Drop old implementation cruft
Tyler Goodlet
parent
e016884ce0
commit
cbc18f94ec
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@ -1,6 +1,7 @@
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"""
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'''
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Infection apis for ``asyncio`` loops running ``trio`` using guest mode.
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"""
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'''
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import asyncio
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import inspect
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from typing import (
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@ -119,69 +120,20 @@ def _run_asyncio_task(
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async def run_task(
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func: Callable,
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*,
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qsize: int = 2**10,
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_treat_as_stream: bool = False,
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**kwargs,
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) -> Any:
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"""Run an ``asyncio`` async function or generator in a task, return
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or stream the result back to ``trio``.
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"""
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# assert current_actor().is_infected_aio()
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# # ITC (inter task comms)
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# from_trio = asyncio.Queue(qsize) # type: ignore
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# to_trio, from_aio = trio.open_memory_channel(qsize) # type: ignore
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# args = tuple(inspect.getfullargspec(func).args)
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# if getattr(func, '_tractor_steam_function', None):
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# # the assumption is that the target async routine accepts the
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# # send channel then it intends to yield more then one return
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# # value otherwise it would just return ;P
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# _treat_as_stream = True
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# # allow target func to accept/stream results manually by name
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# if 'to_trio' in args:
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# kwargs['to_trio'] = to_trio
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# if 'from_trio' in args:
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# kwargs['from_trio'] = from_trio
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# coro = func(**kwargs)
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# cancel_scope = trio.CancelScope()
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# # start the asyncio task we submitted from trio
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# if inspect.isawaitable(coro):
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# task = asyncio.create_task(run_coro(to_trio, coro))
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# elif inspect.isasyncgen(coro):
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# task = asyncio.create_task(consume_asyncgen(to_trio, coro))
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# else:
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# raise TypeError(f"No support for invoking {coro}")
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# aio_err = None
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# def cancel_trio(task):
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# """Cancel the calling ``trio`` task on error.
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# """
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# nonlocal aio_err
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# aio_err = task.exception()
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# if aio_err:
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# log.exception(f"asyncio task errorred:\n{aio_err}")
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# cancel_scope.cancel()
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# task.add_done_callback(cancel_trio)
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# async iterator
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# if inspect.isasyncgen(coro) or _treat_as_stream:
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# if inspect.isasyncgenfunction(meth) or :
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# streaming ``asyncio`` task
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if _treat_as_stream:
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task, from_aio, to_trio, cs = _run_asyncio_task(
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@ -190,33 +142,10 @@ async def run_task(
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**kwargs,
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)
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# naively expect the mem chan api to do the job
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# of handling cross-framework cancellations / errors
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return from_aio
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# async def stream_results():
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# try:
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# with cancel_scope:
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# # stream values upward
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# async with from_aio:
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# async for item in from_aio:
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# yield item
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# if cancel_scope.cancelled_caught:
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# # always raise from any captured asyncio error
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# if aio_err:
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# raise aio_err
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# except BaseException as err:
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# if aio_err is not None:
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# # always raise from any captured asyncio error
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# raise err from aio_err
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# else:
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# raise
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# finally:
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# # breakpoint()
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# task.cancel()
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# return stream_results()
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# simple async func
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try:
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task, from_aio, to_trio, cs = _run_asyncio_task(
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@ -225,8 +154,6 @@ async def run_task(
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**kwargs,
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)
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# with cancel_scope:
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# async with from_aio:
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# return single value
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with cs:
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return await from_aio.receive()
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@ -238,18 +165,14 @@ async def run_task(
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# Do we need this?
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except Exception as err:
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# await tractor.breakpoint()
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aio_err = from_aio._err
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# try:
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if aio_err is not None:
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# always raise from any captured asyncio error
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raise err from aio_err
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else:
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raise
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# finally:
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# if not task.done():
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# task.cancel()
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except trio.Cancelled:
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if not task.done():
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@ -258,8 +181,26 @@ async def run_task(
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raise
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# async def stream_from_task
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# pass
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# TODO: explicit api for the streaming case where
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# we pull from the mem chan in an async generator?
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# This ends up looking more like our ``Portal.open_stream_from()``
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# NB: code below is untested.
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# @asynccontextmanager
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# async def stream_from_task(
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# target: Callable[Any],
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# **kwargs,
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# ) -> AsyncIterator[Any]:
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# from_aoi = await run_task(target, _treat_as_stream=True, **kwargs)
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# with cancel_scope:
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# # stream values upward
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# async with from_aio:
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# async for item in from_aio:
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# yield item
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def run_as_asyncio_guest(
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