Move actor-discovery utils to `.service._registry
Tyler Goodlet
parent
31f2b01c3e
commit
a2d40937a3
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@ -43,89 +43,25 @@ from ..brokers import get_brokermod
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from ._mngr import (
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Services,
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)
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from ._registry import ( # noqa
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_tractor_kwargs,
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_default_reg_addr,
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_default_registry_host,
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_default_registry_port,
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open_registry,
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find_service,
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check_for_service,
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)
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log = get_logger(__name__)
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__all__ = [
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'check_for_service',
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]
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_root_dname = 'pikerd'
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_default_registry_host: str = '127.0.0.1'
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_default_registry_port: int = 6116
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_default_reg_addr: tuple[str, int] = (
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_default_registry_host,
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_default_registry_port,
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)
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# NOTE: this value is set as an actor-global once the first endpoint
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# who is capable, spawns a `pikerd` service tree.
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_registry: Registry | None = None
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class Registry:
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addr: None | tuple[str, int] = None
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# TODO: table of uids to sockaddrs
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peers: dict[
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tuple[str, str],
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tuple[str, int],
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] = {}
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_tractor_kwargs: dict[str, Any] = {}
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@acm
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async def open_registry(
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addr: None | tuple[str, int] = None,
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ensure_exists: bool = True,
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) -> tuple[str, int]:
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global _tractor_kwargs
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actor = tractor.current_actor()
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uid = actor.uid
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if (
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Registry.addr is not None
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and addr
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):
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raise RuntimeError(
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f'`{uid}` registry addr already bound @ {_registry.sockaddr}'
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)
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was_set: bool = False
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if (
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not tractor.is_root_process()
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and Registry.addr is None
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):
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Registry.addr = actor._arb_addr
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if (
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ensure_exists
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and Registry.addr is None
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):
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raise RuntimeError(
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f"`{uid}` registry should already exist bug doesn't?"
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)
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if (
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Registry.addr is None
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):
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was_set = True
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Registry.addr = addr or _default_reg_addr
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_tractor_kwargs['arbiter_addr'] = Registry.addr
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try:
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yield Registry.addr
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finally:
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# XXX: always clear the global addr if we set it so that the
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# next (set of) calls will apply whatever new one is passed
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# in.
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if was_set:
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Registry.addr = None
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def get_tractor_runtime_kwargs() -> dict[str, Any]:
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'''
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@ -415,37 +351,6 @@ _data_mods = [
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]
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@acm
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async def find_service(
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service_name: str,
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) -> tractor.Portal | None:
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async with open_registry() as reg_addr:
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log.info(f'Scanning for service `{service_name}`')
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# attach to existing daemon by name if possible
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async with tractor.find_actor(
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service_name,
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arbiter_sockaddr=reg_addr,
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) as maybe_portal:
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yield maybe_portal
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async def check_for_service(
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service_name: str,
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) -> None | tuple[str, int]:
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'''
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Service daemon "liveness" predicate.
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'''
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async with open_registry(ensure_exists=False) as reg_addr:
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async with tractor.query_actor(
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service_name,
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arbiter_sockaddr=reg_addr,
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) as sockaddr:
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return sockaddr
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@acm
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async def maybe_spawn_daemon(
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@ -0,0 +1,144 @@
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# piker: trading gear for hackers
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# Copyright (C) Tyler Goodlet (in stewardship for pikers)
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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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Inter-actor "discovery" (protocol) layer.
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"""
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from __future__ import annotations
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from contextlib import (
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asynccontextmanager as acm,
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)
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from typing import (
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Any,
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)
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import tractor
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from ..log import (
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get_logger,
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)
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log = get_logger(__name__)
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_default_registry_host: str = '127.0.0.1'
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_default_registry_port: int = 6116
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_default_reg_addr: tuple[str, int] = (
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_default_registry_host,
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_default_registry_port,
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)
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# NOTE: this value is set as an actor-global once the first endpoint
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# who is capable, spawns a `pikerd` service tree.
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_registry: Registry | None = None
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class Registry:
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addr: None | tuple[str, int] = None
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# TODO: table of uids to sockaddrs
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peers: dict[
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tuple[str, str],
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tuple[str, int],
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] = {}
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_tractor_kwargs: dict[str, Any] = {}
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@acm
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async def open_registry(
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addr: None | tuple[str, int] = None,
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ensure_exists: bool = True,
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) -> tuple[str, int]:
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global _tractor_kwargs
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actor = tractor.current_actor()
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uid = actor.uid
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if (
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Registry.addr is not None
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and addr
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):
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raise RuntimeError(
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f'`{uid}` registry addr already bound @ {_registry.sockaddr}'
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)
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was_set: bool = False
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if (
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not tractor.is_root_process()
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and Registry.addr is None
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):
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Registry.addr = actor._arb_addr
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if (
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ensure_exists
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and Registry.addr is None
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):
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raise RuntimeError(
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f"`{uid}` registry should already exist bug doesn't?"
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)
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if (
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Registry.addr is None
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):
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was_set = True
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Registry.addr = addr or _default_reg_addr
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_tractor_kwargs['arbiter_addr'] = Registry.addr
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try:
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yield Registry.addr
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finally:
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# XXX: always clear the global addr if we set it so that the
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# next (set of) calls will apply whatever new one is passed
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# in.
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if was_set:
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Registry.addr = None
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@acm
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async def find_service(
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service_name: str,
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) -> tractor.Portal | None:
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async with open_registry() as reg_addr:
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log.info(f'Scanning for service `{service_name}`')
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# attach to existing daemon by name if possible
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async with tractor.find_actor(
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service_name,
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arbiter_sockaddr=reg_addr,
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) as maybe_portal:
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yield maybe_portal
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async def check_for_service(
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service_name: str,
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) -> None | tuple[str, int]:
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'''
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Service daemon "liveness" predicate.
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'''
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async with open_registry(ensure_exists=False) as reg_addr:
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async with tractor.query_actor(
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service_name,
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arbiter_sockaddr=reg_addr,
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) as sockaddr:
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return sockaddr
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