Drop extra newline from log msg

In the particular case of the `Portal.open_context().__aexit__()` frame,
due to usage of `contextlib.asynccontextmanager`, we can't easily hook
into monkeypatching a `__tracebackhide__` set nor catch-n-reraise around
the block exit without defining our own `.__aexit__()` impl. Thus, it's
prolly most sane to do something with an override of
`contextlib._AsyncGeneratorContextManager` or the public exposed
`AsyncContextDecorator` (which uses the former internally right?).

Also fixup some old `._invoke` mod paths in comments and just show
`str(eoc)` in `.open_stream().__aexit__()` terminated-by-EoC log msg
since the `repr()` form won't pprint the IPC msg nicely..

tractor/_context.py

@@ -351,7 +351,7 @@ class Context:
     by the runtime in 2 ways:
      - by entering ``Portal.open_context()`` which is the primary
        public API for any "caller" task or,
-     - by the RPC machinery's `._runtime._invoke()` as a `ctx` arg
+     - by the RPC machinery's `._rpc._invoke()` as a `ctx` arg
        to a remotely scheduled "callee" function.
 
     AND is always constructed using the below ``mk_context()``.
@@ -361,10 +361,10 @@ class Context:
     `trio.Task`s. Contexts are allocated on each side of any task
     RPC-linked msg dialog, i.e. for every request to a remote
     actor from a `Portal`. On the "callee" side a context is
-    always allocated inside ``._runtime._invoke()``.
+    always allocated inside ``._rpc._invoke()``.
 
-    # TODO: more detailed writeup on cancellation, error and
-    # streaming semantics..
+    TODO: more detailed writeup on cancellation, error and
+    streaming semantics..
 
     A context can be cancelled and (possibly eventually restarted) from
     either side of the underlying IPC channel, it can also open task
@@ -1206,7 +1206,9 @@ class Context:
                     # await pause()
                     log.warning(
                         'Stream was terminated by EoC\n\n'
-                        f'{repr(eoc)}\n'
+                        # NOTE: won't show the error <Type> but
+                        # does show txt followed by IPC msg.
+                        f'{str(eoc)}\n'
                     )
 
             finally:
@@ -1303,7 +1305,7 @@ class Context:
             # `._cancel_called == True`.
             not raise_overrun_from_self
             and isinstance(remote_error, RemoteActorError)
-            and remote_error.msgdata['type_str'] == 'StreamOverrun'
+            and remote_error.msgdata['boxed_type_str'] == 'StreamOverrun'
             and tuple(remote_error.msgdata['sender']) == our_uid
         ):
             # NOTE: we set the local scope error to any "self
@@ -1880,6 +1882,19 @@ class Context:
             return False
 
 
+# TODO: exception tb masking by using a manual
+# `.__aexit__()`/.__aenter__()` pair on a type?
+# => currently this is one of the few places we can't easily
+# mask errors - on the exit side of a `Portal.open_context()`..
+# there's # => currently this is one of the few places we can't
+# there's 2 ways to approach it:
+# - manually write an @acm type as per above
+# - use `contextlib.AsyncContextDecorator` to override the default
+#   impl to suppress traceback frames:
+#  * https://docs.python.org/3/library/contextlib.html#contextlib.AsyncContextDecorator
+#  * https://docs.python.org/3/library/contextlib.html#contextlib.ContextDecorator
+# - also we could just override directly the underlying
+#   `contextlib._AsyncGeneratorContextManager`?
 @acm
 async def open_context_from_portal(
     portal: Portal,

tractor/_runtime.py

@@ -140,16 +140,16 @@ class Actor:
     msg_buffer_size: int = 2**6
 
     # nursery placeholders filled in by `async_main()` after fork
-    _root_n: Nursery | None = None
-    _service_n: Nursery | None = None
-    _server_n: Nursery | None = None
+    _root_n: Nursery|None = None
+    _service_n: Nursery|None = None
+    _server_n: Nursery|None = None
 
     # Information about `__main__` from parent
     _parent_main_data: dict[str, str]
-    _parent_chan_cs: CancelScope | None = None
+    _parent_chan_cs: CancelScope|None = None
 
     # syncs for setup/teardown sequences
-    _server_down: trio.Event | None = None
+    _server_down: trio.Event|None = None
 
     # user toggled crash handling (including monkey-patched in
     # `trio.open_nursery()` via `.trionics._supervisor` B)
@@ -178,7 +178,7 @@ class Actor:
         spawn_method: str|None = None,
 
         # TODO: remove!
-        arbiter_addr: tuple[str, int] | None = None,
+        arbiter_addr: tuple[str, int]|None = None,
 
     ) -> None:
         '''
@@ -193,7 +193,7 @@ class Actor:
         )
 
         self._cancel_complete = trio.Event()
-        self._cancel_called_by_remote: tuple[str, tuple] | None = None
+        self._cancel_called_by_remote: tuple[str, tuple]|None = None
         self._cancel_called: bool = False
 
         # retreive and store parent `__main__` data which
@@ -249,11 +249,11 @@ class Actor:
         ] = {}
 
         self._listeners: list[trio.abc.Listener] = []
-        self._parent_chan: Channel | None = None
-        self._forkserver_info: tuple | None = None
+        self._parent_chan: Channel|None = None
+        self._forkserver_info: tuple|None = None
         self._actoruid2nursery: dict[
             tuple[str, str],
-            ActorNursery | None,
+            ActorNursery|None,
         ] = {}  # type: ignore  # noqa
 
         # when provided, init the registry addresses property from
@@ -779,7 +779,7 @@ class Actor:
         #
         # side: str|None = None,
 
-        msg_buffer_size: int | None = None,
+        msg_buffer_size: int|None = None,
         allow_overruns: bool = False,
 
     ) -> Context:
@@ -844,7 +844,7 @@ class Actor:
         kwargs: dict,
 
         # IPC channel config
-        msg_buffer_size: int | None = None,
+        msg_buffer_size: int|None = None,
         allow_overruns: bool = False,
         load_nsf: bool = False,
 
@@ -918,11 +918,11 @@ class Actor:
 
     async def _from_parent(
         self,
-        parent_addr: tuple[str, int] | None,
+        parent_addr: tuple[str, int]|None,
 
     ) -> tuple[
         Channel,
-        list[tuple[str, int]] | None,
+        list[tuple[str, int]]|None,
     ]:
         '''
         Bootstrap this local actor's runtime config from its parent by
@@ -943,7 +943,7 @@ class Actor:
             # Initial handshake: swap names.
             await self._do_handshake(chan)
 
-            accept_addrs: list[tuple[str, int]] | None = None
+            accept_addrs: list[tuple[str, int]]|None = None
             if self._spawn_method == "trio":
                 # Receive runtime state from our parent
                 parent_data: dict[str, Any]
@@ -1007,7 +1007,7 @@ class Actor:
         handler_nursery: Nursery,
         *,
         # (host, port) to bind for channel server
-        listen_sockaddrs: list[tuple[str, int]] | None = None,
+        listen_sockaddrs: list[tuple[str, int]]|None = None,
 
         task_status: TaskStatus[Nursery] = trio.TASK_STATUS_IGNORED,
     ) -> None:
@@ -1464,7 +1464,7 @@ class Actor:
 
 async def async_main(
     actor: Actor,
-    accept_addrs: tuple[str, int] | None = None,
+    accept_addrs: tuple[str, int]|None = None,
 
     # XXX: currently ``parent_addr`` is only needed for the
     # ``multiprocessing`` backend (which pickles state sent to
@@ -1473,7 +1473,7 @@ async def async_main(
     # change this to a simple ``is_subactor: bool`` which will
     # be False when running as root actor and True when as
     # a subactor.
-    parent_addr: tuple[str, int] | None = None,
+    parent_addr: tuple[str, int]|None = None,
     task_status: TaskStatus[None] = trio.TASK_STATUS_IGNORED,
 
 ) -> None:
@@ -1496,7 +1496,7 @@ async def async_main(
     try:
 
         # establish primary connection with immediate parent
-        actor._parent_chan: Channel | None = None
+        actor._parent_chan: Channel|None = None
         if parent_addr is not None:
 
             (
@@ -1795,7 +1795,7 @@ class Arbiter(Actor):
         self,
         name: str,
 
-    ) -> tuple[str, int] | None:
+    ) -> tuple[str, int]|None:
 
         for uid, sockaddr in self._registry.items():
             if name in uid:

tractor/_supervise.py

@@ -583,7 +583,7 @@ async def open_nursery(
     finally:
         msg: str = (
             'Actor-nursery exited\n'
-            f'|_{an}\n\n'
+            f'|_{an}\n'
         )
 
         # shutdown runtime if it was started