Add timeout around inf-streamer suite

Since with the new actorc injection seems to be hanging?
Not sure what exactly the issue is but likely races again
during teardown between the `.run_in_actor()` remote-exc capture
and any actorc after the `portal.cancel()`..

Also tossed in a bp to figure out why actorcs aren't actually showing
outside the `trio.run()`..?

examples/advanced_faults/ipc_failure_during_stream.py

@@ -17,6 +17,7 @@ from tractor import (
     MsgStream,
     _testing,
     trionics,
+    TransportClosed,
 )
 import trio
 import pytest
@@ -208,12 +209,16 @@ async def main(
                         # TODO: is this needed or no?
                         raise
 
-                    except trio.ClosedResourceError:
+                    except (
+                        trio.ClosedResourceError,
+                        TransportClosed,
+                    ) as _tpt_err:
                         # NOTE: don't send if we already broke the
                         # connection to avoid raising a closed-error
                         # such that we drop through to the ctl-c
                         # mashing by user.
-                        await trio.sleep(0.01)
+                        with trio.CancelScope(shield=True):
+                            await trio.sleep(0.01)
 
                     # timeout: int = 1
                     # with trio.move_on_after(timeout) as cs:
@@ -247,6 +252,7 @@ async def main(
                     await stream.send(i)
                     pytest.fail('stream not closed?')
                 except (
+                    TransportClosed,
                     trio.ClosedResourceError,
                     trio.EndOfChannel,
                 ) as send_err:

examples/debugging/multi_nested_subactors_error_up_through_nurseries.py

@@ -21,12 +21,12 @@ async def breakpoint_forever():
 async def spawn_until(depth=0):
     """"A nested nursery that triggers another ``NameError``.
     """
-    async with tractor.open_nursery() as n:
+    async with tractor.open_nursery() as an:
         if depth < 1:
 
-            await n.run_in_actor(breakpoint_forever)
+            await an.run_in_actor(breakpoint_forever)
 
-            p = await n.run_in_actor(
+            p = await an.run_in_actor(
                 name_error,
                 name='name_error'
             )
@@ -38,7 +38,7 @@ async def spawn_until(depth=0):
             # recusrive call to spawn another process branching layer of
             # the tree
             depth -= 1
-            await n.run_in_actor(
+            await an.run_in_actor(
                 spawn_until,
                 depth=depth,
                 name=f'spawn_until_{depth}',

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1769018530,
+        "narHash": "sha256-MJ27Cy2NtBEV5tsK+YraYr2g851f3Fl1LpNHDzDX15c=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "88d3861acdd3d2f0e361767018218e51810df8a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,70 @@
+# An "impure" template thx to `pyproject.nix`,
+# https://pyproject-nix.github.io/pyproject.nix/templates.html#impure
+# https://github.com/pyproject-nix/pyproject.nix/blob/master/templates/impure/flake.nix
+{
+  description = "An impure overlay (w dev-shell) using `uv`";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+
+  outputs =
+    { nixpkgs, ... }:
+    let
+      inherit (nixpkgs) lib;
+      forAllSystems = lib.genAttrs lib.systems.flakeExposed;
+    in
+    {
+      devShells = forAllSystems (
+        system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+
+          # XXX NOTE XXX, for now we overlay specific pkgs via
+          # a major-version-pinned-`cpython`
+          cpython = "python313";
+          venv_dir = "py313";
+          pypkgs = pkgs."${cpython}Packages";
+        in
+        {
+          default = pkgs.mkShell {
+
+            packages = [
+              # XXX, ensure sh completions activate!
+              pkgs.bashInteractive
+              pkgs.bash-completion
+
+              # XXX, on nix(os), use pkgs version to avoid
+              # build/sys-sh-integration issues
+              pkgs.ruff
+
+              pkgs.uv
+              pkgs.${cpython}# ?TODO^ how to set from `cpython` above?
+            ];
+
+            shellHook = ''
+              # unmask to debug **this** dev-shell-hook
+              # set -e
+
+              # link-in c++ stdlib for various AOT-ext-pkgs (numpy, etc.)
+              LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib:$LD_LIBRARY_PATH"
+
+              export LD_LIBRARY_PATH
+
+              # RUNTIME-SETTINGS
+              # ------ uv ------
+              # - always use the ./py313/ venv-subdir
+              # - sync env with all extras
+              export UV_PROJECT_ENVIRONMENT=${venv_dir}
+              uv sync --dev --all-extras
+
+              # ------ TIPS ------
+              # NOTE, to launch the py-venv installed `xonsh` (like @goodboy)
+              # run the `nix develop` cmd with,
+              # >> nix develop -c uv run xonsh
+            '';
+          };
+        }
+      );
+    };
+}

pyproject.toml

@@ -53,22 +53,33 @@ dependencies = [
 
 [dependency-groups]
 dev = [
-  # test suite
-  # TODO: maybe some of these layout choices?
-  # https://docs.pytest.org/en/8.0.x/explanation/goodpractices.html#choosing-a-test-layout-import-rules
-  "pytest>=8.3.5",
-  "pexpect>=4.9.0,<5",
+  {include-group = 'devx'},
+  {include-group = 'testing'},
+  {include-group = 'repl'},
+]
+devx = [
   # `tractor.devx` tooling
   "greenback>=1.2.1,<2",
   "stackscope>=0.2.2,<0.3",
   # ^ requires this?
   "typing-extensions>=4.14.1",
-
+]
+testing = [
+  # test suite
+  # TODO: maybe some of these layout choices?
+  # https://docs.pytest.org/en/8.0.x/explanation/goodpractices.html#choosing-a-test-layout-import-rules
+  "pytest>=8.3.5",
+  "pexpect>=4.9.0,<5",
+]
+repl = [
   "pyperclip>=1.9.0",
   "prompt-toolkit>=3.0.50",
   "xonsh>=0.19.2",
   "psutil>=7.0.0",
 ]
+lint = [
+  "ruff>=0.9.6"
+]
 # TODO, add these with sane versions; were originally in
 # `requirements-docs.txt`..
 # docs = [

tests/conftest.py

@@ -65,7 +65,11 @@ def loglevel(request):
     import tractor
     orig = tractor.log._default_loglevel
     level = tractor.log._default_loglevel = request.config.option.loglevel
-    tractor.log.get_console_log(level)
+    log = tractor.log.get_console_log(
+        level=level,
+        name='tractor',  # <- enable root logger
+    )
+    log.info(f'Test-harness logging level: {level}\n')
     yield level
     tractor.log._default_loglevel = orig
 

tests/devx/conftest.py

@@ -4,6 +4,7 @@
 '''
 from __future__ import annotations
 import time
+import signal
 from typing import (
     Callable,
     TYPE_CHECKING,
@@ -34,7 +35,10 @@ if TYPE_CHECKING:
 
 # a fn that sub-instantiates a `pexpect.spawn()`
 # and returns it.
-type PexpectSpawner = Callable[[str], pty_spawn.spawn]
+type PexpectSpawner = Callable[
+    [str],
+    pty_spawn.spawn,
+]
 
 
 @pytest.fixture
@@ -66,12 +70,15 @@ def spawn(
         import os
         os.environ['PYTHON_COLORS'] = '0'
 
+    spawned: PexpectSpawner|None = None
+
     def _spawn(
         cmd: str,
         **mkcmd_kwargs,
     ) -> pty_spawn.spawn:
+        nonlocal spawned
         unset_colors()
-        return testdir.spawn(
+        spawned = testdir.spawn(
             cmd=mk_cmd(
                 cmd,
                 **mkcmd_kwargs,
@@ -81,9 +88,35 @@ def spawn(
             # ^TODO? get `pytest` core to expose underlying
             # `pexpect.spawn()` stuff?
         )
+        return spawned
 
     # such that test-dep can pass input script name.
-    return _spawn  # the `PexpectSpawner`, type alias.
+    yield _spawn  # the `PexpectSpawner`, type alias.
+
+    if (
+        spawned
+        and
+        (ptyproc := spawned.ptyproc)
+    ):
+        start: float = time.time()
+        timeout: float = 5
+        while (
+            ptyproc.isalive()
+            and
+            (
+                (_time_took := (time.time() - start))
+                 <
+                 timeout
+            )
+        ):
+            ptyproc.kill(signal.SIGINT)
+            time.sleep(0.01)
+
+        if ptyproc.isalive():
+            ptyproc.kill(signal.SIGKILL)
+
+    # TODO? ensure we've cleaned up any UDS-paths?
+    # breakpoint()
 
 
 @pytest.fixture(
@@ -109,7 +142,11 @@ def ctlc(
                 'https://github.com/goodboy/tractor/issues/320'
             )
 
-        if mark.name == 'ctlcs_bish':
+        if (
+            mark.name == 'ctlcs_bish'
+            and
+            use_ctlc
+        ):
             pytest.skip(
                 f'Test {node} prolly uses something from the stdlib (namely `asyncio`..)\n'
                 f'The test and/or underlying example script can *sometimes* run fine '

tests/devx/test_debugger.py

@@ -709,10 +709,41 @@ def test_multi_nested_subactors_error_through_nurseries(
     child = spawn('multi_nested_subactors_error_up_through_nurseries')
 
     # timed_out_early: bool = False
+    at_least_one: list[str] = [
+        "bdb.BdbQuit",
 
-    for send_char in itertools.cycle(['c', 'q']):
+        # leaf subs, which actually raise in "user code"
+        "src_uid=('breakpoint_forever'",
+        "src_uid=('name_error'",
+
+        # 2nd layer subs
+        "src_uid=('spawn_until_1'",
+        "src_uid=('spawn_until_2'",
+        "src_uid=('spawn_until_3'",
+        "relay_uid=('spawn_until_0'",
+
+        # 1st layer subs
+        "src_uid=('spawner0'",
+        "src_uid=('spawner1'",
+    ]
+
+    for i, send_char in enumerate(
+        itertools.cycle(['c', 'q'])
+    ):
         try:
             child.expect(PROMPT)
+
+            for patt in at_least_one.copy():
+                if in_prompt_msg(
+                    child,
+                    [patt],
+                ):
+                    print(
+                        f'Found patt in prompt {i}\n'
+                        f'patt: {patt!r}\n'
+                    )
+                    at_least_one.remove(patt)
+
             child.sendline(send_char)
             time.sleep(0.01)
 
@@ -721,27 +752,15 @@ def test_multi_nested_subactors_error_through_nurseries(
 
     assert_before(
         child,
-        [ # boxed source errors
-            "NameError: name 'doggypants' is not defined",
+        [
+            # boxed source errors should show in final
+            # post-prompt tb to console.
             "tractor._exceptions.RemoteActorError:",
-            "('name_error'",
-            "bdb.BdbQuit",
+            "NameError: name 'doggypants' is not defined",
 
-            # first level subtrees
-            # "tractor._exceptions.RemoteActorError: ('spawner0'",
-            "src_uid=('spawner0'",
-
-            # "tractor._exceptions.RemoteActorError: ('spawner1'",
-
-            # propagation of errors up through nested subtrees
-            # "tractor._exceptions.RemoteActorError: ('spawn_until_0'",
-            # "tractor._exceptions.RemoteActorError: ('spawn_until_1'",
-            # "tractor._exceptions.RemoteActorError: ('spawn_until_2'",
-            # ^-NOTE-^ old RAE repr, new one is below with a field
-            # showing the src actor's uid.
-            "src_uid=('spawn_until_0'",
-            "relay_uid=('spawn_until_1'",
-            "src_uid=('spawn_until_2'",
+            # TODO? once we get more pedantic with `relay_uid` should
+            # prolly include all actor-IDs we expect to see in final
+            # tb?
         ]
     )
 
@@ -1138,7 +1157,10 @@ def test_ctxep_pauses_n_maybe_ipc_breaks(
                 ['peer IPC channel closed abruptly?',
                  'another task closed this fd',
                  'Debug lock request was CANCELLED?',
-                 "TransportClosed: 'MsgpackUDSStream' was already closed locally ?",]
+                 "'MsgpackUDSStream' was already closed locally?",
+                 "TransportClosed: 'MsgpackUDSStream' was already closed 'by peer'?",
+                 # ?TODO^? match depending on `tpt_proto(s)`?
+                ]
 
                 # XXX races on whether these show/hit?
                  # 'Failed to REPl via `_pause()` You called `tractor.pause()` from an already cancelled scope!',

tests/test_actor_nursery.py

@@ -0,0 +1,98 @@
+'''
+Basic `ActorNursery` operations and closure semantics,
+- basic remote error collection,
+- basic multi-subactor cancellation.
+
+'''
+# import os
+# import signal
+# import platform
+# import time
+# from itertools import repeat
+
+import pytest
+import trio
+import tractor
+from tractor._exceptions import ActorCancelled
+# from tractor._testing import (
+#     tractor_test,
+# )
+# from .conftest import no_windows
+
+
+@pytest.mark.parametrize(
+    'num_subs',
+    [
+        1,
+        3,
+    ]
+)
+def test_one_cancels_all(
+    start_method: str,
+    loglevel: str,
+    debug_mode: bool,
+    num_subs: int,
+):
+    '''
+    Verify that ifa a single error bubbles to the an-scope the
+    nursery will be cancelled (just like in `trio`); this is a
+    one-cancels-all style strategy and are only supervision policy
+    at the moment.
+
+    '''
+    async def main():
+        try:
+            rte = RuntimeError('Uh oh something bad in parent')
+            async with tractor.open_nursery(
+                start_method=start_method,
+                loglevel=loglevel,
+                debug_mode=debug_mode,
+            ) as an:
+
+                # spawn the same number of deamon actors which should be cancelled
+                dactor_portals = []
+                for i in range(num_subs):
+                    name: str= f'sub_{i}'
+                    ptl: tractor.Portal = await an.start_actor(
+                        name=name,
+                        enable_modules=[__name__],
+                    )
+                    dactor_portals.append(ptl)
+
+                    # wait for booted
+                    async with tractor.wait_for_actor(name):
+                        print(f'{name!r} is up.')
+
+                # simulate uncaught exc
+                raise rte
+
+            # should error here with a ``RemoteActorError`` or ``MultiError``
+
+        except BaseExceptionGroup as _beg:
+            beg = _beg
+
+            # ?TODO? why can't we do `is` on beg?
+            assert (
+                beg.exceptions
+                ==
+                an.maybe_error.exceptions
+            )
+
+            assert len(beg.exceptions) == (
+                num_subs
+                +
+                1  # rte from root
+            )
+
+            # all subactors should have been implicitly
+            # `Portal.cancel_actor()`ed.
+            excs = list(beg.exceptions)
+            excs.remove(rte)
+            for exc in excs:
+                assert isinstance(exc, ActorCancelled)
+
+            assert an._scope_error is rte
+            assert not an._children
+            assert an.cancelled is True
+
+    trio.run(main)

tests/test_advanced_faults.py

@@ -98,7 +98,8 @@ def test_ipc_channel_break_during_stream(
         expect_final_exc = TransportClosed
 
     mod: ModuleType = import_path(
-        examples_dir() / 'advanced_faults'
+        examples_dir()
+        / 'advanced_faults'
         / 'ipc_failure_during_stream.py',
         root=examples_dir(),
         consider_namespace_packages=False,
@@ -113,8 +114,9 @@ def test_ipc_channel_break_during_stream(
     if (
         # only expect EoC if trans is broken on the child side,
         ipc_break['break_child_ipc_after'] is not False
+        and
         # AND we tell the child to call `MsgStream.aclose()`.
-        and pre_aclose_msgstream
+        pre_aclose_msgstream
     ):
         # expect_final_exc = trio.EndOfChannel
         # ^XXX NOPE! XXX^ since now `.open_stream()` absorbs this
@@ -160,7 +162,8 @@ def test_ipc_channel_break_during_stream(
         ipc_break['break_child_ipc_after'] is not False
         and (
             ipc_break['break_parent_ipc_after']
-            > ipc_break['break_child_ipc_after']
+            >
+            ipc_break['break_child_ipc_after']
         )
     ):
         if pre_aclose_msgstream:
@@ -248,8 +251,15 @@ def test_ipc_channel_break_during_stream(
     # get raw instance from pytest wrapper
     value = excinfo.value
     if isinstance(value, ExceptionGroup):
-        excs = value.exceptions
-        assert len(excs) == 1
+        excs: tuple[Exception] = value.exceptions
+        assert (
+            len(excs) <= 2
+            and
+            all(
+                isinstance(exc, TransportClosed)
+                for exc in excs
+            )
+        )
         final_exc = excs[0]
         assert isinstance(final_exc, expect_final_exc)
 

tests/test_cancellation.py

@@ -11,6 +11,9 @@ from itertools import repeat
 import pytest
 import trio
 import tractor
+from tractor._exceptions import (
+    ActorCancelled,
+)
 from tractor._testing import (
     tractor_test,
 )
@@ -124,7 +127,10 @@ def test_multierror(
         ) as nursery:
 
             await nursery.run_in_actor(assert_err, name='errorer1')
-            portal2 = await nursery.run_in_actor(assert_err, name='errorer2')
+            portal2 = await nursery.run_in_actor(
+                assert_err,
+                name='errorer2',
+            )
 
             # get result(s) from main task
             try:
@@ -137,7 +143,15 @@ def test_multierror(
         # here we should get a ``BaseExceptionGroup`` containing exceptions
         # from both subactors
 
-    with pytest.raises(BaseExceptionGroup):
+    with pytest.raises(
+        expected_exception=(
+            tractor.RemoteActorError,
+
+            # ?TODO, should it be this??
+            # like `trio`'s strict egs?
+            BaseExceptionGroup,
+        ),
+    ):
         trio.run(main)
 
 
@@ -233,8 +247,9 @@ async def stream_forever():
 
 
 @tractor_test
-async def test_cancel_infinite_streamer(start_method):
-
+async def test_cancel_infinite_streamer(
+    start_method: str,
+):
     # stream for at most 1 seconds
     with (
         trio.fail_after(4),
@@ -291,6 +306,7 @@ async def test_some_cancels_all(
     num_actors_and_errs: tuple,
     start_method: str,
     loglevel: str,
+    debug_mode: bool,
 ):
     '''
     Verify a subset of failed subactors causes all others in
@@ -306,68 +322,81 @@ async def test_some_cancels_all(
         ria_func,
         da_func,
     ) = num_actors_and_errs
-    try:
-        async with tractor.open_nursery() as an:
+    with trio.fail_after(
+        3
+        if not debug_mode
+        else 999
+    ):
+        try:
+            async with tractor.open_nursery() as an:
 
-            # spawn the same number of deamon actors which should be cancelled
-            dactor_portals = []
-            for i in range(num_actors):
-                dactor_portals.append(await an.start_actor(
-                    f'deamon_{i}',
-                    enable_modules=[__name__],
-                ))
+                # spawn the same number of deamon actors which should be cancelled
+                dactor_portals = []
+                for i in range(num_actors):
+                    dactor_portals.append(await an.start_actor(
+                        f'deamon_{i}',
+                        enable_modules=[__name__],
+                    ))
 
-            func, kwargs = ria_func
-            riactor_portals = []
-            for i in range(num_actors):
-                # start actor(s) that will fail immediately
-                riactor_portals.append(
-                    await an.run_in_actor(
-                        func,
-                        name=f'actor_{i}',
-                        **kwargs
+                func, kwargs = ria_func
+                riactor_portals = []
+                for i in range(num_actors):
+                    # start actor(s) that will fail immediately
+                    riactor_portals.append(
+                        await an.run_in_actor(
+                            func,
+                            name=f'actor_{i}',
+                            **kwargs
+                        )
                     )
-                )
 
-            if da_func:
-                func, kwargs, expect_error = da_func
-                for portal in dactor_portals:
-                    # if this function fails then we should error here
-                    # and the nursery should teardown all other actors
-                    try:
-                        await portal.run(func, **kwargs)
+                if da_func:
+                    func, kwargs, expect_error = da_func
+                    for portal in dactor_portals:
+                        # if this function fails then we should error here
+                        # and the nursery should teardown all other actors
+                        try:
+                            await portal.run(func, **kwargs)
 
-                    except tractor.RemoteActorError as err:
-                        assert err.boxed_type == err_type
-                        # we only expect this first error to propogate
-                        # (all other daemons are cancelled before they
-                        # can be scheduled)
-                        num_actors = 1
-                        # reraise so nursery teardown is triggered
-                        raise
+                        except tractor.RemoteActorError as err:
+                            assert err.boxed_type == err_type
+                            # we only expect this first error to propogate
+                            # (all other daemons are cancelled before they
+                            # can be scheduled)
+                            num_actors = 1
+                            # reraise so nursery teardown is triggered
+                            raise
+                        else:
+                            if expect_error:
+                                pytest.fail(
+                                    "Deamon call should fail at checkpoint?")
+
+            # should error here with a ``RemoteActorError`` or ``MultiError``
+
+        except first_err as _err:
+            err = _err
+
+            if isinstance(err, BaseExceptionGroup):
+
+                assert len(err.exceptions) == num_actors
+                for exc in err.exceptions:
+
+                    # TODO, figure out why these aren't being set?
+                    if isinstance(exc, ActorCancelled):
+                        breakpoint()
+
+                    if isinstance(exc, tractor.RemoteActorError):
+                        assert exc.boxed_type == err_type
                     else:
-                        if expect_error:
-                            pytest.fail(
-                                "Deamon call should fail at checkpoint?")
+                        assert isinstance(exc, trio.Cancelled)
 
-        # should error here with a ``RemoteActorError`` or ``MultiError``
+            elif isinstance(err, tractor.RemoteActorError):
+                assert err.boxed_type == err_type
 
-    except first_err as _err:
-        err = _err
-        if isinstance(err, BaseExceptionGroup):
-            assert len(err.exceptions) == num_actors
-            for exc in err.exceptions:
-                if isinstance(exc, tractor.RemoteActorError):
-                    assert exc.boxed_type == err_type
-                else:
-                    assert isinstance(exc, trio.Cancelled)
-        elif isinstance(err, tractor.RemoteActorError):
-            assert err.boxed_type == err_type
-
-        assert an.cancelled is True
-        assert not an._children
-    else:
-        pytest.fail("Should have gotten a remote assertion error?")
+            assert an.cancelled is True
+            assert not an._children
+        else:
+            pytest.fail("Should have gotten a remote assertion error?")
 
 
 async def spawn_and_error(breadth, depth) -> None:

tests/test_inter_peer_cancellation.py

@@ -11,12 +11,13 @@ import trio
 import tractor
 from tractor import (  # typing
     Actor,
-    current_actor,
-    open_nursery,
-    Portal,
     Context,
     ContextCancelled,
+    MsgStream,
+    Portal,
     RemoteActorError,
+    current_actor,
+    open_nursery,
 )
 from tractor._testing import (
     # tractor_test,
@@ -796,8 +797,8 @@ async def basic_echo_server(
 
 ) -> None:
     '''
-    Just the simplest `MsgStream` echo server which resays what
-    you told it but with its uid in front ;)
+    Just the simplest `MsgStream` echo server which resays what you
+    told it but with its uid in front ;)
 
     '''
     actor: Actor = tractor.current_actor()
@@ -966,9 +967,14 @@ async def tell_little_bro(
 
     caller: str = '',
     err_after: float|None = None,
-    rng_seed: int = 50,
+    rng_seed: int = 100,
+    # NOTE, ensure ^ is large enough (on fast hw anyway)
+    # to ensure the peer cancel req arrives before the
+    # echoing dialog does itself Bp
 ):
     # contact target actor, do a stream dialog.
+    lb: Portal
+    echo_ipc: MsgStream
     async with (
         tractor.wait_for_actor(
             name=actor_name
@@ -983,7 +989,6 @@ async def tell_little_bro(
                 else None
             ),
         ) as (sub_ctx, first),
-
         sub_ctx.open_stream() as echo_ipc,
     ):
         actor: Actor = current_actor()
@@ -994,6 +999,7 @@ async def tell_little_bro(
                 i,
             )
             await echo_ipc.send(msg)
+            await trio.sleep(0.001)
             resp = await echo_ipc.receive()
             print(
                 f'{caller} => {actor_name}: {msg}\n'
@@ -1006,6 +1012,9 @@ async def tell_little_bro(
             assert sub_uid != uid
             assert _i == i
 
+    # XXX, usually should never get here!
+    # await tractor.pause()
+
 
 @pytest.mark.parametrize(
     'raise_client_error',
@@ -1020,6 +1029,9 @@ def test_peer_spawns_and_cancels_service_subactor(
     raise_client_error: str,
     reg_addr: tuple[str, int],
     raise_sub_spawn_error_after: float|None,
+    loglevel: str,
+    # ^XXX, set to 'warning' to see masked-exc warnings
+    # that may transpire during actor-nursery teardown.
 ):
     # NOTE: this tests for the modden `mod wks open piker` bug
     # discovered as part of implementing workspace ctx
@@ -1049,6 +1061,7 @@ def test_peer_spawns_and_cancels_service_subactor(
             # NOTE: to halt the peer tasks on ctxc, uncomment this.
             debug_mode=debug_mode,
             registry_addrs=[reg_addr],
+            loglevel=loglevel,
         ) as an:
             server: Portal = await an.start_actor(
                 (server_name := 'spawn_server'),

tests/test_log_sys.py

@@ -0,0 +1,185 @@
+'''
+`tractor.log`-wrapping unit tests.
+
+'''
+from pathlib import Path
+import shutil
+from types import ModuleType
+
+import pytest
+import tractor
+from tractor import (
+    _code_load,
+    log,
+)
+
+
+def test_root_pkg_not_duplicated_in_logger_name():
+    '''
+    When both `pkg_name` and `name` are passed and they have
+    a common `<root_name>.< >` prefix, ensure that it is not
+    duplicated in the child's `StackLevelAdapter.name: str`.
+
+    '''
+    project_name: str = 'pylib'
+    pkg_path: str = 'pylib.subpkg.mod'
+
+    assert not tractor.current_actor(
+        err_on_no_runtime=False,
+    )
+    proj_log = log.get_logger(
+        pkg_name=project_name,
+        mk_sublog=False,
+    )
+
+    sublog = log.get_logger(
+        pkg_name=project_name,
+        name=pkg_path,
+    )
+
+    assert proj_log is not sublog
+    assert sublog.name.count(proj_log.name) == 1
+    assert 'mod' not in sublog.name
+
+
+def test_implicit_mod_name_applied_for_child(
+    testdir: pytest.Pytester,
+    loglevel: str,
+):
+    '''
+    Verify that when `.log.get_logger(pkg_name='pylib')` is called
+    from a given sub-mod from within the `pylib` pkg-path, we
+    implicitly set the equiv of `name=__name__` from the caller's
+    module.
+
+    '''
+    # tractor.log.get_console_log(level=loglevel)
+    proj_name: str = 'snakelib'
+    mod_code: str = (
+        f'import tractor\n'
+        f'\n'
+        # if you need to trace `testdir` stuff @ import-time..
+        # f'breakpoint()\n'
+        f'log = tractor.log.get_logger(pkg_name="{proj_name}")\n'
+    )
+
+    # create a sub-module for each pkg layer
+    _lib = testdir.mkpydir(proj_name)
+    pkg: Path = Path(_lib)
+    pkg_init_mod: Path = pkg / "__init__.py"
+    pkg_init_mod.write_text(mod_code)
+
+    subpkg: Path = pkg / 'subpkg'
+    subpkg.mkdir()
+    subpkgmod: Path = subpkg / "__init__.py"
+    subpkgmod.touch()
+    subpkgmod.write_text(mod_code)
+
+    _submod: Path = testdir.makepyfile(
+        _mod=mod_code,
+    )
+
+    pkg_submod = pkg / 'mod.py'
+    pkg_subpkg_submod = subpkg / 'submod.py'
+    shutil.copyfile(
+        _submod,
+        pkg_submod,
+    )
+    shutil.copyfile(
+        _submod,
+        pkg_subpkg_submod,
+    )
+    testdir.chdir()
+    # NOTE, to introspect the py-file-module-layout use (in .xsh
+    # syntax): `ranger @str(testdir)`
+
+    # XXX NOTE, once the "top level" pkg mod has been
+    # imported, we can then use `import` syntax to
+    # import it's sub-pkgs and modules.
+    subpkgmod: ModuleType = _code_load.load_module_from_path(
+        Path(pkg / '__init__.py'),
+        module_name=proj_name,
+    )
+
+    pkg_root_log = log.get_logger(
+        pkg_name=proj_name,
+        mk_sublog=False,
+    )
+    # the top level pkg-mod, created just now,
+    # by above API call.
+    assert pkg_root_log.name == proj_name
+    assert not pkg_root_log.logger.getChildren()
+    #
+    # ^TODO! test this same output but created via a `get_logger()`
+    # call in the `snakelib.__init__py`!!
+
+    # NOTE, the pkg-level "init mod" should of course
+    # have the same name as the package ns-path.
+    import snakelib as init_mod
+    assert init_mod.log.name == proj_name
+
+    # NOTE, a first-pkg-level sub-module should only
+    # use the package-name since the leaf-node-module
+    # will be included in log headers by default.
+    from snakelib import mod
+    assert mod.log.name == proj_name
+
+    from snakelib import subpkg
+    assert (
+        subpkg.log.name
+        ==
+        subpkg.__package__ 
+        ==
+        f'{proj_name}.subpkg'
+    )
+
+    from snakelib.subpkg import submod
+    assert (
+        submod.log.name
+        ==
+        submod.__package__ 
+        ==
+        f'{proj_name}.subpkg'
+    )
+
+    sub_logs = pkg_root_log.logger.getChildren()
+    assert len(sub_logs) == 1  # only one nested sub-pkg module
+    assert submod.log.logger in sub_logs
+
+
+# TODO, moar tests against existing feats:
+# ------ - ------
+# - [ ] color settings?
+# - [ ] header contents like,
+#   - actor + thread + task names from various conc-primitives,
+# - [ ] `StackLevelAdapter` extensions,
+#   - our custom levels/methods: `transport|runtime|cance|pdb|devx`
+# - [ ] custom-headers support?
+#
+
+# TODO, test driven dev of new-ideas/long-wanted feats,
+# ------ - ------
+# - [ ] https://github.com/goodboy/tractor/issues/244
+#  - [ ] @catern mentioned using a sync / deterministic sys
+#       and in particular `svlogd`?
+#       |_ https://smarden.org/runit/svlogd.8
+
+# - [ ] using adapter vs. filters?
+#    - https://stackoverflow.com/questions/60691759/add-information-to-every-log-message-in-python-logging/61830838#61830838
+
+# - [ ] `.at_least_level()` optimization which short circuits wtv
+#      `logging` is doing behind the scenes when the level filters
+#      the emission..?
+
+# - [ ] use of `.log.get_console_log()` in subactors and the
+#    subtleties of ensuring it actually emits from a subproc.
+
+# - [ ] this idea of activating per-subsys emissions with some
+#    kind of `.name` filter passed to the runtime or maybe configured
+#    via the root `StackLevelAdapter`?
+
+# - [ ] use of `logging.dict.dictConfig()` to simplify the impl
+#      of any of ^^ ??
+#    - https://stackoverflow.com/questions/7507825/where-is-a-complete-example-of-logging-config-dictconfig
+#    - https://docs.python.org/3/library/logging.config.html#configuration-dictionary-schema
+#    - https://docs.python.org/3/library/logging.config.html#logging.config.dictConfig

tests/test_multi_program.py

@@ -1,8 +1,13 @@
 """
 Multiple python programs invoking the runtime.
 """
+from __future__ import annotations
 import platform
+import subprocess
 import time
+from typing import (
+    TYPE_CHECKING,
+)
 
 import pytest
 import trio
@@ -10,14 +15,29 @@ import tractor
 from tractor._testing import (
     tractor_test,
 )
+from tractor import (
+    current_actor,
+    _state,
+    Actor,
+    Context,
+    Portal,
+)
 from .conftest import (
     sig_prog,
     _INT_SIGNAL,
     _INT_RETURN_CODE,
 )
 
+if TYPE_CHECKING:
+    from tractor.msg import Aid
+    from tractor._addr import (
+        UnwrappedAddress,
+    )
 
-def test_abort_on_sigint(daemon):
+
+def test_abort_on_sigint(
+    daemon: subprocess.Popen,
+):
     assert daemon.returncode is None
     time.sleep(0.1)
     sig_prog(daemon, _INT_SIGNAL)
@@ -30,8 +50,11 @@ def test_abort_on_sigint(daemon):
 
 
 @tractor_test
-async def test_cancel_remote_arbiter(daemon, reg_addr):
-    assert not tractor.current_actor().is_arbiter
+async def test_cancel_remote_arbiter(
+    daemon: subprocess.Popen,
+    reg_addr: UnwrappedAddress,
+):
+    assert not current_actor().is_arbiter
     async with tractor.get_registry(reg_addr) as portal:
         await portal.cancel_actor()
 
@@ -45,24 +68,106 @@ async def test_cancel_remote_arbiter(daemon, reg_addr):
             pass
 
 
-def test_register_duplicate_name(daemon, reg_addr):
-
+def test_register_duplicate_name(
+    daemon: subprocess.Popen,
+    reg_addr: UnwrappedAddress,
+):
     async def main():
-
         async with tractor.open_nursery(
             registry_addrs=[reg_addr],
-        ) as n:
+        ) as an:
 
-            assert not tractor.current_actor().is_arbiter
+            assert not current_actor().is_arbiter
 
-            p1 = await n.start_actor('doggy')
-            p2 = await n.start_actor('doggy')
+            p1 = await an.start_actor('doggy')
+            p2 = await an.start_actor('doggy')
 
             async with tractor.wait_for_actor('doggy') as portal:
                 assert portal.channel.uid in (p2.channel.uid, p1.channel.uid)
 
-            await n.cancel()
+            await an.cancel()
 
-    # run it manually since we want to start **after**
-    # the other "daemon" program
+    # XXX, run manually since we want to start this root **after**
+    # the other "daemon" program with it's own root.
+    trio.run(main)
+
+
+@tractor.context
+async def get_root_portal(
+    ctx: Context,
+):
+    '''
+    Connect back to the root actor manually (using `._discovery` API)
+    and ensure it's contact info is the same as our immediate parent.
+
+    '''
+    sub: Actor = current_actor()
+    rtvs: dict = _state._runtime_vars
+    raddrs: list[UnwrappedAddress] = rtvs['_root_addrs']
+
+    # await tractor.pause()
+    # XXX, in case the sub->root discovery breaks you might need
+    # this (i know i did Xp)!!
+    # from tractor.devx import mk_pdb
+    # mk_pdb().set_trace()
+
+    assert (
+        len(raddrs) == 1
+        and
+        list(sub._parent_chan.raddr.unwrap()) in raddrs
+    )
+
+    # connect back to our immediate parent which should also
+    # be the actor-tree's root.
+    from tractor._discovery import get_root
+    ptl: Portal
+    async with get_root() as ptl:
+        root_aid: Aid = ptl.chan.aid
+        parent_ptl: Portal = current_actor().get_parent()
+        assert (
+            root_aid.name == 'root'
+            and
+            parent_ptl.chan.aid == root_aid
+        )
+        await ctx.started()
+
+
+def test_non_registrar_spawns_child(
+    daemon: subprocess.Popen,
+    reg_addr: UnwrappedAddress,
+    loglevel: str,
+    debug_mode: bool,
+):
+    '''
+    Ensure a non-regristar (serving) root actor can spawn a sub and
+    that sub can connect back (manually) to it's rent that is the
+    root without issue.
+
+    More or less this audits the global contact info in
+    `._state._runtime_vars`.
+
+    '''
+    async def main():
+        async with tractor.open_nursery(
+            registry_addrs=[reg_addr],
+            loglevel=loglevel,
+            debug_mode=debug_mode,
+        ) as an:
+
+            actor: Actor = tractor.current_actor()
+            assert not actor.is_registrar
+            sub_ptl: Portal = await an.start_actor(
+                name='sub',
+                enable_modules=[__name__],
+            )
+
+            async with sub_ptl.open_context(
+                get_root_portal,
+            ) as (ctx, _):
+                print('Waiting for `sub` to connect back to us..')
+
+            await an.cancel()
+
+    # XXX, run manually since we want to start this root **after**
+    # the other "daemon" program with it's own root.
     trio.run(main)

tests/test_resource_cache.py

@@ -17,9 +17,8 @@ from tractor.log import (
     get_console_log,
     get_logger,
 )
-log = get_logger(__name__)
-
 
+log = get_logger()
 
 _resource: int = 0
 

tractor/_addr.py

@@ -37,7 +37,7 @@ from .ipc._uds import UDSAddress
 if TYPE_CHECKING:
     from ._runtime import Actor
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 # TODO, maybe breakout the netns key to a struct?
@@ -259,6 +259,8 @@ def wrap_address(
 
         case _:
             # import pdbp; pdbp.set_trace()
+            # from tractor.devx import mk_pdb
+            # mk_pdb().set_trace()
             raise TypeError(
                 f'Can not wrap unwrapped-address ??\n'
                 f'type(addr): {type(addr)!r}\n'

tractor/_code_load.py

@@ -0,0 +1,48 @@
+# tractor: structured concurrent "actors".
+# Copyright 2018-eternity Tyler Goodlet.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+'''
+(Hot) coad (re-)load utils for python.
+
+'''
+import importlib
+from pathlib import Path
+import sys
+from types import ModuleType
+
+# ?TODO, move this into internal libs?
+# -[ ] we already use it in `modden.config._pymod` as well
+def load_module_from_path(
+    path: Path,
+    module_name: str|None = None,
+) -> ModuleType:
+    '''
+    Taken from SO,
+    https://stackoverflow.com/a/67208147
+
+    which is based on stdlib docs,
+    https://docs.python.org/3/library/importlib.html#importing-a-source-file-directly
+
+    '''
+    module_name = module_name or path.stem
+    spec = importlib.util.spec_from_file_location(
+        module_name,
+        str(path),
+    )
+    module = importlib.util.module_from_spec(spec)
+    sys.modules[module_name] = module
+    spec.loader.exec_module(module)
+    return module

tractor/_context.py

@@ -70,6 +70,7 @@ from ._exceptions import (
     MsgTypeError,
     RemoteActorError,
     StreamOverrun,
+    TransportClosed,
     pack_from_raise,
     unpack_error,
 )
@@ -113,7 +114,7 @@ if TYPE_CHECKING:
         CallerInfo,
     )
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 class Unresolved:
@@ -2391,16 +2392,18 @@ async def open_context_from_portal(
             case trio.Cancelled():
                 logmeth = log.cancel
                 cause: str = 'cancelled'
+                msg: str = (
+                    f'ctx {ctx.side!r}-side {cause!r} with,\n'
+                    f'{ctx.repr_outcome()!r}\n'
+                )
 
             # XXX explicitly report on any non-graceful-taskc cases
             case _:
                 cause: str = 'errored'
                 logmeth = log.exception
+                msg: str = f'ctx {ctx.side!r}-side {cause!r} with,\n'
 
-        logmeth(
-            f'ctx {ctx.side!r}-side {cause!r} with,\n'
-            f'{ctx.repr_outcome()!r}\n'
-        )
+        logmeth(msg)
 
         if debug_mode():
             # async with debug.acquire_debug_lock(portal.actor.uid):
@@ -2426,10 +2429,7 @@ async def open_context_from_portal(
             try:
                 # await pause(shield=True)
                 await ctx.cancel()
-            except (
-                trio.BrokenResourceError,
-                trio.ClosedResourceError,
-            ):
+            except TransportClosed:
                 log.warning(
                     'IPC connection for context is broken?\n'
                     f'task: {ctx.cid}\n'

tractor/_discovery.py

@@ -27,7 +27,7 @@ from typing import (
 )
 from contextlib import asynccontextmanager as acm
 
-from tractor.log import get_logger
+from .log import get_logger
 from .trionics import (
     gather_contexts,
     collapse_eg,
@@ -53,7 +53,7 @@ if TYPE_CHECKING:
     from ._runtime import Actor
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 @acm
@@ -91,10 +91,13 @@ async def get_registry(
 
 
 @acm
-async def get_root(
-    **kwargs,
-) -> AsyncGenerator[Portal, None]:
+async def get_root(**kwargs) -> AsyncGenerator[Portal, None]:
+    '''
+    Deliver the current actor's "root process" actor (yes in actor
+    and proc tree terms) by delivering a `Portal` from the spawn-time
+    provided contact address.
 
+    '''
     # TODO: rename mailbox to `_root_maddr` when we finally
     # add and impl libp2p multi-addrs?
     addr = _runtime_vars['_root_mailbox']
@@ -193,6 +196,11 @@ async def maybe_open_portal(
     addr: UnwrappedAddress,
     name: str,
 ):
+    '''
+    Open a `Portal` to the actor serving @ `addr` or `None` if no
+    peer can be contacted or found.
+
+    '''
     async with query_actor(
         name=name,
         regaddr=addr,
@@ -217,7 +225,7 @@ async def find_actor(
     raise_on_none: bool = False,
 
 ) -> AsyncGenerator[
-    Portal | list[Portal] | None,
+    Portal|list[Portal]|None,
     None,
 ]:
     '''
@@ -259,6 +267,7 @@ async def find_actor(
         collapse_eg(),
         gather_contexts(
             mngrs=maybe_portals,
+            # tn=tn,  # ?TODO, helps to pass rent tn here?
         ) as portals,
     ):
         # log.runtime(

tractor/_entry.py

@@ -50,7 +50,7 @@ if TYPE_CHECKING:
     from ._spawn import SpawnMethodKey
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 def _mp_main(
@@ -72,11 +72,15 @@ def _mp_main(
     spawn_ctx: mp.context.BaseContext = try_set_start_method(start_method)
     assert spawn_ctx
 
+    # XXX, enable root log at level
     if actor.loglevel is not None:
         log.info(
-            f'Setting loglevel for {actor.uid} to {actor.loglevel}'
+            f'Setting loglevel for {actor.uid} to {actor.loglevel!r}'
+        )
+        get_console_log(
+            level=actor.loglevel,
+            name='tractor',
         )
-        get_console_log(actor.loglevel)
 
     # TODO: use scops headers like for `trio` below!
     # (well after we libify it maybe..)
@@ -126,8 +130,12 @@ def _trio_main(
         parent_addr=parent_addr
     )
 
+    # XXX, enable root log at level
     if actor.loglevel is not None:
-        get_console_log(actor.loglevel)
+        get_console_log(
+            level=actor.loglevel,
+            name='tractor',
+        )
         log.info(
             f'Starting `trio` subactor from parent @ '
             f'{parent_addr}\n'

tractor/_exceptions.py

@@ -46,6 +46,7 @@ from msgspec import (
 from tractor._state import current_actor
 from tractor.log import get_logger
 from tractor.msg import (
+    Aid,
     Error,
     PayloadMsg,
     MsgType,
@@ -479,9 +480,10 @@ class RemoteActorError(Exception):
 
     @property
     def relay_uid(self) -> tuple[str, str]|None:
-        return tuple(
-            self._ipc_msg.relay_path[-1]
-        )
+        if msg := self._ipc_msg:
+            return tuple(
+                msg.relay_path[-1]
+            )
 
     @property
     def src_uid(self) -> tuple[str, str]|None:
@@ -521,7 +523,8 @@ class RemoteActorError(Exception):
         for key in fields:
             if (
                 key == 'relay_uid'
-                and not self.is_inception()
+                and
+                not self.is_inception()
             ):
                 continue
 
@@ -534,6 +537,13 @@ class RemoteActorError(Exception):
                     None,
                 )
             )
+            if (
+                key == 'canceller'
+                and
+                isinstance(val, Aid)
+            ):
+                val: str = val.reprol(sin_uuid=False)
+
             # TODO: for `.relay_path` on multiline?
             # if not isinstance(val, str):
             #     val_str = pformat(val)
@@ -623,12 +633,22 @@ class RemoteActorError(Exception):
         # IFF there is an embedded traceback-str we always
         # draw the ascii-box around it.
         body: str = ''
-        if tb_str := self.tb_str:
-            fields: str = self._mk_fields_str(
-                _body_fields
-                +
-                self.extra_body_fields,
-            )
+        fields: str = self._mk_fields_str(
+            _body_fields
+            +
+            self.extra_body_fields,
+        )
+
+        tb_str: str = (
+            self.tb_str
+            #
+            # ^TODO? what to use instead? if anything?
+            # -[ ] ensure the `.message` doesn't show up 2x in output ya?
+            # -[ ] ._message isn't really right?
+            # or
+            # self._message
+        )
+        if tb_str:
             from tractor.devx import (
                 pformat_boxed_tb,
             )
@@ -640,7 +660,7 @@ class RemoteActorError(Exception):
                 # just after <Type(
                 #             |___ ..
                 tb_body_indent=1,
-                boxer_header=self.relay_uid,
+                boxer_header=self.relay_uid or '-',
             )
 
         # !TODO, it'd be nice to import these top level without
@@ -713,6 +733,10 @@ class RemoteActorError(Exception):
 
 class ContextCancelled(RemoteActorError):
     '''
+    IPC context cancellation signal/msg.
+
+    Often reffed with the short-hand: "ctxc".
+
     Inter-actor task context was cancelled by either a call to
     ``Portal.cancel_actor()`` or ``Context.cancel()``.
 
@@ -737,8 +761,8 @@ class ContextCancelled(RemoteActorError):
 
         - (simulating) an IPC transport network outage
         - a (malicious) pkt sent specifically to cancel an actor's
-          runtime non-gracefully without ensuring ongoing RPC tasks are 
-          incrementally cancelled as is done with:
+          runtime non-gracefully without ensuring ongoing RPC tasks
+          are incrementally cancelled as is done with:
           `Actor`
           |_`.cancel()`
           |_`.cancel_soon()`
@@ -759,6 +783,59 @@ class ContextCancelled(RemoteActorError):
     # src_actor_uid = canceller
 
 
+class ActorCancelled(ContextCancelled):
+    '''
+    Runtime-layer cancellation signal/msg.
+
+    Indicates a "graceful interrupt" of the machinery scheduled by
+    the py-proc's `trio.run()`.
+
+    Often reffed with the short-hand: "actorc".
+
+    Raised from within `an: ActorNursery` (via an `ExceptionGroup`)
+    when an actor has been "process wide" cancel-called using any of,
+
+    - `ActorNursery.cancel()`
+    - `Portal.cancel_actor()`
+
+    **and** that cancel request was part of a "non graceful" cancel
+    condition.
+
+    That is, whenever an exception is to be raised outside an `an`
+    scope-block due to some error raised-in/relayed-to that scope. In
+    such cases for every subactor which was cancelledand subsequently
+    ( and according to the `an`'s supervision strat ) this is
+    normally raised per subactor portal.
+
+    '''
+    @property
+    def canceller(self) -> Aid:
+        '''
+        Return the (maybe) `Actor.aid: Aid` for the requesting-author
+        of this actorc.
+
+        Emit a warning msg when `.canceller` has not been set.
+
+        See additional relevant notes in
+        `ContextCancelled.canceller`.
+
+        '''
+        value: tuple[str, str]|None
+        if msg := self._ipc_msg:
+            value = msg.canceller
+        else:
+            value = self._extra_msgdata['canceller']
+
+        if value:
+            return value
+
+        log.warning(
+            'IPC Context cancelled without a requesting actor?\n'
+            'Maybe the IPC transport ended abruptly?\n\n'
+            f'{self}'
+        )
+
+
 class MsgTypeError(
     RemoteActorError,
 ):

tractor/_portal.py

@@ -69,7 +69,7 @@ from ._streaming import (
 if TYPE_CHECKING:
     from ._runtime import Actor
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 class Portal:
@@ -329,18 +329,7 @@ class Portal:
             # if we get here some weird cancellation case happened
             return False
 
-        except (
-            # XXX, should never really get raised unless we aren't
-            # wrapping them in the below type by mistake?
-            #
-            # Leaving the catch here for now until we're very sure
-            # all the cases (for various tpt protos) have indeed been
-            # re-wrapped ;p
-            trio.ClosedResourceError,
-            trio.BrokenResourceError,
-
-            TransportClosed,
-        ) as tpt_err:
+        except TransportClosed as tpt_err:
             ipc_borked_report: str = (
                 f'IPC for actor already closed/broken?\n\n'
                 f'\n'

tractor/_root.py

@@ -88,7 +88,8 @@ async def maybe_block_bp(
     bp_blocked: bool
     if (
         debug_mode
-        and maybe_enable_greenback
+        and
+        maybe_enable_greenback
         and (
             maybe_mod := await debug.maybe_init_greenback(
                 raise_not_found=False,
@@ -289,10 +290,12 @@ async def open_root_actor(
             for uw_addr in uw_reg_addrs
         ]
 
-        loglevel = (
+        loglevel: str = (
             loglevel
-            or log._default_loglevel
-        ).upper()
+            or
+            log._default_loglevel
+        )
+        loglevel: str = loglevel.upper()
 
         if (
             debug_mode
@@ -323,7 +326,10 @@ async def open_root_actor(
             )
 
         assert loglevel
-        _log = log.get_console_log(loglevel)
+        _log = log.get_console_log(
+            level=loglevel,
+            name='tractor',
+        )
         assert _log
 
         # TODO: factor this into `.devx._stackscope`!!
@@ -380,10 +386,13 @@ async def open_root_actor(
                     addr,
                 )
 
-        trans_bind_addrs: list[UnwrappedAddress] = []
+        tpt_bind_addrs: list[
+            Address  # `Address.get_random()` case
+            |UnwrappedAddress  # registrar case `= uw_reg_addrs`
+        ] = []
 
-        # Create a new local root-actor instance which IS NOT THE
-        # REGISTRAR
+        # ------ NON-REGISTRAR ------
+        # create a new root-actor instance.
         if ponged_addrs:
             if ensure_registry:
                 raise RuntimeError(
@@ -410,12 +419,21 @@ async def open_root_actor(
             # XXX INSTEAD, bind random addrs using the same tpt
             # proto.
             for addr in ponged_addrs:
-                trans_bind_addrs.append(
+                tpt_bind_addrs.append(
+                    # XXX, these are `Address` NOT `UnwrappedAddress`.
+                    #
+                    # NOTE, in the case of posix/berkley socket
+                    # protos we allocate port=0 such that the system
+                    # allocates a random value at bind time; this
+                    # happens in the `.ipc.*` stack's backend.
                     addr.get_random(
                         bindspace=addr.bindspace,
                     )
                 )
 
+        # ------ REGISTRAR ------
+        # create a new "registry providing" root-actor instance.
+        #
         # Start this local actor as the "registrar", aka a regular
         # actor who manages the local registry of "mailboxes" of
         # other process-tree-local sub-actors.
@@ -424,7 +442,7 @@ async def open_root_actor(
             # following init steps are taken:
             # - the tranport layer server is bound to each addr
             #   pair defined in provided registry_addrs, or the default.
-            trans_bind_addrs = uw_reg_addrs
+            tpt_bind_addrs = uw_reg_addrs
 
             # - it is normally desirable for any registrar to stay up
             #   indefinitely until either all registered (child/sub)
@@ -444,20 +462,10 @@ async def open_root_actor(
                 enable_modules=enable_modules,
             )
             # XXX, in case the root actor runtime was actually run from
-            # `tractor.to_asyncio.run_as_asyncio_guest()` and NOt
+            # `tractor.to_asyncio.run_as_asyncio_guest()` and NOT
             # `.trio.run()`.
             actor._infected_aio = _state._runtime_vars['_is_infected_aio']
 
-        # NOTE, only set the loopback addr for the
-        # process-tree-global "root" mailbox since all sub-actors
-        # should be able to speak to their root actor over that
-        # channel.
-        raddrs: list[Address] = _state._runtime_vars['_root_addrs']
-        raddrs.extend(trans_bind_addrs)
-        # TODO, remove once we have also removed all usage;
-        # eventually all (root-)registry apis should expect > 1 addr.
-        _state._runtime_vars['_root_mailbox'] = raddrs[0]
-
         # Start up main task set via core actor-runtime nurseries.
         try:
             # assign process-local actor
@@ -494,14 +502,39 @@ async def open_root_actor(
                 # "actor runtime" primitives are SC-compat and thus all
                 # transitively spawned actors/processes must be as
                 # well.
-                await root_tn.start(
+                accept_addrs: list[UnwrappedAddress]
+                reg_addrs: list[UnwrappedAddress]
+                (
+                    accept_addrs,
+                    reg_addrs,
+                ) = await root_tn.start(
                     partial(
                         _runtime.async_main,
                         actor,
-                        accept_addrs=trans_bind_addrs,
+                        accept_addrs=tpt_bind_addrs,
                         parent_addr=None
                     )
                 )
+                # NOTE, only set a local-host addr (i.e. like
+                # `lo`-loopback for TCP) for the process-tree-global
+                # "root"-process (its tree-wide "mailbox") since all
+                # sub-actors should be able to speak to their root
+                # actor over that channel.
+                #
+                # ?TODO, per-OS non-network-proto alt options?
+                # -[ ] on linux we should be able to always use UDS?
+                #
+                raddrs: list[UnwrappedAddress] = _state._runtime_vars['_root_addrs']
+                raddrs.extend(
+                    accept_addrs,
+                )
+                # TODO, remove once we have also removed all usage;
+                # eventually all (root-)registry apis should expect > 1 addr.
+                _state._runtime_vars['_root_mailbox'] = raddrs[0]
+                # if 'chart' in actor.aid.name:
+                #     from tractor.devx import mk_pdb
+                #     mk_pdb().set_trace()
+
                 try:
                     yield actor
                 except (
@@ -583,6 +616,13 @@ async def open_root_actor(
             ):
                 _state._runtime_vars['_debug_mode'] = False
 
+            # !XXX, clear ALL prior contact info state, this is MEGA
+            # important if you are opening the runtime multiple times
+            # from the same parent process (like in our test
+            # harness)!
+            _state._runtime_vars['_root_addrs'].clear()
+            _state._runtime_vars['_root_mailbox'] = None
+
             _state._current_actor = None
             _state._last_actor_terminated = actor
 

tractor/_rpc.py

@@ -284,6 +284,15 @@ async def _errors_relayed_via_ipc(
     try:
         yield  # run RPC invoke body
 
+    # NOTE, never REPL any pseudo-expected tpt-disconnect.
+    except TransportClosed as err:
+        rpc_err = err
+        log.warning(
+            f'Tpt disconnect during remote-exc relay due to,\n'
+            f'{err!r}\n'
+        )
+        raise err
+
     # box and ship RPC errors for wire-transit via
     # the task's requesting parent IPC-channel.
     except (
@@ -327,10 +336,15 @@ async def _errors_relayed_via_ipc(
                 # recovery logic - the only case is some kind of
                 # strange bug in our transport layer itself? Going
                 # to keep this open ended for now.
-                log.debug(
-                    'RPC task crashed, attempting to enter debugger\n'
-                    f'|_{ctx}'
-                )
+
+                if _state.debug_mode():
+                    log.exception(
+                        f'RPC task crashed!\n'
+                        f'Attempting to enter debugger\n'
+                        f'\n'
+                        f'{ctx}'
+                    )
+
                 entered_debug = await debug._maybe_enter_pm(
                     err,
                     api_frame=inspect.currentframe(),
@@ -419,7 +433,7 @@ async def _errors_relayed_via_ipc(
             # cancel scope will not have been inserted yet
             if is_rpc:
                 log.warning(
-                    'RPC task likely errored or cancelled before start?\n'
+                    'RPC task likely crashed or cancelled before start?\n'
                     f'|_{ctx._task}\n'
                     f'  >> {ctx.repr_rpc}\n'
                 )
@@ -862,9 +876,9 @@ async def _invoke(
                 )
 
             logmeth(
-                f'{message}\n'
+                f'{message}'
                 f'\n'
-                f'{descr_str}\n'
+                f'{descr_str}'
             )
 
 
@@ -900,6 +914,11 @@ async def try_ship_error_to_remote(
 
         # XXX NOTE XXX in SC terms this is one of the worst things
         # that can happen and provides for a 2-general's dilemma..
+        #
+        # FURHTER, we should never really have to handle these
+        # lowlevel excs from `trio` since the `Channel.send()` layers
+        # downward should be mostly wrapping such cases in a
+        # tpt-closed; the `.critical()` usage is warranted.
         except (
             trio.ClosedResourceError,
             trio.BrokenResourceError,

tractor/_runtime.py

@@ -147,6 +147,8 @@ def get_mod_nsps2fps(mod_ns_paths: list[str]) -> dict[str, str]:
     return nsp2fp
 
 
+_bp = False
+
 class Actor:
     '''
     The fundamental "runtime" concurrency primitive.
@@ -181,6 +183,14 @@ class Actor:
     def is_registrar(self) -> bool:
         return self.is_arbiter
 
+    @property
+    def is_root(self) -> bool:
+        '''
+        This actor is the parent most in the tree?
+
+        '''
+        return _state.is_root_process()
+
     msg_buffer_size: int = 2**6
 
     # nursery placeholders filled in by `async_main()`,
@@ -272,7 +282,9 @@ class Actor:
                 stacklevel=2,
             )
 
-            registry_addrs: list[Address] = [wrap_address(arbiter_addr)]
+            registry_addrs: list[Address] = [
+                wrap_address(arbiter_addr)
+            ]
 
         # marked by the process spawning backend at startup
         # will be None for the parent most process started manually
@@ -959,6 +971,21 @@ class Actor:
 
                 rvs['_is_root'] = False  # obvi XD
 
+                # TODO, remove! left in just while protoing init fix!
+                # global _bp
+                # if (
+                #     'chart' in self.aid.name
+                #     and
+                #     isinstance(
+                #         rvs['_root_addrs'][0],
+                #         dict,
+                #     )
+                #     and
+                #     not _bp
+                # ): 
+                #     _bp = True
+                #     breakpoint()
+
                 _state._runtime_vars.update(rvs)
 
                 # `SpawnSpec.reg_addrs`
@@ -1455,7 +1482,12 @@ async def async_main(
     # be False when running as root actor and True when as
     # a subactor.
     parent_addr: UnwrappedAddress|None = None,
-    task_status: TaskStatus[None] = trio.TASK_STATUS_IGNORED,
+    task_status: TaskStatus[
+        tuple[
+            list[UnwrappedAddress],  # accept_addrs
+            list[UnwrappedAddress],  # reg_addrs
+        ]
+    ] = trio.TASK_STATUS_IGNORED,
 
 ) -> None:
     '''
@@ -1634,6 +1666,7 @@ async def async_main(
                 # if addresses point to the same actor..
                 # So we need a way to detect that? maybe iterate
                 # only on unique actor uids?
+                addr: UnwrappedAddress
                 for addr in actor.reg_addrs:
                     try:
                         waddr = wrap_address(addr)
@@ -1642,7 +1675,9 @@ async def async_main(
                         await debug.pause()
 
                     # !TODO, get rid of the local-portal crap XD
+                    reg_portal: Portal
                     async with get_registry(addr) as reg_portal:
+                        accept_addr: UnwrappedAddress
                         for accept_addr in accept_addrs:
                             accept_addr = wrap_address(accept_addr)
 
@@ -1658,8 +1693,12 @@ async def async_main(
 
                     is_registered: bool = True
 
-                # init steps complete
-                task_status.started()
+                # init steps complete, deliver IPC-server and
+                # registrar addrs back to caller.
+                task_status.started((
+                    accept_addrs,
+                    actor.reg_addrs,
+                ))
 
                 # Begin handling our new connection back to our
                 # parent. This is done last since we don't want to

tractor/_spawn.py

@@ -50,7 +50,11 @@ from tractor._addr import UnwrappedAddress
 from tractor._portal import Portal
 from tractor._runtime import Actor
 from tractor._entry import _mp_main
-from tractor._exceptions import ActorFailure
+from tractor._exceptions import (
+    ActorCancelled,
+    ActorFailure,
+    # NoResult,
+)
 from tractor.msg import (
     types as msgtypes,
     pretty_struct,
@@ -137,7 +141,6 @@ def try_set_start_method(
 
 
 async def exhaust_portal(
-
     portal: Portal,
     actor: Actor
 
@@ -185,10 +188,12 @@ async def exhaust_portal(
 
 
 async def cancel_on_completion(
-
     portal: Portal,
     actor: Actor,
-    errors: dict[tuple[str, str], Exception],
+    errors: dict[
+        msgtypes.Aid,
+        Exception,
+    ],
 
 ) -> None:
     '''
@@ -209,24 +214,57 @@ async def cancel_on_completion(
         portal,
         actor,
     )
+    aid: msgtypes.Aid = actor.aid
+    repr_aid: str = aid.reprol(sin_uuid=False)
+
     if isinstance(result, Exception):
-        errors[actor.uid]: Exception = result
+        errors[aid]: Exception = result
         log.cancel(
-            'Cancelling subactor runtime due to error:\n\n'
-            f'Portal.cancel_actor() => {portal.channel.uid}\n\n'
-            f'error: {result}\n'
+            'Cancelling subactor {repr_aid!r} runtime due to error\n'
+            f'\n'
+            f'Portal.cancel_actor() => {portal.channel.uid}\n'
+            f'\n'
+            f'{result!r}\n'
         )
 
     else:
-        log.runtime(
-            'Cancelling subactor gracefully:\n\n'
-            f'Portal.cancel_actor() => {portal.channel.uid}\n\n'
-            f'result: {result}\n'
+        report: str = (
+            f'Cancelling subactor {repr_aid!r} gracefully..\n'
+            f'\n'
+        )
+        canc_info: str = (
+            f'Portal.cancel_actor() => {portal.chan.uid}\n'
+            f'\n'
+            f'final-result => {result!r}\n'
+        )
+        log.cancel(
+            report
+            +
+            canc_info
         )
 
     # cancel the process now that we have a final result
     await portal.cancel_actor()
 
+    if (
+        not errors.get(aid)
+        # and
+        # result is NoResult
+    ):
+        pass
+        # await debug.pause(shield=True)
+
+        # errors[aid] = ActorCancelled(
+        #     message=(
+        #         f'Cancelled subactor {repr_aid!r}\n'
+        #         f'{canc_info}\n'
+        #     ),
+        #     canceller=current_actor().aid,
+        #     # TODO? should we have a ack-msg?
+        #     # ipc_msg=??
+        #     # boxed_type=trio.Cancelled,
+        # )
+
 
 async def hard_kill(
     proc: trio.Process,
@@ -331,6 +369,10 @@ async def soft_kill(
         Awaitable,
     ],
     portal: Portal,
+    errors: dict[
+        msgtypes.Aid,
+        Exception,
+    ],
 
 ) -> None:
     '''
@@ -374,8 +416,8 @@ async def soft_kill(
         # below. This means we try to do a graceful teardown
         # via sending a cancel message before getting out
         # zombie killing tools.
-        async with trio.open_nursery() as n:
-            n.cancel_scope.shield = True
+        async with trio.open_nursery() as tn:
+            tn.cancel_scope.shield = True
 
             async def cancel_on_proc_deth():
                 '''
@@ -385,24 +427,35 @@ async def soft_kill(
 
                 '''
                 await wait_func(proc)
-                n.cancel_scope.cancel()
+                tn.cancel_scope.cancel()
 
             # start a task to wait on the termination of the
             # process by itself waiting on a (caller provided) wait
             # function which should unblock when the target process
             # has terminated.
-            n.start_soon(cancel_on_proc_deth)
+            tn.start_soon(cancel_on_proc_deth)
 
             # send the actor-runtime a cancel request.
             await portal.cancel_actor()
 
+            # if not errors.get(peer_aid):
+            #     errors[peer_aid] = ActorCancelled(
+            #         message=(
+            #             'Sub-actor cancelled gracefully by parent\n'
+            #         ),
+            #         canceller=current_actor().aid,
+            #         # TODO? should we have a ack-msg?
+            #         # ipc_msg=??
+            #         # boxed_type=trio.Cancelled,
+            #     )
+
             if proc.poll() is None:  # type: ignore
                 log.warning(
                     'Subactor still alive after cancel request?\n\n'
                     f'uid: {peer_aid}\n'
                     f'|_{proc}\n'
                 )
-                n.cancel_scope.cancel()
+                tn.cancel_scope.cancel()
         raise
 
 
@@ -410,7 +463,10 @@ async def new_proc(
     name: str,
     actor_nursery: ActorNursery,
     subactor: Actor,
-    errors: dict[tuple[str, str], Exception],
+    errors: dict[
+        msgtypes.Aid,
+        Exception,
+    ],
 
     # passed through to actor main
     bind_addrs: list[UnwrappedAddress],
@@ -449,7 +505,10 @@ async def trio_proc(
     name: str,
     actor_nursery: ActorNursery,
     subactor: Actor,
-    errors: dict[tuple[str, str], Exception],
+    errors: dict[
+        msgtypes.Aid,
+        Exception,
+    ],
 
     # passed through to actor main
     bind_addrs: list[UnwrappedAddress],
@@ -572,9 +631,9 @@ async def trio_proc(
         with trio.CancelScope(shield=True):
             await actor_nursery._join_procs.wait()
 
-        async with trio.open_nursery() as nursery:
+        async with trio.open_nursery() as ptl_reaper_tn:
             if portal in actor_nursery._cancel_after_result_on_exit:
-                nursery.start_soon(
+                ptl_reaper_tn.start_soon(
                     cancel_on_completion,
                     portal,
                     subactor,
@@ -587,7 +646,8 @@ async def trio_proc(
             await soft_kill(
                 proc,
                 trio.Process.wait,  # XXX, uses `pidfd_open()` below.
-                portal
+                portal,
+                errors,
             )
 
             # cancel result waiter that may have been spawned in
@@ -596,7 +656,7 @@ async def trio_proc(
                 'Cancelling portal result reaper task\n'
                 f'c)> {subactor.aid.reprol()!r}\n'
             )
-            nursery.cancel_scope.cancel()
+            ptl_reaper_tn.cancel_scope.cancel()
 
     finally:
         # XXX NOTE XXX: The "hard" reap since no actor zombies are
@@ -669,7 +729,10 @@ async def mp_proc(
     name: str,
     actor_nursery: ActorNursery,  # type: ignore  # noqa
     subactor: Actor,
-    errors: dict[tuple[str, str], Exception],
+    errors: dict[
+        msgtypes.Aid,
+        Exception,
+    ],
     # passed through to actor main
     bind_addrs: list[UnwrappedAddress],
     parent_addr: UnwrappedAddress,
@@ -794,7 +857,7 @@ async def mp_proc(
                     cancel_on_completion,
                     portal,
                     subactor,
-                    errors
+                    errors,
                 )
 
             # This is a "soft" (cancellable) join/reap which
@@ -803,7 +866,8 @@ async def mp_proc(
             await soft_kill(
                 proc,
                 proc_waiter,
-                portal
+                portal,
+                errors,
             )
 
             # cancel result waiter that may have been spawned in

tractor/_streaming.py

@@ -38,6 +38,7 @@ import trio
 from ._exceptions import (
     ContextCancelled,
     RemoteActorError,
+    TransportClosed,
 )
 from .log import get_logger
 from .trionics import (
@@ -59,7 +60,7 @@ if TYPE_CHECKING:
     from .ipc import Channel
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 # TODO: the list
@@ -409,10 +410,8 @@ class MsgStream(trio.abc.Channel):
             # it).
             with trio.CancelScope(shield=True):
                 await self._ctx.send_stop()
-
         except (
-            trio.BrokenResourceError,
-            trio.ClosedResourceError
+            TransportClosed,
         ) as re:
             # the underlying channel may already have been pulled
             # in which case our stop message is meaningless since
@@ -593,9 +592,8 @@ class MsgStream(trio.abc.Channel):
                 ),
             )
         except (
-            trio.ClosedResourceError,
-            trio.BrokenResourceError,
             BrokenPipeError,
+            TransportClosed,
         ) as _trans_err:
             trans_err = _trans_err
             if (

tractor/_supervise.py

@@ -30,6 +30,9 @@ import warnings
 import trio
 
 
+from .msg import (
+    types as msgtypes,
+)
 from .devx import (
     debug,
     pformat as _pformat,
@@ -48,6 +51,7 @@ from .trionics import (
 )
 from ._exceptions import (
     ContextCancelled,
+    ActorCancelled,
 )
 from ._root import (
     open_root_actor,
@@ -62,7 +66,7 @@ if TYPE_CHECKING:
     from .ipc import IPCServer
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 class ActorNursery:
@@ -99,7 +103,10 @@ class ActorNursery:
         actor: Actor,
         ria_nursery: trio.Nursery,
         da_nursery: trio.Nursery,
-        errors: dict[tuple[str, str], BaseException],
+        errors: dict[
+            msgtypes.Aid,
+            BaseException,
+        ],
 
     ) -> None:
         # self.supervisor = supervisor  # TODO
@@ -117,9 +124,11 @@ class ActorNursery:
             ]
         ] = {}
 
+        # signals when it is ok to start waiting o subactor procs
+        # for termination.
         self._join_procs = trio.Event()
         self._at_least_one_child_in_debug: bool = False
-        self.errors = errors
+        self._errors = errors
         self._scope_error: BaseException|None = None
         self.exited = trio.Event()
 
@@ -260,7 +269,7 @@ class ActorNursery:
                 name,
                 self,
                 subactor,
-                self.errors,
+                self._errors,
                 bind_addrs,
                 parent_addr,
                 _rtv,  # run time vars
@@ -364,7 +373,9 @@ class ActorNursery:
         # then `._children`..
         children: dict = self._children
         child_count: int = len(children)
-        msg: str = f'Cancelling actor nursery with {child_count} children\n'
+        msg: str = (
+            f'Cancelling actor-nursery with {child_count} children\n'
+        )
 
         server: IPCServer = self._actor.ipc_server
 
@@ -391,7 +402,9 @@ class ActorNursery:
 
                     else:
                         if portal is None:  # actor hasn't fully spawned yet
-                            event: trio.Event = server._peer_connected[subactor.uid]
+                            event: trio.Event = server._peer_connected[
+                                subactor.uid
+                            ]
                             log.warning(
                                 f"{subactor.uid} never 't finished spawning?"
                             )
@@ -416,7 +429,20 @@ class ActorNursery:
                         # spawn cancel tasks for each sub-actor
                         assert portal
                         if portal.channel.connected():
-                            tn.start_soon(portal.cancel_actor)
+
+                            async def canc_subactor():
+                                await portal.cancel_actor()
+                                # aid: msgtypes.Aid = subactor.aid
+                                # reprol: str = aid.reprol(sin_uuid=False)
+                                # if not self._errors.get(aid):
+                                #     self._errors[aid] = ActorCancelled(
+                                #         message=(
+                                #             f'Sub-actor {reprol!r} cancelled gracefully by parent nursery\n'
+                                #         ),
+                                #         canceller=self._actor.aid,
+                                #     )
+
+                            tn.start_soon(canc_subactor)
 
                 log.cancel(msg)
         # if we cancelled the cancel (we hung cancelling remote actors)
@@ -442,6 +468,47 @@ class ActorNursery:
         # mark ourselves as having (tried to have) cancelled all subactors
         self._join_procs.set()
 
+    @property
+    def maybe_error(self) -> (
+        BaseException|
+        BaseExceptionGroup|
+        None
+    ):
+        '''
+        Deliver any captured scope errors including those relayed
+        from subactors such as `ActorCancelled` during a non-graceful
+        cancellation scenario.
+
+        When more then a "graceful cancel" occurrs wrap all collected
+        sub-exceptions in a raised `ExceptionGroup`.
+
+        '''
+        scope_exc: BaseException|None = self._scope_error
+
+        # XXX NOTE, only pack an eg if there i at least one
+        # non-actorc exception received from a subactor, OR
+        # return `._scope_error` verbatim.
+        if (errors := self._errors):
+            # use `BaseExceptionGroup` as needed
+            excs: list[BaseException] = list(errors.values())
+            if (
+                len(excs) > 1
+                and
+                any(
+                    type(exc) not in {ActorCancelled,}
+                    for exc in excs
+                )
+            ):
+                return ExceptionGroup(
+                    'ActorNursery multi-errored with',
+                    tuple(excs),
+                )
+
+            # raise the lone subactor exc
+            return list(excs)[0]
+
+        return scope_exc
+
 
 @acm
 async def _open_and_supervise_one_cancels_all_nursery(
@@ -457,7 +524,10 @@ async def _open_and_supervise_one_cancels_all_nursery(
     inner_err: BaseException|None = None
 
     # the collection of errors retreived from spawned sub-actors
-    errors: dict[tuple[str, str], BaseException] = {}
+    errors: dict[
+        msgtypes.Aid,
+        BaseException,
+    ] = {}
 
     # This is the outermost level "deamon actor" nursery. It is awaited
     # **after** the below inner "run in actor nursery". This allows for
@@ -467,176 +537,212 @@ async def _open_and_supervise_one_cancels_all_nursery(
     # `ActorNursery.start_actor()`).
 
     # errors from this daemon actor nursery bubble up to caller
-    async with (
-        collapse_eg(),
-        trio.open_nursery() as da_nursery,
-    ):
-        try:
-            # This is the inner level "run in actor" nursery. It is
-            # awaited first since actors spawned in this way (using
-            # `ActorNusery.run_in_actor()`) are expected to only
-            # return a single result and then complete (i.e. be canclled
-            # gracefully). Errors collected from these actors are
-            # immediately raised for handling by a supervisor strategy.
-            # As such if the strategy propagates any error(s) upwards
-            # the above "daemon actor" nursery will be notified.
-            async with (
-                collapse_eg(),
-                trio.open_nursery() as ria_nursery,
-            ):
-                an = ActorNursery(
-                    actor,
-                    ria_nursery,
-                    da_nursery,
-                    errors
-                )
-                try:
-                    # spawning of actors happens in the caller's scope
-                    # after we yield upwards
-                    yield an
-
-                    # When we didn't error in the caller's scope,
-                    # signal all process-monitor-tasks to conduct
-                    # the "hard join phase".
-                    log.runtime(
-                        'Waiting on subactors to complete:\n'
-                        f'>}} {len(an._children)}\n'
+    try:
+        async with (
+            collapse_eg(),
+            trio.open_nursery() as da_nursery,
+        ):
+            try:
+                # This is the inner level "run in actor" nursery. It is
+                # awaited first since actors spawned in this way (using
+                # `ActorNusery.run_in_actor()`) are expected to only
+                # return a single result and then complete (i.e. be canclled
+                # gracefully). Errors collected from these actors are
+                # immediately raised for handling by a supervisor strategy.
+                # As such if the strategy propagates any error(s) upwards
+                # the above "daemon actor" nursery will be notified.
+                async with (
+                    collapse_eg(),
+                    trio.open_nursery() as ria_nursery,
+                ):
+                    an = ActorNursery(
+                        actor,
+                        ria_nursery,
+                        da_nursery,
+                        errors
                     )
-                    an._join_procs.set()
+                    try:
+                        # spawning of actors happens in the caller's scope
+                        # after we yield upwards
+                        yield an
 
-                except BaseException as _inner_err:
-                    inner_err = _inner_err
-                    errors[actor.uid] = inner_err
+                        # When we didn't error in the caller's scope,
+                        # signal all process-monitor-tasks to conduct
+                        # the "hard join phase".
+                        log.runtime(
+                            'Waiting on subactors to complete:\n'
+                            f'>}} {len(an._children)}\n'
+                        )
+                        an._join_procs.set()
 
-                    # If we error in the root but the debugger is
-                    # engaged we don't want to prematurely kill (and
-                    # thus clobber access to) the local tty since it
-                    # will make the pdb repl unusable.
-                    # Instead try to wait for pdb to be released before
-                    # tearing down.
-                    await debug.maybe_wait_for_debugger(
-                        child_in_debug=an._at_least_one_child_in_debug
-                    )
+                    except BaseException as _inner_err:
+                        inner_err = _inner_err
+                        # errors[actor.aid] = inner_err
 
-                    # if the caller's scope errored then we activate our
-                    # one-cancels-all supervisor strategy (don't
-                    # worry more are coming).
-                    an._join_procs.set()
+                        # If we error in the root but the debugger is
+                        # engaged we don't want to prematurely kill (and
+                        # thus clobber access to) the local tty since it
+                        # will make the pdb repl unusable.
+                        # Instead try to wait for pdb to be released before
+                        # tearing down.
+                        await debug.maybe_wait_for_debugger(
+                            child_in_debug=an._at_least_one_child_in_debug
+                        )
 
-                    # XXX NOTE XXX: hypothetically an error could
-                    # be raised and then a cancel signal shows up
-                    # slightly after in which case the `else:`
-                    # block here might not complete?  For now,
-                    # shield both.
-                    with trio.CancelScope(shield=True):
-                        etype: type = type(inner_err)
-                        if etype in (
-                            trio.Cancelled,
-                            KeyboardInterrupt,
-                        ) or (
-                            is_multi_cancelled(inner_err)
-                        ):
-                            log.cancel(
-                                f'Actor-nursery cancelled by {etype}\n\n'
+                        # if the caller's scope errored then we activate our
+                        # one-cancels-all supervisor strategy (don't
+                        # worry more are coming).
+                        an._join_procs.set()
 
-                                f'{current_actor().uid}\n'
-                                f' |_{an}\n\n'
+                        # XXX NOTE XXX: hypothetically an error could
+                        # be raised and then a cancel signal shows up
+                        # slightly after in which case the `else:`
+                        # block here might not complete?  For now,
+                        # shield both.
+                        with trio.CancelScope(shield=True):
+                            etype: type = type(inner_err)
+                            if etype in (
+                                trio.Cancelled,
+                                KeyboardInterrupt,
+                            ) or (
+                                is_multi_cancelled(inner_err)
+                            ):
+                                log.cancel(
+                                    f'Actor-nursery cancelled by {etype}\n\n'
 
-                                # TODO: show tb str?
-                                # f'{tb_str}'
-                            )
-                        elif etype in {
-                            ContextCancelled,
-                        }:
-                            log.cancel(
-                                'Actor-nursery caught remote cancellation\n'
-                                '\n'
-                                f'{inner_err.tb_str}'
-                            )
-                        else:
-                            log.exception(
-                                'Nursery errored with:\n'
+                                    f'{current_actor().uid}\n'
+                                    f' |_{an}\n\n'
 
-                                # TODO: same thing as in
-                                # `._invoke()` to compute how to
-                                # place this div-line in the
-                                # middle of the above msg
-                                # content..
-                                # -[ ] prolly helper-func it too
-                                #   in our `.log` module..
-                                # '------ - ------'
-                            )
+                                    # TODO: show tb str?
+                                    # f'{tb_str}'
+                                )
+                            elif etype in {
+                                ContextCancelled,
+                            }:
+                                log.cancel(
+                                    'Actor-nursery caught remote cancellation\n'
+                                    '\n'
+                                    f'{inner_err.tb_str}'
+                                )
+                            else:
+                                log.exception(
+                                    'Nursery errored with:\n'
 
-                        # cancel all subactors
-                        await an.cancel()
+                                    # TODO: same thing as in
+                                    # `._invoke()` to compute how to
+                                    # place this div-line in the
+                                    # middle of the above msg
+                                    # content..
+                                    # -[ ] prolly helper-func it too
+                                    #   in our `.log` module..
+                                    # '------ - ------'
+                                )
 
-            # ria_nursery scope end
+                            # cancel all subactors
+                            await an.cancel()
 
-        # TODO: this is the handler around the ``.run_in_actor()``
-        # nursery. Ideally we can drop this entirely in the future as
-        # the whole ``.run_in_actor()`` API should be built "on top of"
-        # this lower level spawn-request-cancel "daemon actor" API where
-        # a local in-actor task nursery is used with one-to-one task
-        # + `await Portal.run()` calls and the results/errors are
-        # handled directly (inline) and errors by the local nursery.
-        except (
-            Exception,
-            BaseExceptionGroup,
-            trio.Cancelled
-        ) as _outer_err:
-            outer_err = _outer_err
+                # ria_nursery scope end
 
-            an._scope_error = outer_err or inner_err
+            # TODO: this is the handler around the ``.run_in_actor()``
+            # nursery. Ideally we can drop this entirely in the future as
+            # the whole ``.run_in_actor()`` API should be built "on top of"
+            # this lower level spawn-request-cancel "daemon actor" API where
+            # a local in-actor task nursery is used with one-to-one task
+            # + `await Portal.run()` calls and the results/errors are
+            # handled directly (inline) and errors by the local nursery.
+            except (
+                Exception,
+                BaseExceptionGroup,
+                trio.Cancelled
+            ) as _outer_err:
+                outer_err = _outer_err
 
-            # XXX: yet another guard before allowing the cancel
-            # sequence in case a (single) child is in debug.
-            await debug.maybe_wait_for_debugger(
-                child_in_debug=an._at_least_one_child_in_debug
-            )
-
-            # If actor-local error was raised while waiting on
-            # ".run_in_actor()" actors then we also want to cancel all
-            # remaining sub-actors (due to our lone strategy:
-            # one-cancels-all).
-            if an._children:
-                log.cancel(
-                    'Actor-nursery cancelling due error type:\n'
-                    f'{outer_err}\n'
+                # XXX: yet another guard before allowing the cancel
+                # sequence in case a (single) child is in debug.
+                await debug.maybe_wait_for_debugger(
+                    child_in_debug=an._at_least_one_child_in_debug
                 )
-                with trio.CancelScope(shield=True):
-                    await an.cancel()
-            raise
 
-        finally:
-            # No errors were raised while awaiting ".run_in_actor()"
-            # actors but those actors may have returned remote errors as
-            # results (meaning they errored remotely and have relayed
-            # those errors back to this parent actor). The errors are
-            # collected in ``errors`` so cancel all actors, summarize
-            # all errors and re-raise.
-            if errors:
+                # If actor-local error was raised while waiting on
+                # ".run_in_actor()" actors then we also want to cancel all
+                # remaining sub-actors (due to our lone strategy:
+                # one-cancels-all).
                 if an._children:
+                    log.cancel(
+                        'Actor-nursery cancelling due error type:\n'
+                        f'{outer_err}\n'
+                    )
                     with trio.CancelScope(shield=True):
                         await an.cancel()
 
-                # use `BaseExceptionGroup` as needed
-                if len(errors) > 1:
-                    raise BaseExceptionGroup(
-                        'tractor.ActorNursery errored with',
-                        tuple(errors.values()),
-                    )
-                else:
-                    raise list(errors.values())[0]
+                raise
 
-            # show frame on any (likely) internal error
-            if (
-                not an.cancelled
-                and an._scope_error
-            ):
-                __tracebackhide__: bool = False
+            finally:
+                scope_exc = an._scope_error = outer_err or inner_err
+                # await debug.pause(shield=True)
+                # if scope_exc:
+                #     errors[actor.aid] = scope_exc
 
-        # da_nursery scope end - nursery checkpoint
-    # final exit
+                # show this frame on any internal error
+                if (
+                    not an.cancelled
+                    and
+                    scope_exc
+                ):
+                    __tracebackhide__: bool = False
+
+                # NOTE, it's possible no errors were raised while
+                # awaiting ".run_in_actor()" actors but those
+                # sub-actors may have delivered remote errors as
+                # results, normally captured via machinery in
+                # `._spawn.cancel_on_completion()`.
+                #
+                # Any such remote errors are collected in `an._errors`
+                # which is summarized via `ActorNursery.maybe_error`
+                # which is maybe re-raised in an outer block (below).
+                #
+                # So here we first cancel all subactors the summarize
+                # all errors and then later (in that outer block)
+                # maybe-raise on a "non-graceful" cancellation
+                # outcome, normally as a summary EG.
+                if (
+                    scope_exc
+                    or
+                    errors
+                ):
+
+                    if an._children:
+                        with trio.CancelScope(shield=True):
+                            await an.cancel()
+
+                    # cancel outer tn so we unblock outside this
+                    # finally!
+                    da_nursery.cance_scope.cancel()
+                    #
+                    # ^TODO? still don't get why needed?
+                    # - an.cancel() should cause all spawn-subtasks
+                    #   to eventually exit?
+                    # - also, could (instead) we sync to an event here before
+                    #   (ever) calling `an.cancel()`??
+
+        # `da_nursery` scope end, thus a checkpoint.
+    finally:
+
+            # raise any eg compiled from all subs
+            # ??TODO should we also adopt strict-egs here like
+            # `trio.Nursery`??
+            #
+            # XXX justification notes,
+            # docs: https://trio.readthedocs.io/en/stable/reference-core.html#historical-note-non-strict-exceptiongroups
+            # anthropic: https://discuss.python.org/t/using-exceptiongroup-at-anthropic-experience-report/20888
+            # gh: https://github.com/python-trio/trio/issues/611
+        if an_exc := an.maybe_error:
+            raise an_exc
+
+        if scope_exc := an._scope_error:
+            raise scope_exc
+
+    # @acm-fn scope exit
 
 
 _shutdown_msg: str = (
@@ -648,7 +754,7 @@ _shutdown_msg: str = (
 # @api_frame
 async def open_nursery(
     *,  # named params only!
-    hide_tb: bool = True,
+    hide_tb: bool = False,
     **kwargs,
     # ^TODO, paramspec for `open_root_actor()`
 
@@ -684,16 +790,21 @@ async def open_nursery(
             # mark us for teardown on exit
             implicit_runtime: bool = True
 
-            async with open_root_actor(
-                hide_tb=hide_tb,
-                **kwargs,
-            ) as actor:
+            async with (
+                # collapse_eg(hide_tb=hide_tb),
+                open_root_actor(
+                    hide_tb=hide_tb,
+                    **kwargs,
+                ) as actor,
+            ):
                 assert actor is current_actor()
 
                 try:
-                    async with _open_and_supervise_one_cancels_all_nursery(
-                        actor
-                    ) as an:
+                    async with (
+                        _open_and_supervise_one_cancels_all_nursery(
+                            actor
+                        ) as an
+                    ):
 
                         # NOTE: mark this nursery as having
                         # implicitly started the root actor so

tractor/devx/_frame_stack.py

@@ -49,7 +49,7 @@ from tractor.msg import (
 import wrapt
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 # TODO: yeah, i don't love this and we should prolly just
 # write a decorator that actually keeps a stupid ref to the func

tractor/devx/_stackscope.py

@@ -51,7 +51,7 @@ from tractor import (
 )
 from tractor.devx import debug
 
-log = logmod.get_logger(__name__)
+log = logmod.get_logger()
 
 
 if TYPE_CHECKING:

tractor/devx/debug/__init__.py

@@ -59,7 +59,7 @@ from ._sigint import (
     _ctlc_ignore_header as _ctlc_ignore_header
 )
 
-log = get_logger(__name__)
+log = get_logger()
 
 # ----------------
 # XXX PKG TODO XXX

tractor/devx/debug/_post_mortem.py

@@ -84,7 +84,7 @@ _crash_msg: str = (
     'Opening a pdb REPL in crashed actor'
 )
 
-log = get_logger(__package__)
+log = get_logger()
 
 
 class BoxedMaybeException(Struct):

tractor/devx/debug/_sigint.py

@@ -47,7 +47,7 @@ if TYPE_CHECKING:
         Actor,
     )
 
-log = get_logger(__name__)
+log = get_logger()
 
 _ctlc_ignore_header: str = (
     'Ignoring SIGINT while debug REPL in use'

tractor/devx/debug/_sync.py

@@ -58,7 +58,7 @@ from ._sigint import (
     _ctlc_ignore_header as _ctlc_ignore_header
 )
 
-log = get_logger(__package__)
+log = get_logger()
 
 
 async def maybe_wait_for_debugger(

tractor/devx/debug/_trace.py

@@ -93,7 +93,7 @@ if TYPE_CHECKING:
     # from ._post_mortem import BoxedMaybeException
     from ._repl import PdbREPL
 
-log = get_logger(__package__)
+log = get_logger()
 
 _pause_msg: str = 'Opening a pdb REPL in paused actor'
 _repl_fail_msg: str|None = (
@@ -628,7 +628,7 @@ def _set_trace(
     log.pdb(
         f'{_pause_msg}\n'
         f'>(\n'
-        f'|_{actor.uid}\n'
+        f'|_{actor.aid.uid}\n'
         f'  |_{task}\n' #  @ {actor.uid}\n'
         # f'|_{task}\n'
         # ^-TODO-^ more compact pformating?
@@ -1257,3 +1257,26 @@ async def breakpoint(
         api_frame=inspect.currentframe(),
         **kwargs,
     )
+
+
+async def maybe_pause_bp():
+    '''
+    Internal (ONLY for now) `breakpoint()`-er fn which only tries to
+    use the multi-actor `.pause()` API when the current actor is the
+    root.
+
+    ?! BUT WHY !?
+       -------
+
+    This is useful when debugging cases where the tpt layer breaks
+    (or is intentionally broken, say during resiliency testing) in
+    the case where a child can no longer contact the root process to
+    acquire the process-tree-singleton TTY lock.
+
+    '''
+    import tractor
+    actor = tractor.current_actor()
+    if actor.aid.name == 'root':
+        await tractor.pause(shield=True)
+    else:
+        tractor.devx.mk_pdb().set_trace()

tractor/devx/debug/_tty_lock.py

@@ -81,7 +81,7 @@ if TYPE_CHECKING:
         BoxedMaybeException,
     )
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 class LockStatus(

tractor/ipc/_chan.py

@@ -60,7 +60,7 @@ if TYPE_CHECKING:
     from ._transport import MsgTransport
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 _is_windows = platform.system() == 'Windows'
 
@@ -307,7 +307,12 @@ class Channel:
 
     ) -> None:
         '''
-        Send a coded msg-blob over the transport.
+        Send a coded msg-blob over the underlying IPC transport.
+
+        This fn raises `TransportClosed` on comms failures and is
+        normally handled by higher level runtime machinery for the
+        expected-graceful cases, normally ephemercal
+        (re/dis)connects.
 
         '''
         __tracebackhide__: bool = hide_tb
@@ -334,9 +339,10 @@ class Channel:
                     except KeyError:
                         raise err
                 case TransportClosed():
+                    src_exc_str: str = err.repr_src_exc()
                     log.transport(
-                        f'Transport stream closed due to\n'
-                        f'{err.repr_src_exc()}\n'
+                        f'Transport stream closed due to,\n'
+                        f'{src_exc_str}'
                     )
 
                 case _:
@@ -345,6 +351,11 @@ class Channel:
             raise
 
     async def recv(self) -> Any:
+        '''
+        Receive the latest (queued) msg-blob from the underlying IPC
+        transport.
+
+        '''
         assert self._transport
         return await self._transport.recv()
 
@@ -418,16 +429,18 @@ class Channel:
         self
     ) -> AsyncGenerator[Any, None]:
         '''
-        Yield `MsgType` IPC msgs decoded and deliverd from
-        an underlying `MsgTransport` protocol.
+        Yield `MsgType` IPC msgs decoded and deliverd from an
+        underlying `MsgTransport` protocol.
 
-        This is a streaming routine alo implemented as an async-gen
-        func (same a `MsgTransport._iter_pkts()`) gets allocated by
-        a `.__call__()` inside `.__init__()` where it is assigned to
-        the `._aiter_msgs` attr.
+        This is a streaming routine alo implemented as an
+        async-generator func (same a `MsgTransport._iter_pkts()`)
+        gets allocated by a `.__call__()` inside `.__init__()` where
+        it is assigned to the `._aiter_msgs` attr.
 
         '''
-        assert self._transport
+        if not self._transport:
+            raise RuntimeError('No IPC transport initialized!?')
+
         while True:
             try:
                 async for msg in self._transport:
@@ -462,7 +475,15 @@ class Channel:
             #     continue
 
     def connected(self) -> bool:
-        return self._transport.connected() if self._transport else False
+        '''
+        Predicate whether underlying IPC tpt is connected.
+
+        '''
+        return (
+            self._transport.connected()
+            if self._transport
+            else False
+        )
 
     async def _do_handshake(
         self,
@@ -493,8 +514,11 @@ async def _connect_chan(
     addr: UnwrappedAddress
 ) -> typing.AsyncGenerator[Channel, None]:
     '''
-    Create and connect a channel with disconnect on context manager
-    teardown.
+    Create and connect a `Channel` to the provided `addr`, disconnect
+    it on cm exit.
+
+    NOTE, this is a lowlevel, normally internal-only iface. You
+    should likely use `.open_portal()` instead.
 
     '''
     chan = await Channel.from_addr(addr)

tractor/ipc/_server.py

@@ -72,7 +72,7 @@ if TYPE_CHECKING:
     from .._supervise import ActorNursery
 
 
-log = log.get_logger(__name__)
+log = log.get_logger()
 
 
 async def maybe_wait_on_canced_subs(

tractor/ipc/_shm.py

@@ -59,7 +59,7 @@ except ImportError:
     pass
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 SharedMemory = disable_mantracker()

tractor/ipc/_tcp.py

@@ -41,7 +41,7 @@ from tractor.ipc._transport import (
 )
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 class TCPAddress(

tractor/ipc/_transport.py

@@ -56,7 +56,7 @@ from tractor.msg import (
 if TYPE_CHECKING:
     from tractor._addr import Address
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 # (codec, transport)
@@ -154,7 +154,6 @@ class MsgTransport(Protocol):
     #     ...
 
 
-
 class MsgpackTransport(MsgTransport):
 
     # TODO: better naming for this?
@@ -278,14 +277,18 @@ class MsgpackTransport(MsgTransport):
             except trio.ClosedResourceError as cre:
                 closure_err = cre
 
+                # await tractor.devx._trace.maybe_pause_bp()
+
                 raise TransportClosed(
                     message=(
-                        f'{tpt_name} was already closed locally ?\n'
+                        f'{tpt_name} was already closed locally?'
                     ),
                     src_exc=closure_err,
                     loglevel='error',
                     raise_on_report=(
-                        'another task closed this fd' in closure_err.args
+                        'another task closed this fd'
+                        in
+                        closure_err.args
                     ),
                 ) from closure_err
 
@@ -435,6 +438,11 @@ class MsgpackTransport(MsgTransport):
                 trans_err = _re
                 tpt_name: str = f'{type(self).__name__!r}'
 
+                trans_err_msg: str = trans_err.args[0]
+                by_whom: str = {
+                    'another task closed this fd': 'locally',
+                    'this socket was already closed': 'by peer',
+                }.get(trans_err_msg)
                 match trans_err:
 
                     # XXX, specifc to UDS transport and its,
@@ -446,38 +454,42 @@ class MsgpackTransport(MsgTransport):
                     case trio.BrokenResourceError() if (
                         '[Errno 32] Broken pipe'
                         in
-                        trans_err.args[0]
+                        trans_err_msg
                     ):
                         tpt_closed = TransportClosed.from_src_exc(
                             message=(
                                 f'{tpt_name} already closed by peer\n'
                             ),
-                            body=f'{self}\n',
+                            body=f'{self}',
                             src_exc=trans_err,
                             raise_on_report=True,
                             loglevel='transport',
                         )
                         raise tpt_closed from trans_err
 
-                    # case trio.ClosedResourceError() if (
-                    #     'this socket was already closed'
-                    #     in
-                    #     trans_err.args[0]
-                    # ):
-                    #     tpt_closed = TransportClosed.from_src_exc(
-                    #         message=(
-                    #             f'{tpt_name} already closed by peer\n'
-                    #         ),
-                    #         body=f'{self}\n',
-                    #         src_exc=trans_err,
-                    #         raise_on_report=True,
-                    #         loglevel='transport',
-                    #     )
-                    #     raise tpt_closed from trans_err
+                    # ??TODO??, what case in piker does this and HOW
+                    # CAN WE RE-PRODUCE IT?!?!?
+                    case trio.ClosedResourceError() if (
+                        by_whom
+                    ):
+                        tpt_closed = TransportClosed.from_src_exc(
+                            message=(
+                                f'{tpt_name} was already closed {by_whom!r}?\n'
+                            ),
+                            body=f'{self}',
+                            src_exc=trans_err,
+                            raise_on_report=True,
+                            loglevel='transport',
+                        )
 
-                    # unless the disconnect condition falls under "a
-                    # normal operation breakage" we usualy console warn
-                    # about it.
+                        # await tractor.devx._trace.maybe_pause_bp()
+                        raise tpt_closed from trans_err
+
+                    # XXX, unless the disconnect condition falls
+                    # under "a normal/expected operating breakage"
+                    # (per the `trans_err_msg` guards in the cases
+                    # above) we usualy console-error about it and
+                    # raise-thru. about it.
                     case _:
                         log.exception(
                             f'{tpt_name} layer failed pre-send ??\n'

tractor/ipc/_uds.py

@@ -63,7 +63,7 @@ if TYPE_CHECKING:
     from ._runtime import Actor
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 def unwrap_sockpath(
@@ -166,6 +166,10 @@ class UDSAddress(
         )
         if actor:
             sockname: str = '::'.join(actor.uid) + f'@{pid}'
+            # ?^TODO, for `multiaddr`'s parser we can't use the `::`
+            # above^, SO maybe a `.` or something else here?
+            # sockname: str = '.'.join(actor.uid) + f'@{pid}'
+            # -[ ] CURRENTLY using `.` BREAKS TEST SUITE tho..
         else:
             prefix: str = '<unknown-actor>'
             if is_root_process():

tractor/log.py

@@ -14,11 +14,23 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-"""
-Log like a forester!
+'''
+An enhanced logging subsys.
 
-"""
+An extended logging layer using (for now) the stdlib's `logging`
++ `colorlog` which embeds concurrency-primitive/runtime info into
+records (headers) to help you better grok your distributed systems
+built on `tractor`.
+
+
+'''
 from collections.abc import Mapping
+from functools import partial
+from inspect import (
+    FrameInfo,
+    getmodule,
+    stack,
+)
 import sys
 import logging
 from logging import (
@@ -26,20 +38,24 @@ from logging import (
     Logger,
     StreamHandler,
 )
-import colorlog  # type: ignore
+from types import ModuleType
+import warnings
 
+import colorlog  # type: ignore
+# ?TODO, some other (modern) alt libs?
+# import coloredlogs
+# import colored_traceback.auto  # ?TODO, need better config?
 import trio
 
 from ._state import current_actor
 
 
-_proj_name: str = 'tractor'
 _default_loglevel: str = 'ERROR'
 
 # Super sexy formatting thanks to ``colorlog``.
 # (NOTE: we use the '{' format style)
 # Here, `thin_white` is just the layperson's gray.
-LOG_FORMAT = (
+LOG_FORMAT: str = (
     # "{bold_white}{log_color}{asctime}{reset}"
     "{log_color}{asctime}{reset}"
     " {bold_white}{thin_white}({reset}"
@@ -51,7 +67,7 @@ LOG_FORMAT = (
     " {reset}{bold_white}{thin_white}{message}"
 )
 
-DATE_FORMAT = '%b %d %H:%M:%S'
+DATE_FORMAT: str = '%b %d %H:%M:%S'
 
 # FYI, ERROR is 40
 # TODO: use a `bidict` to avoid the :155 check?
@@ -75,7 +91,10 @@ STD_PALETTE = {
     'TRANSPORT': 'cyan',
 }
 
-BOLD_PALETTE = {
+BOLD_PALETTE: dict[
+    str,
+    dict[int, str],
+] = {
     'bold': {
         level: f"bold_{color}" for level, color in STD_PALETTE.items()}
 }
@@ -97,9 +116,26 @@ def at_least_level(
     return False
 
 
-# TODO: this isn't showing the correct '{filename}'
-# as it did before..
+# TODO, compare with using a "filter" instead?
+# - https://stackoverflow.com/questions/60691759/add-information-to-every-log-message-in-python-logging/61830838#61830838
+#  |_corresponding dict-config,
+#    https://stackoverflow.com/questions/7507825/where-is-a-complete-example-of-logging-config-dictconfig/7507842#7507842
+#  - [ ] what's the benefit/tradeoffs?
+#
 class StackLevelAdapter(LoggerAdapter):
+    '''
+    A (software) stack oriented logger "adapter".
+
+    '''
+    @property
+    def level(self) -> str:
+        '''
+        The currently set `str` emit level (in lowercase).
+
+        '''
+        return logging.getLevelName(
+            self.getEffectiveLevel()
+        ).lower()
 
     def at_least_level(
         self,
@@ -248,9 +284,14 @@ def pformat_task_uid(
     return f'{task.name}[{tid_part}]'
 
 
+_curr_actor_no_exc = partial(
+    current_actor,
+    err_on_no_runtime=False,
+)
+
 _conc_name_getters = {
     'task': pformat_task_uid,
-    'actor': lambda: current_actor(),
+    'actor': lambda: _curr_actor_no_exc(),
     'actor_name': lambda: current_actor().name,
     'actor_uid': lambda: current_actor().uid[1][:6],
 }
@@ -282,9 +323,16 @@ class ActorContextInfo(Mapping):
             return f'no {key} context'
 
 
+_proj_name: str = 'tractor'
+
+
 def get_logger(
     name: str|None = None,
-    _root_name: str = _proj_name,
+    # ^NOTE, setting `name=_proj_name=='tractor'` enables the "root
+    # logger" for `tractor` itself.
+    pkg_name: str = _proj_name,
+    # XXX, deprecated, use ^
+    _root_name: str|None = None,
 
     logger: Logger|None = None,
 
@@ -293,49 +341,287 @@ def get_logger(
     #  |_https://stackoverflow.com/questions/7507825/where-is-a-complete-example-of-logging-config-dictconfig
     #  |_https://docs.python.org/3/library/logging.config.html#configuration-dictionary-schema
     subsys_spec: str|None = None,
+    mk_sublog: bool = True,
+    _strict_debug: bool = False,
 
 ) -> StackLevelAdapter:
     '''
     Return the `tractor`-library root logger or a sub-logger for
     `name` if provided.
 
-    '''
-    log: Logger
-    log = rlog = logger or logging.getLogger(_root_name)
+    When `name` is left null we try to auto-detect the caller's
+    `mod.__name__` and use that as a the sub-logger key.
+    This allows for example creating a module level instance like,
 
+    .. code:: python
+
+        log = tractor.log.get_logger(_root_name='mylib')
+
+    and by default all console record headers will show the caller's
+    (of any `log.<level>()`-method) correct sub-pkg's
+    + py-module-file.
+
+    '''
+    if _root_name:
+        msg: str = (
+            'The `_root_name: str` param of `get_logger()` is now deprecated.\n'
+            'Use the new `pkg_name: str` instead, it is the same usage.\n'
+        )
+        warnings.warn(
+            msg,
+            DeprecationWarning,
+            stacklevel=2,
+        )
+
+        pkg_name: str =  _root_name
+
+    def get_caller_mod(
+        frames_up:int = 2
+    ):
+        '''
+        Attempt to get the module which called `tractor.get_logger()`.
+
+        '''
+        callstack: list[FrameInfo] = stack()
+        caller_fi: FrameInfo = callstack[frames_up]
+        caller_mod: ModuleType = getmodule(caller_fi.frame)
+        return caller_mod
+
+    # --- Auto--naming-CASE ---
+    # -------------------------
+    # Implicitly introspect the caller's module-name whenever `name`
+    # if left as the null default.
+    #
+    # When the `pkg_name` is `in` in the `mod.__name__` we presume
+    # this instance can be created as a sub-`StackLevelAdapter` and
+    # that the intention is to get free module-path tracing and
+    # filtering (well once we implement that) oriented around the
+    # py-module code hierarchy of the consuming project.
+    #
+    if (
+        mk_sublog
+        and
+        name is None
+        and
+        pkg_name
+    ):
+        if (caller_mod := get_caller_mod()):
+            # ?XXX how is this `caller_mod.__name__` defined?
+            # => well by how the mod is imported.. XD
+            # |_https://stackoverflow.com/a/15883682
+            #
+            # if pkg_name in caller_mod.__package__:
+            #     from tractor.devx.debug import mk_pdb
+            #     mk_pdb().set_trace()
+
+            mod_ns_path: str = caller_mod.__name__
+            mod_pkg_ns_path: str = caller_mod.__package__
+            if (
+                mod_pkg_ns_path in mod_ns_path
+                or
+                pkg_name in mod_ns_path
+            ):
+                # proper_mod_name = mod_ns_path.lstrip(
+                proper_mod_name = mod_pkg_ns_path.removeprefix(
+                    f'{pkg_name}.'
+                )
+                name = proper_mod_name
+
+            elif (
+                pkg_name
+                # and
+                # pkg_name in mod_ns_path
+            ):
+                name = mod_ns_path
+
+            if _strict_debug:
+                msg: str = (
+                    f'@ {get_caller_mod()}\n'
+                    f'Generating sub-logger name,\n'
+                    f'{pkg_name}.{name}\n'
+                )
+                if _curr_actor_no_exc():
+                    _root_log.debug(msg)
+                elif pkg_name != _proj_name:
+                    print(
+                        f'=> tractor.log.get_logger():\n'
+                        f'{msg}\n'
+                    )
+
+    # build a root logger instance
+    log: Logger
+    rlog = log = (
+        logger
+        or
+        logging.getLogger(pkg_name)
+    )
+
+    # XXX, lowlevel debuggin..
+    # if pkg_name != _proj_name:
+        # from tractor.devx.debug import mk_pdb
+        # mk_pdb().set_trace()
+
+    # NOTE: for handling for modules that use the unecessary,
+    # `get_logger(__name__)`
+    #
+    # we make the following stylistic choice:
+    # - always avoid duplicate project-package token
+    #   in msg output: i.e. tractor.tractor.ipc._chan.py in header
+    #   looks ridiculous XD
+    # - never show the leaf module name in the {name} part
+    #   since in python the {filename} is always this same
+    #   module-file.
     if (
         name
         and
-        name != _proj_name
+        # ?TODO? more correct?
+        # _proj_name not in name
+        name != pkg_name
     ):
+        # ex. modden.runtime.progman
+        # -> rname='modden', _, pkg_path='runtime.progman'
+        if (
+            pkg_name
+            and
+            pkg_name in name
+        ):
+            proper_name: str = name.removeprefix(
+                f'{pkg_name}.'
+            )
+            msg: str = (
+                f'@ {get_caller_mod()}\n'
+                f'Duplicate pkg-name in sub-logger `name`-key?\n'
+                f'pkg_name = {pkg_name!r}\n'
+                f'name = {name!r}\n'
+                f'\n'
+                f'=> You should change your input params to,\n'
+                f'get_logger(\n' 
+                f'    pkg_name={pkg_name!r}\n'
+                f'    name={proper_name!r}\n'
+                f')'
+            )
+            # assert _duplicate == rname
+            if _curr_actor_no_exc():
+                _root_log.warning(msg)
+            else:
+                print(
+                    f'=> tractor.log.get_logger() ERROR:\n'
+                    f'{msg}\n'
+                )
 
-        # NOTE: for handling for modules that use `get_logger(__name__)`
-        # we make the following stylistic choice:
-        # - always avoid duplicate project-package token
-        #   in msg output: i.e. tractor.tractor.ipc._chan.py in header
-        #   looks ridiculous XD
-        # - never show the leaf module name in the {name} part
-        #   since in python the {filename} is always this same
-        #   module-file.
+            name = proper_name
 
-        sub_name: None|str = None
-        rname, _, sub_name = name.partition('.')
-        pkgpath, _, modfilename = sub_name.rpartition('.')
+        rname: str = pkg_name
+        pkg_path: str = name
 
-        # NOTE: for tractor itself never include the last level
-        # module key in the name such that something like: eg.
-        # 'tractor.trionics._broadcast` only includes the first
-        # 2 tokens in the (coloured) name part.
-        if rname == 'tractor':
-            sub_name = pkgpath
 
-        if _root_name in sub_name:
-            duplicate, _, sub_name = sub_name.partition('.')
+            # (
+            #     rname,
+            #     _,
+            #     pkg_path,
+            # ) = name.partition('.')
 
-        if not sub_name:
+        # For ex. 'modden.runtime.progman'
+        # -> pkgpath='runtime', _, leaf_mod='progman'
+        (
+            subpkg_path,
+            _,
+            leaf_mod,
+        ) = pkg_path.rpartition('.')
+
+        # NOTE: special usage for passing `name=__name__`,
+        #
+        # - remove duplication of any root-pkg-name in the
+        #   (sub/child-)logger name; i.e. never include the
+        #   `pkg_name` *twice* in the top-most-pkg-name/level
+        #
+        # -> this happens normally since it is added to `.getChild()`
+        #   and as the name of its root-logger.
+        #
+        # => So for ex. (module key in the name) something like
+        #   `name='tractor.trionics._broadcast` is passed,
+        #   only includes the first 2 sub-pkg name-tokens in the
+        #   child-logger's name; the colored "pkg-namespace" header
+        #   will then correctly show the same value as `name`.
+        if (
+            # XXX, TRY to remove duplication cases
+            # which get warn-logged on below!
+            (
+                # when, subpkg_path == pkg_path
+                subpkg_path
+                and
+                rname == pkg_name
+            )
+            # ) or (
+            #     # when, pkg_path == leaf_mod
+            #     pkg_path
+            #     and
+            #     leaf_mod == pkg_path
+            # )
+        ):
+            pkg_path = subpkg_path
+
+        # XXX, do some double-checks for duplication of,
+        # - root-pkg-name, already in root logger
+        # - leaf-module-name already in `{filename}` header-field
+        if (
+            _strict_debug
+            and
+            pkg_name
+            and
+            pkg_name in pkg_path
+        ):
+            _duplicate, _, pkg_path = pkg_path.partition('.')
+            if _duplicate:
+                msg: str = (
+                    f'@ {get_caller_mod()}\n'
+                    f'Duplicate pkg-name in sub-logger key?\n'
+                    f'pkg_name = {pkg_name!r}\n'
+                    f'pkg_path = {pkg_path!r}\n'
+                )
+                # assert _duplicate == rname
+                if _curr_actor_no_exc():
+                    _root_log.warning(msg)
+                else:
+                    print(
+                        f'=> tractor.log.get_logger() ERROR:\n'
+                        f'{msg}\n'
+                    )
+                # XXX, should never get here?
+                breakpoint()
+        if (
+            _strict_debug
+            and
+            leaf_mod
+            and
+            leaf_mod in pkg_path
+        ):
+            msg: str = (
+                f'@ {get_caller_mod()}\n'
+                f'Duplicate leaf-module-name in sub-logger key?\n'
+                f'leaf_mod = {leaf_mod!r}\n'
+                f'pkg_path = {pkg_path!r}\n'
+            )
+            if _curr_actor_no_exc():
+                _root_log.warning(msg)
+            else:
+                print(
+                    f'=> tractor.log.get_logger() ERROR:\n'
+                    f'{msg}\n'
+                )
+
+        # mk/get underlying (sub-)`Logger`
+        if (
+            not pkg_path
+            and
+            leaf_mod == pkg_name
+        ):
+            # breakpoint()
             log = rlog
-        else:
-            log = rlog.getChild(sub_name)
+
+        elif mk_sublog:
+            # breakpoint()
+            log = rlog.getChild(pkg_path)
 
         log.level = rlog.level
 
@@ -350,8 +636,13 @@ def get_logger(
     for name, val in CUSTOM_LEVELS.items():
         logging.addLevelName(val, name)
 
-        # ensure customs levels exist as methods
-        assert getattr(logger, name.lower()), f'Logger does not define {name}'
+        # ensure our custom adapter levels exist as methods
+        assert getattr(
+            logger,
+            name.lower()
+        ), (
+            f'Logger does not define {name}'
+        )
 
     return logger
 
@@ -425,4 +716,4 @@ def get_loglevel() -> str:
 
 
 # global module logger for tractor itself
-log: StackLevelAdapter = get_logger('tractor')
+_root_log: StackLevelAdapter = get_logger('tractor')

tractor/msg/_codec.py

@@ -68,7 +68,7 @@ from tractor.log import get_logger
 if TYPE_CHECKING:
     from tractor._context import Context
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 # TODO: unify with `MsgCodec` by making `._dec` part this?

tractor/msg/_ops.py

@@ -77,7 +77,7 @@ if TYPE_CHECKING:
     from tractor._streaming import MsgStream
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 _def_any_pldec: MsgDec[Any] = mk_dec(spec=Any)

tractor/msg/types.py

@@ -51,7 +51,7 @@ from tractor.log import get_logger
 # from tractor._addr import UnwrappedAddress
 
 
-log = get_logger('tractor.msgspec')
+log = get_logger()
 
 # type variable for the boxed payload field `.pld`
 PayloadT = TypeVar('PayloadT')
@@ -202,7 +202,10 @@ class SpawnSpec(
     # TODO: similar to the `Start` kwargs spec needed below, we need
     # a hard `Struct` def for all of these fields!
     _parent_main_data: dict
-    _runtime_vars: dict[str, Any]
+    _runtime_vars: (
+        dict[str, Any]
+        #|RuntimeVars  # !TODO
+    )
     # ^NOTE see `._state._runtime_vars: dict`
 
     # module import capability

tractor/to_asyncio.py

@@ -71,7 +71,7 @@ from outcome import (
     Outcome,
 )
 
-log: StackLevelAdapter = get_logger(__name__)
+log: StackLevelAdapter = get_logger()
 
 
 __all__ = [

tractor/trionics/_broadcast.py

@@ -42,7 +42,7 @@ from trio.lowlevel import current_task
 from msgspec import Struct
 from tractor.log import get_logger
 
-log = get_logger(__name__)
+log = get_logger()
 
 # TODO: use new type-vars syntax from 3.12
 # https://realpython.com/python312-new-features/#dedicated-type-variable-syntax

tractor/trionics/_mngrs.py

@@ -49,7 +49,7 @@ if TYPE_CHECKING:
     from tractor import ActorNursery
 
 
-log = get_logger(__name__)
+log = get_logger()
 
 # A regular invariant generic type
 T = TypeVar("T")

tractor/trionics/_taskc.py

@@ -34,7 +34,7 @@ from typing import (
 import trio
 from tractor.log import get_logger
 
-log = get_logger(__name__)
+log = get_logger()
 
 
 if TYPE_CHECKING:
@@ -246,23 +246,12 @@ async def maybe_raise_from_masking_exc(
                 type(exc_match)  # masked type
             )
 
+            # Add to masked `exc_ctx`
             if do_warn:
                 exc_ctx.add_note(note)
 
-            if (
-                do_warn
-                and
-                type(exc_match) in always_warn_on
-            ):
-                log.warning(note)
-
-            if (
-                do_warn
-                and
-                raise_unmasked
-            ):
+                # don't unmask already known "special" cases..
                 if len(masked) < 2:
-                    # don't unmask already known "special" cases..
                     if (
                         _mask_cases
                         and
@@ -283,11 +272,26 @@ async def maybe_raise_from_masking_exc(
                         )
                         raise exc_match
 
-                    raise exc_ctx from exc_match
+                    # ^?TODO, see above but, possibly unmasking sub-exc
+                    # entries if there are > 1
+                    # else:
+                    #     await pause(shield=True)
+
+                if type(exc_match) in always_warn_on:
+                    import traceback
+                    trace: list[str] = traceback.format_exception(
+                        type(exc_ctx),
+                        exc_ctx,
+                        exc_ctx.__traceback__
+                    )
+                    tb_str: str = ''.join(trace)
+                    log.warning(tb_str)
+                    # XXX, for debug
+                    # from tractor import pause
+                    # await pause(shield=True)
+
+            if raise_unmasked:
+                raise exc_ctx from exc_match
 
-                # ??TODO, see above but, possibly unmasking sub-exc
-                # entries if there are > 1
-                # else:
-                #     await pause(shield=True)
     else:
         raise

uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.11"
 
 [[package]]
@@ -329,6 +329,32 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/30/3d/64ad57c803f1fa1e963a7946b6e0fea4a70df53c1a7fed304586539c2bac/pytest-8.3.5-py3-none-any.whl", hash = "sha256:c69214aa47deac29fad6c2a4f590b9c4a9fdb16a403176fe154b79c0b4d4d820", size = 343634, upload-time = "2025-03-02T12:54:52.069Z" },
 ]
 
+[[package]]
+name = "ruff"
+version = "0.14.14"
+source = { registry = "https://pypi.org/simple" }
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+
 [[package]]
 name = "sniffio"
 version = "1.3.1"
@@ -395,6 +421,24 @@ dev = [
     { name = "typing-extensions" },
     { name = "xonsh" },
 ]
+devx = [
+    { name = "greenback" },
+    { name = "stackscope" },
+    { name = "typing-extensions" },
+]
+lint = [
+    { name = "ruff" },
+]
+repl = [
+    { name = "prompt-toolkit" },
+    { name = "psutil" },
+    { name = "pyperclip" },
+    { name = "xonsh" },
+]
+testing = [
+    { name = "pexpect" },
+    { name = "pytest" },
+]
 
 [package.metadata]
 requires-dist = [
@@ -420,6 +464,22 @@ dev = [
     { name = "typing-extensions", specifier = ">=4.14.1" },
     { name = "xonsh", specifier = ">=0.19.2" },
 ]
+devx = [
+    { name = "greenback", specifier = ">=1.2.1,<2" },
+    { name = "stackscope", specifier = ">=0.2.2,<0.3" },
+    { name = "typing-extensions", specifier = ">=4.14.1" },
+]
+lint = [{ name = "ruff", specifier = ">=0.9.6" }]
+repl = [
+    { name = "prompt-toolkit", specifier = ">=3.0.50" },
+    { name = "psutil", specifier = ">=7.0.0" },
+    { name = "pyperclip", specifier = ">=1.9.0" },
+    { name = "xonsh", specifier = ">=0.19.2" },
+]
+testing = [
+    { name = "pexpect", specifier = ">=4.9.0,<5" },
+    { name = "pytest", specifier = ">=8.3.5" },
+]
 
 [[package]]
 name = "tricycle"