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Limit the number of events that can be created on a given room concurretnly

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This commit is contained in:
Erik Johnston 2016-11-10 16:44:35 +00:00
parent d073cb7ead
commit 2bd4513a4d
1 changed files with 29 additions and 25 deletions
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54
synapse/handlers/message.py
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@ -24,7 +24,7 @@ from synapse.push.action_generator import ActionGenerator
from synapse.types import ( from synapse.types import (
UserID, RoomAlias, RoomStreamToken, get_domain_from_id UserID, RoomAlias, RoomStreamToken, get_domain_from_id
) )
from synapse.util.async import run_on_reactor, ReadWriteLock from synapse.util.async import run_on_reactor, ReadWriteLock, Limiter
from synapse.util.logcontext import preserve_fn from synapse.util.logcontext import preserve_fn
from synapse.util.metrics import measure_func from synapse.util.metrics import measure_func
from synapse.visibility import filter_events_for_client from synapse.visibility import filter_events_for_client
@ -50,6 +50,8 @@ class MessageHandler(BaseHandler):
self.pagination_lock = ReadWriteLock() self.pagination_lock = ReadWriteLock()
self.limiter = Limiter(max_count=5)
@defer.inlineCallbacks @defer.inlineCallbacks
def purge_history(self, room_id, event_id): def purge_history(self, room_id, event_id):
event = yield self.store.get_event(event_id) event = yield self.store.get_event(event_id)
@ -191,36 +193,38 @@ class MessageHandler(BaseHandler):
""" """
builder = self.event_builder_factory.new(event_dict) builder = self.event_builder_factory.new(event_dict)
self.validator.validate_new(builder) with (yield self.limiter.queue(builder.room_id)):
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.hs.get_handlers().profile_handler profile = self.hs.get_handlers().profile_handler
content = builder.content content = builder.content
try: try:
content["displayname"] = yield profile.get_displayname(target) content["displayname"] = yield profile.get_displayname(target)
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(
builder=builder,
prev_event_ids=prev_event_ids,
)
event, context = yield self._create_new_client_event(
builder=builder,
prev_event_ids=prev_event_ids,
)
defer.returnValue((event, context)) defer.returnValue((event, context))
@defer.inlineCallbacks @defer.inlineCallbacks