89 lines
2.1 KiB
Python
89 lines
2.1 KiB
Python
# piker: trading gear for hackers
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# Copyright (C) Tyler Goodlet (in stewardship for piker0)
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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 published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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Data infra.
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We provide tsdb integrations for retrieving
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and storing data from your brokers as well as
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sharing live streams over a network.
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"""
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import tractor
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import trio
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from ..log import (
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get_console_log,
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)
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from ._normalize import iterticks
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from ._sharedmem import (
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maybe_open_shm_array,
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attach_shm_array,
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open_shm_array,
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get_shm_token,
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ShmArray,
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)
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from .feed import (
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open_feed,
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)
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__all__ = [
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'open_feed',
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'ShmArray',
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'iterticks',
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'maybe_open_shm_array',
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'attach_shm_array',
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'open_shm_array',
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'get_shm_token',
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]
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@tractor.context
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async def _setup_persistent_brokerd(
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ctx: tractor.Context,
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brokername: str,
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) -> None:
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'''
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Allocate a actor-wide service nursery in ``brokerd``
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such that feeds can be run in the background persistently by
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the broker backend as needed.
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'''
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get_console_log(tractor.current_actor().loglevel)
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from .feed import (
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_bus,
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get_feed_bus,
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)
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global _bus
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assert not _bus
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async with trio.open_nursery() as service_nursery:
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# assign a nursery to the feeds bus for spawning
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# background tasks from clients
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get_feed_bus(brokername, service_nursery)
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# unblock caller
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await ctx.started()
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# we pin this task to keep the feeds manager active until the
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# parent actor decides to tear it down
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await trio.sleep_forever()
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