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https://github.com/element-hq/synapse
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Linearize calls to _generate_user_id
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parent
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commit
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1 changed files with 7 additions and 4 deletions
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@ -24,7 +24,7 @@ from synapse.api.errors import (
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from synapse.http.client import CaptchaServerHttpClient
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from synapse import types
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from synapse.types import UserID
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from synapse.util.async import run_on_reactor
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from synapse.util.async import run_on_reactor, Linearizer
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from synapse.util.threepids import check_3pid_allowed
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from ._base import BaseHandler
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@ -46,6 +46,8 @@ class RegistrationHandler(BaseHandler):
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self.macaroon_gen = hs.get_macaroon_generator()
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self._generate_user_id_linearizer = Linearizer(name="_generate_user_id_linearizer")
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@defer.inlineCallbacks
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def check_username(self, localpart, guest_access_token=None,
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assigned_user_id=None):
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@ -345,9 +347,10 @@ class RegistrationHandler(BaseHandler):
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@defer.inlineCallbacks
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def _generate_user_id(self, reseed=False):
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if reseed or self._next_generated_user_id is None:
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self._next_generated_user_id = (
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yield self.store.find_next_generated_user_id_localpart()
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)
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with (yield self._generate_user_id_linearizer.queue(())):
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self._next_generated_user_id = (
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yield self.store.find_next_generated_user_id_localpart()
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)
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id = self._next_generated_user_id
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self._next_generated_user_id += 1
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