mirror of
https://mau.dev/maunium/synapse.git
synced 2024-07-08 04:02:16 +00:00
9f1800fba8
The only place that was observed was to set the profile. I've made it so that the profile is set within store.register in the same transaction that creates the user. This required some slight changes to the registration code for upgrading guest users, since it previously relied on the distributor swallowing errors if the profile already existed.
151 lines
4.8 KiB
Python
151 lines
4.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from twisted.internet import defer
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from synapse.util.logcontext import (
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PreserveLoggingContext, preserve_context_over_fn
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)
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from synapse.util import unwrapFirstError
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import logging
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logger = logging.getLogger(__name__)
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def user_left_room(distributor, user, room_id):
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return preserve_context_over_fn(
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distributor.fire,
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"user_left_room", user=user, room_id=room_id
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)
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def user_joined_room(distributor, user, room_id):
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return preserve_context_over_fn(
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distributor.fire,
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"user_joined_room", user=user, room_id=room_id
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)
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class Distributor(object):
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"""A central dispatch point for loosely-connected pieces of code to
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register, observe, and fire signals.
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Signals are named simply by strings.
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TODO(paul): It would be nice to give signals stronger object identities,
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so we can attach metadata, docstrings, detect typoes, etc... But this
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model will do for today.
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"""
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def __init__(self, suppress_failures=True):
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self.suppress_failures = suppress_failures
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self.signals = {}
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self.pre_registration = {}
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def declare(self, name):
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if name in self.signals:
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raise KeyError("%r already has a signal named %s" % (self, name))
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self.signals[name] = Signal(
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name,
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suppress_failures=self.suppress_failures,
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)
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if name in self.pre_registration:
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signal = self.signals[name]
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for observer in self.pre_registration[name]:
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signal.observe(observer)
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def observe(self, name, observer):
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if name in self.signals:
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self.signals[name].observe(observer)
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else:
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# TODO: Avoid strong ordering dependency by allowing people to
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# pre-register observations on signals that don't exist yet.
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if name not in self.pre_registration:
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self.pre_registration[name] = []
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self.pre_registration[name].append(observer)
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def fire(self, name, *args, **kwargs):
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if name not in self.signals:
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raise KeyError("%r does not have a signal named %s" % (self, name))
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return self.signals[name].fire(*args, **kwargs)
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class Signal(object):
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"""A Signal is a dispatch point that stores a list of callables as
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observers of it.
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Signals can be "fired", meaning that every callable observing it is
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invoked. Firing a signal does not change its state; it can be fired again
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at any later point. Firing a signal passes any arguments from the fire
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method into all of the observers.
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"""
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def __init__(self, name, suppress_failures):
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self.name = name
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self.suppress_failures = suppress_failures
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self.observers = []
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def observe(self, observer):
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"""Adds a new callable to the observer list which will be invoked by
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the 'fire' method.
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Each observer callable may return a Deferred."""
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self.observers.append(observer)
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@defer.inlineCallbacks
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def fire(self, *args, **kwargs):
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"""Invokes every callable in the observer list, passing in the args and
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kwargs. Exceptions thrown by observers are logged but ignored. It is
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not an error to fire a signal with no observers.
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Returns a Deferred that will complete when all the observers have
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completed."""
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def do(observer):
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def eb(failure):
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logger.warning(
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"%s signal observer %s failed: %r",
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self.name, observer, failure,
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exc_info=(
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failure.type,
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failure.value,
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failure.getTracebackObject()))
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if not self.suppress_failures:
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return failure
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return defer.maybeDeferred(observer, *args, **kwargs).addErrback(eb)
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with PreserveLoggingContext():
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deferreds = [
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do(observer)
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for observer in self.observers
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]
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res = yield defer.gatherResults(
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deferreds, consumeErrors=True
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).addErrback(unwrapFirstError)
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defer.returnValue(res)
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def __repr__(self):
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return "<Signal name=%r>" % (self.name,)
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