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Add a test room version which updates event ID format (#5210)

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Implements MSC1884
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Richard van der Hoff 2019-05-20 15:54:42 +01:00 committed by GitHub
parent edef6d29ae
commit 5206648a4a
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3 changed files with 34 additions and 3 deletions
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1
changelog.d/5210.feature Normal file
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@ -0,0 +1 @@
Add a new room version which uses a new event ID format.

13
synapse/api/room_versions.py
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@ -19,13 +19,15 @@ class EventFormatVersions(object):
"""This is an internal enum for tracking the version of the event format,
independently from the room version.
"""
V1 = 1 # $id:server format
V2 = 2 # MSC1659-style $hash format: introduced for room v3
V1 = 1 # $id:server event id format
V2 = 2 # MSC1659-style $hash event id format: introduced for room v3
V3 = 3 # MSC1884-style $hash format: introduced for room v4
KNOWN_EVENT_FORMAT_VERSIONS = {
EventFormatVersions.V1,
EventFormatVersions.V2,
EventFormatVersions.V3,
}
@ -75,6 +77,12 @@ class RoomVersions(object):
EventFormatVersions.V2,
StateResolutionVersions.V2,
)
EVENTID_NOSLASH_TEST = RoomVersion(
"eventid-noslash-test",
RoomDisposition.UNSTABLE,
EventFormatVersions.V3,
StateResolutionVersions.V2,
)
# the version we will give rooms which are created on this server
@ -87,5 +95,6 @@ KNOWN_ROOM_VERSIONS = {
RoomVersions.V2,
RoomVersions.V3,
RoomVersions.STATE_V2_TEST,
RoomVersions.EVENTID_NOSLASH_TEST,
)
} # type: dict[str, RoomVersion]

23
synapse/events/__init__.py
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@ -335,13 +335,32 @@ class FrozenEventV2(EventBase):
return self.__repr__()
def __repr__(self):
return "<FrozenEventV2 event_id='%s', type='%s', state_key='%s'>" % (
return "<%s event_id='%s', type='%s', state_key='%s'>" % (
self.__class__.__name__,
self.event_id,
self.get("type", None),
self.get("state_key", None),
)
class FrozenEventV3(FrozenEventV2):
"""FrozenEventV3, which differs from FrozenEventV2 only in the event_id format"""
format_version = EventFormatVersions.V3 # All events of this type are V3
@property
def event_id(self):
# We have to import this here as otherwise we get an import loop which
# is hard to break.
from synapse.crypto.event_signing import compute_event_reference_hash
if self._event_id:
return self._event_id
self._event_id = "$" + encode_base64(
compute_event_reference_hash(self)[1], urlsafe=True
)
return self._event_id
def room_version_to_event_format(room_version):
"""Converts a room version string to the event format
@ -376,6 +395,8 @@ def event_type_from_format_version(format_version):
return FrozenEvent
elif format_version == EventFormatVersions.V2:
return FrozenEventV2
elif format_version == EventFormatVersions.V3:
return FrozenEventV3
else:
raise Exception(
"No event format %r" % (format_version,)