36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
# Copyright 2021 Canonical, Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import inspect
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class MessageHub:
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def __init__(self):
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self.subscriptions = {}
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def subscribe(self, channel, method, *args):
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self.subscriptions.setdefault(channel, []).append((method, args))
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async def abroadcast(self, channel):
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for m, args in self.subscriptions.get(channel, []):
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v = m(*args)
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if inspect.iscoroutine(v):
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await v
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def broadcast(self, channel):
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return asyncio.get_event_loop().create_task(self.abroadcast(channel))
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