Fix not sending events over federation when using sharded event persisters (#8536)

* Fix outbound federaion with multiple event persisters.

We incorrectly notified federation senders that the minimum persisted
stream position had advanced when we got an `RDATA` from an event
persister.

Notifying of federation senders already correctly happens in the
notifier, so we just delete the offending line.

* Change some interfaces to use RoomStreamToken.

By enforcing use of `RoomStreamTokens` we make it less likely that
people pass in random ints that they got from somewhere random.

1 files changed, 10 insertions, 3 deletions

diff --git a/tests/handlers/test_appservice.py b/tests/handlers/test_appservice.py

index 2a0b7c1b56..ee4f3da31c 100644
--- a/tests/handlers/test_appservice.py
+++ b/tests/handlers/test_appservice.py
@@ -18,6 +18,7 @@ from mock import Mock
 from twisted.internet import defer
 
 from synapse.handlers.appservice import ApplicationServicesHandler
+from synapse.types import RoomStreamToken
 
 from tests.test_utils import make_awaitable
 from tests.utils import MockClock
@@ -61,7 +62,9 @@ class AppServiceHandlerTestCase(unittest.TestCase):
             defer.succeed((0, [event])),
             defer.succeed((0, [])),
         ]
-        yield defer.ensureDeferred(self.handler.notify_interested_services(0))
+        yield defer.ensureDeferred(
+            self.handler.notify_interested_services(RoomStreamToken(None, 0))
+        )
         self.mock_scheduler.submit_event_for_as.assert_called_once_with(
             interested_service, event
         )
@@ -80,7 +83,9 @@ class AppServiceHandlerTestCase(unittest.TestCase):
             defer.succeed((0, [event])),
             defer.succeed((0, [])),
         ]
-        yield defer.ensureDeferred(self.handler.notify_interested_services(0))
+        yield defer.ensureDeferred(
+            self.handler.notify_interested_services(RoomStreamToken(None, 0))
+        )
         self.mock_as_api.query_user.assert_called_once_with(services[0], user_id)
 
     @defer.inlineCallbacks
@@ -97,7 +102,9 @@ class AppServiceHandlerTestCase(unittest.TestCase):
             defer.succeed((0, [event])),
             defer.succeed((0, [])),
         ]
-        yield defer.ensureDeferred(self.handler.notify_interested_services(0))
+        yield defer.ensureDeferred(
+            self.handler.notify_interested_services(RoomStreamToken(None, 0))
+        )
         self.assertFalse(
             self.mock_as_api.query_user.called,
             "query_user called when it shouldn't have been.",