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

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Linearize calls to _generate_user_id
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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
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14
synapse/handlers/register.py
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@ -24,7 +24,7 @@ from synapse.api.errors import (
from synapse.http.client import CaptchaServerHttpClient from synapse.http.client import CaptchaServerHttpClient
from synapse import types from synapse import types
from synapse.types import UserID 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 synapse.util.threepids import check_3pid_allowed
from ._base import BaseHandler from ._base import BaseHandler
@ -46,6 +46,10 @@ class RegistrationHandler(BaseHandler):
self.macaroon_gen = hs.get_macaroon_generator() self.macaroon_gen = hs.get_macaroon_generator()
self._generate_user_id_linearizer = Linearizer(
name="_generate_user_id_linearizer",
)
@defer.inlineCallbacks @defer.inlineCallbacks
def check_username(self, localpart, guest_access_token=None, def check_username(self, localpart, guest_access_token=None,
assigned_user_id=None): assigned_user_id=None):
@ -345,9 +349,11 @@ class RegistrationHandler(BaseHandler):
@defer.inlineCallbacks @defer.inlineCallbacks
def _generate_user_id(self, reseed=False): def _generate_user_id(self, reseed=False):
if reseed or self._next_generated_user_id is None: if reseed or self._next_generated_user_id is None:
self._next_generated_user_id = ( with (yield self._generate_user_id_linearizer.queue(())):
yield self.store.find_next_generated_user_id_localpart() if reseed or self._next_generated_user_id is None:
) self._next_generated_user_id = (
yield self.store.find_next_generated_user_id_localpart()
)
id = self._next_generated_user_id id = self._next_generated_user_id
self._next_generated_user_id += 1 self._next_generated_user_id += 1

4
synapse/storage/registration.py
View file

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