diff options
Diffstat (limited to '')
| -rw-r--r-- | tests/handlers/test_sync.py | 73 | ||||
| -rw-r--r-- | tests/rest/client/test_sync.py | 4 |
2 files changed, 75 insertions, 2 deletions
diff --git a/tests/handlers/test_sync.py b/tests/handlers/test_sync.py index 02371ce724..5319928c28 100644 --- a/tests/handlers/test_sync.py +++ b/tests/handlers/test_sync.py @@ -22,6 +22,7 @@ from unittest.mock import AsyncMock, Mock, patch from parameterized import parameterized +from twisted.internet import defer from twisted.test.proto_helpers import MemoryReactor from synapse.api.constants import AccountDataTypes, EventTypes, JoinRules @@ -35,7 +36,7 @@ from synapse.handlers.sync import SyncConfig, SyncRequestKey, SyncResult, SyncVe from synapse.rest import admin from synapse.rest.client import knock, login, room from synapse.server import HomeServer -from synapse.types import JsonDict, UserID, create_requester +from synapse.types import JsonDict, StreamKeyType, UserID, create_requester from synapse.util import Clock import tests.unittest @@ -959,6 +960,76 @@ class SyncTestCase(tests.unittest.HomeserverTestCase): self.fail("No push rules found") + def test_wait_for_future_sync_token(self) -> None: + """Test that if we receive a token that is ahead of our current token, + we'll wait until the stream position advances. + + This can happen if replication streams start lagging, and the client's + previous sync request was serviced by a worker ahead of ours. + """ + user = self.register_user("alice", "password") + + # We simulate a lagging stream by getting a stream ID from the ID gen + # and then waiting to mark it as "persisted". + presence_id_gen = self.store.get_presence_stream_id_gen() + ctx_mgr = presence_id_gen.get_next() + stream_id = self.get_success(ctx_mgr.__aenter__()) + + # Create the new token based on the stream ID above. + current_token = self.hs.get_event_sources().get_current_token() + since_token = current_token.copy_and_advance(StreamKeyType.PRESENCE, stream_id) + + sync_d = defer.ensureDeferred( + self.sync_handler.wait_for_sync_for_user( + create_requester(user), + generate_sync_config(user), + sync_version=SyncVersion.SYNC_V2, + request_key=generate_request_key(), + since_token=since_token, + timeout=0, + ) + ) + + # This should block waiting for the presence stream to update + self.pump() + self.assertFalse(sync_d.called) + + # Marking the stream ID as persisted should unblock the request. + self.get_success(ctx_mgr.__aexit__(None, None, None)) + + self.get_success(sync_d, by=1.0) + + def test_wait_for_invalid_future_sync_token(self) -> None: + """Like the previous test, except we give a token that has a stream + position ahead of what is in the DB, i.e. its invalid and we shouldn't + wait for the stream to advance (as it may never do so). + + This can happen due to older versions of Synapse giving out stream + positions without persisting them in the DB, and so on restart the + stream would get reset back to an older position. + """ + user = self.register_user("alice", "password") + + # Create a token and arbitrarily advance one of the streams. + current_token = self.hs.get_event_sources().get_current_token() + since_token = current_token.copy_and_advance( + StreamKeyType.PRESENCE, current_token.presence_key + 1 + ) + + sync_d = defer.ensureDeferred( + self.sync_handler.wait_for_sync_for_user( + create_requester(user), + generate_sync_config(user), + sync_version=SyncVersion.SYNC_V2, + request_key=generate_request_key(), + since_token=since_token, + timeout=0, + ) + ) + + # We should return without waiting for the presence stream to advance. + self.get_success(sync_d) + def generate_sync_config( user_id: str, diff --git a/tests/rest/client/test_sync.py b/tests/rest/client/test_sync.py index bfb26139d3..12c11f342c 100644 --- a/tests/rest/client/test_sync.py +++ b/tests/rest/client/test_sync.py @@ -1386,10 +1386,12 @@ class SlidingSyncTestCase(unittest.HomeserverTestCase): # Create a future token that will cause us to wait. Since we never send a new # event to reach that future stream_ordering, the worker will wait until the # full timeout. + stream_id_gen = self.store.get_events_stream_id_generator() + stream_id = self.get_success(stream_id_gen.get_next().__aenter__()) current_token = self.event_sources.get_current_token() future_position_token = current_token.copy_and_replace( StreamKeyType.ROOM, - RoomStreamToken(stream=current_token.room_key.stream + 1), + RoomStreamToken(stream=stream_id), ) future_position_token_serialized = self.get_success( |