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485 lines
18 KiB
Python
485 lines
18 KiB
Python
# Copyright 2019 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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from typing import List, Optional
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from synapse.api.constants import EventTypes, Membership
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from synapse.events import EventBase
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from synapse.replication.tcp.commands import RdataCommand
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from synapse.replication.tcp.streams._base import _STREAM_UPDATE_TARGET_ROW_COUNT
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from synapse.replication.tcp.streams.events import (
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EventsStreamCurrentStateRow,
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EventsStreamEventRow,
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EventsStreamRow,
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)
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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 tests.replication._base import BaseStreamTestCase
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from tests.test_utils.event_injection import inject_event, inject_member_event
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class EventsStreamTestCase(BaseStreamTestCase):
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servlets = [
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admin.register_servlets,
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login.register_servlets,
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room.register_servlets,
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]
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def prepare(self, reactor, clock, hs):
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super().prepare(reactor, clock, hs)
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self.user_id = self.register_user("u1", "pass")
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self.user_tok = self.login("u1", "pass")
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self.reconnect()
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self.room_id = self.helper.create_room_as(tok=self.user_tok)
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self.test_handler.received_rdata_rows.clear()
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def test_update_function_event_row_limit(self):
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"""Test replication with many non-state events
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Checks that all events are correctly replicated when there are lots of
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event rows to be replicated.
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"""
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# disconnect, so that we can stack up some changes
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self.disconnect()
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# generate lots of non-state events. We inject them using inject_event
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# so that they are not send out over replication until we call self.replicate().
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events = [
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self._inject_test_event()
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for _ in range(_STREAM_UPDATE_TARGET_ROW_COUNT + 1)
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]
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# also one state event
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state_event = self._inject_state_event()
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# check we're testing what we think we are: no rows should yet have been
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# received
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self.assertEqual([], self.test_handler.received_rdata_rows)
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# now reconnect to pull the updates
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self.reconnect()
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self.replicate()
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# we should have received all the expected rows in the right order (as
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# well as various cache invalidation updates which we ignore)
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received_rows = [
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row for row in self.test_handler.received_rdata_rows if row[0] == "events"
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]
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for event in events:
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, event.event_id)
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stream_name, token, row = received_rows.pop(0)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, state_event.event_id)
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "state")
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self.assertIsInstance(row.data, EventsStreamCurrentStateRow)
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self.assertEqual(row.data.event_id, state_event.event_id)
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self.assertEqual([], received_rows)
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def test_update_function_huge_state_change(self):
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"""Test replication with many state events
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Ensures that all events are correctly replicated when there are lots of
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state change rows to be replicated.
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"""
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# we want to generate lots of state changes at a single stream ID.
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#
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# We do this by having two branches in the DAG. On one, we have a moderator
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# which that generates lots of state; on the other, we de-op the moderator,
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# thus invalidating all the state.
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OTHER_USER = "@other_user:localhost"
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# have the user join
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self.get_success(
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inject_member_event(self.hs, self.room_id, OTHER_USER, Membership.JOIN)
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)
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# Update existing power levels with mod at PL50
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pls = self.helper.get_state(
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self.room_id, EventTypes.PowerLevels, tok=self.user_tok
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)
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pls["users"][OTHER_USER] = 50
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self.helper.send_state(
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self.room_id,
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EventTypes.PowerLevels,
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pls,
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tok=self.user_tok,
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)
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# this is the point in the DAG where we make a fork
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fork_point: List[str] = self.get_success(
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self.hs.get_datastore().get_latest_event_ids_in_room(self.room_id)
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)
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events = [
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self._inject_state_event(sender=OTHER_USER)
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for _ in range(_STREAM_UPDATE_TARGET_ROW_COUNT)
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]
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self.replicate()
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# all those events and state changes should have landed
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self.assertGreaterEqual(
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len(self.test_handler.received_rdata_rows), 2 * len(events)
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)
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# disconnect, so that we can stack up the changes
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self.disconnect()
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self.test_handler.received_rdata_rows.clear()
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# a state event which doesn't get rolled back, to check that the state
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# before the huge update comes through ok
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state1 = self._inject_state_event()
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# roll back all the state by de-modding the user
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prev_events = fork_point
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pls["users"][OTHER_USER] = 0
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pl_event = self.get_success(
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inject_event(
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self.hs,
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prev_event_ids=prev_events,
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type=EventTypes.PowerLevels,
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state_key="",
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sender=self.user_id,
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room_id=self.room_id,
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content=pls,
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)
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)
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# one more bit of state that doesn't get rolled back
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state2 = self._inject_state_event()
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# check we're testing what we think we are: no rows should yet have been
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# received
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self.assertEqual([], self.test_handler.received_rdata_rows)
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# now reconnect to pull the updates
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self.reconnect()
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self.replicate()
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# we should have received all the expected rows in the right order (as
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# well as various cache invalidation updates which we ignore)
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#
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# we expect:
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#
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# - two rows for state1
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# - the PL event row, plus state rows for the PL event and each
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# of the states that got reverted.
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# - two rows for state2
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received_rows = [
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row for row in self.test_handler.received_rdata_rows if row[0] == "events"
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]
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# first check the first two rows, which should be state1
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, state1.event_id)
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stream_name, token, row = received_rows.pop(0)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "state")
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self.assertIsInstance(row.data, EventsStreamCurrentStateRow)
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self.assertEqual(row.data.event_id, state1.event_id)
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# now the last two rows, which should be state2
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stream_name, token, row = received_rows.pop(-2)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, state2.event_id)
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stream_name, token, row = received_rows.pop(-1)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "state")
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self.assertIsInstance(row.data, EventsStreamCurrentStateRow)
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self.assertEqual(row.data.event_id, state2.event_id)
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# that should leave us with the rows for the PL event
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self.assertEqual(len(received_rows), len(events) + 2)
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, pl_event.event_id)
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# the state rows are unsorted
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state_rows: List[EventsStreamCurrentStateRow] = []
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for stream_name, _, row in received_rows:
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "state")
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self.assertIsInstance(row.data, EventsStreamCurrentStateRow)
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state_rows.append(row.data)
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state_rows.sort(key=lambda r: r.state_key)
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sr = state_rows.pop(0)
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self.assertEqual(sr.type, EventTypes.PowerLevels)
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self.assertEqual(sr.event_id, pl_event.event_id)
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for sr in state_rows:
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self.assertEqual(sr.type, "test_state_event")
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# "None" indicates the state has been deleted
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self.assertIsNone(sr.event_id)
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def test_update_function_state_row_limit(self):
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"""Test replication with many state events over several stream ids."""
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# we want to generate lots of state changes, but for this test, we want to
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# spread out the state changes over a few stream IDs.
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#
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# We do this by having two branches in the DAG. On one, we have four moderators,
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# each of which that generates lots of state; on the other, we de-op the users,
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# thus invalidating all the state.
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NUM_USERS = 4
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STATES_PER_USER = _STREAM_UPDATE_TARGET_ROW_COUNT // 4 + 1
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user_ids = ["@user%i:localhost" % (i,) for i in range(NUM_USERS)]
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# have the users join
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for u in user_ids:
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self.get_success(
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inject_member_event(self.hs, self.room_id, u, Membership.JOIN)
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)
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# Update existing power levels with mod at PL50
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pls = self.helper.get_state(
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self.room_id, EventTypes.PowerLevels, tok=self.user_tok
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)
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pls["users"].update({u: 50 for u in user_ids})
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self.helper.send_state(
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self.room_id,
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EventTypes.PowerLevels,
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pls,
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tok=self.user_tok,
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)
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# this is the point in the DAG where we make a fork
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fork_point: List[str] = self.get_success(
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self.hs.get_datastore().get_latest_event_ids_in_room(self.room_id)
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)
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events: List[EventBase] = []
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for user in user_ids:
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events.extend(
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self._inject_state_event(sender=user) for _ in range(STATES_PER_USER)
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)
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self.replicate()
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# all those events and state changes should have landed
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self.assertGreaterEqual(
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len(self.test_handler.received_rdata_rows), 2 * len(events)
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)
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# disconnect, so that we can stack up the changes
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self.disconnect()
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self.test_handler.received_rdata_rows.clear()
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# now roll back all that state by de-modding the users
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prev_events = fork_point
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pl_events = []
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for u in user_ids:
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pls["users"][u] = 0
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e = self.get_success(
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inject_event(
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self.hs,
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prev_event_ids=prev_events,
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type=EventTypes.PowerLevels,
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state_key="",
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sender=self.user_id,
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room_id=self.room_id,
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content=pls,
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)
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)
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prev_events = [e.event_id]
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pl_events.append(e)
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# check we're testing what we think we are: no rows should yet have been
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# received
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self.assertEqual([], self.test_handler.received_rdata_rows)
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# now reconnect to pull the updates
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self.reconnect()
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self.replicate()
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# we should have received all the expected rows in the right order (as
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# well as various cache invalidation updates which we ignore)
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received_rows = [
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row for row in self.test_handler.received_rdata_rows if row[0] == "events"
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]
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self.assertGreaterEqual(len(received_rows), len(events))
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for i in range(NUM_USERS):
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# for each user, we expect the PL event row, followed by state rows for
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# the PL event and each of the states that got reverted.
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, pl_events[i].event_id)
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# the state rows are unsorted
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state_rows: List[EventsStreamCurrentStateRow] = []
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for _ in range(STATES_PER_USER + 1):
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stream_name, token, row = received_rows.pop(0)
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "state")
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self.assertIsInstance(row.data, EventsStreamCurrentStateRow)
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state_rows.append(row.data)
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state_rows.sort(key=lambda r: r.state_key)
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sr = state_rows.pop(0)
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self.assertEqual(sr.type, EventTypes.PowerLevels)
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self.assertEqual(sr.event_id, pl_events[i].event_id)
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for sr in state_rows:
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self.assertEqual(sr.type, "test_state_event")
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# "None" indicates the state has been deleted
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self.assertIsNone(sr.event_id)
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self.assertEqual([], received_rows)
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def test_backwards_stream_id(self):
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"""
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Test that RDATA that comes after the current position should be discarded.
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"""
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# disconnect, so that we can stack up some changes
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self.disconnect()
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# Generate an events. We inject them using inject_event so that they are
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# not send out over replication until we call self.replicate().
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event = self._inject_test_event()
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# check we're testing what we think we are: no rows should yet have been
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# received
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self.assertEqual([], self.test_handler.received_rdata_rows)
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# now reconnect to pull the updates
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self.reconnect()
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self.replicate()
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# We should have received the expected single row (as well as various
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# cache invalidation updates which we ignore).
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received_rows = [
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row for row in self.test_handler.received_rdata_rows if row[0] == "events"
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]
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# There should be a single received row.
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self.assertEqual(len(received_rows), 1)
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stream_name, token, row = received_rows[0]
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self.assertEqual("events", stream_name)
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self.assertIsInstance(row, EventsStreamRow)
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self.assertEqual(row.type, "ev")
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self.assertIsInstance(row.data, EventsStreamEventRow)
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self.assertEqual(row.data.event_id, event.event_id)
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# Reset the data.
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self.test_handler.received_rdata_rows = []
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# Save the current token for later.
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worker_events_stream = self.worker_hs.get_replication_streams()["events"]
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prev_token = worker_events_stream.current_token("master")
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# Manually send an old RDATA command, which should get dropped. This
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# re-uses the row from above, but with an earlier stream token.
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self.hs.get_tcp_replication().send_command(
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RdataCommand("events", "master", 1, row)
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)
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# No updates have been received (because it was discard as old).
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received_rows = [
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row for row in self.test_handler.received_rdata_rows if row[0] == "events"
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]
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self.assertEqual(len(received_rows), 0)
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# Ensure the stream has not gone backwards.
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current_token = worker_events_stream.current_token("master")
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self.assertGreaterEqual(current_token, prev_token)
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event_count = 0
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def _inject_test_event(
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self, body: Optional[str] = None, sender: Optional[str] = None, **kwargs
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) -> EventBase:
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if sender is None:
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sender = self.user_id
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if body is None:
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body = "event %i" % (self.event_count,)
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self.event_count += 1
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return self.get_success(
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inject_event(
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self.hs,
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room_id=self.room_id,
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sender=sender,
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type="test_event",
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content={"body": body},
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**kwargs,
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)
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)
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def _inject_state_event(
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self,
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body: Optional[str] = None,
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state_key: Optional[str] = None,
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sender: Optional[str] = None,
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) -> EventBase:
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if sender is None:
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sender = self.user_id
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if state_key is None:
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state_key = "state_%i" % (self.event_count,)
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self.event_count += 1
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if body is None:
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body = "state event %s" % (state_key,)
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return self.get_success(
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inject_event(
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self.hs,
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room_id=self.room_id,
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sender=sender,
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type="test_state_event",
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state_key=state_key,
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content={"body": body},
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)
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)
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