Prep service mngr for move to `tractor.hilevel`
Given it's a fairly simple yet useful abstraction, it makes sense to offer this sub-sys alongside the core `tractor` runtime lib. Without going into extreme detail on the impl changes (it'll come in the commit that moves to the other repo) here is the high level summary: ------ - ------ - rename `Services` -> `ServiceMngr` and use an factory `@acm` to guarantee a single-instance-per-actor using a niche approach for a singleton object using a default keyword-arg B) - the mod level `open_service_mngr()` and `get_service_mngr()` are the new allocation/access API. - add a `ServiceMngr.start_service()` method which does the work of both spawning a new subactor (for the daemon) and uses its portal to start the mngr side supervision task. - open actor/task nurseries inside the `@acm` allocator. Adjust other dependent subsystems to match: ------ - ------ - use `open_service_mngr()` when first allocated in `open_pikerd()`. - use `get_service_mngr()` instead of importing the class ref inside `.service.maybe_spawn_daemon()`, `.brokers._daemon.spawn_brokerd()` and `.data._sampling.spawn_samplerd()` using a `partial` to pack in the endpoint ctx kwargs (unpacked inside `.start_service()` XD).service_mng_to_tractor
parent
b577180773
commit
7447758cfe
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@ -23,6 +23,7 @@ from __future__ import annotations
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from contextlib import (
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from contextlib import (
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asynccontextmanager as acm,
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asynccontextmanager as acm,
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)
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)
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from functools import partial
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from types import ModuleType
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from types import ModuleType
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from typing import (
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from typing import (
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TYPE_CHECKING,
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TYPE_CHECKING,
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@ -190,14 +191,17 @@ def broker_init(
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async def spawn_brokerd(
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async def spawn_brokerd(
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brokername: str,
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brokername: str,
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loglevel: str | None = None,
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loglevel: str | None = None,
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**tractor_kwargs,
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**tractor_kwargs,
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) -> bool:
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) -> bool:
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'''
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Spawn a `brokerd.<backendname>` subactor service daemon
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using `pikerd`'s service mngr.
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'''
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from piker.service._util import log # use service mngr log
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from piker.service._util import log # use service mngr log
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log.info(f'Spawning {brokername} broker daemon')
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log.info(f'Spawning {brokername} broker daemon')
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@ -217,27 +221,35 @@ async def spawn_brokerd(
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# ask `pikerd` to spawn a new sub-actor and manage it under its
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# ask `pikerd` to spawn a new sub-actor and manage it under its
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# actor nursery
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# actor nursery
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from piker.service import Services
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from piker.service import (
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get_service_mngr,
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ServiceMngr,
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)
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dname: str = tractor_kwargs.pop('name') # f'brokerd.{brokername}'
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dname: str = tractor_kwargs.pop('name') # f'brokerd.{brokername}'
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portal = await Services.actor_n.start_actor(
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mngr: ServiceMngr = get_service_mngr()
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dname,
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ctx: tractor.Context = await mngr.start_service(
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enable_modules=_data_mods + tractor_kwargs.pop('enable_modules'),
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daemon_name=dname,
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debug_mode=Services.debug_mode,
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ctx_ep=partial(
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# signature of target root-task endpoint
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daemon_fixture_ep,
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# passed to daemon_fixture_ep(**kwargs)
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brokername=brokername,
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loglevel=loglevel,
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),
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debug_mode=mngr.debug_mode,
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loglevel=loglevel,
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enable_modules=(
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_data_mods
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+
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tractor_kwargs.pop('enable_modules')
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),
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**tractor_kwargs
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**tractor_kwargs
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)
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)
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assert (
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# NOTE: the service mngr expects an already spawned actor + its
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not ctx.cancel_called
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# portal ref in order to do non-blocking setup of brokerd
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and ctx.portal # parent side
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# service nursery.
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and dname in ctx.chan.uid # subactor is named as desired
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await Services.start_service_task(
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dname,
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portal,
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# signature of target root-task endpoint
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daemon_fixture_ep,
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brokername=brokername,
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loglevel=loglevel,
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)
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)
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return True
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return True
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@ -262,8 +274,7 @@ async def maybe_spawn_brokerd(
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from piker.service import maybe_spawn_daemon
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from piker.service import maybe_spawn_daemon
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async with maybe_spawn_daemon(
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async with maybe_spawn_daemon(
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service_name=f'brokerd.{brokername}',
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f'brokerd.{brokername}',
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service_task_target=spawn_brokerd,
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service_task_target=spawn_brokerd,
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spawn_args={
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spawn_args={
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'brokername': brokername,
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'brokername': brokername,
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@ -25,6 +25,7 @@ from collections import (
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defaultdict,
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defaultdict,
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)
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)
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from contextlib import asynccontextmanager as acm
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from contextlib import asynccontextmanager as acm
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from functools import partial
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import time
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import time
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from typing import (
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from typing import (
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Any,
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Any,
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@ -42,7 +43,7 @@ from tractor.trionics import (
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maybe_open_nursery,
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maybe_open_nursery,
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)
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)
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import trio
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import trio
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from trio_typing import TaskStatus
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from trio import TaskStatus
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from .ticktools import (
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from .ticktools import (
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frame_ticks,
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frame_ticks,
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@ -70,6 +71,7 @@ if TYPE_CHECKING:
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_default_delay_s: float = 1.0
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_default_delay_s: float = 1.0
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# TODO: use new `tractor.singleton_acm` API for this!
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class Sampler:
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class Sampler:
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'''
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'''
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Global sampling engine registry.
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Global sampling engine registry.
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@ -79,9 +81,9 @@ class Sampler:
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This non-instantiated type is meant to be a singleton within
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This non-instantiated type is meant to be a singleton within
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a `samplerd` actor-service spawned once by the user wishing to
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a `samplerd` actor-service spawned once by the user wishing to
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time-step-sample (real-time) quote feeds, see
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time-step-sample a (real-time) quote feeds, see
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``.service.maybe_open_samplerd()`` and the below
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`.service.maybe_open_samplerd()` and the below
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``register_with_sampler()``.
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`register_with_sampler()`.
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'''
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'''
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service_nursery: None | trio.Nursery = None
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service_nursery: None | trio.Nursery = None
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@ -375,7 +377,10 @@ async def register_with_sampler(
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assert Sampler.ohlcv_shms
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assert Sampler.ohlcv_shms
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# unblock caller
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# unblock caller
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await ctx.started(set(Sampler.ohlcv_shms.keys()))
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await ctx.started(
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# XXX bc msgpack only allows one array type!
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list(Sampler.ohlcv_shms.keys())
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)
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if open_index_stream:
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if open_index_stream:
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try:
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try:
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@ -419,7 +424,6 @@ async def register_with_sampler(
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async def spawn_samplerd(
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async def spawn_samplerd(
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loglevel: str | None = None,
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loglevel: str | None = None,
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**extra_tractor_kwargs
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**extra_tractor_kwargs
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@ -429,7 +433,10 @@ async def spawn_samplerd(
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update and increment count write and stream broadcasting.
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update and increment count write and stream broadcasting.
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'''
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'''
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from piker.service import Services
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from piker.service import (
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get_service_mngr,
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ServiceMngr,
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)
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dname = 'samplerd'
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dname = 'samplerd'
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log.info(f'Spawning `{dname}`')
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log.info(f'Spawning `{dname}`')
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@ -437,26 +444,33 @@ async def spawn_samplerd(
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# singleton lock creation of ``samplerd`` since we only ever want
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# singleton lock creation of ``samplerd`` since we only ever want
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# one daemon per ``pikerd`` proc tree.
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# one daemon per ``pikerd`` proc tree.
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# TODO: make this built-into the service api?
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# TODO: make this built-into the service api?
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async with Services.locks[dname + '_singleton']:
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mngr: ServiceMngr = get_service_mngr()
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already_started: bool = dname in mngr.service_tasks
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if dname not in Services.service_tasks:
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async with mngr._locks[dname + '_singleton']:
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ctx: Context = await mngr.start_service(
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portal = await Services.actor_n.start_actor(
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daemon_name=dname,
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dname,
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ctx_ep=partial(
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enable_modules=[
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'piker.data._sampling',
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],
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loglevel=loglevel,
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debug_mode=Services.debug_mode, # set by pikerd flag
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**extra_tractor_kwargs
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)
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await Services.start_service_task(
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dname,
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portal,
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register_with_sampler,
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register_with_sampler,
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period_s=1,
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period_s=1,
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sub_for_broadcasts=False,
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sub_for_broadcasts=False,
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),
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debug_mode=mngr.debug_mode, # set by pikerd flag
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# proxy-through to tractor
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enable_modules=[
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'piker.data._sampling',
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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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if not already_started:
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assert (
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ctx
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and
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ctx.portal
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and
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not ctx.cancel_called
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)
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)
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return True
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return True
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@ -889,6 +903,7 @@ async def uniform_rate_send(
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# to consumers which crash or lose network connection.
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# to consumers which crash or lose network connection.
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# I.e. we **DO NOT** want to crash and propagate up to
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# I.e. we **DO NOT** want to crash and propagate up to
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# ``pikerd`` these kinds of errors!
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# ``pikerd`` these kinds of errors!
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trio.EndOfChannel,
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trio.ClosedResourceError,
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trio.ClosedResourceError,
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trio.BrokenResourceError,
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trio.BrokenResourceError,
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ConnectionResetError,
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ConnectionResetError,
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@ -30,7 +30,11 @@ Actor runtime primtives and (distributed) service APIs for,
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=> TODO: maybe to (re)move elsewhere?
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=> TODO: maybe to (re)move elsewhere?
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'''
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'''
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from ._mngr import Services as Services
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from ._mngr import (
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get_service_mngr as get_service_mngr,
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open_service_mngr as open_service_mngr,
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ServiceMngr as ServiceMngr,
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)
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from ._registry import (
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from ._registry import (
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_tractor_kwargs as _tractor_kwargs,
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_tractor_kwargs as _tractor_kwargs,
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_default_reg_addr as _default_reg_addr,
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_default_reg_addr as _default_reg_addr,
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@ -21,7 +21,6 @@
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from __future__ import annotations
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from __future__ import annotations
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import os
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import os
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from typing import (
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from typing import (
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Optional,
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Any,
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Any,
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ClassVar,
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ClassVar,
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)
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)
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@ -30,13 +29,13 @@ from contextlib import (
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)
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)
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import tractor
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import tractor
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import trio
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from ._util import (
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from ._util import (
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get_console_log,
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get_console_log,
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)
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)
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from ._mngr import (
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from ._mngr import (
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Services,
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open_service_mngr,
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ServiceMngr,
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)
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)
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from ._registry import ( # noqa
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from ._registry import ( # noqa
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_tractor_kwargs,
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_tractor_kwargs,
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@ -59,7 +58,7 @@ async def open_piker_runtime(
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registry_addrs: list[tuple[str, int]] = [],
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registry_addrs: list[tuple[str, int]] = [],
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enable_modules: list[str] = [],
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enable_modules: list[str] = [],
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loglevel: Optional[str] = None,
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loglevel: str|None = None,
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# XXX NOTE XXX: you should pretty much never want debug mode
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# XXX NOTE XXX: you should pretty much never want debug mode
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# for data daemons when running in production.
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# for data daemons when running in production.
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@ -69,7 +68,7 @@ async def open_piker_runtime(
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# and spawn the service tree distributed per that.
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# and spawn the service tree distributed per that.
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start_method: str = 'trio',
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start_method: str = 'trio',
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tractor_runtime_overrides: dict | None = None,
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tractor_runtime_overrides: dict|None = None,
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**tractor_kwargs,
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**tractor_kwargs,
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|
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) -> tuple[
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) -> tuple[
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@ -119,6 +118,10 @@ async def open_piker_runtime(
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# spawn other specialized daemons I think?
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# spawn other specialized daemons I think?
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enable_modules=enable_modules,
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enable_modules=enable_modules,
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# TODO: how to configure this?
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# keep it on by default if debug mode is set?
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# maybe_enable_greenback=debug_mode,
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**tractor_kwargs,
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**tractor_kwargs,
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) as actor,
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) as actor,
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@ -167,12 +170,13 @@ async def open_pikerd(
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**kwargs,
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**kwargs,
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) -> Services:
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) -> ServiceMngr:
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'''
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'''
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Start a root piker daemon with an indefinite lifetime.
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Start a root piker daemon actor (aka `pikerd`) with an indefinite
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lifetime.
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A root actor nursery is created which can be used to create and keep
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A root actor-nursery is created which can be used to spawn and
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alive underling services (see below).
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supervise underling service sub-actors (see below).
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'''
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'''
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# NOTE: for the root daemon we always enable the root
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# NOTE: for the root daemon we always enable the root
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@ -199,8 +203,6 @@ async def open_pikerd(
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root_actor,
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root_actor,
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reg_addrs,
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reg_addrs,
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),
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),
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tractor.open_nursery() as actor_nursery,
|
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trio.open_nursery() as service_nursery,
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):
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):
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for addr in reg_addrs:
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for addr in reg_addrs:
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if addr not in root_actor.accept_addrs:
|
if addr not in root_actor.accept_addrs:
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|
@ -209,25 +211,17 @@ async def open_pikerd(
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'Maybe you have another daemon already running?'
|
'Maybe you have another daemon already running?'
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)
|
)
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|
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# assign globally for future daemon/task creation
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mngr: ServiceMngr
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Services.actor_n = actor_nursery
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async with open_service_mngr(
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Services.service_n = service_nursery
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debug_mode=debug_mode,
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Services.debug_mode = debug_mode
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) as mngr:
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|
yield mngr
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try:
|
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yield Services
|
|
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|
|
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finally:
|
|
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# TODO: is this more clever/efficient?
|
|
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# if 'samplerd' in Services.service_tasks:
|
|
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# await Services.cancel_service('samplerd')
|
|
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service_nursery.cancel_scope.cancel()
|
|
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|
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|
|
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# TODO: do we even need this?
|
# TODO: do we even need this?
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# @acm
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# @acm
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# async def maybe_open_runtime(
|
# async def maybe_open_runtime(
|
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# loglevel: Optional[str] = None,
|
# loglevel: str|None = None,
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# **kwargs,
|
# **kwargs,
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|
|
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# ) -> None:
|
# ) -> None:
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|
@ -256,7 +250,7 @@ async def maybe_open_pikerd(
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loglevel: str | None = None,
|
loglevel: str | None = None,
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**kwargs,
|
**kwargs,
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|
|
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) -> tractor._portal.Portal | ClassVar[Services]:
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) -> tractor._portal.Portal | ClassVar[ServiceMngr]:
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'''
|
'''
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If no ``pikerd`` daemon-root-actor can be found start it and
|
If no ``pikerd`` daemon-root-actor can be found start it and
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yield up (we should probably figure out returning a portal to self
|
yield up (we should probably figure out returning a portal to self
|
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|
|
|
@ -49,7 +49,7 @@ from requests.exceptions import (
|
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ReadTimeout,
|
ReadTimeout,
|
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)
|
)
|
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|
|
||||||
from ._mngr import Services
|
from ._mngr import ServiceMngr
|
||||||
from ._util import (
|
from ._util import (
|
||||||
log, # sub-sys logger
|
log, # sub-sys logger
|
||||||
get_console_log,
|
get_console_log,
|
||||||
|
@ -453,7 +453,7 @@ async def open_ahabd(
|
||||||
|
|
||||||
@acm
|
@acm
|
||||||
async def start_ahab_service(
|
async def start_ahab_service(
|
||||||
services: Services,
|
services: ServiceMngr,
|
||||||
service_name: str,
|
service_name: str,
|
||||||
|
|
||||||
# endpoint config passed as **kwargs
|
# endpoint config passed as **kwargs
|
||||||
|
@ -549,7 +549,8 @@ async def start_ahab_service(
|
||||||
log.warning('Failed to cancel root permsed container')
|
log.warning('Failed to cancel root permsed container')
|
||||||
|
|
||||||
except (
|
except (
|
||||||
trio.MultiError,
|
# trio.MultiError,
|
||||||
|
ExceptionGroup,
|
||||||
) as err:
|
) as err:
|
||||||
for subexc in err.exceptions:
|
for subexc in err.exceptions:
|
||||||
if isinstance(subexc, PermissionError):
|
if isinstance(subexc, PermissionError):
|
||||||
|
|
|
@ -26,14 +26,17 @@ from typing import (
|
||||||
from contextlib import (
|
from contextlib import (
|
||||||
asynccontextmanager as acm,
|
asynccontextmanager as acm,
|
||||||
)
|
)
|
||||||
|
from collections import defaultdict
|
||||||
|
|
||||||
import tractor
|
import tractor
|
||||||
|
import trio
|
||||||
|
|
||||||
from ._util import (
|
from ._util import (
|
||||||
log, # sub-sys logger
|
log, # sub-sys logger
|
||||||
)
|
)
|
||||||
from ._mngr import (
|
from ._mngr import (
|
||||||
Services,
|
get_service_mngr,
|
||||||
|
ServiceMngr,
|
||||||
)
|
)
|
||||||
from ._actor_runtime import maybe_open_pikerd
|
from ._actor_runtime import maybe_open_pikerd
|
||||||
from ._registry import find_service
|
from ._registry import find_service
|
||||||
|
@ -41,15 +44,14 @@ from ._registry import find_service
|
||||||
|
|
||||||
@acm
|
@acm
|
||||||
async def maybe_spawn_daemon(
|
async def maybe_spawn_daemon(
|
||||||
|
|
||||||
service_name: str,
|
service_name: str,
|
||||||
service_task_target: Callable,
|
service_task_target: Callable,
|
||||||
|
|
||||||
spawn_args: dict[str, Any],
|
spawn_args: dict[str, Any],
|
||||||
|
|
||||||
loglevel: str | None = None,
|
loglevel: str | None = None,
|
||||||
singleton: bool = False,
|
singleton: bool = False,
|
||||||
|
|
||||||
|
_locks = defaultdict(trio.Lock),
|
||||||
**pikerd_kwargs,
|
**pikerd_kwargs,
|
||||||
|
|
||||||
) -> tractor.Portal:
|
) -> tractor.Portal:
|
||||||
|
@ -67,7 +69,7 @@ async def maybe_spawn_daemon(
|
||||||
'''
|
'''
|
||||||
# serialize access to this section to avoid
|
# serialize access to this section to avoid
|
||||||
# 2 or more tasks racing to create a daemon
|
# 2 or more tasks racing to create a daemon
|
||||||
lock = Services.locks[service_name]
|
lock = _locks[service_name]
|
||||||
await lock.acquire()
|
await lock.acquire()
|
||||||
|
|
||||||
async with find_service(
|
async with find_service(
|
||||||
|
@ -147,21 +149,22 @@ async def spawn_emsd(
|
||||||
"""
|
"""
|
||||||
log.info('Spawning emsd')
|
log.info('Spawning emsd')
|
||||||
|
|
||||||
portal = await Services.actor_n.start_actor(
|
smngr: ServiceMngr = get_service_mngr()
|
||||||
|
portal = await smngr.actor_n.start_actor(
|
||||||
'emsd',
|
'emsd',
|
||||||
enable_modules=[
|
enable_modules=[
|
||||||
'piker.clearing._ems',
|
'piker.clearing._ems',
|
||||||
'piker.clearing._client',
|
'piker.clearing._client',
|
||||||
],
|
],
|
||||||
loglevel=loglevel,
|
loglevel=loglevel,
|
||||||
debug_mode=Services.debug_mode, # set by pikerd flag
|
debug_mode=smngr.debug_mode, # set by pikerd flag
|
||||||
**extra_tractor_kwargs
|
**extra_tractor_kwargs
|
||||||
)
|
)
|
||||||
|
|
||||||
# non-blocking setup of clearing service
|
# non-blocking setup of clearing service
|
||||||
from ..clearing._ems import _setup_persistent_emsd
|
from ..clearing._ems import _setup_persistent_emsd
|
||||||
|
|
||||||
await Services.start_service_task(
|
await smngr.start_service_task(
|
||||||
'emsd',
|
'emsd',
|
||||||
portal,
|
portal,
|
||||||
|
|
||||||
|
|
|
@ -18,16 +18,29 @@
|
||||||
daemon-service management API.
|
daemon-service management API.
|
||||||
|
|
||||||
"""
|
"""
|
||||||
|
from __future__ import annotations
|
||||||
|
from contextlib import (
|
||||||
|
asynccontextmanager as acm,
|
||||||
|
# contextmanager as cm,
|
||||||
|
)
|
||||||
from collections import defaultdict
|
from collections import defaultdict
|
||||||
|
from dataclasses import (
|
||||||
|
dataclass,
|
||||||
|
field,
|
||||||
|
)
|
||||||
|
import functools
|
||||||
|
import inspect
|
||||||
from typing import (
|
from typing import (
|
||||||
Callable,
|
Callable,
|
||||||
Any,
|
Any,
|
||||||
)
|
)
|
||||||
|
|
||||||
import trio
|
import msgspec
|
||||||
from trio_typing import TaskStatus
|
|
||||||
import tractor
|
import tractor
|
||||||
|
import trio
|
||||||
|
from trio import TaskStatus
|
||||||
from tractor import (
|
from tractor import (
|
||||||
|
ActorNursery,
|
||||||
current_actor,
|
current_actor,
|
||||||
ContextCancelled,
|
ContextCancelled,
|
||||||
Context,
|
Context,
|
||||||
|
@ -39,6 +52,130 @@ from ._util import (
|
||||||
)
|
)
|
||||||
|
|
||||||
|
|
||||||
|
# TODO: implement a singleton deco-API for wrapping the below
|
||||||
|
# factory's impl for general actor-singleton use?
|
||||||
|
#
|
||||||
|
# @singleton
|
||||||
|
# async def open_service_mngr(
|
||||||
|
# **init_kwargs,
|
||||||
|
# ) -> ServiceMngr:
|
||||||
|
# '''
|
||||||
|
# Note this function body is invoke IFF no existing singleton instance already
|
||||||
|
# exists in this proc's memory.
|
||||||
|
|
||||||
|
# '''
|
||||||
|
# # setup
|
||||||
|
# yield ServiceMngr(**init_kwargs)
|
||||||
|
# # teardown
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# TODO: singleton factory API instead of a class API
|
||||||
|
@acm
|
||||||
|
async def open_service_mngr(
|
||||||
|
*,
|
||||||
|
debug_mode: bool = False,
|
||||||
|
|
||||||
|
# impl deat which ensures a single global instance
|
||||||
|
_singleton: list[ServiceMngr|None] = [None],
|
||||||
|
**init_kwargs,
|
||||||
|
|
||||||
|
) -> ServiceMngr:
|
||||||
|
'''
|
||||||
|
Open a multi-subactor-as-service-daemon tree supervisor.
|
||||||
|
|
||||||
|
The delivered `ServiceMngr` is a singleton instance for each
|
||||||
|
actor-process and is allocated on first open and never
|
||||||
|
de-allocated unless explicitly deleted by al call to
|
||||||
|
`del_service_mngr()`.
|
||||||
|
|
||||||
|
'''
|
||||||
|
# TODO: factor this an allocation into
|
||||||
|
# a `._mngr.open_service_mngr()` and put in the
|
||||||
|
# once-n-only-once setup/`.__aenter__()` part!
|
||||||
|
# -[ ] how to make this only happen on the `mngr == None` case?
|
||||||
|
# |_ use `.trionics.maybe_open_context()` (for generic
|
||||||
|
# async-with-style-only-once of the factory impl, though
|
||||||
|
# what do we do for the allocation case?
|
||||||
|
# / `.maybe_open_nursery()` (since for this specific case
|
||||||
|
# it's simpler?) to activate
|
||||||
|
async with (
|
||||||
|
tractor.open_nursery() as an,
|
||||||
|
trio.open_nursery() as tn,
|
||||||
|
):
|
||||||
|
# impl specific obvi..
|
||||||
|
init_kwargs.update({
|
||||||
|
'actor_n': an,
|
||||||
|
'service_n': tn,
|
||||||
|
})
|
||||||
|
|
||||||
|
mngr: ServiceMngr|None
|
||||||
|
if (mngr := _singleton[0]) is None:
|
||||||
|
|
||||||
|
log.info('Allocating a new service mngr!')
|
||||||
|
mngr = _singleton[0] = ServiceMngr(**init_kwargs)
|
||||||
|
|
||||||
|
# TODO: put into `.__aenter__()` section of
|
||||||
|
# eventual `@singleton_acm` API wrapper.
|
||||||
|
#
|
||||||
|
# assign globally for future daemon/task creation
|
||||||
|
mngr.actor_n = an
|
||||||
|
mngr.service_n = tn
|
||||||
|
|
||||||
|
else:
|
||||||
|
assert (
|
||||||
|
mngr.actor_n
|
||||||
|
and
|
||||||
|
mngr.service_tn
|
||||||
|
)
|
||||||
|
log.info(
|
||||||
|
'Using extant service mngr!\n\n'
|
||||||
|
f'{mngr!r}\n' # it has a nice `.__repr__()` of services state
|
||||||
|
)
|
||||||
|
|
||||||
|
try:
|
||||||
|
# NOTE: this is a singleton factory impl specific detail
|
||||||
|
# which should be supported in the condensed
|
||||||
|
# `@singleton_acm` API?
|
||||||
|
mngr.debug_mode = debug_mode
|
||||||
|
|
||||||
|
yield mngr
|
||||||
|
finally:
|
||||||
|
# TODO: is this more clever/efficient?
|
||||||
|
# if 'samplerd' in mngr.service_tasks:
|
||||||
|
# await mngr.cancel_service('samplerd')
|
||||||
|
tn.cancel_scope.cancel()
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
def get_service_mngr() -> ServiceMngr:
|
||||||
|
'''
|
||||||
|
Try to get the singleton service-mngr for this actor presuming it
|
||||||
|
has already been allocated using,
|
||||||
|
|
||||||
|
.. code:: python
|
||||||
|
|
||||||
|
async with open_<@singleton_acm(func)>() as mngr`
|
||||||
|
... this block kept open ...
|
||||||
|
|
||||||
|
If not yet allocated raise a `ServiceError`.
|
||||||
|
|
||||||
|
'''
|
||||||
|
# https://stackoverflow.com/a/12627202
|
||||||
|
# https://docs.python.org/3/library/inspect.html#inspect.Signature
|
||||||
|
maybe_mngr: ServiceMngr|None = inspect.signature(
|
||||||
|
open_service_mngr
|
||||||
|
).parameters['_singleton'].default[0]
|
||||||
|
|
||||||
|
if maybe_mngr is None:
|
||||||
|
raise RuntimeError(
|
||||||
|
'Someone must allocate a `ServiceMngr` using\n\n'
|
||||||
|
'`async with open_service_mngr()` beforehand!!\n'
|
||||||
|
)
|
||||||
|
|
||||||
|
return maybe_mngr
|
||||||
|
|
||||||
|
|
||||||
# TODO: we need remote wrapping and a general soln:
|
# TODO: we need remote wrapping and a general soln:
|
||||||
# - factor this into a ``tractor.highlevel`` extension # pack for the
|
# - factor this into a ``tractor.highlevel`` extension # pack for the
|
||||||
# library.
|
# library.
|
||||||
|
@ -46,31 +183,46 @@ from ._util import (
|
||||||
# to the pikerd actor for starting services remotely!
|
# to the pikerd actor for starting services remotely!
|
||||||
# - prolly rename this to ActorServicesNursery since it spawns
|
# - prolly rename this to ActorServicesNursery since it spawns
|
||||||
# new actors and supervises them to completion?
|
# new actors and supervises them to completion?
|
||||||
class Services:
|
@dataclass
|
||||||
|
class ServiceMngr:
|
||||||
|
# class ServiceMngr(msgspec.Struct):
|
||||||
|
'''
|
||||||
|
A multi-subactor-as-service manager.
|
||||||
|
|
||||||
actor_n: tractor._supervise.ActorNursery
|
Spawn, supervise and monitor service/daemon subactors in a SC
|
||||||
|
process tree.
|
||||||
|
|
||||||
|
'''
|
||||||
|
actor_n: ActorNursery
|
||||||
service_n: trio.Nursery
|
service_n: trio.Nursery
|
||||||
debug_mode: bool # tractor sub-actor debug mode flag
|
debug_mode: bool = False # tractor sub-actor debug mode flag
|
||||||
|
|
||||||
service_tasks: dict[
|
service_tasks: dict[
|
||||||
str,
|
str,
|
||||||
tuple[
|
tuple[
|
||||||
trio.CancelScope,
|
trio.CancelScope,
|
||||||
|
Context,
|
||||||
Portal,
|
Portal,
|
||||||
trio.Event,
|
trio.Event,
|
||||||
]
|
]
|
||||||
] = {}
|
] = field(default_factory=dict)
|
||||||
locks = defaultdict(trio.Lock)
|
|
||||||
|
# internal per-service task mutexs
|
||||||
|
_locks = defaultdict(trio.Lock)
|
||||||
|
|
||||||
@classmethod
|
|
||||||
async def start_service_task(
|
async def start_service_task(
|
||||||
self,
|
self,
|
||||||
name: str,
|
name: str,
|
||||||
portal: Portal,
|
portal: Portal,
|
||||||
|
|
||||||
|
# TODO: typevar for the return type of the target and then
|
||||||
|
# use it below for `ctx_res`?
|
||||||
target: Callable,
|
target: Callable,
|
||||||
|
|
||||||
allow_overruns: bool = False,
|
allow_overruns: bool = False,
|
||||||
**ctx_kwargs,
|
**ctx_kwargs,
|
||||||
|
|
||||||
) -> (trio.CancelScope, Context):
|
) -> (trio.CancelScope, Context, Any):
|
||||||
'''
|
'''
|
||||||
Open a context in a service sub-actor, add to a stack
|
Open a context in a service sub-actor, add to a stack
|
||||||
that gets unwound at ``pikerd`` teardown.
|
that gets unwound at ``pikerd`` teardown.
|
||||||
|
@ -83,6 +235,7 @@ class Services:
|
||||||
task_status: TaskStatus[
|
task_status: TaskStatus[
|
||||||
tuple[
|
tuple[
|
||||||
trio.CancelScope,
|
trio.CancelScope,
|
||||||
|
Context,
|
||||||
trio.Event,
|
trio.Event,
|
||||||
Any,
|
Any,
|
||||||
]
|
]
|
||||||
|
@ -90,64 +243,87 @@ class Services:
|
||||||
|
|
||||||
) -> Any:
|
) -> Any:
|
||||||
|
|
||||||
|
# TODO: use the ctx._scope directly here instead?
|
||||||
|
# -[ ] actually what semantics do we expect for this
|
||||||
|
# usage!?
|
||||||
with trio.CancelScope() as cs:
|
with trio.CancelScope() as cs:
|
||||||
|
try:
|
||||||
|
async with portal.open_context(
|
||||||
|
target,
|
||||||
|
allow_overruns=allow_overruns,
|
||||||
|
**ctx_kwargs,
|
||||||
|
|
||||||
async with portal.open_context(
|
) as (ctx, started):
|
||||||
target,
|
|
||||||
allow_overruns=allow_overruns,
|
|
||||||
**ctx_kwargs,
|
|
||||||
|
|
||||||
) as (ctx, first):
|
# unblock once the remote context has started
|
||||||
|
complete = trio.Event()
|
||||||
# unblock once the remote context has started
|
task_status.started((
|
||||||
complete = trio.Event()
|
cs,
|
||||||
task_status.started((cs, complete, first))
|
ctx,
|
||||||
log.info(
|
complete,
|
||||||
f'`pikerd` service {name} started with value {first}'
|
started,
|
||||||
)
|
))
|
||||||
try:
|
log.info(
|
||||||
|
f'`pikerd` service {name} started with value {started}'
|
||||||
|
)
|
||||||
# wait on any context's return value
|
# wait on any context's return value
|
||||||
# and any final portal result from the
|
# and any final portal result from the
|
||||||
# sub-actor.
|
# sub-actor.
|
||||||
ctx_res: Any = await ctx.result()
|
ctx_res: Any = await ctx.wait_for_result()
|
||||||
|
|
||||||
# NOTE: blocks indefinitely until cancelled
|
# NOTE: blocks indefinitely until cancelled
|
||||||
# either by error from the target context
|
# either by error from the target context
|
||||||
# function or by being cancelled here by the
|
# function or by being cancelled here by the
|
||||||
# surrounding cancel scope.
|
# surrounding cancel scope.
|
||||||
return (await portal.result(), ctx_res)
|
return (
|
||||||
except ContextCancelled as ctxe:
|
await portal.wait_for_result(),
|
||||||
canceller: tuple[str, str] = ctxe.canceller
|
ctx_res,
|
||||||
our_uid: tuple[str, str] = current_actor().uid
|
)
|
||||||
if (
|
|
||||||
canceller != portal.channel.uid
|
|
||||||
and
|
|
||||||
canceller != our_uid
|
|
||||||
):
|
|
||||||
log.cancel(
|
|
||||||
f'Actor-service {name} was remotely cancelled?\n'
|
|
||||||
f'remote canceller: {canceller}\n'
|
|
||||||
f'Keeping {our_uid} alive, ignoring sub-actor cancel..\n'
|
|
||||||
)
|
|
||||||
else:
|
|
||||||
raise
|
|
||||||
|
|
||||||
|
except ContextCancelled as ctxe:
|
||||||
|
canceller: tuple[str, str] = ctxe.canceller
|
||||||
|
our_uid: tuple[str, str] = current_actor().uid
|
||||||
|
if (
|
||||||
|
canceller != portal.chan.uid
|
||||||
|
and
|
||||||
|
canceller != our_uid
|
||||||
|
):
|
||||||
|
log.cancel(
|
||||||
|
f'Actor-service `{name}` was remotely cancelled by a peer?\n'
|
||||||
|
|
||||||
|
# TODO: this would be a good spot to use
|
||||||
|
# a respawn feature Bo
|
||||||
|
f'-> Keeping `pikerd` service manager alive despite this inter-peer cancel\n\n'
|
||||||
|
|
||||||
finally:
|
f'cancellee: {portal.chan.uid}\n'
|
||||||
await portal.cancel_actor()
|
f'canceller: {canceller}\n'
|
||||||
complete.set()
|
)
|
||||||
self.service_tasks.pop(name)
|
else:
|
||||||
|
raise
|
||||||
|
|
||||||
cs, complete, first = await self.service_n.start(open_context_in_task)
|
finally:
|
||||||
|
# NOTE: the ctx MUST be cancelled first if we
|
||||||
|
# don't want the above `ctx.wait_for_result()` to
|
||||||
|
# raise a self-ctxc. WHY, well since from the ctx's
|
||||||
|
# perspective the cancel request will have
|
||||||
|
# arrived out-out-of-band at the `Actor.cancel()`
|
||||||
|
# level, thus `Context.cancel_called == False`,
|
||||||
|
# meaning `ctx._is_self_cancelled() == False`.
|
||||||
|
# with trio.CancelScope(shield=True):
|
||||||
|
# await ctx.cancel()
|
||||||
|
await portal.cancel_actor()
|
||||||
|
complete.set()
|
||||||
|
self.service_tasks.pop(name)
|
||||||
|
|
||||||
|
cs, sub_ctx, complete, started = await self.service_n.start(
|
||||||
|
open_context_in_task
|
||||||
|
)
|
||||||
|
|
||||||
# store the cancel scope and portal for later cancellation or
|
# store the cancel scope and portal for later cancellation or
|
||||||
# retstart if needed.
|
# retstart if needed.
|
||||||
self.service_tasks[name] = (cs, portal, complete)
|
self.service_tasks[name] = (cs, sub_ctx, portal, complete)
|
||||||
|
return cs, sub_ctx, started
|
||||||
|
|
||||||
return cs, first
|
|
||||||
|
|
||||||
@classmethod
|
|
||||||
async def cancel_service(
|
async def cancel_service(
|
||||||
self,
|
self,
|
||||||
name: str,
|
name: str,
|
||||||
|
@ -158,8 +334,80 @@ class Services:
|
||||||
|
|
||||||
'''
|
'''
|
||||||
log.info(f'Cancelling `pikerd` service {name}')
|
log.info(f'Cancelling `pikerd` service {name}')
|
||||||
cs, portal, complete = self.service_tasks[name]
|
cs, sub_ctx, portal, complete = self.service_tasks[name]
|
||||||
cs.cancel()
|
|
||||||
|
# cs.cancel()
|
||||||
|
await sub_ctx.cancel()
|
||||||
await complete.wait()
|
await complete.wait()
|
||||||
assert name not in self.service_tasks, \
|
|
||||||
f'Serice task for {name} not terminated?'
|
if name in self.service_tasks:
|
||||||
|
# TODO: custom err?
|
||||||
|
# raise ServiceError(
|
||||||
|
raise RuntimeError(
|
||||||
|
f'Serice task for {name} not terminated?'
|
||||||
|
)
|
||||||
|
|
||||||
|
# assert name not in self.service_tasks, \
|
||||||
|
# f'Serice task for {name} not terminated?'
|
||||||
|
|
||||||
|
async def start_service(
|
||||||
|
self,
|
||||||
|
daemon_name: str,
|
||||||
|
ctx_ep: Callable, # kwargs must `partial`-ed in!
|
||||||
|
|
||||||
|
debug_mode: bool = False,
|
||||||
|
**tractor_actor_kwargs,
|
||||||
|
|
||||||
|
) -> Context:
|
||||||
|
'''
|
||||||
|
Start a "service" task in a new sub-actor (daemon) and manage it's lifetime
|
||||||
|
indefinitely.
|
||||||
|
|
||||||
|
Services can be cancelled/shutdown using `.cancel_service()`.
|
||||||
|
|
||||||
|
'''
|
||||||
|
entry: tuple|None = self.service_tasks.get(daemon_name)
|
||||||
|
if entry:
|
||||||
|
(cs, sub_ctx, portal, complete) = entry
|
||||||
|
return sub_ctx
|
||||||
|
|
||||||
|
if daemon_name not in self.service_tasks:
|
||||||
|
portal = await self.actor_n.start_actor(
|
||||||
|
daemon_name,
|
||||||
|
debug_mode=( # maybe set globally during allocate
|
||||||
|
debug_mode
|
||||||
|
or
|
||||||
|
self.debug_mode
|
||||||
|
),
|
||||||
|
**tractor_actor_kwargs,
|
||||||
|
)
|
||||||
|
ctx_kwargs: dict[str, Any] = {}
|
||||||
|
if isinstance(ctx_ep, functools.partial):
|
||||||
|
ctx_kwargs: dict[str, Any] = ctx_ep.keywords
|
||||||
|
ctx_ep: Callable = ctx_ep.func
|
||||||
|
|
||||||
|
(cs, sub_ctx, started) = await self.start_service_task(
|
||||||
|
daemon_name,
|
||||||
|
portal,
|
||||||
|
ctx_ep,
|
||||||
|
**ctx_kwargs,
|
||||||
|
)
|
||||||
|
|
||||||
|
return sub_ctx
|
||||||
|
|
||||||
|
|
||||||
|
# TODO:
|
||||||
|
# -[ ] factor all the common shit from `.data._sampling`
|
||||||
|
# and `.brokers._daemon` into here / `ServiceMngr`
|
||||||
|
# in terms of allocating the `Portal` as part of the
|
||||||
|
# "service-in-subactor" starting!
|
||||||
|
# -[ ] move to `tractor.hilevel._service`, import and use here!
|
||||||
|
# NOTE: purposely leaks the ref to the mod-scope Bo
|
||||||
|
# import tractor
|
||||||
|
# from tractor.hilevel import (
|
||||||
|
# open_service_mngr,
|
||||||
|
# ServiceMngr,
|
||||||
|
# )
|
||||||
|
# mngr: ServiceMngr|None = None
|
||||||
|
# with tractor.hilevel.open_service_mngr() as mngr:
|
||||||
|
# Services = proxy(mngr)
|
||||||
|
|
|
@ -21,11 +21,13 @@ from typing import (
|
||||||
TYPE_CHECKING,
|
TYPE_CHECKING,
|
||||||
)
|
)
|
||||||
|
|
||||||
|
# TODO: oof, needs to be changed to `httpx`!
|
||||||
import asks
|
import asks
|
||||||
|
|
||||||
if TYPE_CHECKING:
|
if TYPE_CHECKING:
|
||||||
import docker
|
import docker
|
||||||
from ._ahab import DockerContainer
|
from ._ahab import DockerContainer
|
||||||
|
from . import ServiceMngr
|
||||||
|
|
||||||
from ._util import log # sub-sys logger
|
from ._util import log # sub-sys logger
|
||||||
from ._util import (
|
from ._util import (
|
||||||
|
@ -127,7 +129,7 @@ def start_elasticsearch(
|
||||||
|
|
||||||
@acm
|
@acm
|
||||||
async def start_ahab_daemon(
|
async def start_ahab_daemon(
|
||||||
service_mngr: Services,
|
service_mngr: ServiceMngr,
|
||||||
user_config: dict | None = None,
|
user_config: dict | None = None,
|
||||||
loglevel: str | None = None,
|
loglevel: str | None = None,
|
||||||
|
|
||||||
|
|
|
@ -53,7 +53,7 @@ import pendulum
|
||||||
# import purerpc
|
# import purerpc
|
||||||
|
|
||||||
from ..data.feed import maybe_open_feed
|
from ..data.feed import maybe_open_feed
|
||||||
from . import Services
|
from . import ServiceMngr
|
||||||
from ._util import (
|
from ._util import (
|
||||||
log, # sub-sys logger
|
log, # sub-sys logger
|
||||||
get_console_log,
|
get_console_log,
|
||||||
|
@ -233,7 +233,7 @@ def start_marketstore(
|
||||||
|
|
||||||
@acm
|
@acm
|
||||||
async def start_ahab_daemon(
|
async def start_ahab_daemon(
|
||||||
service_mngr: Services,
|
service_mngr: ServiceMngr,
|
||||||
user_config: dict | None = None,
|
user_config: dict | None = None,
|
||||||
loglevel: str | None = None,
|
loglevel: str | None = None,
|
||||||
|
|
||||||
|
|
|
@ -10,7 +10,7 @@ from piker import (
|
||||||
config,
|
config,
|
||||||
)
|
)
|
||||||
from piker.service import (
|
from piker.service import (
|
||||||
Services,
|
get_service_mngr,
|
||||||
)
|
)
|
||||||
from piker.log import get_console_log
|
from piker.log import get_console_log
|
||||||
|
|
||||||
|
@ -129,7 +129,7 @@ async def _open_test_pikerd(
|
||||||
) as service_manager,
|
) as service_manager,
|
||||||
):
|
):
|
||||||
# this proc/actor is the pikerd
|
# this proc/actor is the pikerd
|
||||||
assert service_manager is Services
|
assert service_manager is get_service_mngr()
|
||||||
|
|
||||||
async with tractor.wait_for_actor(
|
async with tractor.wait_for_actor(
|
||||||
'pikerd',
|
'pikerd',
|
||||||
|
|
|
@ -26,7 +26,7 @@ import pytest
|
||||||
import tractor
|
import tractor
|
||||||
from uuid import uuid4
|
from uuid import uuid4
|
||||||
|
|
||||||
from piker.service import Services
|
from piker.service import ServiceMngr
|
||||||
from piker.log import get_logger
|
from piker.log import get_logger
|
||||||
from piker.clearing._messages import (
|
from piker.clearing._messages import (
|
||||||
Order,
|
Order,
|
||||||
|
@ -158,7 +158,7 @@ def load_and_check_pos(
|
||||||
|
|
||||||
|
|
||||||
def test_ems_err_on_bad_broker(
|
def test_ems_err_on_bad_broker(
|
||||||
open_test_pikerd: Services,
|
open_test_pikerd: ServiceMngr,
|
||||||
loglevel: str,
|
loglevel: str,
|
||||||
):
|
):
|
||||||
async def load_bad_fqme():
|
async def load_bad_fqme():
|
||||||
|
|
|
@ -15,7 +15,7 @@ import tractor
|
||||||
|
|
||||||
from piker.service import (
|
from piker.service import (
|
||||||
find_service,
|
find_service,
|
||||||
Services,
|
ServiceMngr,
|
||||||
)
|
)
|
||||||
from piker.data import (
|
from piker.data import (
|
||||||
open_feed,
|
open_feed,
|
||||||
|
@ -44,7 +44,7 @@ def test_runtime_boot(
|
||||||
async def main():
|
async def main():
|
||||||
port = 6666
|
port = 6666
|
||||||
daemon_addr = ('127.0.0.1', port)
|
daemon_addr = ('127.0.0.1', port)
|
||||||
services: Services
|
services: ServiceMngr
|
||||||
|
|
||||||
async with (
|
async with (
|
||||||
open_test_pikerd(
|
open_test_pikerd(
|
||||||
|
|
Loading…
Reference in New Issue