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Merge pull request #3029 from matrix-org/erikj/linearize_generate_user_id

Linearize calls to _generate_user_id
This commit is contained in:
Erik Johnston 2018-03-28 10:00:31 +01:00 committed by GitHub
commit f879127aaa
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2 changed files with 11 additions and 7 deletions

View file

@ -24,7 +24,7 @@ from synapse.api.errors import (
from synapse.http.client import CaptchaServerHttpClient
from synapse import types
from synapse.types import UserID
from synapse.util.async import run_on_reactor
from synapse.util.async import run_on_reactor, Linearizer
from synapse.util.threepids import check_3pid_allowed
from ._base import BaseHandler
@ -46,6 +46,10 @@ class RegistrationHandler(BaseHandler):
self.macaroon_gen = hs.get_macaroon_generator()
self._generate_user_id_linearizer = Linearizer(
name="_generate_user_id_linearizer",
)
@defer.inlineCallbacks
def check_username(self, localpart, guest_access_token=None,
assigned_user_id=None):
@ -344,6 +348,8 @@ class RegistrationHandler(BaseHandler):
@defer.inlineCallbacks
def _generate_user_id(self, reseed=False):
if reseed or self._next_generated_user_id is None:
with (yield self._generate_user_id_linearizer.queue(())):
if reseed or self._next_generated_user_id is None:
self._next_generated_user_id = (
yield self.store.find_next_generated_user_id_localpart()

View file

@ -460,14 +460,12 @@ class RegistrationStore(RegistrationWorkerStore,
"""
def _find_next_generated_user_id(txn):
txn.execute("SELECT name FROM users")
rows = self.cursor_to_dict(txn)
regex = re.compile("^@(\d+):")
found = set()
for r in rows:
user_id = r["name"]
for user_id, in txn:
match = regex.search(user_id)
if match:
found.add(int(match.group(1)))