Add an async actor cluster spawner prototype

patch-async-enter-all
Tyler Goodlet 2021-10-04 12:02:21 -04:00
parent c2a19c630b
commit 6988e8d3c8
1 changed files with 49 additions and 0 deletions

View File

@ -0,0 +1,49 @@
'''
Actor cluster helpers.
'''
from contextlib import asynccontextmanager as acm
from multiprocessing import cpu_count
from typing import AsyncGenerator, Optional
import trio
import tractor
@acm
async def open_actor_cluster(
modules: list[str],
count: int = cpu_count(),
names: Optional[list[str]] = None,
) -> AsyncGenerator[..., dict[str, tractor.Portal]]:
portals: dict[str, tractor.Portal] = {}
uid = tractor.current_actor().uid
if not names:
suffix = '_'.join(uid)
names = [f'worker_{i}.' + suffix for i in range(count)]
if not len(names) == count:
raise ValueError(
'Number of names is {len(names)} but count it {count}')
async with (
tractor.open_nursery() as an,
trio.open_nursery() as n,
):
for index, key in zip(range(count), names):
async def start(i) -> None:
key = f'worker_{i}.' + '_'.join(uid)
portals[key] = await an.start_actor(
enable_modules=modules,
name=key,
)
n.start_soon(start, index)
assert len(portals) == count
yield portals