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Merge pull request #3079 from matrix-org/erikj/limit_concurrent_sends

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Limit concurrent event sends for a room
This commit is contained in:
Erik Johnston 2018-04-10 16:43:58 +01:00 committed by GitHub
commit eaa2ebf20b
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2 changed files with 53 additions and 52 deletions
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98
synapse/handlers/message.py
View File

@ -454,40 +454,39 @@ class EventCreationHandler(object):
""" """
builder = self.event_builder_factory.new(event_dict) builder = self.event_builder_factory.new(event_dict)
with (yield self.limiter.queue(builder.room_id)): self.validator.validate_new(builder)
self.validator.validate_new(builder)
if builder.type == EventTypes.Member: if builder.type == EventTypes.Member:
membership = builder.content.get("membership", None) membership = builder.content.get("membership", None)
target = UserID.from_string(builder.state_key) target = UserID.from_string(builder.state_key)
if membership in {Membership.JOIN, Membership.INVITE}: if membership in {Membership.JOIN, Membership.INVITE}:
# If event doesn't include a display name, add one. # If event doesn't include a display name, add one.
profile = self.profile_handler profile = self.profile_handler
content = builder.content content = builder.content
try: try:
if "displayname" not in content: if "displayname" not in content:
content["displayname"] = yield profile.get_displayname(target) content["displayname"] = yield profile.get_displayname(target)
if "avatar_url" not in content: if "avatar_url" not in content:
content["avatar_url"] = yield profile.get_avatar_url(target) content["avatar_url"] = yield profile.get_avatar_url(target)
except Exception as e: except Exception as e:
logger.info( logger.info(
"Failed to get profile information for %r: %s", "Failed to get profile information for %r: %s",
target, e target, e
) )
if token_id is not None: if token_id is not None:
builder.internal_metadata.token_id = token_id builder.internal_metadata.token_id = token_id
if txn_id is not None: if txn_id is not None:
builder.internal_metadata.txn_id = txn_id builder.internal_metadata.txn_id = txn_id
event, context = yield self.create_new_client_event( event, context = yield self.create_new_client_event(
builder=builder, builder=builder,
requester=requester, requester=requester,
prev_event_ids=prev_event_ids, prev_event_ids=prev_event_ids,
) )
defer.returnValue((event, context)) defer.returnValue((event, context))
@ -557,27 +556,34 @@ class EventCreationHandler(object):
See self.create_event and self.send_nonmember_event. See self.create_event and self.send_nonmember_event.
""" """
event, context = yield self.create_event(
requester,
event_dict,
token_id=requester.access_token_id,
txn_id=txn_id
)
spam_error = self.spam_checker.check_event_for_spam(event) # We limit the number of concurrent event sends in a room so that we
if spam_error: # don't fork the DAG too much. If we don't limit then we can end up in
if not isinstance(spam_error, basestring): # a situation where event persistence can't keep up, causing
spam_error = "Spam is not permitted here" # extremities to pile up, which in turn leads to state resolution
raise SynapseError( # taking longer.
403, spam_error, Codes.FORBIDDEN with (yield self.limiter.queue(event_dict["room_id"])):
event, context = yield self.create_event(
requester,
event_dict,
token_id=requester.access_token_id,
txn_id=txn_id
) )
yield self.send_nonmember_event( spam_error = self.spam_checker.check_event_for_spam(event)
requester, if spam_error:
event, if not isinstance(spam_error, basestring):
context, spam_error = "Spam is not permitted here"
ratelimit=ratelimit, raise SynapseError(
) 403, spam_error, Codes.FORBIDDEN
)
yield self.send_nonmember_event(
requester,
event,
context,
ratelimit=ratelimit,
)
defer.returnValue(event) defer.returnValue(event)
@measure_func("create_new_client_event") @measure_func("create_new_client_event")

7
synapse/rest/client/v1/room.py
View File

@ -165,17 +165,12 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
content=content, content=content,
) )
else: else:
event, context = yield self.event_creation_hander.create_event( event = yield self.event_creation_hander.create_and_send_nonmember_event(
requester, requester,
event_dict, event_dict,
token_id=requester.access_token_id,
txn_id=txn_id, txn_id=txn_id,
) )
yield self.event_creation_hander.send_nonmember_event(
requester, event, context,
)
ret = {} ret = {}
if event: if event:
ret = {"event_id": event.event_id} ret = {"event_id": event.event_id}