Add `open_pikerd()` and `spawn_emsd()`
The direct open is needed for running `pikerd` cmd and the ems spawn point is the first step toward detaching UI based order entry from the engine itself.supervise
parent
8812aff3b8
commit
79d37646a2
piker
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@ -1,7 +1,7 @@
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"""
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pikerd daemon lifecylcle & rpc
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"""
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from typing import Optional
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from typing import Optional, Dict, Callable
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from contextlib import asynccontextmanager
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import tractor
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@ -14,14 +14,41 @@ log = get_logger(__name__)
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_root_nursery: Optional[tractor._trionics.ActorNursery] = None
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_root_dname = 'pikerd'
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_root_modules = [
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__name__,
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'piker.exchange._ems',
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'piker.exchange._client',
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'piker.clearing._ems',
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'piker.clearing._client',
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]
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@asynccontextmanager
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async def open_pikerd(
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loglevel: Optional[str] = None
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) -> Optional[tractor._portal.Portal]:
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global _root_nursery
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async with tractor.open_root_actor(
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name=_root_dname,
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loglevel=loglevel,
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# TODO: eventually we should be able to avoid
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# having the root have more then permissions to
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# spawn other specialized daemons I think?
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# enable_modules=[__name__],
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enable_modules=_root_modules
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):
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# init root nursery
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try:
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async with tractor.open_nursery() as nursery:
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_root_nursery = nursery
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yield nursery
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finally:
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# client code may block indefinitely so cancel when
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# teardown is invoked
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await nursery.cancel()
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@asynccontextmanager
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async def maybe_open_pikerd(
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loglevel: Optional[str] = None
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@ -41,20 +68,12 @@ async def maybe_open_pikerd(
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yield portal
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else: # assume role
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async with tractor.open_root_actor(
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name=_root_dname,
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loglevel=loglevel,
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enable_modules=_root_modules
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):
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# init root nursery
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try:
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async with tractor.open_nursery() as nursery:
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_root_nursery = nursery
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yield None
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finally:
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# client code may block indefinitely so cancel when
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# teardown is invoked
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await nursery.cancel()
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async with open_pikerd(loglevel) as nursery:
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# in the case where we're starting up the
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# tractor-piker runtime stack in **this** process
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# we want to hand off a nursery for starting (as a sub)
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# whatever actor is requesting pikerd.
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yield None
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# brokerd enabled modules
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@ -72,10 +91,12 @@ async def spawn_brokerd(
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**tractor_kwargs
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) -> tractor._portal.Portal:
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log.info(f'Spawning {brokername} broker daemon')
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brokermod = get_brokermod(brokername)
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dname = f'brokerd.{brokername}'
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log.info(f'Spawning {brokername} broker daemon')
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tractor_kwargs = getattr(brokermod, '_spawnkwargs', {})
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extra_tractor_kwargs = getattr(brokermod, '_spawnkwargs', {})
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# TODO: raise exception when _root_nursery == None?
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global _root_nursery
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@ -83,6 +104,32 @@ async def spawn_brokerd(
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dname,
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enable_modules=_data_mods + [brokermod.__name__],
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loglevel=loglevel,
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**tractor_kwargs
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**extra_tractor_kwargs
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)
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return portal
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return dname
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async def spawn_emsd(
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brokername,
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loglevel: Optional[str] = None,
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**extra_tractor_kwargs
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) -> tractor._portal.Portal:
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from .clearing import _client
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log.info('Spawning emsd')
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# TODO: raise exception when _root_nursery == None?
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global _root_nursery
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assert _root_nursery
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portal = await _root_nursery.start_actor(
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'emsd',
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enable_modules=[
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'piker.clearing._ems',
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'piker.clearing._client',
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],
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loglevel=loglevel,
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**extra_tractor_kwargs
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)
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return 'emsd'
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