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Fix device list update stream ids going backward (#7158)

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Occasionally we could get a federation device list update transaction which
looked like:

```
[
    {'edu_type': 'm.device_list_update', 'content': {'user_id': '@user:test', 'device_id': 'D2', 'prev_id': [], 'stream_id': 12, 'deleted': True}},
    {'edu_type': 'm.device_list_update', 'content': {'user_id': '@user:test', 'device_id': 'D1', 'prev_id': [12], 'stream_id': 11, 'deleted': True}},
    {'edu_type': 'm.device_list_update', 'content': {'user_id': '@user:test', 'device_id': 'D3', 'prev_id': [11], 'stream_id': 13, 'deleted': True}}
]
```

Having `stream_ids` which are lower than `prev_ids` looks odd. It might work
(I'm not actually sure), but in any case it doesn't seem like a reasonable
thing to expect other implementations to support.
This commit is contained in:
Richard van der Hoff 2020-04-03 10:40:22 +01:00 • committed by GitHub
parent 61bb834364
commit daa1ac89a0
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3 changed files with 15 additions and 2 deletions
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6
tests/federation/test_federation_sender.py
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@ -297,6 +297,7 @@ class FederationSenderDevicesTestCases(HomeserverTestCase):
c = edu["content"]
if stream_id is not None:
self.assertEqual(c["prev_id"], [stream_id])
self.assertGreaterEqual(c["stream_id"], stream_id)
stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2"}, devices)
@ -330,6 +331,7 @@ class FederationSenderDevicesTestCases(HomeserverTestCase):
c.items(),
{"user_id": u1, "prev_id": [stream_id], "deleted": True}.items(),
)
self.assertGreaterEqual(c["stream_id"], stream_id)
stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2", "D3"}, devices)
@ -366,6 +368,8 @@ class FederationSenderDevicesTestCases(HomeserverTestCase):
self.assertEqual(edu["edu_type"], "m.device_list_update")
c = edu["content"]
self.assertEqual(c["prev_id"], [stream_id] if stream_id is not None else [])
if stream_id is not None:
self.assertGreaterEqual(c["stream_id"], stream_id)
stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2", "D3"}, devices)
@ -482,6 +486,8 @@ class FederationSenderDevicesTestCases(HomeserverTestCase):
}
self.assertLessEqual(expected.items(), content.items())
if prev_stream_id is not None:
self.assertGreaterEqual(content["stream_id"], prev_stream_id)
return content["stream_id"]
def check_signing_key_update_txn(self, txn: JsonDict,) -> None: