diff options
Diffstat (limited to 'tests/federation')
| -rw-r--r-- | tests/federation/test_federation_catch_up.py | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/tests/federation/test_federation_catch_up.py b/tests/federation/test_federation_catch_up.py index 6cdcc378f0..cc52c3dfac 100644 --- a/tests/federation/test_federation_catch_up.py +++ b/tests/federation/test_federation_catch_up.py @@ -1,5 +1,10 @@ +from typing import List, Tuple + from mock import Mock +from synapse.events import EventBase +from synapse.federation.sender import PerDestinationQueue, TransactionManager +from synapse.federation.units import Edu from synapse.rest import admin from synapse.rest.client.v1 import login, room @@ -156,3 +161,163 @@ class FederationCatchUpTestCases(FederatingHomeserverTestCase): row_2["stream_ordering"], "Send succeeded but not marked as last_successful_stream_ordering", ) + + @override_config({"send_federation": True}) # critical to federate + def test_catch_up_from_blank_state(self): + """ + Runs an overall test of federation catch-up from scratch. + Further tests will focus on more narrow aspects and edge-cases, but I + hope to provide an overall view with this test. + """ + # bring the other server online + self.is_online = True + + # let's make some events for the other server to receive + self.register_user("u1", "you the one") + u1_token = self.login("u1", "you the one") + room_1 = self.helper.create_room_as("u1", tok=u1_token) + room_2 = self.helper.create_room_as("u1", tok=u1_token) + + # also critical to federate + self.get_success( + event_injection.inject_member_event(self.hs, room_1, "@user:host2", "join") + ) + self.get_success( + event_injection.inject_member_event(self.hs, room_2, "@user:host2", "join") + ) + + self.helper.send_state( + room_1, event_type="m.room.topic", body={"topic": "wombat"}, tok=u1_token + ) + + # check: PDU received for topic event + self.assertEqual(len(self.pdus), 1) + self.assertEqual(self.pdus[0]["type"], "m.room.topic") + + # take the remote offline + self.is_online = False + + # send another event + self.helper.send(room_1, "hi user!", tok=u1_token) + + # check: things didn't go well since the remote is down + self.assertEqual(len(self.failed_pdus), 1) + self.assertEqual(self.failed_pdus[0]["content"]["body"], "hi user!") + + # let's delete the federation transmission queue + # (this pretends we are starting up fresh.) + self.assertFalse( + self.hs.get_federation_sender() + ._per_destination_queues["host2"] + .transmission_loop_running + ) + del self.hs.get_federation_sender()._per_destination_queues["host2"] + + # let's also clear any backoffs + self.get_success( + self.hs.get_datastore().set_destination_retry_timings("host2", None, 0, 0) + ) + + # bring the remote online and clear the received pdu list + self.is_online = True + self.pdus = [] + + # now we need to initiate a federation transaction somehow… + # to do that, let's send another event (because it's simple to do) + # (do it to another room otherwise the catch-up logic decides it doesn't + # need to catch up room_1 — something I overlooked when first writing + # this test) + self.helper.send(room_2, "wombats!", tok=u1_token) + + # we should now have received both PDUs + self.assertEqual(len(self.pdus), 2) + self.assertEqual(self.pdus[0]["content"]["body"], "hi user!") + self.assertEqual(self.pdus[1]["content"]["body"], "wombats!") + + def make_fake_destination_queue( + self, destination: str = "host2" + ) -> Tuple[PerDestinationQueue, List[EventBase]]: + """ + Makes a fake per-destination queue. + """ + transaction_manager = TransactionManager(self.hs) + per_dest_queue = PerDestinationQueue(self.hs, transaction_manager, destination) + results_list = [] + + async def fake_send( + destination_tm: str, + pending_pdus: List[EventBase], + _pending_edus: List[Edu], + ) -> bool: + assert destination == destination_tm + results_list.extend(pending_pdus) + return True # success! + + transaction_manager.send_new_transaction = fake_send + + return per_dest_queue, results_list + + @override_config({"send_federation": True}) + def test_catch_up_loop(self): + """ + Tests the behaviour of _catch_up_transmission_loop. + """ + + # ARRANGE: + # - a local user (u1) + # - 3 rooms which u1 is joined to (and remote user @user:host2 is + # joined to) + # - some events (1 to 5) in those rooms + # we have 'already sent' events 1 and 2 to host2 + per_dest_queue, sent_pdus = self.make_fake_destination_queue() + + self.register_user("u1", "you the one") + u1_token = self.login("u1", "you the one") + room_1 = self.helper.create_room_as("u1", tok=u1_token) + room_2 = self.helper.create_room_as("u1", tok=u1_token) + room_3 = self.helper.create_room_as("u1", tok=u1_token) + self.get_success( + event_injection.inject_member_event(self.hs, room_1, "@user:host2", "join") + ) + self.get_success( + event_injection.inject_member_event(self.hs, room_2, "@user:host2", "join") + ) + self.get_success( + event_injection.inject_member_event(self.hs, room_3, "@user:host2", "join") + ) + + # create some events + self.helper.send(room_1, "you hear me!!", tok=u1_token) + event_id_2 = self.helper.send(room_2, "wombats!", tok=u1_token)["event_id"] + self.helper.send(room_3, "Matrix!", tok=u1_token) + event_id_4 = self.helper.send(room_2, "rabbits!", tok=u1_token)["event_id"] + event_id_5 = self.helper.send(room_3, "Synapse!", tok=u1_token)["event_id"] + + # destination_rooms should already be populated, but let us pretend that we already + # sent (successfully) up to and including event id 2 + event_2 = self.get_success(self.hs.get_datastore().get_event(event_id_2)) + + # also fetch event 5 so we know its last_successful_stream_ordering later + event_5 = self.get_success(self.hs.get_datastore().get_event(event_id_5)) + + self.get_success( + self.hs.get_datastore().set_destination_last_successful_stream_ordering( + "host2", event_2.internal_metadata.stream_ordering + ) + ) + + # ACT + self.get_success(per_dest_queue._catch_up_transmission_loop()) + + # ASSERT, noticing in particular: + # - event 3 not sent out, because event 5 replaces it + # - order is least recent first, so event 5 comes after event 4 + # - catch-up is completed + self.assertEqual(len(sent_pdus), 2) + self.assertEqual(sent_pdus[0].event_id, event_id_4) + self.assertEqual(sent_pdus[1].event_id, event_id_5) + self.assertFalse(per_dest_queue._catching_up) + self.assertEqual( + per_dest_queue._last_successful_stream_ordering, + event_5.internal_metadata.stream_ordering, + ) |