generate_room()
|
|
|
|
# Add a bunch of state so that it takes multiple iterations of the
|
|
# background update to process the room.
|
|
for i in range(150):
|
|
self.helper.send_state(
|
|
room_id1, event_type="m.test", body={"index": i}, tok=self.token
|
|
)
|
|
|
|
for i in range(150):
|
|
self.helper.send_state(
|
|
room_id2, event_type="m.test", body={"index": i}, tok=self.token
|
|
)
|
|
|
|
# Insert and run the background update.
|
|
self.get_success(
|
|
self.store.db_pool.simple_insert(
|
|
"background_updates",
|
|
{"update_name": "chain_cover", "progress_json": "{}"},
|
|
)
|
|
)
|
|
|
|
# Ugh, have to reset this flag
|
|
self.store.db_pool.updates._all_done = False
|
|
|
|
iterations = 0
|
|
while not self.get_success(
|
|
self.store.db_pool.updates.has_completed_background_updates()
|
|
):
|
|
iterations += 1
|
|
self.get_success(
|
|
self.store.db_pool.updates.do_next_background_update(False), by=0.1
|
|
)
|
|
|
|
# Ensure that we did actually take multiple iterations to process the
|
|
# room.
|
|
self.assertGreater(iterations, 1)
|
|
|
|
# Test that the `has_auth_chain_index` has been set
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id1)))
|
|
self.assertTrue(self.get_success(self.store.has_auth_chain_index(room_id2)))
|