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7941372ec8
The idea is that in future tokens will encode a mapping of instance to position. However, we don't want to include the full instance name in the string representation, so instead we'll have a mapping between instance name and an immutable integer ID in the DB that we can use instead. We'll then do the lookup when we serialize/deserialize the token (we could alternatively pass around an `Instance` type that includes both the name and ID, but that turns out to be a lot more invasive).
95 lines
3.6 KiB
Python
95 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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# 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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from twisted.internet import defer
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from synapse.api.errors import NotFoundError
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from synapse.rest.client.v1 import room
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from tests.unittest import HomeserverTestCase
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class PurgeTests(HomeserverTestCase):
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user_id = "@red:server"
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servlets = [room.register_servlets]
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def make_homeserver(self, reactor, clock):
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hs = self.setup_test_homeserver("server", http_client=None)
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return hs
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def prepare(self, reactor, clock, hs):
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self.room_id = self.helper.create_room_as(self.user_id)
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def test_purge(self):
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"""
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Purging a room will delete everything before the topological point.
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"""
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# Send four messages to the room
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first = self.helper.send(self.room_id, body="test1")
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second = self.helper.send(self.room_id, body="test2")
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third = self.helper.send(self.room_id, body="test3")
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last = self.helper.send(self.room_id, body="test4")
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store = self.hs.get_datastore()
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storage = self.hs.get_storage()
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# Get the topological token
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token = self.get_success(
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store.get_topological_token_for_event(last["event_id"])
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)
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token_str = self.get_success(token.to_string(self.hs.get_datastore()))
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# Purge everything before this topological token
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self.get_success(
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storage.purge_events.purge_history(self.room_id, token_str, True)
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)
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# 1-3 should fail and last will succeed, meaning that 1-3 are deleted
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# and last is not.
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self.get_failure(store.get_event(first["event_id"]), NotFoundError)
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self.get_failure(store.get_event(second["event_id"]), NotFoundError)
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self.get_failure(store.get_event(third["event_id"]), NotFoundError)
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self.get_success(store.get_event(last["event_id"]))
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def test_purge_wont_delete_extrems(self):
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"""
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Purging a room will delete everything before the topological point.
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"""
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# Send four messages to the room
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first = self.helper.send(self.room_id, body="test1")
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second = self.helper.send(self.room_id, body="test2")
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third = self.helper.send(self.room_id, body="test3")
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last = self.helper.send(self.room_id, body="test4")
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storage = self.hs.get_datastore()
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# Set the topological token higher than it should be
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token = self.get_success(
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storage.get_topological_token_for_event(last["event_id"])
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)
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event = "t{}-{}".format(token.topological + 1, token.stream + 1)
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# Purge everything before this topological token
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purge = defer.ensureDeferred(storage.purge_history(self.room_id, event, True))
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self.pump()
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f = self.failureResultOf(purge)
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self.assertIn("greater than forward", f.value.args[0])
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# Try and get the events
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self.get_success(storage.get_event(first["event_id"]))
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self.get_success(storage.get_event(second["event_id"]))
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self.get_success(storage.get_event(third["event_id"]))
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self.get_success(storage.get_event(last["event_id"]))
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