From a50cf929c13044f25c3776802287458fe5695c37 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 23 Jan 2019 20:21:33 +0000 Subject: Require event format version to parse or create events --- synapse/events/__init__.py | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) (limited to 'synapse/events/__init__.py') diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py index 38470ad176..3fe52aaa45 100644 --- a/synapse/events/__init__.py +++ b/synapse/events/__init__.py @@ -18,7 +18,11 @@ from distutils.util import strtobool import six -from synapse.api.constants import KNOWN_ROOM_VERSIONS, EventFormatVersions +from synapse.api.constants import ( + KNOWN_EVENT_FORMAT_VERSIONS, + KNOWN_ROOM_VERSIONS, + EventFormatVersions, +) from synapse.util.caches import intern_dict from synapse.util.frozenutils import freeze @@ -256,3 +260,21 @@ def room_version_to_event_format(room_version): raise RuntimeError("Unrecognized room version %s" % (room_version,)) return EventFormatVersions.V1 + + +def event_type_from_format_version(format_version): + """Returns the python type to use to construct an Event object for the + given event format version. + + Args: + format_version (int): The event format version + + Returns: + type: A type that can be initialized as per the initializer of + `FrozenEvent` + """ + if format_version not in KNOWN_EVENT_FORMAT_VERSIONS: + raise Exception( + "No event format %r" % (format_version,) + ) + return FrozenEvent -- cgit 1.4.1