Get entry points reorg without asyncio compat

This is an edit to factor out changes needed for the `asyncio` in guest mode
integration (which currently isn't tested well) so that later more pertinent
changes (which are tested well) can be rebased off of this branch and
merged into mainline sooner. The *infect_asyncio* branch will need to be
rebased onto this branch as well before merge to mainline.

tractor/__init__.py

@@ -20,7 +20,6 @@ from ._state import current_actor
 from ._exceptions import RemoteActorError, ModuleNotExposed
 from . import msg
 from . import _spawn
-from . import to_asyncio
 
 
 __all__ = [
@@ -36,7 +35,6 @@ __all__ = [
     'RemoteActorError',
     'ModuleNotExposed',
     'msg'
-    'to_asyncio'
 ]
 
 

tractor/_entry.py

@@ -1,9 +1,8 @@
 """
 Process entry points.
 """
-import asyncio
 from functools import partial
-from typing import Tuple, Any, Awaitable
+from typing import Tuple, Any
 
 import trio  # type: ignore
 
@@ -12,52 +11,9 @@ from .log import get_console_log, get_logger
 from . import _state
 
 
-__all__ = ('run',)
-
-
 log = get_logger(__name__)
 
 
-def _asyncio_main(
-    trio_main: Awaitable,
-) -> None:
-    """Entry for an "infected ``asyncio`` actor".
-
-    Uh, oh. :o
-
-    It looks like your event loop has caught a case of the ``trio``s.
-
-    :()
-
-    Don't worry, we've heard you'll barely notice. You might hallucinate
-    a few more propagating errors and feel like your digestion has
-    slowed but if anything get's too bad your parents will know about
-    it.
-
-    :)
-    """
-    async def aio_main(trio_main):
-        loop = asyncio.get_running_loop()
-
-        trio_done_fut = asyncio.Future()
-
-        def trio_done_callback(main_outcome):
-            log.info(f"trio_main finished: {main_outcome!r}")
-            trio_done_fut.set_result(main_outcome)
-
-        # start the infection: run trio on the asyncio loop in "guest mode"
-        log.info(f"Infecting asyncio process with {trio_main}")
-        trio.lowlevel.start_guest_run(
-            trio_main,
-            run_sync_soon_threadsafe=loop.call_soon_threadsafe,
-            done_callback=trio_done_callback,
-        )
-
-        (await trio_done_fut).unwrap()
-
-    asyncio.run(aio_main(trio_main))
-
-
 def _mp_main(
     actor: 'Actor',
     accept_addr: Tuple[str, int],
@@ -90,11 +46,7 @@ def _mp_main(
         parent_addr=parent_addr
     )
     try:
-        if infect_asyncio:
-            actor._infected_aio = True
-            _asyncio_main(trio_main)
-        else:
-            trio.run(trio_main)
+        trio.run(trio_main)
     except KeyboardInterrupt:
         pass  # handle it the same way trio does?
     log.info(f"Actor {actor.uid} terminated")

tractor/_trionics.py

@@ -52,7 +52,6 @@ class ActorNursery:
         rpc_module_paths: List[str] = None,
         loglevel: str = None,  # set log level per subactor
         nursery: trio.Nursery = None,
-        infect_asyncio: bool = False,
     ) -> Portal:
         loglevel = loglevel or self._actor.loglevel or get_loglevel()
 
@@ -81,7 +80,6 @@ class ActorNursery:
                 self.errors,
                 bind_addr,
                 parent_addr,
-                infect_asyncio=infect_asyncio,
             )
         )
 
@@ -93,7 +91,6 @@ class ActorNursery:
         rpc_module_paths: Optional[List[str]] = None,
         statespace: Dict[str, Any] = None,
         loglevel: str = None,  # set log level per subactor
-        infect_asyncio: bool = False,
         **kwargs,  # explicit args to ``fn``
     ) -> Portal:
         """Spawn a new actor, run a lone task, then terminate the actor and
@@ -112,7 +109,6 @@ class ActorNursery:
             loglevel=loglevel,
             # use the run_in_actor nursery
             nursery=self._ria_nursery,
-            infect_asyncio=infect_asyncio,
         )
         # this marks the actor to be cancelled after its portal result
         # is retreived, see logic in `open_nursery()` below.

tractor/to_asyncio.py

@@ -1,70 +0,0 @@
-"""
-Infection apis for ``asyncio`` loops running ``trio`` using guest mode.
-"""
-import asyncio
-import inspect
-from typing import (
-    Any,
-    Callable,
-    AsyncGenerator,
-    Awaitable,
-    Union,
-)
-
-import trio
-
-
-async def _invoke(
-    from_trio,
-    to_trio,
-    coro
-) -> Union[AsyncGenerator, Awaitable]:
-    """Await or stream awaiable object based on type into
-    ``trio`` memory channel.
-    """
-    async def stream_from_gen(c):
-        async for item in c:
-            to_trio.put_nowait(item)
-        to_trio.put_nowait
-
-    async def just_return(c):
-        to_trio.put_nowait(await c)
-
-    if inspect.isasyncgen(coro):
-        return await stream_from_gen(coro)
-    elif inspect.iscoroutine(coro):
-        return await coro
-
-
-# TODO: make this some kind of tractor.to_asyncio.run()
-async def run(
-    func: Callable,
-    qsize: int = 2**10,
-    **kwargs,
-) -> Any:
-    """Run an ``asyncio`` async function or generator in a task, return
-    or stream the result back to ``trio``.
-    """
-    # ITC (inter task comms)
-    from_trio = asyncio.Queue(qsize)
-    to_trio, from_aio = trio.open_memory_channel(qsize)
-
-    # allow target func to accept/stream results manually
-    kwargs['to_trio'] = to_trio
-    kwargs['from_trio'] = to_trio
-
-    coro = func(**kwargs)
-
-    # start the asyncio task we submitted from trio
-    # TODO: try out ``anyio`` asyncio based tg here
-    asyncio.create_task(_invoke(from_trio, to_trio, coro))
-
-    # determine return type async func vs. gen
-    if inspect.isasyncgen(coro):
-        await from_aio.get()
-    elif inspect.iscoroutine(coro):
-        async def gen():
-            async for tick in from_aio:
-                yield tuple(tick)
-
-        return gen()