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Use RoomVersion objects (#10934)

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Various refactors to use `RoomVersion` objects instead of room version identifiers.
This commit is contained in:
Richard van der Hoff 2021-09-29 10:57:10 +01:00 committed by GitHub
parent 2be0fde3d6
commit 5279b9161b
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5 changed files with 50 additions and 48 deletions
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1
changelog.d/10934.misc Normal file
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@ -0,0 +1 @@
Refactor various parts of the codebase to use `RoomVersion` objects instead of room version identifier strings.

20
synapse/events/builder.py
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@ -18,10 +18,8 @@ import attr
from nacl.signing import SigningKey
from synapse.api.constants import MAX_DEPTH
from synapse.api.errors import UnsupportedRoomVersionError
from synapse.api.room_versions import (
KNOWN_EVENT_FORMAT_VERSIONS,
KNOWN_ROOM_VERSIONS,
EventFormatVersions,
RoomVersion,
)
@ -197,24 +195,6 @@ class EventBuilderFactory:
self.state = hs.get_state_handler()
self._event_auth_handler = hs.get_event_auth_handler()
def new(self, room_version: str, key_values: dict) -> EventBuilder:
"""Generate an event builder appropriate for the given room version
Deprecated: use for_room_version with a RoomVersion object instead
Args:
room_version: Version of the room that we're creating an event builder for
key_values: Fields used as the basis of the new event
Returns:
EventBuilder
"""
v = KNOWN_ROOM_VERSIONS.get(room_version)
if not v:
# this can happen if support is withdrawn for a room version
raise UnsupportedRoomVersionError()
return self.for_room_version(v, key_values)
def for_room_version(
self, room_version: RoomVersion, key_values: dict
) -> EventBuilder:

46
synapse/handlers/federation.py
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@ -718,8 +718,8 @@ class FederationHandler(BaseHandler):
state_ids,
)
builder = self.event_builder_factory.new(
room_version.identifier,
builder = self.event_builder_factory.for_room_version(
room_version,
{
"type": EventTypes.Member,
"content": event_content,
@ -897,9 +897,9 @@ class FederationHandler(BaseHandler):
)
raise SynapseError(403, "User not from origin", Codes.FORBIDDEN)
room_version = await self.store.get_room_version_id(room_id)
builder = self.event_builder_factory.new(
room_version,
room_version_obj = await self.store.get_room_version(room_id)
builder = self.event_builder_factory.for_room_version(
room_version_obj,
{
"type": EventTypes.Member,
"content": {"membership": Membership.LEAVE},
@ -917,7 +917,7 @@ class FederationHandler(BaseHandler):
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_leave_request`
await self._event_auth_handler.check_from_context(
room_version, event, context, do_sig_check=False
room_version_obj.identifier, event, context, do_sig_check=False
)
except AuthError as e:
logger.warning("Failed to create new leave %r because %s", event, e)
@ -949,10 +949,10 @@ class FederationHandler(BaseHandler):
)
raise SynapseError(403, "User not from origin", Codes.FORBIDDEN)
room_version = await self.store.get_room_version_id(room_id)
room_version_obj = await self.store.get_room_version(room_id)
builder = self.event_builder_factory.new(
room_version,
builder = self.event_builder_factory.for_room_version(
room_version_obj,
{
"type": EventTypes.Member,
"content": {"membership": Membership.KNOCK},
@ -979,7 +979,7 @@ class FederationHandler(BaseHandler):
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_knock_request`
await self._event_auth_handler.check_from_context(
room_version, event, context, do_sig_check=False
room_version_obj.identifier, event, context, do_sig_check=False
)
except AuthError as e:
logger.warning("Failed to create new knock %r because %s", event, e)
@ -1245,8 +1245,10 @@ class FederationHandler(BaseHandler):
}
if await self._event_auth_handler.check_host_in_room(room_id, self.hs.hostname):
room_version = await self.store.get_room_version_id(room_id)
builder = self.event_builder_factory.new(room_version, event_dict)
room_version_obj = await self.store.get_room_version(room_id)
builder = self.event_builder_factory.for_room_version(
room_version_obj, event_dict
)
EventValidator().validate_builder(builder)
event, context = await self.event_creation_handler.create_new_client_event(
@ -1254,7 +1256,7 @@ class FederationHandler(BaseHandler):
)
event, context = await self.add_display_name_to_third_party_invite(
room_version, event_dict, event, context
room_version_obj, event_dict, event, context
)
EventValidator().validate_new(event, self.config)
@ -1265,7 +1267,7 @@ class FederationHandler(BaseHandler):
try:
await self._event_auth_handler.check_from_context(
room_version, event, context
room_version_obj.identifier, event, context
)
except AuthError as e:
logger.warning("Denying new third party invite %r because %s", event, e)
@ -1299,22 +1301,24 @@ class FederationHandler(BaseHandler):
"""
assert_params_in_dict(event_dict, ["room_id"])
room_version = await self.store.get_room_version_id(event_dict["room_id"])
room_version_obj = await self.store.get_room_version(event_dict["room_id"])
# NB: event_dict has a particular specced format we might need to fudge
# if we change event formats too much.
builder = self.event_builder_factory.new(room_version, event_dict)
builder = self.event_builder_factory.for_room_version(
room_version_obj, event_dict
)
event, context = await self.event_creation_handler.create_new_client_event(
builder=builder
)
event, context = await self.add_display_name_to_third_party_invite(
room_version, event_dict, event, context
room_version_obj, event_dict, event, context
)
try:
await self._event_auth_handler.check_from_context(
room_version, event, context
room_version_obj.identifier, event, context
)
except AuthError as e:
logger.warning("Denying third party invite %r because %s", event, e)
@ -1331,7 +1335,7 @@ class FederationHandler(BaseHandler):
async def add_display_name_to_third_party_invite(
self,
room_version: str,
room_version_obj: RoomVersion,
event_dict: JsonDict,
event: EventBase,
context: EventContext,
@ -1363,7 +1367,9 @@ class FederationHandler(BaseHandler):
# auth checks. If we need the invite and don't have it then the
# auth check code will explode appropriately.
builder = self.event_builder_factory.new(room_version, event_dict)
builder = self.event_builder_factory.for_room_version(
room_version_obj, event_dict
)
EventValidator().validate_builder(builder)
event, context = await self.event_creation_handler.create_new_client_event(
builder=builder

27
synapse/handlers/message.py
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@ -40,6 +40,7 @@ from synapse.api.errors import (
NotFoundError,
ShadowBanError,
SynapseError,
UnsupportedRoomVersionError,
)
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersions
from synapse.api.urls import ConsentURIBuilder
@ -550,16 +551,22 @@ class EventCreationHandler:
await self.auth.check_auth_blocking(requester=requester)
if event_dict["type"] == EventTypes.Create and event_dict["state_key"] == "":
room_version = event_dict["content"]["room_version"]
room_version_id = event_dict["content"]["room_version"]
room_version_obj = KNOWN_ROOM_VERSIONS.get(room_version_id)
if not room_version_obj:
# this can happen if support is withdrawn for a room version
raise UnsupportedRoomVersionError(room_version_id)
else:
try:
room_version = await self.store.get_room_version_id(
room_version_obj = await self.store.get_room_version(
event_dict["room_id"]
)
except NotFoundError:
raise AuthError(403, "Unknown room")
builder = self.event_builder_factory.new(room_version, event_dict)
builder = self.event_builder_factory.for_room_version(
room_version_obj, event_dict
)
self.validator.validate_builder(builder)
@ -1070,9 +1077,17 @@ class EventCreationHandler:
EventTypes.Create,
"",
):
room_version = event.content.get("room_version", RoomVersions.V1.identifier)
room_version_id = event.content.get(
"room_version", RoomVersions.V1.identifier
)
room_version_obj = KNOWN_ROOM_VERSIONS.get(room_version_id)
if not room_version_obj:
raise UnsupportedRoomVersionError(
"Attempt to create a room with unsupported room version %s"
% (room_version_id,)
)
else:
room_version = await self.store.get_room_version_id(event.room_id)
room_version_obj = await self.store.get_room_version(event.room_id)
if event.internal_metadata.is_out_of_band_membership():
# the only sort of out-of-band-membership events we expect to see here are
@ -1082,7 +1097,7 @@ class EventCreationHandler:
else:
try:
await self._event_auth_handler.check_from_context(
room_version, event, context
room_version_obj.identifier, event, context
)
except AuthError as err:
logger.warning("Denying new event %r because %s", event, err)

4
synapse/handlers/room.py
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@ -237,9 +237,9 @@ class RoomCreationHandler(BaseHandler):
},
},
)
old_room_version = await self.store.get_room_version_id(old_room_id)
old_room_version = await self.store.get_room_version(old_room_id)
await self._event_auth_handler.check_from_context(
old_room_version, tombstone_event, tombstone_context
old_room_version.identifier, tombstone_event, tombstone_context
)
await self.clone_existing_room(