Merge pull request 'Fix to trionics helper `maybe_open_nursery`' (#26) from maybe_open_nursery_fix into main

Reviewed-on: #26

.github/workflows/ci.yml

@@ -15,19 +15,18 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
 
-      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v5
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.11'
 
-      - name: Setup env
-        run: uv venv .venv --python=3.11
-
-      - name: Install
-        run: uv sync --group=dev
+      - name: Install dependencies
+        run: pip install -U . --upgrade-strategy eager -r requirements-test.txt
 
       - name: Run MyPy check
-        run: uv run mypy tractor/ --ignore-missing-imports --show-traceback
+        run: mypy tractor/ --ignore-missing-imports --show-traceback
 
   # test that we can generate a software distribution and install it
   # thus avoid missing file issues after packaging.
@@ -37,19 +36,18 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
 
-      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v5
-
-      - name: Setup env
-        run: uv venv .venv --python=3.11
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.11'
 
       - name: Build sdist
-        run: uv build --sdist
+        run: python setup.py sdist --formats=zip
 
       - name: Install sdist from .zips
-        run: uv run pip install dist/*.tar.gz
+        run: python -m pip install dist/*.zip
 
 
   testing-linux:
@@ -69,23 +67,23 @@ jobs:
         ]
 
     steps:
+
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
 
-      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v5
-
-      - name: Setup env
-        run: uv venv .venv --python=3.11
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '${{ matrix.python }}'
 
       - name: Install dependencies
-        run: uv sync --all-groups
+        run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
 
       - name: List dependencies
-        run: uv pip list
+        run: pip list
 
       - name: Run tests
-        run: uv run pytest tests/ --ignore=tests/devx --spawn-backend=${{ matrix.spawn_backend }} -rsx
+        run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rsx
 
   # We skip 3.10 on windows for now due to not having any collabs to
   # debug the CI failures. Anyone wanting to hack and solve them is very

default.nix

@@ -1,14 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-let
-  nativeBuildInputs = with pkgs; [
-    stdenv.cc.cc.lib
-    uv
-  ];
-
-in
-pkgs.mkShell {
-  inherit nativeBuildInputs;
-
-  LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath nativeBuildInputs;
-  TMPDIR = "/tmp";
-}

examples/advanced_faults/ipc_failure_during_stream.py

@@ -120,7 +120,6 @@ async def main(
     break_parent_ipc_after: int|bool = False,
     break_child_ipc_after: int|bool = False,
     pre_close: bool = False,
-    tpt_proto: str = 'tcp',
 
 ) -> None:
 
@@ -132,7 +131,6 @@ async def main(
             # a hang since it never engages due to broken IPC
             debug_mode=debug_mode,
             loglevel=loglevel,
-            enable_transports=[tpt_proto],
 
         ) as an,
     ):
@@ -147,8 +145,7 @@ async def main(
             _testing.expect_ctxc(
                 yay=(
                     break_parent_ipc_after
-                    or
-                    break_child_ipc_after
+                    or break_child_ipc_after
                 ),
                 # TODO: we CAN'T remove this right?
                 # since we need the ctxc to bubble up from either

examples/service_discovery.py

@@ -9,7 +9,7 @@ async def main(service_name):
     async with tractor.open_nursery() as an:
         await an.start_actor(service_name)
 
-        async with tractor.get_registry() as portal:
+        async with tractor.get_registry('127.0.0.1', 1616) as portal:
             print(f"Arbiter is listening on {portal.channel}")
 
         async with tractor.wait_for_actor(service_name) as sockaddr:

pyproject.toml

@@ -45,8 +45,6 @@ dependencies = [
   "pdbp>=1.6,<2", # windows only (from `pdbp`)
   # typed IPC msging
   "msgspec>=0.19.0",
-  "cffi>=1.17.1",
-  "bidict>=0.23.1",
 ]
 
 # ------ project ------
@@ -64,10 +62,6 @@ dev = [
   "pyperclip>=1.9.0",
   "prompt-toolkit>=3.0.50",
   "xonsh>=0.19.2",
-  "numpy>=2.2.4", # used for fast test sample gen
-  "mypy>=1.15.0",
-  "psutil>=7.0.0",
-  "trio-typing>=0.10.0",
 ]
 # TODO, add these with sane versions; were originally in
 # `requirements-docs.txt`..

tests/conftest.py

@@ -1,8 +1,6 @@
 """
-Top level of the testing suites!
-
+``tractor`` testing!!
 """
-from __future__ import annotations
 import sys
 import subprocess
 import os
@@ -32,11 +30,7 @@ else:
     _KILL_SIGNAL = signal.SIGKILL
     _INT_SIGNAL = signal.SIGINT
     _INT_RETURN_CODE = 1 if sys.version_info < (3, 8) else -signal.SIGINT.value
-    _PROC_SPAWN_WAIT = (
-        0.6
-        if sys.version_info < (3, 7)
-        else 0.4
-    )
+    _PROC_SPAWN_WAIT = 0.6 if sys.version_info < (3, 7) else 0.4
 
 
 no_windows = pytest.mark.skipif(
@@ -45,9 +39,7 @@ no_windows = pytest.mark.skipif(
 )
 
 
-def pytest_addoption(
-    parser: pytest.Parser,
-):
+def pytest_addoption(parser):
     parser.addoption(
         "--ll",
         action="store",
@@ -64,8 +56,7 @@ def pytest_addoption(
     )
 
     parser.addoption(
-        "--tpdb",
-        "--debug-mode",
+        "--tpdb", "--debug-mode",
         action="store_true",
         dest='tractor_debug_mode',
         # default=False,
@@ -76,17 +67,6 @@ def pytest_addoption(
         ),
     )
 
-    # provide which IPC transport protocols opting-in test suites
-    # should accumulatively run against.
-    parser.addoption(
-        "--tpt-proto",
-        nargs='+',  # accumulate-multiple-args
-        action="store",
-        dest='tpt_protos',
-        default=['tcp'],
-        help="Transport protocol to use under the `tractor.ipc.Channel`",
-    )
-
 
 def pytest_configure(config):
     backend = config.option.spawn_backend
@@ -94,7 +74,7 @@ def pytest_configure(config):
 
 
 @pytest.fixture(scope='session')
-def debug_mode(request) -> bool:
+def debug_mode(request):
     debug_mode: bool = request.config.option.tractor_debug_mode
     # if debug_mode:
     #     breakpoint()
@@ -115,43 +95,11 @@ def spawn_backend(request) -> str:
     return request.config.option.spawn_backend
 
 
-@pytest.fixture(scope='session')
-def tpt_protos(request) -> list[str]:
-
-    # allow quoting on CLI
-    proto_keys: list[str] = [
-        proto_key.replace('"', '').replace("'", "")
-        for proto_key in request.config.option.tpt_protos
-    ]
-
-    # ?TODO, eventually support multiple protos per test-sesh?
-    if len(proto_keys) > 1:
-        pytest.fail(
-            'We only support one `--tpt-proto <key>` atm!\n'
-        )
-
-    # XXX ensure we support the protocol by name via lookup!
-    for proto_key in proto_keys:
-        addr_type = tractor._addr._address_types[proto_key]
-        assert addr_type.proto_key == proto_key
-
-    yield proto_keys
-
-
-@pytest.fixture(
-    scope='session',
-    autouse=True,
-)
-def tpt_proto(
-    tpt_protos: list[str],
-) -> str:
-    proto_key: str = tpt_protos[0]
-    from tractor import _state
-    if _state._def_tpt_proto != proto_key:
-        _state._def_tpt_proto = proto_key
-    # breakpoint()
-    yield proto_key
-
+# @pytest.fixture(scope='function', autouse=True)
+# def debug_enabled(request) -> str:
+#     from tractor import _state
+#     if _state._runtime_vars['_debug_mode']:
+#         breakpoint()
 
 _ci_env: bool = os.environ.get('CI', False)
 
@@ -159,7 +107,7 @@ _ci_env: bool = os.environ.get('CI', False)
 @pytest.fixture(scope='session')
 def ci_env() -> bool:
     '''
-    Detect CI environment.
+    Detect CI envoirment.
 
     '''
     return _ci_env
@@ -167,45 +115,30 @@ def ci_env() -> bool:
 
 # TODO: also move this to `._testing` for now?
 # -[ ] possibly generalize and re-use for multi-tree spawning
-#    along with the new stuff for multi-addrs?
+#    along with the new stuff for multi-addrs in distribute_dis
+#    branch?
 #
-# choose random port at import time
-_rando_port: str = random.randint(1000, 9999)
+# choose randomly at import time
+_reg_addr: tuple[str, int] = (
+    '127.0.0.1',
+    random.randint(1000, 9999),
+)
 
 
 @pytest.fixture(scope='session')
-def reg_addr(
-    tpt_proto: str,
-) -> tuple[str, int|str]:
+def reg_addr() -> tuple[str, int]:
 
     # globally override the runtime to the per-test-session-dynamic
     # addr so that all tests never conflict with any other actor
     # tree using the default.
-    from tractor import (
-        _addr,
-    )
-    addr_type = _addr._address_types[tpt_proto]
-    def_reg_addr: tuple[str, int] = _addr._default_lo_addrs[tpt_proto]
+    from tractor import _root
+    _root._default_lo_addrs = [_reg_addr]
 
-    testrun_reg_addr: tuple[str, int]
-    match tpt_proto:
-        case 'tcp':
-            testrun_reg_addr = (
-                addr_type.def_bindspace,
-                _rando_port,
-            )
-
-        # NOTE, file-name uniqueness (no-collisions) will be based on
-        # the runtime-directory and root (pytest-proc's) pid.
-        case 'uds':
-            testrun_reg_addr = addr_type.get_random().unwrap()
-
-    assert def_reg_addr != testrun_reg_addr
-    return testrun_reg_addr
+    return _reg_addr
 
 
 def pytest_generate_tests(metafunc):
-    spawn_backend: str = metafunc.config.option.spawn_backend
+    spawn_backend = metafunc.config.option.spawn_backend
 
     if not spawn_backend:
         # XXX some weird windows bug with `pytest`?
@@ -218,53 +151,45 @@ def pytest_generate_tests(metafunc):
         'trio',
     )
 
-    # NOTE: used-to-be-used-to dyanmically parametrize tests for when
+    # NOTE: used to be used to dyanmically parametrize tests for when
     # you just passed --spawn-backend=`mp` on the cli, but now we expect
     # that cli input to be manually specified, BUT, maybe we'll do
     # something like this again in the future?
     if 'start_method' in metafunc.fixturenames:
-        metafunc.parametrize(
-            "start_method",
-            [spawn_backend],
-            scope='module',
-        )
-
-    # TODO, parametrize any `tpt_proto: str` declaring tests!
-    # proto_tpts: list[str] = metafunc.config.option.proto_tpts
-    # if 'tpt_proto' in metafunc.fixturenames:
-    #     metafunc.parametrize(
-    #         'tpt_proto',
-    #         proto_tpts,  # TODO, double check this list usage!
-    #         scope='module',
-    #     )
+        metafunc.parametrize("start_method", [spawn_backend], scope='module')
 
 
-def sig_prog(
-    proc: subprocess.Popen,
-    sig: int,
-    canc_timeout: float = 0.1,
-) -> int:
+# TODO: a way to let test scripts (like from `examples/`)
+# guarantee they won't registry addr collide!
+# @pytest.fixture
+# def open_test_runtime(
+#     reg_addr: tuple,
+# ) -> AsyncContextManager:
+#     return partial(
+#         tractor.open_nursery,
+#         registry_addrs=[reg_addr],
+#     )
+
+
+def sig_prog(proc, sig):
     "Kill the actor-process with ``sig``."
     proc.send_signal(sig)
-    time.sleep(canc_timeout)
+    time.sleep(0.1)
     if not proc.poll():
         # TODO: why sometimes does SIGINT not work on teardown?
         # seems to happen only when trace logging enabled?
         proc.send_signal(_KILL_SIGNAL)
-    ret: int = proc.wait()
+    ret = proc.wait()
     assert ret
 
 
 # TODO: factor into @cm and move to `._testing`?
 @pytest.fixture
 def daemon(
-    debug_mode: bool,
     loglevel: str,
     testdir,
     reg_addr: tuple[str, int],
-    tpt_proto: str,
-
-) -> subprocess.Popen:
+):
     '''
     Run a daemon root actor as a separate actor-process tree and
     "remote registrar" for discovery-protocol related tests.
@@ -275,100 +200,28 @@ def daemon(
         loglevel: str = 'info'
 
     code: str = (
-        "import tractor; "
-        "tractor.run_daemon([], "
-        "registry_addrs={reg_addrs}, "
-        "debug_mode={debug_mode}, "
-        "loglevel={ll})"
+            "import tractor; "
+            "tractor.run_daemon([], registry_addrs={reg_addrs}, loglevel={ll})"
     ).format(
         reg_addrs=str([reg_addr]),
         ll="'{}'".format(loglevel) if loglevel else None,
-        debug_mode=debug_mode,
     )
     cmd: list[str] = [
         sys.executable,
         '-c', code,
     ]
-    # breakpoint()
     kwargs = {}
     if platform.system() == 'Windows':
         # without this, tests hang on windows forever
         kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
 
-    proc: subprocess.Popen = testdir.popen(
+    proc = testdir.popen(
         cmd,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
         **kwargs,
     )
-
-    # UDS sockets are **really** fast to bind()/listen()/connect()
-    # so it's often required that we delay a bit more starting
-    # the first actor-tree..
-    if tpt_proto == 'uds':
-        global _PROC_SPAWN_WAIT
-        _PROC_SPAWN_WAIT = 0.6
-
-    time.sleep(_PROC_SPAWN_WAIT)
-
     assert not proc.returncode
+    time.sleep(_PROC_SPAWN_WAIT)
     yield proc
     sig_prog(proc, _INT_SIGNAL)
-
-    # XXX! yeah.. just be reaaal careful with this bc sometimes it
-    # can lock up on the `_io.BufferedReader` and hang..
-    stderr: str = proc.stderr.read().decode()
-    if stderr:
-        print(
-            f'Daemon actor tree produced STDERR:\n'
-            f'{proc.args}\n'
-            f'\n'
-            f'{stderr}\n'
-        )
-    if proc.returncode != -2:
-        raise RuntimeError(
-            'Daemon actor tree failed !?\n'
-            f'{proc.args}\n'
-        )
-
-
-# @pytest.fixture(autouse=True)
-# def shared_last_failed(pytestconfig):
-#     val = pytestconfig.cache.get("example/value", None)
-#     breakpoint()
-#     if val is None:
-#         pytestconfig.cache.set("example/value", val)
-#     return val
-
-
-# TODO: a way to let test scripts (like from `examples/`)
-# guarantee they won't `registry_addrs` collide!
-# -[ ] maybe use some kinda standard `def main()` arg-spec that
-#     we can introspect from a fixture that is called from the test
-#     body?
-# -[ ] test and figure out typing for below prototype! Bp
-#
-# @pytest.fixture
-# def set_script_runtime_args(
-#     reg_addr: tuple,
-# ) -> Callable[[...], None]:
-
-#     def import_n_partial_in_args_n_triorun(
-#         script: Path,  # under examples?
-#         **runtime_args,
-#     ) -> Callable[[], Any]:  # a `partial`-ed equiv of `trio.run()`
-
-#         # NOTE, below is taken from
-#         # `.test_advanced_faults.test_ipc_channel_break_during_stream`
-#         mod: ModuleType = import_path(
-#             examples_dir() / 'advanced_faults'
-#             / 'ipc_failure_during_stream.py',
-#             root=examples_dir(),
-#             consider_namespace_packages=False,
-#         )
-#         return partial(
-#             trio.run,
-#             partial(
-#                 mod.main,
-#                 **runtime_args,
-#             )
-#         )
-#     return import_n_partial_in_args_n_triorun

tests/test_advanced_faults.py

@@ -10,9 +10,6 @@ import pytest
 from _pytest.pathlib import import_path
 import trio
 import tractor
-from tractor import (
-    TransportClosed,
-)
 from tractor._testing import (
     examples_dir,
     break_ipc,
@@ -77,7 +74,6 @@ def test_ipc_channel_break_during_stream(
     spawn_backend: str,
     ipc_break: dict|None,
     pre_aclose_msgstream: bool,
-    tpt_proto: str,
 ):
     '''
     Ensure we can have an IPC channel break its connection during
@@ -95,7 +91,7 @@ def test_ipc_channel_break_during_stream(
         # non-`trio` spawners should never hit the hang condition that
         # requires the user to do ctl-c to cancel the actor tree.
         # expect_final_exc = trio.ClosedResourceError
-        expect_final_exc = TransportClosed
+        expect_final_exc = tractor.TransportClosed
 
     mod: ModuleType = import_path(
         examples_dir() / 'advanced_faults'
@@ -108,8 +104,6 @@ def test_ipc_channel_break_during_stream(
     # period" wherein the user eventually hits ctl-c to kill the
     # root-actor tree.
     expect_final_exc: BaseException = KeyboardInterrupt
-    expect_final_cause: BaseException|None = None
-
     if (
         # only expect EoC if trans is broken on the child side,
         ipc_break['break_child_ipc_after'] is not False
@@ -144,9 +138,6 @@ def test_ipc_channel_break_during_stream(
         # a user sending ctl-c by raising a KBI.
         if pre_aclose_msgstream:
             expect_final_exc = KeyboardInterrupt
-            if tpt_proto == 'uds':
-                expect_final_exc = TransportClosed
-                expect_final_cause = trio.BrokenResourceError
 
             # XXX OLD XXX
             # if child calls `MsgStream.aclose()` then expect EoC.
@@ -166,10 +157,6 @@ def test_ipc_channel_break_during_stream(
         if pre_aclose_msgstream:
             expect_final_exc = KeyboardInterrupt
 
-            if tpt_proto == 'uds':
-                expect_final_exc = TransportClosed
-                expect_final_cause = trio.BrokenResourceError
-
     # NOTE when the parent IPC side dies (even if the child does as well
     # but the child fails BEFORE the parent) we always expect the
     # IPC layer to raise a closed-resource, NEVER do we expect
@@ -182,8 +169,8 @@ def test_ipc_channel_break_during_stream(
         and
         ipc_break['break_child_ipc_after'] is False
     ):
+        # expect_final_exc = trio.ClosedResourceError
         expect_final_exc = tractor.TransportClosed
-        expect_final_cause = trio.ClosedResourceError
 
     # BOTH but, PARENT breaks FIRST
     elif (
@@ -194,8 +181,8 @@ def test_ipc_channel_break_during_stream(
             ipc_break['break_parent_ipc_after']
         )
     ):
+        # expect_final_exc = trio.ClosedResourceError
         expect_final_exc = tractor.TransportClosed
-        expect_final_cause = trio.ClosedResourceError
 
     with pytest.raises(
         expected_exception=(
@@ -211,7 +198,6 @@ def test_ipc_channel_break_during_stream(
                     start_method=spawn_backend,
                     loglevel=loglevel,
                     pre_close=pre_aclose_msgstream,
-                    tpt_proto=tpt_proto,
                     **ipc_break,
                 )
             )
@@ -234,15 +220,10 @@ def test_ipc_channel_break_during_stream(
                 )
             cause: Exception = tc.__cause__
             assert (
-                # type(cause) is trio.ClosedResourceError
-                type(cause) is expect_final_cause
-
-                # TODO, should we expect a certain exc-message (per
-                # tpt) as well??
-                # and
-                # cause.args[0] == 'another task closed this fd'
+                type(cause) is trio.ClosedResourceError
+                and
+                cause.args[0] == 'another task closed this fd'
             )
-
             raise
 
     # get raw instance from pytest wrapper

tests/test_discovery.py

@@ -7,9 +7,7 @@ import platform
 from functools import partial
 import itertools
 
-import psutil
 import pytest
-import subprocess
 import tractor
 from tractor._testing import tractor_test
 import trio
@@ -28,7 +26,7 @@ async def test_reg_then_unreg(reg_addr):
         portal = await n.start_actor('actor', enable_modules=[__name__])
         uid = portal.channel.uid
 
-        async with tractor.get_registry(reg_addr) as aportal:
+        async with tractor.get_registry(*reg_addr) as aportal:
             # this local actor should be the arbiter
             assert actor is aportal.actor
 
@@ -154,25 +152,15 @@ async def unpack_reg(actor_or_portal):
 async def spawn_and_check_registry(
     reg_addr: tuple,
     use_signal: bool,
-    debug_mode: bool = False,
     remote_arbiter: bool = False,
     with_streaming: bool = False,
-    maybe_daemon: tuple[
-        subprocess.Popen,
-        psutil.Process,
-    ]|None = None,
 
 ) -> None:
 
-    if maybe_daemon:
-        popen, proc = maybe_daemon
-        # breakpoint()
-
     async with tractor.open_root_actor(
         registry_addrs=[reg_addr],
-        debug_mode=debug_mode,
     ):
-        async with tractor.get_registry(reg_addr) as portal:
+        async with tractor.get_registry(*reg_addr) as portal:
             # runtime needs to be up to call this
             actor = tractor.current_actor()
 
@@ -188,11 +176,11 @@ async def spawn_and_check_registry(
                 extra = 2  # local root actor + remote arbiter
 
             # ensure current actor is registered
-            registry: dict = await get_reg()
+            registry = await get_reg()
             assert actor.uid in registry
 
             try:
-                async with tractor.open_nursery() as an:
+                async with tractor.open_nursery() as n:
                     async with trio.open_nursery(
                         strict_exception_groups=False,
                     ) as trion:
@@ -201,17 +189,17 @@ async def spawn_and_check_registry(
                         for i in range(3):
                             name = f'a{i}'
                             if with_streaming:
-                                portals[name] = await an.start_actor(
+                                portals[name] = await n.start_actor(
                                     name=name, enable_modules=[__name__])
 
                             else:  # no streaming
-                                portals[name] = await an.run_in_actor(
+                                portals[name] = await n.run_in_actor(
                                     trio.sleep_forever, name=name)
 
                         # wait on last actor to come up
                         async with tractor.wait_for_actor(name):
                             registry = await get_reg()
-                            for uid in an._children:
+                            for uid in n._children:
                                 assert uid in registry
 
                         assert len(portals) + extra == len(registry)
@@ -244,7 +232,6 @@ async def spawn_and_check_registry(
 @pytest.mark.parametrize('use_signal', [False, True])
 @pytest.mark.parametrize('with_streaming', [False, True])
 def test_subactors_unregister_on_cancel(
-    debug_mode: bool,
     start_method,
     use_signal,
     reg_addr,
@@ -261,7 +248,6 @@ def test_subactors_unregister_on_cancel(
                 spawn_and_check_registry,
                 reg_addr,
                 use_signal,
-                debug_mode=debug_mode,
                 remote_arbiter=False,
                 with_streaming=with_streaming,
             ),
@@ -271,8 +257,7 @@ def test_subactors_unregister_on_cancel(
 @pytest.mark.parametrize('use_signal', [False, True])
 @pytest.mark.parametrize('with_streaming', [False, True])
 def test_subactors_unregister_on_cancel_remote_daemon(
-    daemon: subprocess.Popen,
-    debug_mode: bool,
+    daemon,
     start_method,
     use_signal,
     reg_addr,
@@ -288,13 +273,8 @@ def test_subactors_unregister_on_cancel_remote_daemon(
                 spawn_and_check_registry,
                 reg_addr,
                 use_signal,
-                debug_mode=debug_mode,
                 remote_arbiter=True,
                 with_streaming=with_streaming,
-                maybe_daemon=(
-                    daemon,
-                    psutil.Process(daemon.pid)
-                ),
             ),
         )
 
@@ -320,7 +300,7 @@ async def close_chans_before_nursery(
     async with tractor.open_root_actor(
         registry_addrs=[reg_addr],
     ):
-        async with tractor.get_registry(reg_addr) as aportal:
+        async with tractor.get_registry(*reg_addr) as aportal:
             try:
                 get_reg = partial(unpack_reg, aportal)
 
@@ -393,7 +373,7 @@ def test_close_channel_explicit(
 
 @pytest.mark.parametrize('use_signal', [False, True])
 def test_close_channel_explicit_remote_arbiter(
-    daemon: subprocess.Popen,
+    daemon,
     start_method,
     use_signal,
     reg_addr,

tests/test_docs_examples.py

@@ -66,9 +66,6 @@ def run_example_in_subproc(
         # due to backpressure!!!
         proc = testdir.popen(
             cmdargs,
-            stdin=subprocess.PIPE,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
             **kwargs,
         )
         assert not proc.returncode
@@ -122,14 +119,10 @@ def test_example(
         code = ex.read()
 
         with run_example_in_subproc(code) as proc:
-            err = None
-            try:
-                if not proc.poll():
-                    _, err = proc.communicate(timeout=15)
-
-            except subprocess.TimeoutExpired as e:
-                proc.kill()
-                err = e.stderr
+            proc.wait()
+            err, _ = proc.stderr.read(), proc.stdout.read()
+            # print(f'STDERR: {err}')
+            # print(f'STDOUT: {out}')
 
             # if we get some gnarly output let's aggregate and raise
             if err:

tests/test_eventfd.py

@@ -1,66 +0,0 @@
-import trio
-import pytest
-from tractor.linux.eventfd import (
-    open_eventfd,
-    EFDReadCancelled,
-    EventFD
-)
-
-
-def test_read_cancellation():
-    '''
-    Ensure EventFD.read raises EFDReadCancelled if EventFD.close()
-    is called.
-
-    '''
-    fd = open_eventfd()
-
-    async def bg_read(event: EventFD):
-        with pytest.raises(EFDReadCancelled):
-            await event.read()
-
-    async def main():
-        async with trio.open_nursery() as n:
-            with (
-                EventFD(fd, 'w') as event,
-                trio.fail_after(3)
-            ):
-                n.start_soon(bg_read, event)
-                await trio.sleep(0.2)
-                event.close()
-
-    trio.run(main)
-
-
-def test_read_trio_semantics():
-    '''
-    Ensure EventFD.read raises trio.ClosedResourceError and
-    trio.BusyResourceError.
-
-    '''
-
-    fd = open_eventfd()
-
-    async def bg_read(event: EventFD):
-        try:
-            await event.read()
-
-        except EFDReadCancelled:
-            ...
-
-    async def main():
-        async with trio.open_nursery() as n:
-
-            # start background read and attempt
-            # foreground read, should be busy
-            with EventFD(fd, 'w') as event:
-                n.start_soon(bg_read, event)
-                await trio.sleep(0.2)
-                with pytest.raises(trio.BusyResourceError):
-                    await event.read()
-
-            # attempt read after close
-            with pytest.raises(trio.ClosedResourceError):
-                await event.read()
-
-    trio.run(main)

tests/test_ext_types_msgspec.py

@@ -5,7 +5,6 @@ Low-level functional audits for our
 B~)
 
 '''
-from __future__ import annotations
 from contextlib import (
     contextmanager as cm,
     # nullcontext,
@@ -21,7 +20,7 @@ from msgspec import (
     # structs,
     # msgpack,
     Raw,
-    Struct,
+    # Struct,
     ValidationError,
 )
 import pytest
@@ -47,11 +46,6 @@ from tractor.msg import (
     apply_codec,
     current_codec,
 )
-from tractor.msg._codec import (
-    default_builtins,
-    mk_dec_hook,
-    mk_codec_from_spec,
-)
 from tractor.msg.types import (
     log,
     Started,
@@ -749,143 +743,6 @@ def test_ext_types_over_ipc(
         assert exc.boxed_type is TypeError
 
 
-'''
-Test the auto enc & dec hooks
-
-Create a codec which will work for:
-    - builtins
-    - custom types
-    - lists of custom types
-'''
-
-
-class BytesTestClass(Struct, tag=True):
-    raw: bytes
-
-    def encode(self) -> bytes:
-        return self.raw
-
-    @classmethod
-    def from_bytes(self, raw: bytes) -> BytesTestClass:
-        return BytesTestClass(raw=raw)
-
-
-class StrTestClass(Struct, tag=True):
-    s: str
-
-    def encode(self) -> str:
-        return self.s
-
-    @classmethod
-    def from_str(self, s: str) -> StrTestClass:
-        return StrTestClass(s=s)
-
-
-class IntTestClass(Struct, tag=True):
-    num: int
-
-    def encode(self) -> int:
-        return self.num
-
-    @classmethod
-    def from_int(self, num: int) -> IntTestClass:
-        return IntTestClass(num=num)
-
-
-builtins = tuple((
-    builtin
-    for builtin in default_builtins
-    if builtin is not list
-))
-
-TestClasses = (BytesTestClass, StrTestClass, IntTestClass)
-
-
-TestSpec = (
-    *TestClasses, list[Union[*TestClasses]]
-)
-
-
-test_codec = mk_codec_from_spec(
-    spec=TestSpec
-)
-
-
-@tractor.context
-async def child_custom_codec(
-    ctx: tractor.Context,
-    msgs: list[Union[*TestSpec]],
-):
-    '''
-    Apply codec and send all msgs passed through stream
-
-    '''
-    with (
-        apply_codec(test_codec),
-        limit_plds(
-            test_codec.pld_spec,
-            dec_hook=mk_dec_hook(TestSpec),
-            ext_types=TestSpec + builtins
-        ),
-    ):
-        await ctx.started(None)
-        async with ctx.open_stream() as stream:
-            for msg in msgs:
-                await stream.send(msg)
-
-
-def test_multi_custom_codec():
-    '''
-    Open subactor setup codec and pld_rx and wait to receive & assert from
-    stream
-
-    '''
-    msgs = [
-        None,
-        True, False,
-        0xdeadbeef,
-        .42069,
-        b'deadbeef',
-        BytesTestClass(raw=b'deadbeef'),
-        StrTestClass(s='deadbeef'),
-        IntTestClass(num=0xdeadbeef),
-        [
-            BytesTestClass(raw=b'deadbeef'),
-            StrTestClass(s='deadbeef'),
-            IntTestClass(num=0xdeadbeef),
-        ]
-    ]
-
-    async def main():
-        async with tractor.open_nursery() as an:
-            p: tractor.Portal = await an.start_actor(
-                'child',
-                enable_modules=[__name__],
-            )
-            async with (
-                p.open_context(
-                    child_custom_codec,
-                    msgs=msgs,
-                ) as (ctx, _),
-                ctx.open_stream() as ipc
-            ):
-                with (
-                    apply_codec(test_codec),
-                    limit_plds(
-                        test_codec.pld_spec,
-                        dec_hook=mk_dec_hook(TestSpec),
-                        ext_types=TestSpec + builtins
-                    )
-                ):
-                    msg_iter = iter(msgs)
-                    async for recv_msg in ipc:
-                        assert recv_msg == next(msg_iter)
-
-            await p.cancel_actor()
-
-    trio.run(main)
-
-
 # def chk_pld_type(
 #     payload_spec: Type[Struct]|Any,
 #     pld: Any,

tests/test_inter_peer_cancellation.py

@@ -871,7 +871,7 @@ async def serve_subactors(
                 )
                 await ipc.send((
                     peer.chan.uid,
-                    peer.chan.raddr.unwrap(),
+                    peer.chan.raddr,
                 ))
 
         print('Spawner exiting spawn serve loop!')

tests/test_local.py

@@ -38,7 +38,7 @@ async def test_self_is_registered_localportal(reg_addr):
     "Verify waiting on the arbiter to register itself using a local portal."
     actor = tractor.current_actor()
     assert actor.is_arbiter
-    async with tractor.get_registry(reg_addr) as portal:
+    async with tractor.get_registry(*reg_addr) as portal:
         assert isinstance(portal, tractor._portal.LocalPortal)
 
         with trio.fail_after(0.2):

tests/test_multi_program.py

@@ -32,7 +32,7 @@ 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 with tractor.get_registry(reg_addr) as portal:
+    async with tractor.get_registry(*reg_addr) as portal:
         await portal.cancel_actor()
 
     time.sleep(0.1)
@@ -41,7 +41,7 @@ async def test_cancel_remote_arbiter(daemon, reg_addr):
 
     # no arbiter socket should exist
     with pytest.raises(OSError):
-        async with tractor.get_registry(reg_addr) as portal:
+        async with tractor.get_registry(*reg_addr) as portal:
             pass
 
 

tests/test_resource_cache.py

@@ -100,29 +100,16 @@ async def streamer(
 @acm
 async def open_stream() -> Awaitable[tractor.MsgStream]:
 
-    try:
-        async with tractor.open_nursery() as an:
-            portal = await an.start_actor(
-                'streamer',
-                enable_modules=[__name__],
-            )
-            async with (
-                portal.open_context(streamer) as (ctx, first),
-                ctx.open_stream() as stream,
-            ):
-                yield stream
+    async with tractor.open_nursery() as tn:
+        portal = await tn.start_actor('streamer', enable_modules=[__name__])
+        async with (
+            portal.open_context(streamer) as (ctx, first),
+            ctx.open_stream() as stream,
+        ):
+            yield stream
 
-            print('Cancelling streamer')
-            await portal.cancel_actor()
-            print('Cancelled streamer')
-
-    except Exception as err:
-        print(
-            f'`open_stream()` errored?\n'
-            f'{err!r}\n'
-        )
-        await tractor.pause(shield=True)
-        raise err
+        await portal.cancel_actor()
+    print('CANCELLED STREAMER')
 
 
 @acm
@@ -145,28 +132,19 @@ async def maybe_open_stream(taskname: str):
             yield stream
 
 
-def test_open_local_sub_to_stream(
-    debug_mode: bool,
-):
+def test_open_local_sub_to_stream():
     '''
     Verify a single inter-actor stream can can be fanned-out shared to
-    N local tasks using `trionics.maybe_open_context()`.
+    N local tasks using ``trionics.maybe_open_context():``.
 
     '''
-    timeout: float = 3.6
-    if platform.system() == "Windows":
-        timeout: float = 10
-
-    if debug_mode:
-        timeout = 999
+    timeout: float = 3.6 if platform.system() != "Windows" else 10
 
     async def main():
 
         full = list(range(1000))
 
         async def get_sub_and_pull(taskname: str):
-
-            stream: tractor.MsgStream
             async with (
                 maybe_open_stream(taskname) as stream,
             ):
@@ -187,27 +165,17 @@ def test_open_local_sub_to_stream(
                 assert set(seq).issubset(set(full))
             print(f'{taskname} finished')
 
-        with trio.fail_after(timeout) as cs:
+        with trio.fail_after(timeout):
             # TODO: turns out this isn't multi-task entrant XD
             # We probably need an indepotent entry semantic?
-            async with tractor.open_root_actor(
-                debug_mode=debug_mode,
-            ):
+            async with tractor.open_root_actor():
                 async with (
-                    trio.open_nursery() as tn,
+                    trio.open_nursery() as nurse,
                 ):
                     for i in range(10):
-                        tn.start_soon(
-                            get_sub_and_pull,
-                            f'task_{i}',
-                        )
+                        nurse.start_soon(get_sub_and_pull, f'task_{i}')
                         await trio.sleep(0.001)
 
                 print('all consumer tasks finished')
 
-        if cs.cancelled_caught:
-            pytest.fail(
-                'Should NOT time out in `open_root_actor()` ?'
-            )
-
     trio.run(main)

tests/test_ring_pubsub.py

@@ -1,185 +0,0 @@
-from typing import AsyncContextManager
-from contextlib import asynccontextmanager as acm
-
-import trio
-import pytest
-import tractor
-
-from tractor.trionics import gather_contexts
-
-from tractor.ipc._ringbuf import open_ringbufs
-from tractor.ipc._ringbuf._pubsub import (
-    open_ringbuf_publisher,
-    open_ringbuf_subscriber,
-    get_publisher,
-    get_subscriber,
-    open_pub_channel_at,
-    open_sub_channel_at
-)
-
-
-log = tractor.log.get_console_log(level='info')
-
-
-@tractor.context
-async def publish_range(
-    ctx: tractor.Context,
-    size: int
-):
-    pub = get_publisher()
-    await ctx.started()
-    for i in range(size):
-        await pub.send(i.to_bytes(4))
-        log.info(f'sent {i}')
-
-    await pub.flush()
-
-    log.info('range done')
-
-
-@tractor.context
-async def subscribe_range(
-    ctx: tractor.Context,
-    size: int
-):
-    sub = get_subscriber()
-    await ctx.started()
-
-    for i in range(size):
-        recv = int.from_bytes(await sub.receive())
-        if recv != i:
-            raise AssertionError(
-                f'received: {recv} expected: {i}'
-            )
-
-        log.info(f'received: {recv}')
-
-    log.info('range done')
-
-
-@tractor.context
-async def subscriber_child(ctx: tractor.Context):
-    try:
-        async with open_ringbuf_subscriber(guarantee_order=True):
-            await ctx.started()
-            await trio.sleep_forever()
-
-    finally:
-        log.info('subscriber exit')
-
-
-@tractor.context
-async def publisher_child(
-    ctx: tractor.Context,
-    batch_size: int
-):
-    try:
-        async with open_ringbuf_publisher(
-            guarantee_order=True,
-            batch_size=batch_size
-        ):
-            await ctx.started()
-            await trio.sleep_forever()
-
-    finally:
-        log.info('publisher exit')
-
-
-@acm
-async def open_pubsub_test_actors(
-
-    ring_names: list[str],
-    size: int,
-    batch_size: int
-
-) -> AsyncContextManager[tuple[tractor.Portal, tractor.Portal]]:
-
-    with trio.fail_after(5):
-        async with tractor.open_nursery(
-            enable_modules=[
-                'tractor.linux._fdshare'
-            ]
-        ) as an:
-            modules = [
-                __name__,
-                'tractor.linux._fdshare',
-                'tractor.ipc._ringbuf._pubsub'
-            ]
-            sub_portal = await an.start_actor(
-                'sub',
-                enable_modules=modules
-            )
-            pub_portal = await an.start_actor(
-                'pub',
-                enable_modules=modules
-            )
-
-            async with (
-                sub_portal.open_context(subscriber_child) as (long_rctx, _),
-                pub_portal.open_context(
-                    publisher_child,
-                    batch_size=batch_size
-                ) as (long_sctx, _),
-
-                open_ringbufs(ring_names) as tokens,
-
-                gather_contexts([
-                    open_sub_channel_at('sub', ring)
-                    for ring in tokens
-                ]),
-                gather_contexts([
-                    open_pub_channel_at('pub', ring)
-                    for ring in tokens
-                ]),
-                sub_portal.open_context(subscribe_range, size=size) as (rctx, _),
-                pub_portal.open_context(publish_range, size=size) as (sctx, _)
-            ):
-                yield
-
-                await rctx.wait_for_result()
-                await sctx.wait_for_result()
-
-                await long_sctx.cancel()
-                await long_rctx.cancel()
-
-            await an.cancel()
-
-
-@pytest.mark.parametrize(
-    ('ring_names', 'size', 'batch_size'),
-    [
-        (
-            ['ring-first'],
-            100,
-            1
-        ),
-        (
-            ['ring-first'],
-            69,
-            1
-        ),
-        (
-            [f'multi-ring-{i}' for i in range(3)],
-            1000,
-            100
-        ),
-    ],
-    ids=[
-        'simple',
-        'redo-simple',
-        'multi-ring',
-    ]
-)
-def test_pubsub(
-    request,
-    ring_names: list[str],
-    size: int,
-    batch_size: int
-):
-    async def main():
-        async with open_pubsub_test_actors(
-            ring_names, size, batch_size
-        ):
-            ...
-
-    trio.run(main)

tests/test_ringbuf.py

@@ -1,380 +0,0 @@
-import time
-import hashlib
-
-import trio
-import pytest
-
-import tractor
-from tractor.ipc._ringbuf import (
-    open_ringbuf,
-    open_ringbuf_pair,
-    attach_to_ringbuf_receiver,
-    attach_to_ringbuf_sender,
-    attach_to_ringbuf_channel,
-    RBToken,
-)
-from tractor._testing.samples import (
-    generate_single_byte_msgs,
-    RandomBytesGenerator
-)
-
-
-@tractor.context
-async def child_read_shm(
-    ctx: tractor.Context,
-    token: RBToken,
-) -> str:
-    '''
-    Sub-actor used in `test_ringbuf`.
-
-    Attach to a ringbuf and receive all messages until end of stream.
-    Keep track of how many bytes received and also calculate 
-    sha256 of the whole byte stream.
-
-    Calculate and print performance stats, finally return calculated
-    hash.
-
-    '''
-    await ctx.started()
-    print('reader started')
-    msg_amount = 0
-    recvd_bytes = 0
-    recvd_hash = hashlib.sha256()
-    start_ts = time.time()
-    async with attach_to_ringbuf_receiver(token) as receiver:
-        async for msg in receiver:
-            msg_amount += 1
-            recvd_hash.update(msg)
-            recvd_bytes += len(msg)
-
-    end_ts = time.time()
-    elapsed = end_ts - start_ts
-    elapsed_ms = int(elapsed * 1000)
-
-    print(f'\n\telapsed ms: {elapsed_ms}')
-    print(f'\tmsg/sec: {int(msg_amount / elapsed):,}')
-    print(f'\tbytes/sec: {int(recvd_bytes / elapsed):,}')
-    print(f'\treceived msgs: {msg_amount:,}')
-    print(f'\treceived bytes: {recvd_bytes:,}')
-
-    return recvd_hash.hexdigest()
-
-
-@tractor.context
-async def child_write_shm(
-    ctx: tractor.Context,
-    msg_amount: int,
-    rand_min: int,
-    rand_max: int,
-    buf_size: int
-) -> None:
-    '''
-    Sub-actor used in `test_ringbuf`
-
-    Generate `msg_amount` payloads with
-    `random.randint(rand_min, rand_max)` random bytes at the end,
-    Calculate sha256 hash and send it to parent on `ctx.started`.
-
-    Attach to ringbuf and send all generated messages.
-
-    '''
-    rng = RandomBytesGenerator(
-        msg_amount,
-        rand_min=rand_min,
-        rand_max=rand_max,
-    )
-    async with (
-        open_ringbuf('test_ringbuf', buf_size=buf_size) as token,
-        attach_to_ringbuf_sender(token) as sender
-    ):
-        await ctx.started(token)
-        print('writer started')
-        for msg in rng:
-            await sender.send(msg)
-
-            if rng.msgs_generated % rng.recommended_log_interval == 0:
-                print(f'wrote {rng.msgs_generated} msgs')
-
-    print('writer exit')
-    return rng.hexdigest
-
-
-@pytest.mark.parametrize(
-    'msg_amount,rand_min,rand_max,buf_size',
-    [
-        # simple case, fixed payloads, large buffer
-        (100_000, 0, 0, 10 * 1024),
-
-        # guaranteed wrap around on every write
-        (100, 10 * 1024, 20 * 1024, 10 * 1024),
-
-        # large payload size, but large buffer
-        (10_000, 256 * 1024, 512 * 1024, 10 * 1024 * 1024)
-    ],
-    ids=[
-        'fixed_payloads_large_buffer',
-        'wrap_around_every_write',
-        'large_payloads_large_buffer',
-    ]
-)
-def test_ringbuf(
-    msg_amount: int,
-    rand_min: int,
-    rand_max: int,
-    buf_size: int
-):
-    '''
-    - Open a new ring buf on root actor
-    - Open `child_write_shm` ctx in sub-actor which will generate a
-    random payload and send its hash on `ctx.started`, finally sending
-    the payload through the stream.
-    - Open `child_read_shm` ctx in sub-actor which will receive the
-    payload, calculate perf stats and return the hash.
-    - Compare both hashes
-
-    '''
-    async def main():
-        async with tractor.open_nursery() as an:
-            send_p = await an.start_actor(
-                'ring_sender',
-                enable_modules=[
-                    __name__,
-                    'tractor.linux._fdshare'
-                ],
-            )
-            recv_p = await an.start_actor(
-                'ring_receiver',
-                enable_modules=[
-                    __name__,
-                    'tractor.linux._fdshare'
-                ],
-            )
-            async with (
-                send_p.open_context(
-                    child_write_shm,
-                    msg_amount=msg_amount,
-                    rand_min=rand_min,
-                    rand_max=rand_max,
-                    buf_size=buf_size
-                ) as (sctx, token),
-
-                recv_p.open_context(
-                    child_read_shm,
-                    token=token,
-                ) as (rctx, _),
-            ):
-                sent_hash = await sctx.result()
-                recvd_hash = await rctx.result()
-
-                assert sent_hash == recvd_hash
-
-            await an.cancel()
-
-    trio.run(main)
-
-
-@tractor.context
-async def child_blocked_receiver(ctx: tractor.Context):
-    async with (
-        open_ringbuf('test_ring_cancel_reader') as token,
-
-        attach_to_ringbuf_receiver(token) as receiver
-    ):
-        await ctx.started(token)
-        await receiver.receive_some()
-
-
-def test_reader_cancel():
-    '''
-    Test that a receiver blocked on eventfd(2) read responds to
-    cancellation.
-
-    '''
-    async def main():
-        async with tractor.open_nursery() as an:
-            recv_p = await an.start_actor(
-                'ring_blocked_receiver',
-                enable_modules=[
-                    __name__,
-                    'tractor.linux._fdshare'
-                ],
-            )
-            async with (
-                recv_p.open_context(
-                    child_blocked_receiver,
-                ) as (sctx, token),
-
-                attach_to_ringbuf_sender(token),
-            ):
-                await trio.sleep(.1)
-                await an.cancel()
-
-
-    with pytest.raises(tractor._exceptions.ContextCancelled):
-        trio.run(main)
-
-
-@tractor.context
-async def child_blocked_sender(ctx: tractor.Context):
-    async with (
-        open_ringbuf(
-            'test_ring_cancel_sender',
-            buf_size=1
-        ) as token,
-
-        attach_to_ringbuf_sender(token) as sender
-    ):
-        await ctx.started(token)
-        await sender.send_all(b'this will wrap')
-
-
-def test_sender_cancel():
-    '''
-    Test that a sender blocked on eventfd(2) read responds to
-    cancellation.
-
-    '''
-    async def main():
-        async with tractor.open_nursery() as an:
-            recv_p = await an.start_actor(
-                'ring_blocked_sender',
-                enable_modules=[
-                    __name__,
-                    'tractor.linux._fdshare'
-                ],
-            )
-            async with (
-                recv_p.open_context(
-                    child_blocked_sender,
-                ) as (sctx, token),
-
-                attach_to_ringbuf_receiver(token)
-            ):
-                await trio.sleep(.1)
-                await an.cancel()
-
-
-    with pytest.raises(tractor._exceptions.ContextCancelled):
-        trio.run(main)
-
-
-def test_receiver_max_bytes():
-    '''
-    Test that RingBuffReceiver.receive_some's max_bytes optional
-    argument works correctly, send a msg of size 100, then
-    force receive of messages with max_bytes == 1, wait until
-    100 of these messages are received, then compare join of
-    msgs with original message
-
-    '''
-    msg = generate_single_byte_msgs(100)
-    msgs = []
-
-    rb_common = {
-        'cleanup': False,
-        'is_ipc': False
-    }
-
-    async def main():
-        async with (
-            open_ringbuf(
-                'test_ringbuf_max_bytes',
-                buf_size=10,
-                is_ipc=False
-            ) as token,
-
-            trio.open_nursery() as n,
-
-            attach_to_ringbuf_sender(token, **rb_common) as sender,
-
-            attach_to_ringbuf_receiver(token, **rb_common) as receiver
-        ):
-            async def _send_and_close():
-                await sender.send_all(msg)
-                await sender.aclose()
-
-            n.start_soon(_send_and_close)
-            while len(msgs) < len(msg):
-                msg_part = await receiver.receive_some(max_bytes=1)
-                assert len(msg_part) == 1
-                msgs.append(msg_part)
-
-    trio.run(main)
-    assert msg == b''.join(msgs)
-
-
-@tractor.context
-async def child_channel_sender(
-    ctx: tractor.Context,
-    msg_amount_min: int,
-    msg_amount_max: int,
-    token_in: RBToken,
-    token_out: RBToken
-):
-    import random
-    rng = RandomBytesGenerator(
-        random.randint(msg_amount_min, msg_amount_max),
-        rand_min=256,
-        rand_max=1024,
-    )
-    async with attach_to_ringbuf_channel(
-        token_in,
-        token_out
-    ) as chan:
-        await ctx.started()
-        for msg in rng:
-            await chan.send(msg)
-
-        await chan.send(b'bye')
-        await chan.receive()
-        return rng.hexdigest
-
-
-def test_channel():
-
-    msg_amount_min = 100
-    msg_amount_max = 1000
-
-    mods = [
-        __name__,
-        'tractor.linux._fdshare'
-    ]
-
-    async def main():
-        async with (
-            tractor.open_nursery(enable_modules=mods) as an,
-
-            open_ringbuf_pair(
-                'test_ringbuf_transport'
-            ) as (send_token, recv_token),
-
-            attach_to_ringbuf_channel(send_token, recv_token) as chan,
-        ):
-            sender = await an.start_actor(
-                'test_ringbuf_transport_sender',
-                enable_modules=mods,
-            )
-            async with (
-                sender.open_context(
-                    child_channel_sender,
-                    msg_amount_min=msg_amount_min,
-                    msg_amount_max=msg_amount_max,
-                    token_in=recv_token,
-                    token_out=send_token
-                ) as (ctx, _),
-            ):
-                recvd_hash = hashlib.sha256()
-                async for msg in chan:
-                    if msg == b'bye':
-                        await chan.send(b'bye')
-                        break
-
-                    recvd_hash.update(msg)
-
-                sent_hash = await ctx.result()
-
-                assert recvd_hash.hexdigest() == sent_hash
-
-            await an.cancel()
-
-    trio.run(main)

tests/test_root_runtime.py

@@ -1,85 +0,0 @@
-'''
-Runtime boot/init sanity.
-
-'''
-
-import pytest
-import trio
-
-import tractor
-from tractor._exceptions import RuntimeFailure
-
-
-@tractor.context
-async def open_new_root_in_sub(
-    ctx: tractor.Context,
-) -> None:
-
-    async with tractor.open_root_actor():
-        pass
-
-
-@pytest.mark.parametrize(
-    'open_root_in',
-    ['root', 'sub'],
-    ids='open_2nd_root_in={}'.format,
-)
-def test_only_one_root_actor(
-    open_root_in: str,
-    reg_addr: tuple,
-    debug_mode: bool
-):
-    '''
-    Verify we specially fail whenever more then one root actor
-    is attempted to be opened within an already opened tree.
-
-    '''
-    async def main():
-        async with tractor.open_nursery() as an:
-
-            if open_root_in == 'root':
-                async with tractor.open_root_actor(
-                    registry_addrs=[reg_addr],
-                ):
-                    pass
-
-            ptl: tractor.Portal = await an.start_actor(
-                name='bad_rooty_boi',
-                enable_modules=[__name__],
-            )
-
-            async with ptl.open_context(
-                open_new_root_in_sub,
-            ) as (ctx, first):
-                pass
-
-    if open_root_in == 'root':
-        with pytest.raises(
-            RuntimeFailure
-        ) as excinfo:
-            trio.run(main)
-
-    else:
-        with pytest.raises(
-            tractor.RemoteActorError,
-        ) as excinfo:
-            trio.run(main)
-
-        assert excinfo.value.boxed_type is RuntimeFailure
-
-
-def test_implicit_root_via_first_nursery(
-    reg_addr: tuple,
-    debug_mode: bool
-):
-    '''
-    The first `ActorNursery` open should implicitly call
-    `_root.open_root_actor()`.
-
-    '''
-    async def main():
-        async with tractor.open_nursery() as an:
-            assert an._implicit_runtime_started
-            assert tractor.current_actor().aid.name == 'root'
-
-    trio.run(main)

tests/test_shm.py

@@ -1,167 +0,0 @@
-"""
-Shared mem primitives and APIs.
-
-"""
-import uuid
-
-# import numpy
-import pytest
-import trio
-import tractor
-from tractor.ipc._shm import (
-    open_shm_list,
-    attach_shm_list,
-)
-
-
-@tractor.context
-async def child_attach_shml_alot(
-    ctx: tractor.Context,
-    shm_key: str,
-) -> None:
-
-    await ctx.started(shm_key)
-
-    # now try to attach a boatload of times in a loop..
-    for _ in range(1000):
-        shml = attach_shm_list(
-            key=shm_key,
-            readonly=False,
-        )
-        assert shml.shm.name == shm_key
-        await trio.sleep(0.001)
-
-
-def test_child_attaches_alot():
-    async def main():
-        async with tractor.open_nursery() as an:
-
-            # allocate writeable list in parent
-            key = f'shml_{uuid.uuid4()}'
-            shml = open_shm_list(
-                key=key,
-            )
-
-            portal = await an.start_actor(
-                'shm_attacher',
-                enable_modules=[__name__],
-            )
-
-            async with (
-                portal.open_context(
-                    child_attach_shml_alot,
-                    shm_key=shml.key,
-                ) as (ctx, start_val),
-            ):
-                assert start_val == key
-                await ctx.result()
-
-            await portal.cancel_actor()
-
-    trio.run(main)
-
-
-@tractor.context
-async def child_read_shm_list(
-    ctx: tractor.Context,
-    shm_key: str,
-    use_str: bool,
-    frame_size: int,
-) -> None:
-
-    # attach in child
-    shml = attach_shm_list(
-        key=shm_key,
-        # dtype=str if use_str else float,
-    )
-    await ctx.started(shml.key)
-
-    async with ctx.open_stream() as stream:
-        async for i in stream:
-            print(f'(child): reading shm list index: {i}')
-
-            if use_str:
-                expect = str(float(i))
-            else:
-                expect = float(i)
-
-            if frame_size == 1:
-                val = shml[i]
-                assert expect == val
-                print(f'(child): reading value: {val}')
-            else:
-                frame = shml[i - frame_size:i]
-                print(f'(child): reading frame: {frame}')
-
-
-@pytest.mark.parametrize(
-    'use_str',
-    [False, True],
-    ids=lambda i: f'use_str_values={i}',
-)
-@pytest.mark.parametrize(
-    'frame_size',
-    [1, 2**6, 2**10],
-    ids=lambda i: f'frame_size={i}',
-)
-def test_parent_writer_child_reader(
-    use_str: bool,
-    frame_size: int,
-):
-
-    async def main():
-        async with tractor.open_nursery(
-            # debug_mode=True,
-        ) as an:
-
-            portal = await an.start_actor(
-                'shm_reader',
-                enable_modules=[__name__],
-                debug_mode=True,
-            )
-
-            # allocate writeable list in parent
-            key = 'shm_list'
-            seq_size = int(2 * 2 ** 10)
-            shml = open_shm_list(
-                key=key,
-                size=seq_size,
-                dtype=str if use_str else float,
-                readonly=False,
-            )
-
-            async with (
-                portal.open_context(
-                    child_read_shm_list,
-                    shm_key=key,
-                    use_str=use_str,
-                    frame_size=frame_size,
-                ) as (ctx, sent),
-
-                ctx.open_stream() as stream,
-            ):
-
-                assert sent == key
-
-                for i in range(seq_size):
-
-                    val = float(i)
-                    if use_str:
-                        val = str(val)
-
-                    # print(f'(parent): writing {val}')
-                    shml[i] = val
-
-                    # only on frame fills do we
-                    # signal to the child that a frame's
-                    # worth is ready.
-                    if (i % frame_size) == 0:
-                        print(f'(parent): signalling frame full on {val}')
-                        await stream.send(i)
-                else:
-                    print(f'(parent): signalling final frame on {val}')
-                    await stream.send(i)
-
-            await portal.cancel_actor()
-
-    trio.run(main)

tests/test_spawning.py

@@ -2,7 +2,6 @@
 Spawning basics
 
 """
-from functools import partial
 from typing import (
     Any,
 )
@@ -13,99 +12,74 @@ import tractor
 
 from tractor._testing import tractor_test
 
-data_to_pass_down = {
-    'doggy': 10,
-    'kitty': 4,
-}
+data_to_pass_down = {'doggy': 10, 'kitty': 4}
 
 
 async def spawn(
-    should_be_root: bool,
+    is_arbiter: bool,
     data: dict,
     reg_addr: tuple[str, int],
-
-    debug_mode: bool = False,
 ):
+    namespaces = [__name__]
+
     await trio.sleep(0.1)
-    actor = tractor.current_actor(err_on_no_runtime=False)
 
-    if should_be_root:
-        assert actor is None  # no runtime yet
-        async with (
-            tractor.open_root_actor(
-                arbiter_addr=reg_addr,
-            ),
-            tractor.open_nursery() as an,
-        ):
-            # now runtime exists
-            actor: tractor.Actor = tractor.current_actor()
-            assert actor.is_arbiter == should_be_root
+    async with tractor.open_root_actor(
+        arbiter_addr=reg_addr,
+    ):
+        actor = tractor.current_actor()
+        assert actor.is_arbiter == is_arbiter
+        data = data_to_pass_down
 
-            # spawns subproc here
-            portal: tractor.Portal = await an.run_in_actor(
-                fn=spawn,
+        if actor.is_arbiter:
+            async with tractor.open_nursery() as nursery:
 
-                # spawning args
-                name='sub-actor',
-                enable_modules=[__name__],
+                # forks here
+                portal = await nursery.run_in_actor(
+                    spawn,
+                    is_arbiter=False,
+                    name='sub-actor',
+                    data=data,
+                    reg_addr=reg_addr,
+                    enable_modules=namespaces,
+                )
 
-                # passed to a subactor-recursive RPC invoke
-                # of this same `spawn()` fn.
-                should_be_root=False,
-                data=data_to_pass_down,
-                reg_addr=reg_addr,
-            )
-
-            assert len(an._children) == 1
-            assert (
-                portal.channel.uid
-                in
-                tractor.current_actor().ipc_server._peers
-            )
-
-            # get result from child subactor
-            result = await portal.result()
-            assert result == 10
-            return result
-    else:
-        assert actor.is_arbiter == should_be_root
-        return 10
+                assert len(nursery._children) == 1
+                assert portal.channel.uid in tractor.current_actor()._peers
+                # be sure we can still get the result
+                result = await portal.result()
+                assert result == 10
+                return result
+        else:
+            return 10
 
 
-def test_run_in_actor_same_func_in_child(
-    reg_addr: tuple,
-    debug_mode: bool,
+def test_local_arbiter_subactor_global_state(
+    reg_addr,
 ):
     result = trio.run(
-        partial(
-            spawn,
-            should_be_root=True,
-            data=data_to_pass_down,
-            reg_addr=reg_addr,
-            debug_mode=debug_mode,
-        )
+        spawn,
+        True,
+        data_to_pass_down,
+        reg_addr,
     )
     assert result == 10
 
 
 async def movie_theatre_question():
-    '''
-    A question asked in a dark theatre, in a tangent
+    """A question asked in a dark theatre, in a tangent
     (errr, I mean different) process.
-
-    '''
+    """
     return 'have you ever seen a portal?'
 
 
 @tractor_test
 async def test_movie_theatre_convo(start_method):
-    '''
-    The main ``tractor`` routine.
+    """The main ``tractor`` routine.
+    """
+    async with tractor.open_nursery() as n:
 
-    '''
-    async with tractor.open_nursery(debug_mode=True) as an:
-
-        portal = await an.start_actor(
+        portal = await n.start_actor(
             'frank',
             # enable the actor to run funcs from this current module
             enable_modules=[__name__],
@@ -144,8 +118,8 @@ async def test_most_beautiful_word(
     with trio.fail_after(1):
         async with tractor.open_nursery(
             debug_mode=debug_mode,
-        ) as an:
-            portal = await an.run_in_actor(
+        ) as n:
+            portal = await n.run_in_actor(
                 cellar_door,
                 return_value=return_value,
                 name='some_linguist',

tests/test_trioisms.py

@@ -180,8 +180,7 @@ def test_acm_embedded_nursery_propagates_enter_err(
         with tractor.devx.maybe_open_crash_handler(
             pdb=debug_mode,
         ) as bxerr:
-            if bxerr:
-                assert not bxerr.value
+            assert not bxerr.value
 
             async with (
                 wraps_tn_that_always_cancels() as tn,

tractor/__init__.py

@@ -64,7 +64,7 @@ from ._root import (
     run_daemon as run_daemon,
     open_root_actor as open_root_actor,
 )
-from .ipc import Channel as Channel
+from ._ipc import Channel as Channel
 from ._portal import Portal as Portal
 from ._runtime import Actor as Actor
 # from . import hilevel as hilevel

tractor/_addr.py

@@ -1,282 +0,0 @@
-# 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/>.
-from __future__ import annotations
-from uuid import uuid4
-from typing import (
-    Protocol,
-    ClassVar,
-    Type,
-    TYPE_CHECKING,
-)
-
-from bidict import bidict
-from trio import (
-    SocketListener,
-)
-
-from .log import get_logger
-from ._state import (
-    _def_tpt_proto,
-)
-from .ipc._tcp import TCPAddress
-from .ipc._uds import UDSAddress
-
-if TYPE_CHECKING:
-    from ._runtime import Actor
-
-log = get_logger(__name__)
-
-
-# TODO, maybe breakout the netns key to a struct?
-# class NetNs(Struct)[str, int]:
-#     ...
-
-# TODO, can't we just use a type alias
-# for this? namely just some `tuple[str, int, str, str]`?
-#
-# -[ ] would also just be simpler to keep this as SockAddr[tuple]
-#     or something, implying it's just a simple pair of values which can
-#     presumably be mapped to all transports?
-# -[ ] `pydoc socket.socket.getsockname()` delivers a 4-tuple for
-#     ipv6 `(hostaddr, port, flowinfo, scope_id)`.. so how should we
-#     handle that?
-# -[ ] as a further alternative to this wrap()/unwrap() approach we
-#     could just implement `enc/dec_hook()`s for the `Address`-types
-#     and just deal with our internal objs directly and always and
-#     leave it to the codec layer to figure out marshalling?
-#    |_ would mean only one spot to do the `.unwrap()` (which we may
-#       end up needing to call from the hook()s anyway?)
-# -[x] rename to `UnwrappedAddress[Descriptor]` ??
-#    seems like the right name as per,
-#    https://www.geeksforgeeks.org/introduction-to-address-descriptor/
-#
-UnwrappedAddress = (
-    # tcp/udp/uds
-    tuple[
-        str,  # host/domain(tcp), filesys-dir(uds)
-        int|str,  # port/path(uds)
-    ]
-    # ?TODO? should we also include another 2 fields from
-    # our `Aid` msg such that we include the runtime `Actor.uid`
-    # of `.name` and `.uuid`?
-    # - would ensure uniqueness across entire net?
-    # - allows for easier runtime-level filtering of "actors by
-    #   service name"
-)
-
-
-# TODO, maybe rename to `SocketAddress`?
-class Address(Protocol):
-    proto_key: ClassVar[str]
-    unwrapped_type: ClassVar[UnwrappedAddress]
-
-    # TODO, i feel like an `.is_bound()` is a better thing to
-    # support?
-    # Lke, what use does this have besides a noop and if it's not
-    # valid why aren't we erroring on creation/use?
-    @property
-    def is_valid(self) -> bool:
-        ...
-
-    # TODO, maybe `.netns` is a better name?
-    @property
-    def namespace(self) -> tuple[str, int]|None:
-        '''
-        The if-available, OS-specific "network namespace" key.
-
-        '''
-        ...
-
-    @property
-    def bindspace(self) -> str:
-        '''
-        Deliver the socket address' "bindable space" from
-        a `socket.socket.bind()` and thus from the perspective of
-        specific transport protocol domain.
-
-        I.e. for most (layer-4) network-socket protocols this is
-        normally the ipv4/6 address, for UDS this is normally
-        a filesystem (sub-directory).
-
-        For (distributed) network protocols this is normally the routing
-        layer's domain/(ip-)address, though it might also include a "network namespace"
-        key different then the default.
-
-        For local-host-only transports this is either an explicit
-        namespace (with types defined by the OS: netns, Cgroup, IPC,
-        pid, etc. on linux) or failing that the sub-directory in the
-        filesys in which socket/shm files are located *under*.
-
-        '''
-        ...
-
-    @classmethod
-    def from_addr(cls, addr: UnwrappedAddress) -> Address:
-        ...
-
-    def unwrap(self) -> UnwrappedAddress:
-        '''
-        Deliver the underying minimum field set in
-        a primitive python data type-structure.
-        '''
-        ...
-
-    @classmethod
-    def get_random(
-        cls,
-        current_actor: Actor,
-        bindspace: str|None = None,
-    ) -> Address:
-        ...
-
-    # TODO, this should be something like a `.get_def_registar_addr()`
-    # or similar since,
-    # - it should be a **host singleton** (not root/tree singleton)
-    # - we **only need this value** when one isn't provided to the
-    #   runtime at boot and we want to implicitly provide a host-wide
-    #   registrar.
-    # - each rooted-actor-tree should likely have its own
-    #   micro-registry (likely the root being it), also see
-    @classmethod
-    def get_root(cls) -> Address:
-        ...
-
-    def __repr__(self) -> str:
-        ...
-
-    def __eq__(self, other) -> bool:
-        ...
-
-    async def open_listener(
-        self,
-        **kwargs,
-    ) -> SocketListener:
-        ...
-
-    async def close_listener(self):
-        ...
-
-
-_address_types: bidict[str, Type[Address]] = {
-    'tcp': TCPAddress,
-    'uds': UDSAddress
-}
-
-
-# TODO! really these are discovery sys default addrs ONLY useful for
-# when none is provided to a root actor on first boot.
-_default_lo_addrs: dict[
-    str,
-    UnwrappedAddress
-] = {
-    'tcp': TCPAddress.get_root().unwrap(),
-    'uds': UDSAddress.get_root().unwrap(),
-}
-
-
-def get_address_cls(name: str) -> Type[Address]:
-    return _address_types[name]
-
-
-def is_wrapped_addr(addr: any) -> bool:
-    return type(addr) in _address_types.values()
-
-
-def mk_uuid() -> str:
-    '''
-    Encapsulate creation of a uuid4 as `str` as used
-    for creating `Actor.uid: tuple[str, str]` and/or
-    `.msg.types.Aid`.
-
-    '''
-    return str(uuid4())
-
-
-def wrap_address(
-    addr: UnwrappedAddress
-) -> Address:
-    '''
-    Wrap an `UnwrappedAddress` as an `Address`-type based
-    on matching builtin python data-structures which we adhoc
-    use for each.
-
-    XXX NOTE, careful care must be placed to ensure
-    `UnwrappedAddress` cases are **definitely unique** otherwise the
-    wrong transport backend may be loaded and will break many
-    low-level things in our runtime in a not-fun-to-debug way!
-
-    XD
-
-    '''
-    if is_wrapped_addr(addr):
-        return addr
-
-    cls: Type|None = None
-    # if 'sock' in addr[0]:
-    #     import pdbp; pdbp.set_trace()
-    match addr:
-
-        # classic network socket-address as tuple/list
-        case (
-            (str(), int())
-            |
-            [str(), int()]
-        ):
-            cls = TCPAddress
-
-        case (
-            # (str()|Path(), str()|Path()),
-            # ^TODO? uhh why doesn't this work!?
-
-            (_, filename)
-        ) if type(filename) is str:
-            cls = UDSAddress
-
-        # likely an unset UDS or TCP reg address as defaulted in
-        # `_state._runtime_vars['_root_mailbox']`
-        #
-        # TODO? figure out when/if we even need this?
-        case (
-            None
-            |
-            [None, None]
-        ):
-            cls: Type[Address] = get_address_cls(_def_tpt_proto)
-            addr: UnwrappedAddress = cls.get_root().unwrap()
-
-        case _:
-            # import pdbp; pdbp.set_trace()
-            raise TypeError(
-                f'Can not wrap unwrapped-address ??\n'
-                f'type(addr): {type(addr)!r}\n'
-                f'addr: {addr!r}\n'
-            )
-
-    return cls.from_addr(addr)
-
-
-def default_lo_addrs(
-    transports: list[str],
-) -> list[Type[Address]]:
-    '''
-    Return the default, host-singleton, registry address
-    for an input transport key set.
-
-    '''
-    return [
-        _default_lo_addrs[transport]
-        for transport in transports
-    ]

tractor/_child.py

@@ -31,12 +31,8 @@ def parse_uid(arg):
     return str(name), str(uuid)  # ensures str encoding
 
 def parse_ipaddr(arg):
-    try:
-        return literal_eval(arg)
-
-    except (ValueError, SyntaxError):
-        # UDS: try to interpret as a straight up str
-        return arg
+    host, port = literal_eval(arg)
+    return (str(host), int(port))
 
 
 if __name__ == "__main__":
@@ -50,8 +46,8 @@ if __name__ == "__main__":
     args = parser.parse_args()
 
     subactor = Actor(
-        name=args.uid[0],
-        uuid=args.uid[1],
+        args.uid[0],
+        uid=args.uid[1],
         loglevel=args.loglevel,
         spawn_method="trio"
     )

tractor/_context.py

@@ -89,7 +89,7 @@ from .msg import (
     pretty_struct,
     _ops as msgops,
 )
-from .ipc import (
+from ._ipc import (
     Channel,
 )
 from ._streaming import (
@@ -105,7 +105,7 @@ from ._state import (
 if TYPE_CHECKING:
     from ._portal import Portal
     from ._runtime import Actor
-    from .ipc._transport import MsgTransport
+    from ._ipc import MsgTransport
     from .devx._frame_stack import (
         CallerInfo,
     )
@@ -366,7 +366,7 @@ class Context:
             # f'   ---\n'
             f' |_ipc: {self.dst_maddr}\n'
             # f'   dst_maddr{ds}{self.dst_maddr}\n'
-            f"   uid{ds}'{self.chan.aid}'\n"
+            f"   uid{ds}'{self.chan.uid}'\n"
             f"   cid{ds}'{self.cid}'\n"
             # f'   ---\n'
             f'\n'
@@ -859,10 +859,19 @@ class Context:
     @property
     def dst_maddr(self) -> str:
         chan: Channel = self.chan
+        dst_addr, dst_port = chan.raddr
         trans: MsgTransport = chan.transport
         # cid: str = self.cid
         # cid_head, cid_tail = cid[:6], cid[-6:]
-        return trans.maddr
+        return (
+            f'/ipv4/{dst_addr}'
+            f'/{trans.name_key}/{dst_port}'
+            # f'/{self.chan.uid[0]}'
+            # f'/{self.cid}'
+
+            # f'/cid={cid_head}..{cid_tail}'
+            # TODO: ? not use this ^ right ?
+        )
 
     dmaddr = dst_maddr
 
@@ -945,10 +954,10 @@ class Context:
         reminfo: str = (
             # ' =>\n'
             # f'Context.cancel() => {self.chan.uid}\n'
-            f'\n'
             f'c)=> {self.chan.uid}\n'
-            f'   |_[{self.dst_maddr}\n'
-            f'     >>{self.repr_rpc}\n'
+            # f'{self.chan.uid}\n'
+            f'  |_ @{self.dst_maddr}\n'
+            f'    >> {self.repr_rpc}\n'
             # f'    >> {self._nsf}() -> {codec}[dict]:\n\n'
             # TODO: pull msg-type from spec re #320
         )

tractor/_discovery.py

@@ -29,12 +29,7 @@ from contextlib import asynccontextmanager as acm
 
 from tractor.log import get_logger
 from .trionics import gather_contexts
-from .ipc import _connect_chan, Channel
-from ._addr import (
-    UnwrappedAddress,
-    Address,
-    wrap_address
-)
+from ._ipc import _connect_chan, Channel
 from ._portal import (
     Portal,
     open_portal,
@@ -43,12 +38,10 @@ from ._portal import (
 from ._state import (
     current_actor,
     _runtime_vars,
-    _def_tpt_proto,
 )
 
 if TYPE_CHECKING:
     from ._runtime import Actor
-    from .ipc._server import IPCServer
 
 
 log = get_logger(__name__)
@@ -56,7 +49,9 @@ log = get_logger(__name__)
 
 @acm
 async def get_registry(
-    addr: UnwrappedAddress|None = None,
+    host: str,
+    port: int,
+
 ) -> AsyncGenerator[
     Portal | LocalPortal | None,
     None,
@@ -74,15 +69,13 @@ async def get_registry(
         # (likely a re-entrant call from the arbiter actor)
         yield LocalPortal(
             actor,
-            Channel(transport=None)
-            # ^XXX, we DO NOT actually provide nor connect an
-            # underlying transport since this is merely an API shim.
+            Channel((host, port))
         )
     else:
         # TODO: try to look pre-existing connection from
-        # `IPCServer._peers` and use it instead?
+        # `Actor._peers` and use it instead?
         async with (
-            _connect_chan(addr) as chan,
+            _connect_chan(host, port) as chan,
             open_portal(chan) as regstr_ptl,
         ):
             yield regstr_ptl
@@ -96,10 +89,11 @@ async def get_root(
 
     # TODO: rename mailbox to `_root_maddr` when we finally
     # add and impl libp2p multi-addrs?
-    addr = _runtime_vars['_root_mailbox']
+    host, port = _runtime_vars['_root_mailbox']
+    assert host is not None
 
     async with (
-        _connect_chan(addr) as chan,
+        _connect_chan(host, port) as chan,
         open_portal(chan, **kwargs) as portal,
     ):
         yield portal
@@ -112,22 +106,22 @@ def get_peer_by_name(
 ) -> list[Channel]|None:  # at least 1
     '''
     Scan for an existing connection (set) to a named actor
-    and return any channels from `IPCServer._peers: dict`.
+    and return any channels from `Actor._peers`.
 
     This is an optimization method over querying the registrar for
     the same info.
 
     '''
     actor: Actor = current_actor()
-    server: IPCServer = actor.ipc_server
-    to_scan: dict[tuple, list[Channel]] = server._peers.copy()
+    to_scan: dict[tuple, list[Channel]] = actor._peers.copy()
 
     # TODO: is this ever needed? creates a duplicate channel on actor._peers
     # when multiple find_actor calls are made to same actor from a single ctx
     # which causes actor exit to hang waiting forever on
     # `actor._no_more_peers.wait()` in `_runtime.async_main`
+
     # pchan: Channel|None = actor._parent_chan
-    # if pchan:
+    # if pchan and pchan.uid not in to_scan:
     #     to_scan[pchan.uid].append(pchan)
 
     for aid, chans in to_scan.items():
@@ -146,10 +140,10 @@ def get_peer_by_name(
 @acm
 async def query_actor(
     name: str,
-    regaddr: UnwrappedAddress|None = None,
+    regaddr: tuple[str, int]|None = None,
 
 ) -> AsyncGenerator[
-    UnwrappedAddress|None,
+    tuple[str, int]|None,
     None,
 ]:
     '''
@@ -175,31 +169,31 @@ async def query_actor(
         return
 
     reg_portal: Portal
-    regaddr: Address = wrap_address(regaddr) or actor.reg_addrs[0]
-    async with get_registry(regaddr) as reg_portal:
+    regaddr: tuple[str, int] = regaddr or actor.reg_addrs[0]
+    async with get_registry(*regaddr) as reg_portal:
         # TODO: return portals to all available actors - for now
         # just the last one that registered
-        addr: UnwrappedAddress = await reg_portal.run_from_ns(
+        sockaddr: tuple[str, int] = await reg_portal.run_from_ns(
             'self',
             'find_actor',
             name=name,
         )
-        yield addr
+        yield sockaddr
 
 
 @acm
 async def maybe_open_portal(
-    addr: UnwrappedAddress,
+    addr: tuple[str, int],
     name: str,
 ):
     async with query_actor(
         name=name,
         regaddr=addr,
-    ) as addr:
+    ) as sockaddr:
         pass
 
-    if addr:
-        async with _connect_chan(addr) as chan:
+    if sockaddr:
+        async with _connect_chan(*sockaddr) as chan:
             async with open_portal(chan) as portal:
                 yield portal
     else:
@@ -209,8 +203,7 @@ async def maybe_open_portal(
 @acm
 async def find_actor(
     name: str,
-    registry_addrs: list[UnwrappedAddress]|None = None,
-    enable_transports: list[str] = [_def_tpt_proto],
+    registry_addrs: list[tuple[str, int]]|None = None,
 
     only_first: bool = True,
     raise_on_none: bool = False,
@@ -237,15 +230,15 @@ async def find_actor(
         # XXX NOTE: make sure to dynamically read the value on
         # every call since something may change it globally (eg.
         # like in our discovery test suite)!
-        from ._addr import default_lo_addrs
+        from . import _root
         registry_addrs = (
             _runtime_vars['_registry_addrs']
             or
-            default_lo_addrs(enable_transports)
+            _root._default_lo_addrs
         )
 
     maybe_portals: list[
-        AsyncContextManager[UnwrappedAddress]
+        AsyncContextManager[tuple[str, int]]
     ] = list(
         maybe_open_portal(
             addr=addr,
@@ -287,7 +280,7 @@ async def find_actor(
 @acm
 async def wait_for_actor(
     name: str,
-    registry_addr: UnwrappedAddress | None = None,
+    registry_addr: tuple[str, int] | None = None,
 
 ) -> AsyncGenerator[Portal, None]:
     '''
@@ -304,7 +297,7 @@ async def wait_for_actor(
             yield peer_portal
             return
 
-    regaddr: UnwrappedAddress = (
+    regaddr: tuple[str, int] = (
         registry_addr
         or
         actor.reg_addrs[0]
@@ -312,8 +305,8 @@ async def wait_for_actor(
     # TODO: use `.trionics.gather_contexts()` like
     # above in `find_actor()` as well?
     reg_portal: Portal
-    async with get_registry(regaddr) as reg_portal:
-        addrs = await reg_portal.run_from_ns(
+    async with get_registry(*regaddr) as reg_portal:
+        sockaddrs = await reg_portal.run_from_ns(
             'self',
             'wait_for_actor',
             name=name,
@@ -321,8 +314,8 @@ async def wait_for_actor(
 
         # get latest registered addr by default?
         # TODO: offer multi-portal yields in multi-homed case?
-        addr: UnwrappedAddress = addrs[-1]
+        sockaddr: tuple[str, int] = sockaddrs[-1]
 
-        async with _connect_chan(addr) as chan:
+        async with _connect_chan(*sockaddr) as chan:
             async with open_portal(chan) as portal:
                 yield portal

tractor/_entry.py

@@ -37,7 +37,6 @@ from .log import (
 from . import _state
 from .devx import _debug
 from .to_asyncio import run_as_asyncio_guest
-from ._addr import UnwrappedAddress
 from ._runtime import (
     async_main,
     Actor,
@@ -53,10 +52,10 @@ log = get_logger(__name__)
 def _mp_main(
 
     actor: Actor,
-    accept_addrs: list[UnwrappedAddress],
+    accept_addrs: list[tuple[str, int]],
     forkserver_info: tuple[Any, Any, Any, Any, Any],
     start_method: SpawnMethodKey,
-    parent_addr: UnwrappedAddress | None = None,
+    parent_addr: tuple[str, int] | None = None,
     infect_asyncio: bool = False,
 
 ) -> None:
@@ -207,7 +206,7 @@ def nest_from_op(
 def _trio_main(
     actor: Actor,
     *,
-    parent_addr: UnwrappedAddress|None = None,
+    parent_addr: tuple[str, int] | None = None,
     infect_asyncio: bool = False,
 
 ) -> None:

tractor/_exceptions.py

@@ -23,6 +23,7 @@ import builtins
 import importlib
 from pprint import pformat
 from pdb import bdb
+import sys
 from types import (
     TracebackType,
 )
@@ -64,29 +65,15 @@ if TYPE_CHECKING:
     from ._context import Context
     from .log import StackLevelAdapter
     from ._stream import MsgStream
-    from .ipc import Channel
+    from ._ipc import Channel
 
 log = get_logger('tractor')
 
 _this_mod = importlib.import_module(__name__)
 
 
-class RuntimeFailure(RuntimeError):
-    '''
-    General `Actor`-runtime failure due to,
-
-    - a bad runtime-env,
-    - falied spawning (bad input to process),
-    -   API usage.
-
-    '''
-
-
-class ActorFailure(RuntimeFailure):
-    '''
-    `Actor` failed to boot before/after spawn
-
-    '''
+class ActorFailure(Exception):
+    "General actor failure"
 
 
 class InternalError(RuntimeError):
@@ -139,12 +126,6 @@ class TrioTaskExited(Exception):
     '''
 
 
-class DebugRequestError(RuntimeError):
-    '''
-    Failed to request stdio lock from root actor!
-
-    '''
-
 # NOTE: more or less should be close to these:
 # 'boxed_type',
 # 'src_type',
@@ -210,8 +191,6 @@ def get_err_type(type_name: str) -> BaseException|None:
         ):
             return type_ref
 
-    return None
-
 
 def pack_from_raise(
     local_err: (
@@ -542,6 +521,7 @@ class RemoteActorError(Exception):
             if val:
                 _repr += f'{key}={val_str}{end_char}'
 
+
         return _repr
 
     def reprol(self) -> str:
@@ -620,9 +600,56 @@ class RemoteActorError(Exception):
             the type name is already implicitly shown by python).
 
         '''
+        header: str = ''
+        body: str = ''
+        message: str = ''
+
+        # XXX when the currently raised exception is this instance,
+        # we do not ever use the "type header" style repr.
+        is_being_raised: bool = False
+        if (
+            (exc := sys.exception())
+            and
+            exc is self
+        ):
+            is_being_raised: bool = True
+
+        with_type_header: bool = (
+            with_type_header
+            and
+            not is_being_raised
+        )
+
+        # <RemoteActorError( .. )> style
+        if with_type_header:
+            header: str = f'<{type(self).__name__}('
+
+        if message := self._message:
+
+            # split off the first line so, if needed, it isn't
+            # indented the same like the "boxed content" which
+            # since there is no `.tb_str` is just the `.message`.
+            lines: list[str] = message.splitlines()
+            first: str = lines[0]
+            message: str = message.removeprefix(first)
+
+            # with a type-style header we,
+            # - have no special message "first line" extraction/handling
+            # - place the message a space in from the header:
+            #  `MsgTypeError( <message> ..`
+            #                 ^-here
+            # - indent the `.message` inside the type body.
+            if with_type_header:
+                first = f' {first} )>'
+
+            message: str = textwrap.indent(
+                message,
+                prefix=' '*2,
+            )
+            message: str = first + message
+
         # 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
@@ -643,15 +670,21 @@ class RemoteActorError(Exception):
                 boxer_header=self.relay_uid,
             )
 
-        # !TODO, it'd be nice to import these top level without
-        # cycles!
-        from tractor.devx.pformat import (
-            pformat_exc,
-        )
-        return pformat_exc(
-            exc=self,
-            with_type_header=with_type_header,
-            body=body,
+        tail = ''
+        if (
+            with_type_header
+            and not message
+        ):
+            tail: str = '>'
+
+        return (
+            header
+            +
+            message
+            +
+            f'{body}'
+            +
+            tail
         )
 
     __repr__ = pformat
@@ -929,7 +962,7 @@ class StreamOverrun(
     '''
 
 
-class TransportClosed(Exception):
+class TransportClosed(trio.BrokenResourceError):
     '''
     IPC transport (protocol) connection was closed or broke and
     indicates that the wrapping communication `Channel` can no longer
@@ -940,39 +973,24 @@ class TransportClosed(Exception):
         self,
         message: str,
         loglevel: str = 'transport',
-        src_exc: Exception|None = None,
+        cause: BaseException|None = None,
         raise_on_report: bool = False,
 
     ) -> None:
         self.message: str = message
-        self._loglevel: str = loglevel
+        self._loglevel = loglevel
         super().__init__(message)
 
-        self._src_exc = src_exc
-        # set the cause manually if not already set by python
-        if (
-            src_exc is not None
-            and
-            not self.__cause__
-        ):
-            self.__cause__ = src_exc
+        if cause is not None:
+            self.__cause__ = cause
 
         # flag to toggle whether the msg loop should raise
         # the exc in its `TransportClosed` handler block.
         self._raise_on_report = raise_on_report
 
-    @property
-    def src_exc(self) -> Exception:
-        return (
-            self.__cause__
-            or
-            self._src_exc
-        )
-
     def report_n_maybe_raise(
         self,
         message: str|None = None,
-        hide_tb: bool = True,
 
     ) -> None:
         '''
@@ -980,10 +998,9 @@ class TransportClosed(Exception):
         for this error.
 
         '''
-        __tracebackhide__: bool = hide_tb
         message: str = message or self.message
         # when a cause is set, slap it onto the log emission.
-        if cause := self.src_exc:
+        if cause := self.__cause__:
             cause_tb_str: str = ''.join(
                 traceback.format_tb(cause.__traceback__)
             )
@@ -992,86 +1009,13 @@ class TransportClosed(Exception):
                 f'    {cause}\n'  # exc repr
             )
 
-        getattr(
-            log,
-            self._loglevel
-        )(message)
+        getattr(log, self._loglevel)(message)
 
         # some errors we want to blow up from
         # inside the RPC msg loop
         if self._raise_on_report:
             raise self from cause
 
-    @classmethod
-    def repr_src_exc(
-        self,
-        src_exc: Exception|None = None,
-    ) -> str:
-
-        if src_exc is None:
-            return '<unknown>'
-
-        src_msg: tuple[str] = src_exc.args
-        src_exc_repr: str = (
-            f'{type(src_exc).__name__}[ {src_msg} ]'
-        )
-        return src_exc_repr
-
-    def pformat(self) -> str:
-        from tractor.devx.pformat import (
-            pformat_exc,
-        )
-        return pformat_exc(
-            exc=self,
-        )
-
-    # delegate to `str`-ified pformat
-    __repr__ = pformat
-
-    @classmethod
-    def from_src_exc(
-        cls,
-        src_exc: (
-            Exception|
-            trio.ClosedResource|
-            trio.BrokenResourceError
-        ),
-        message: str,
-        body: str = '',
-        **init_kws,
-    ) -> TransportClosed:
-        '''
-        Convenience constructor for creation from an underlying
-        `trio`-sourced async-resource/chan/stream error.
-
-        Embeds the original `src_exc`'s repr within the
-        `Exception.args` via a first-line-in-`.message`-put-in-header
-        pre-processing and allows inserting additional content beyond
-        the main message via a `body: str`.
-
-        '''
-        repr_src_exc: str = cls.repr_src_exc(
-            src_exc,
-        )
-        next_line: str = f'  src_exc: {repr_src_exc}\n'
-        if body:
-            body: str = textwrap.indent(
-                body,
-                prefix=' '*2,
-            )
-
-        return TransportClosed(
-            message=(
-                message
-                +
-                next_line
-                +
-                body
-            ),
-            src_exc=src_exc,
-            **init_kws,
-        )
-
 
 class NoResult(RuntimeError):
     "No final result is expected for this actor"

tractor/_ipc.py

@@ -0,0 +1,820 @@
+# 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/>.
+
+"""
+Inter-process comms abstractions
+
+"""
+from __future__ import annotations
+from collections.abc import (
+    AsyncGenerator,
+    AsyncIterator,
+)
+from contextlib import (
+    asynccontextmanager as acm,
+    contextmanager as cm,
+)
+import platform
+from pprint import pformat
+import struct
+import typing
+from typing import (
+    Any,
+    Callable,
+    runtime_checkable,
+    Protocol,
+    Type,
+    TypeVar,
+)
+
+import msgspec
+from tricycle import BufferedReceiveStream
+import trio
+
+from tractor.log import get_logger
+from tractor._exceptions import (
+    MsgTypeError,
+    pack_from_raise,
+    TransportClosed,
+    _mk_send_mte,
+    _mk_recv_mte,
+)
+from tractor.msg import (
+    _ctxvar_MsgCodec,
+    # _codec,  XXX see `self._codec` sanity/debug checks
+    MsgCodec,
+    types as msgtypes,
+    pretty_struct,
+)
+
+log = get_logger(__name__)
+
+_is_windows = platform.system() == 'Windows'
+
+
+def get_stream_addrs(
+    stream: trio.SocketStream
+) -> tuple[
+    tuple[str, int],  # local
+    tuple[str, int],  # remote
+]:
+    '''
+    Return the `trio` streaming transport prot's socket-addrs for
+    both the local and remote sides as a pair.
+
+    '''
+    # rn, should both be IP sockets
+    lsockname = stream.socket.getsockname()
+    rsockname = stream.socket.getpeername()
+    return (
+        tuple(lsockname[:2]),
+        tuple(rsockname[:2]),
+    )
+
+
+# from tractor.msg.types import MsgType
+# ?TODO? this should be our `Union[*msgtypes.__spec__]` alias now right..?
+# => BLEH, except can't bc prots must inherit typevar or param-spec
+#   vars..
+MsgType = TypeVar('MsgType')
+
+
+# TODO: break up this mod into a subpkg so we can start adding new
+# backends and move this type stuff into a dedicated file.. Bo
+#
+@runtime_checkable
+class MsgTransport(Protocol[MsgType]):
+#
+# ^-TODO-^ consider using a generic def and indexing with our
+# eventual msg definition/types?
+# - https://docs.python.org/3/library/typing.html#typing.Protocol
+
+    stream: trio.SocketStream
+    drained: list[MsgType]
+
+    def __init__(self, stream: trio.SocketStream) -> None:
+        ...
+
+    # XXX: should this instead be called `.sendall()`?
+    async def send(self, msg: MsgType) -> None:
+        ...
+
+    async def recv(self) -> MsgType:
+        ...
+
+    def __aiter__(self) -> MsgType:
+        ...
+
+    def connected(self) -> bool:
+        ...
+
+    # defining this sync otherwise it causes a mypy error because it
+    # can't figure out it's a generator i guess?..?
+    def drain(self) -> AsyncIterator[dict]:
+        ...
+
+    @property
+    def laddr(self) -> tuple[str, int]:
+        ...
+
+    @property
+    def raddr(self) -> tuple[str, int]:
+        ...
+
+
+# TODO: typing oddity.. not sure why we have to inherit here, but it
+# seems to be an issue with `get_msg_transport()` returning
+# a `Type[Protocol]`; probably should make a `mypy` issue?
+class MsgpackTCPStream(MsgTransport):
+    '''
+    A ``trio.SocketStream`` delivering ``msgpack`` formatted data
+    using the ``msgspec`` codec lib.
+
+    '''
+    layer_key: int = 4
+    name_key: str = 'tcp'
+
+    # TODO: better naming for this?
+    # -[ ] check how libp2p does naming for such things?
+    codec_key: str = 'msgpack'
+
+    def __init__(
+        self,
+        stream: trio.SocketStream,
+        prefix_size: int = 4,
+
+        # XXX optionally provided codec pair for `msgspec`:
+        # https://jcristharif.com/msgspec/extending.html#mapping-to-from-native-types
+        #
+        # TODO: define this as a `Codec` struct which can be
+        # overriden dynamically by the application/runtime?
+        codec: tuple[
+            Callable[[Any], Any]|None,  # coder
+            Callable[[type, Any], Any]|None,  # decoder
+        ]|None = None,
+
+    ) -> None:
+
+        self.stream = stream
+        assert self.stream.socket
+
+        # should both be IP sockets
+        self._laddr, self._raddr = get_stream_addrs(stream)
+
+        # create read loop instance
+        self._aiter_pkts = self._iter_packets()
+        self._send_lock = trio.StrictFIFOLock()
+
+        # public i guess?
+        self.drained: list[dict] = []
+
+        self.recv_stream = BufferedReceiveStream(
+            transport_stream=stream
+        )
+        self.prefix_size = prefix_size
+
+        # allow for custom IPC msg interchange format
+        # dynamic override Bo
+        self._task = trio.lowlevel.current_task()
+
+        # XXX for ctxvar debug only!
+        # self._codec: MsgCodec = (
+        #     codec
+        #     or
+        #     _codec._ctxvar_MsgCodec.get()
+        # )
+
+    async def _iter_packets(self) -> AsyncGenerator[dict, None]:
+        '''
+        Yield `bytes`-blob decoded packets from the underlying TCP
+        stream using the current task's `MsgCodec`.
+
+        This is a streaming routine implemented as an async generator
+        func (which was the original design, but could be changed?)
+        and is allocated by a `.__call__()` inside `.__init__()` where
+        it is assigned to the `._aiter_pkts` attr.
+
+        '''
+        decodes_failed: int = 0
+
+        while True:
+            try:
+                header: bytes = await self.recv_stream.receive_exactly(4)
+            except (
+                ValueError,
+                ConnectionResetError,
+
+                # not sure entirely why we need this but without it we
+                # seem to be getting racy failures here on
+                # arbiter/registry name subs..
+                trio.BrokenResourceError,
+
+            ) as trans_err:
+
+                loglevel = 'transport'
+                match trans_err:
+                    # case (
+                    #     ConnectionResetError()
+                    # ):
+                    #     loglevel = 'transport'
+
+                    # peer actor (graceful??) TCP EOF but `tricycle`
+                    # seems to raise a 0-bytes-read?
+                    case ValueError() if (
+                        'unclean EOF' in trans_err.args[0]
+                    ):
+                        pass
+
+                    # peer actor (task) prolly shutdown quickly due
+                    # to cancellation
+                    case trio.BrokenResourceError() if (
+                        'Connection reset by peer' in trans_err.args[0]
+                    ):
+                        pass
+
+                    # unless the disconnect condition falls under "a
+                    # normal operation breakage" we usualy console warn
+                    # about it.
+                    case _:
+                        loglevel: str = 'warning'
+
+
+                raise TransportClosed(
+                    message=(
+                        f'IPC transport already closed by peer\n'
+                        f'x]> {type(trans_err)}\n'
+                        f'  |_{self}\n'
+                    ),
+                    loglevel=loglevel,
+                ) from trans_err
+
+            # XXX definitely can happen if transport is closed
+            # manually by another `trio.lowlevel.Task` in the
+            # same actor; we use this in some simulated fault
+            # testing for ex, but generally should never happen
+            # under normal operation!
+            #
+            # NOTE: as such we always re-raise this error from the
+            #       RPC msg loop!
+            except trio.ClosedResourceError as closure_err:
+                raise TransportClosed(
+                    message=(
+                        f'IPC transport already manually closed locally?\n'
+                        f'x]> {type(closure_err)} \n'
+                        f'  |_{self}\n'
+                    ),
+                    loglevel='error',
+                    raise_on_report=(
+                        closure_err.args[0] == 'another task closed this fd'
+                        or
+                        closure_err.args[0] in ['another task closed this fd']
+                    ),
+                ) from closure_err
+
+            # graceful TCP EOF disconnect
+            if header == b'':
+                raise TransportClosed(
+                    message=(
+                        f'IPC transport already gracefully closed\n'
+                        f']>\n'
+                        f' |_{self}\n'
+                    ),
+                    loglevel='transport',
+                    # cause=???  # handy or no?
+                )
+
+            size: int
+            size, = struct.unpack("<I", header)
+
+            log.transport(f'received header {size}')  # type: ignore
+            msg_bytes: bytes = await self.recv_stream.receive_exactly(size)
+
+            log.transport(f"received {msg_bytes}")  # type: ignore
+            try:
+                # NOTE: lookup the `trio.Task.context`'s var for
+                # the current `MsgCodec`.
+                codec: MsgCodec = _ctxvar_MsgCodec.get()
+
+                # XXX for ctxvar debug only!
+                # if self._codec.pld_spec != codec.pld_spec:
+                #     assert (
+                #         task := trio.lowlevel.current_task()
+                #     ) is not self._task
+                #     self._task = task
+                #     self._codec = codec
+                #     log.runtime(
+                #         f'Using new codec in {self}.recv()\n'
+                #         f'codec: {self._codec}\n\n'
+                #         f'msg_bytes: {msg_bytes}\n'
+                #     )
+                yield codec.decode(msg_bytes)
+
+            # XXX NOTE: since the below error derives from
+            # `DecodeError` we need to catch is specially
+            # and always raise such that spec violations
+            # are never allowed to be caught silently!
+            except msgspec.ValidationError as verr:
+                msgtyperr: MsgTypeError = _mk_recv_mte(
+                    msg=msg_bytes,
+                    codec=codec,
+                    src_validation_error=verr,
+                )
+                # XXX deliver up to `Channel.recv()` where
+                # a re-raise and `Error`-pack can inject the far
+                # end actor `.uid`.
+                yield msgtyperr
+
+            except (
+                msgspec.DecodeError,
+                UnicodeDecodeError,
+            ):
+                if decodes_failed < 4:
+                    # ignore decoding errors for now and assume they have to
+                    # do with a channel drop - hope that receiving from the
+                    # channel will raise an expected error and bubble up.
+                    try:
+                        msg_str: str|bytes = msg_bytes.decode()
+                    except UnicodeDecodeError:
+                        msg_str = msg_bytes
+
+                    log.exception(
+                        'Failed to decode msg?\n'
+                        f'{codec}\n\n'
+                        'Rxed bytes from wire:\n\n'
+                        f'{msg_str!r}\n'
+                    )
+                    decodes_failed += 1
+                else:
+                    raise
+
+    async def send(
+        self,
+        msg: msgtypes.MsgType,
+
+        strict_types: bool = True,
+        hide_tb: bool = False,
+
+    ) -> None:
+        '''
+        Send a msgpack encoded py-object-blob-as-msg over TCP.
+
+        If `strict_types == True` then a `MsgTypeError` will be raised on any
+        invalid msg type
+
+        '''
+        __tracebackhide__: bool = hide_tb
+
+        # XXX see `trio._sync.AsyncContextManagerMixin` for details
+        # on the `.acquire()`/`.release()` sequencing..
+        async with self._send_lock:
+
+            # NOTE: lookup the `trio.Task.context`'s var for
+            # the current `MsgCodec`.
+            codec: MsgCodec = _ctxvar_MsgCodec.get()
+
+            # XXX for ctxvar debug only!
+            # if self._codec.pld_spec != codec.pld_spec:
+            #     self._codec = codec
+            #     log.runtime(
+            #         f'Using new codec in {self}.send()\n'
+            #         f'codec: {self._codec}\n\n'
+            #         f'msg: {msg}\n'
+            #     )
+
+            if type(msg) not in msgtypes.__msg_types__:
+                if strict_types:
+                    raise _mk_send_mte(
+                        msg,
+                        codec=codec,
+                    )
+                else:
+                    log.warning(
+                        'Sending non-`Msg`-spec msg?\n\n'
+                        f'{msg}\n'
+                    )
+
+            try:
+                bytes_data: bytes = codec.encode(msg)
+            except TypeError as _err:
+                typerr = _err
+                msgtyperr: MsgTypeError = _mk_send_mte(
+                    msg,
+                    codec=codec,
+                    message=(
+                        f'IPC-msg-spec violation in\n\n'
+                        f'{pretty_struct.Struct.pformat(msg)}'
+                    ),
+                    src_type_error=typerr,
+                )
+                raise msgtyperr from typerr
+
+            # supposedly the fastest says,
+            # https://stackoverflow.com/a/54027962
+            size: bytes = struct.pack("<I", len(bytes_data))
+            return await self.stream.send_all(size + bytes_data)
+
+        # ?TODO? does it help ever to dynamically show this
+        # frame?
+        # try:
+        #     <the-above_code>
+        # except BaseException as _err:
+        #     err = _err
+        #     if not isinstance(err, MsgTypeError):
+        #         __tracebackhide__: bool = False
+        #     raise
+
+    @property
+    def laddr(self) -> tuple[str, int]:
+        return self._laddr
+
+    @property
+    def raddr(self) -> tuple[str, int]:
+        return self._raddr
+
+    async def recv(self) -> Any:
+        return await self._aiter_pkts.asend(None)
+
+    async def drain(self) -> AsyncIterator[dict]:
+        '''
+        Drain the stream's remaining messages sent from
+        the far end until the connection is closed by
+        the peer.
+
+        '''
+        try:
+            async for msg in self._iter_packets():
+                self.drained.append(msg)
+        except TransportClosed:
+            for msg in self.drained:
+                yield msg
+
+    def __aiter__(self):
+        return self._aiter_pkts
+
+    def connected(self) -> bool:
+        return self.stream.socket.fileno() != -1
+
+
+def get_msg_transport(
+
+    key: tuple[str, str],
+
+) -> Type[MsgTransport]:
+
+    return {
+        ('msgpack', 'tcp'): MsgpackTCPStream,
+    }[key]
+
+
+class Channel:
+    '''
+    An inter-process channel for communication between (remote) actors.
+
+    Wraps a ``MsgStream``: transport + encoding IPC connection.
+
+    Currently we only support ``trio.SocketStream`` for transport
+    (aka TCP) and the ``msgpack`` interchange format via the ``msgspec``
+    codec libary.
+
+    '''
+    def __init__(
+
+        self,
+        destaddr: tuple[str, int]|None,
+
+        msg_transport_type_key: tuple[str, str] = ('msgpack', 'tcp'),
+
+        # TODO: optional reconnection support?
+        # auto_reconnect: bool = False,
+        # on_reconnect: typing.Callable[..., typing.Awaitable] = None,
+
+    ) -> None:
+
+        # self._recon_seq = on_reconnect
+        # self._autorecon = auto_reconnect
+
+        self._destaddr = destaddr
+        self._transport_key = msg_transport_type_key
+
+        # Either created in ``.connect()`` or passed in by
+        # user in ``.from_stream()``.
+        self._stream: trio.SocketStream|None = None
+        self._transport: MsgTransport|None = None
+
+        # set after handshake - always uid of far end
+        self.uid: tuple[str, str]|None = None
+
+        self._aiter_msgs = self._iter_msgs()
+        self._exc: Exception|None = None  # set if far end actor errors
+        self._closed: bool = False
+
+        # flag set by ``Portal.cancel_actor()`` indicating remote
+        # (possibly peer) cancellation of the far end actor
+        # runtime.
+        self._cancel_called: bool = False
+
+    @property
+    def msgstream(self) -> MsgTransport:
+        log.info(
+            '`Channel.msgstream` is an old name, use `._transport`'
+        )
+        return self._transport
+
+    @property
+    def transport(self) -> MsgTransport:
+        return self._transport
+
+    @classmethod
+    def from_stream(
+        cls,
+        stream: trio.SocketStream,
+        **kwargs,
+
+    ) -> Channel:
+
+        src, dst = get_stream_addrs(stream)
+        chan = Channel(
+            destaddr=dst,
+            **kwargs,
+        )
+
+        # set immediately here from provided instance
+        chan._stream: trio.SocketStream = stream
+        chan.set_msg_transport(stream)
+        return chan
+
+    def set_msg_transport(
+        self,
+        stream: trio.SocketStream,
+        type_key: tuple[str, str]|None = None,
+
+        # XXX optionally provided codec pair for `msgspec`:
+        # https://jcristharif.com/msgspec/extending.html#mapping-to-from-native-types
+        codec: MsgCodec|None = None,
+
+    ) -> MsgTransport:
+        type_key = (
+            type_key
+            or
+            self._transport_key
+        )
+        # get transport type, then
+        self._transport = get_msg_transport(
+            type_key
+        # instantiate an instance of the msg-transport
+        )(
+            stream,
+            codec=codec,
+        )
+        return self._transport
+
+    @cm
+    def apply_codec(
+        self,
+        codec: MsgCodec,
+
+    ) -> None:
+        '''
+        Temporarily override the underlying IPC msg codec for
+        dynamic enforcement of messaging schema.
+
+        '''
+        orig: MsgCodec = self._transport.codec
+        try:
+            self._transport.codec = codec
+            yield
+        finally:
+            self._transport.codec = orig
+
+    # TODO: do a .src/.dst: str for maddrs?
+    def __repr__(self) -> str:
+        if not self._transport:
+            return '<Channel with inactive transport?>'
+
+        return repr(
+            self._transport.stream.socket._sock
+        ).replace(  # type: ignore
+            "socket.socket",
+            "Channel",
+        )
+
+    @property
+    def laddr(self) -> tuple[str, int]|None:
+        return self._transport.laddr if self._transport else None
+
+    @property
+    def raddr(self) -> tuple[str, int]|None:
+        return self._transport.raddr if self._transport else None
+
+    async def connect(
+        self,
+        destaddr: tuple[Any, ...] | None = None,
+        **kwargs
+
+    ) -> MsgTransport:
+
+        if self.connected():
+            raise RuntimeError("channel is already connected?")
+
+        destaddr = destaddr or self._destaddr
+        assert isinstance(destaddr, tuple)
+
+        stream = await trio.open_tcp_stream(
+            *destaddr,
+            **kwargs
+        )
+        transport = self.set_msg_transport(stream)
+
+        log.transport(
+            f'Opened channel[{type(transport)}]: {self.laddr} -> {self.raddr}'
+        )
+        return transport
+
+    # TODO: something like,
+    # `pdbp.hideframe_on(errors=[MsgTypeError])`
+    # instead of the `try/except` hack we have rn..
+    # seems like a pretty useful thing to have in general
+    # along with being able to filter certain stack frame(s / sets)
+    # possibly based on the current log-level?
+    async def send(
+        self,
+        payload: Any,
+
+        hide_tb: bool = False,
+
+    ) -> None:
+        '''
+        Send a coded msg-blob over the transport.
+
+        '''
+        __tracebackhide__: bool = hide_tb
+        try:
+            log.transport(
+                '=> send IPC msg:\n\n'
+                f'{pformat(payload)}\n'
+            )
+            # assert self._transport  # but why typing?
+            await self._transport.send(
+                payload,
+                hide_tb=hide_tb,
+            )
+        except BaseException as _err:
+            err = _err  # bind for introspection
+            if not isinstance(_err, MsgTypeError):
+                # assert err
+                __tracebackhide__: bool = False
+            else:
+                assert err.cid
+
+            raise
+
+    async def recv(self) -> Any:
+        assert self._transport
+        return await self._transport.recv()
+
+        # TODO: auto-reconnect features like 0mq/nanomsg?
+        # -[ ] implement it manually with nods to SC prot
+        #      possibly on multiple transport backends?
+        #  -> seems like that might be re-inventing scalability
+        #     prots tho no?
+        # try:
+        #     return await self._transport.recv()
+        # except trio.BrokenResourceError:
+        #     if self._autorecon:
+        #         await self._reconnect()
+        #         return await self.recv()
+        #     raise
+
+    async def aclose(self) -> None:
+
+        log.transport(
+            f'Closing channel to {self.uid} '
+            f'{self.laddr} -> {self.raddr}'
+        )
+        assert self._transport
+        await self._transport.stream.aclose()
+        self._closed = True
+
+    async def __aenter__(self):
+        await self.connect()
+        return self
+
+    async def __aexit__(self, *args):
+        await self.aclose(*args)
+
+    def __aiter__(self):
+        return self._aiter_msgs
+
+    # ?TODO? run any reconnection sequence?
+    # -[ ] prolly should be impl-ed as deco-API?
+    #
+    # async def _reconnect(self) -> None:
+    #     """Handle connection failures by polling until a reconnect can be
+    #     established.
+    #     """
+    #     down = False
+    #     while True:
+    #         try:
+    #             with trio.move_on_after(3) as cancel_scope:
+    #                 await self.connect()
+    #             cancelled = cancel_scope.cancelled_caught
+    #             if cancelled:
+    #                 log.transport(
+    #                     "Reconnect timed out after 3 seconds, retrying...")
+    #                 continue
+    #             else:
+    #                 log.transport("Stream connection re-established!")
+
+    #                 # on_recon = self._recon_seq
+    #                 # if on_recon:
+    #                 #     await on_recon(self)
+
+    #                 break
+    #         except (OSError, ConnectionRefusedError):
+    #             if not down:
+    #                 down = True
+    #                 log.transport(
+    #                     f"Connection to {self.raddr} went down, waiting"
+    #                     " for re-establishment")
+    #             await trio.sleep(1)
+
+    async def _iter_msgs(
+        self
+    ) -> AsyncGenerator[Any, None]:
+        '''
+        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.
+
+        '''
+        assert self._transport
+        while True:
+            try:
+                async for msg in self._transport:
+                    match msg:
+                        # NOTE: if transport/interchange delivers
+                        # a type error, we pack it with the far
+                        # end peer `Actor.uid` and relay the
+                        # `Error`-msg upward to the `._rpc` stack
+                        # for normal RAE handling.
+                        case MsgTypeError():
+                            yield pack_from_raise(
+                                local_err=msg,
+                                cid=msg.cid,
+
+                                # XXX we pack it here bc lower
+                                # layers have no notion of an
+                                # actor-id ;)
+                                src_uid=self.uid,
+                            )
+                        case _:
+                            yield msg
+
+            except trio.BrokenResourceError:
+
+                # if not self._autorecon:
+                raise
+
+            await self.aclose()
+
+            # if self._autorecon:  # attempt reconnect
+            #     await self._reconnect()
+            #     continue
+
+    def connected(self) -> bool:
+        return self._transport.connected() if self._transport else False
+
+
+@acm
+async def _connect_chan(
+    host: str,
+    port: int
+
+) -> typing.AsyncGenerator[Channel, None]:
+    '''
+    Create and connect a channel with disconnect on context manager
+    teardown.
+
+    '''
+    chan = Channel((host, port))
+    await chan.connect()
+    yield chan
+    with trio.CancelScope(shield=True):
+        await chan.aclose()

tractor/_portal.py

@@ -43,7 +43,7 @@ from .trionics import maybe_open_nursery
 from ._state import (
     current_actor,
 )
-from .ipc import Channel
+from ._ipc import Channel
 from .log import get_logger
 from .msg import (
     # Error,
@@ -52,8 +52,8 @@ from .msg import (
     Return,
 )
 from ._exceptions import (
+    # unpack_error,
     NoResult,
-    TransportClosed,
 )
 from ._context import (
     Context,
@@ -107,10 +107,6 @@ class Portal:
         # point.
         self._expect_result_ctx: Context|None = None
         self._streams: set[MsgStream] = set()
-
-        # TODO, this should be PRIVATE (and never used publicly)! since it's just
-        # a cached ref to the local runtime instead of calling
-        # `current_actor()` everywhere.. XD
         self.actor: Actor = current_actor()
 
     @property
@@ -175,7 +171,7 @@ class Portal:
         # not expecting a "main" result
         if self._expect_result_ctx is None:
             log.warning(
-                f"Portal for {self.channel.aid} not expecting a final"
+                f"Portal for {self.channel.uid} not expecting a final"
                 " result?\nresult() should only be called if subactor"
                 " was spawned with `ActorNursery.run_in_actor()`")
             return NoResult
@@ -222,7 +218,7 @@ class Portal:
         # IPC calls
         if self._streams:
             log.cancel(
-                f"Cancelling all streams with {self.channel.aid}")
+                f"Cancelling all streams with {self.channel.uid}")
             for stream in self._streams.copy():
                 try:
                     await stream.aclose()
@@ -267,7 +263,7 @@ class Portal:
             return False
 
         reminfo: str = (
-            f'c)=> {self.channel.aid}\n'
+            f'c)=> {self.channel.uid}\n'
             f'  |_{chan}\n'
         )
         log.cancel(
@@ -305,34 +301,14 @@ class Portal:
             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:
-            report: str = (
-                f'IPC chan for actor already closed or broken?\n\n'
-                f'{self.channel.aid}\n'
+        ):
+            log.debug(
+                'IPC chan for actor already closed or broken?\n\n'
+                f'{self.channel.uid}\n'
                 f' |_{self.channel}\n'
             )
-            match tpt_err:
-                case TransportClosed():
-                    log.debug(report)
-                case _:
-                    report += (
-                        f'\n'
-                        f'Unhandled low-level transport-closed/error during\n'
-                        f'Portal.cancel_actor()` request?\n'
-                        f'<{type(tpt_err).__name__}( {tpt_err} )>\n'
-                    )
-                    log.warning(report)
-
             return False
 
     # TODO: do we still need this for low level `Actor`-runtime
@@ -528,12 +504,8 @@ class LocalPortal:
         return it's result.
 
         '''
-        obj = (
-            self.actor
-            if ns == 'self'
-            else importlib.import_module(ns)
-        )
-        func: Callable = getattr(obj, func_name)
+        obj = self.actor if ns == 'self' else importlib.import_module(ns)
+        func = getattr(obj, func_name)
         return await func(**kwargs)
 
 
@@ -571,17 +543,15 @@ async def open_portal(
             await channel.connect()
             was_connected = True
 
-        if channel.aid is None:
-            await channel._do_handshake(
-                aid=actor.aid,
-            )
+        if channel.uid is None:
+            await actor._do_handshake(channel)
 
         msg_loop_cs: trio.CancelScope|None = None
         if start_msg_loop:
-            from . import _rpc
+            from ._runtime import process_messages
             msg_loop_cs = await tn.start(
                 partial(
-                    _rpc.process_messages,
+                    process_messages,
                     actor,
                     channel,
                     # if the local task is cancelled we want to keep

tractor/_root.py

@@ -18,9 +18,7 @@
 Root actor runtime ignition(s).
 
 '''
-from contextlib import (
-    asynccontextmanager as acm,
-)
+from contextlib import asynccontextmanager as acm
 from functools import partial
 import importlib
 import inspect
@@ -28,10 +26,7 @@ import logging
 import os
 import signal
 import sys
-from typing import (
-    Any,
-    Callable,
-)
+from typing import Callable
 import warnings
 
 
@@ -48,111 +43,33 @@ from .devx import _debug
 from . import _spawn
 from . import _state
 from . import log
-from .ipc import (
-    _connect_chan,
-)
-from ._addr import (
-    Address,
-    UnwrappedAddress,
-    default_lo_addrs,
-    mk_uuid,
-    wrap_address,
-)
-from ._exceptions import (
-    RuntimeFailure,
-    is_multi_cancelled,
-)
+from ._ipc import _connect_chan
+from ._exceptions import is_multi_cancelled
+
+
+# set at startup and after forks
+_default_host: str = '127.0.0.1'
+_default_port: int = 1616
+
+# default registry always on localhost
+_default_lo_addrs: list[tuple[str, int]] = [(
+    _default_host,
+    _default_port,
+)]
 
 
 logger = log.get_logger('tractor')
 
 
-# TODO: stick this in a `@acm` defined in `devx._debug`?
-# -[ ] also maybe consider making this a `wrapt`-deco to
-#     save an indent level?
-#
-@acm
-async def maybe_block_bp(
-    debug_mode: bool,
-    maybe_enable_greenback: bool,
-) -> bool:
-    # Override the global debugger hook to make it play nice with
-    # ``trio``, see much discussion in:
-    # https://github.com/python-trio/trio/issues/1155#issuecomment-742964018
-    builtin_bp_handler: Callable = sys.breakpointhook
-    orig_bp_path: str|None = os.environ.get(
-        'PYTHONBREAKPOINT',
-        None,
-    )
-    bp_blocked: bool
-    if (
-        debug_mode
-        and maybe_enable_greenback
-        and (
-            maybe_mod := await _debug.maybe_init_greenback(
-                raise_not_found=False,
-            )
-        )
-    ):
-        logger.info(
-            f'Found `greenback` installed @ {maybe_mod}\n'
-            'Enabling `tractor.pause_from_sync()` support!\n'
-        )
-        os.environ['PYTHONBREAKPOINT'] = (
-            'tractor.devx._debug._sync_pause_from_builtin'
-        )
-        _state._runtime_vars['use_greenback'] = True
-        bp_blocked = False
-
-    else:
-        # TODO: disable `breakpoint()` by default (without
-        # `greenback`) since it will break any multi-actor
-        # usage by a clobbered TTY's stdstreams!
-        def block_bps(*args, **kwargs):
-            raise RuntimeError(
-                'Trying to use `breakpoint()` eh?\n\n'
-                'Welp, `tractor` blocks `breakpoint()` built-in calls by default!\n'
-                'If you need to use it please install `greenback` and set '
-                '`debug_mode=True` when opening the runtime '
-                '(either via `.open_nursery()` or `open_root_actor()`)\n'
-            )
-
-        sys.breakpointhook = block_bps
-        # lol ok,
-        # https://docs.python.org/3/library/sys.html#sys.breakpointhook
-        os.environ['PYTHONBREAKPOINT'] = "0"
-        bp_blocked = True
-
-    try:
-        yield bp_blocked
-    finally:
-        # restore any prior built-in `breakpoint()` hook state
-        if builtin_bp_handler is not None:
-            sys.breakpointhook = builtin_bp_handler
-
-        if orig_bp_path is not None:
-            os.environ['PYTHONBREAKPOINT'] = orig_bp_path
-
-        else:
-            # clear env back to having no entry
-            os.environ.pop('PYTHONBREAKPOINT', None)
-
-
-
 @acm
 async def open_root_actor(
+
     *,
     # defaults are above
-    registry_addrs: list[UnwrappedAddress]|None = None,
+    registry_addrs: list[tuple[str, int]]|None = None,
 
     # defaults are above
-    arbiter_addr: tuple[UnwrappedAddress]|None = None,
-
-    enable_transports: list[
-        # TODO, this should eventually be the pairs as
-        # defined by (codec, proto) as on `MsgTransport.
-        _state.TransportProtocolKey,
-    ]|None = None,
+    arbiter_addr: tuple[str, int]|None = None,
 
     name: str|None = 'root',
 
@@ -194,331 +111,350 @@ async def open_root_actor(
     Runtime init entry point for ``tractor``.
 
     '''
-    # XXX NEVER allow nested actor-trees!
-    if already_actor := _state.current_actor(err_on_no_runtime=False):
-        rtvs: dict[str, Any] = _state._runtime_vars
-        root_mailbox: list[str, int] = rtvs['_root_mailbox']
-        registry_addrs: list[list[str, int]] = rtvs['_registry_addrs']
-        raise RuntimeFailure(
-            f'A current actor already exists !?\n'
-            f'({already_actor}\n'
-            f'\n'
-            f'You can NOT open a second root actor from within '
-            f'an existing tree and the current root of this '
-            f'already exists !!\n'
-            f'\n'
-            f'_root_mailbox: {root_mailbox!r}\n'
-            f'_registry_addrs: {registry_addrs!r}\n'
-        )
+    _debug.hide_runtime_frames()
+    __tracebackhide__: bool = hide_tb
 
-    async with maybe_block_bp(
-        debug_mode=debug_mode,
-        maybe_enable_greenback=maybe_enable_greenback,
+    # TODO: stick this in a `@cm` defined in `devx._debug`?
+    #
+    # Override the global debugger hook to make it play nice with
+    # ``trio``, see much discussion in:
+    # https://github.com/python-trio/trio/issues/1155#issuecomment-742964018
+    builtin_bp_handler: Callable = sys.breakpointhook
+    orig_bp_path: str|None = os.environ.get(
+        'PYTHONBREAKPOINT',
+        None,
+    )
+    if (
+        debug_mode
+        and maybe_enable_greenback
+        and (
+            maybe_mod := await _debug.maybe_init_greenback(
+                raise_not_found=False,
+            )
+        )
     ):
-        if enable_transports is None:
-            enable_transports: list[str] = _state.current_ipc_protos()
+        logger.info(
+            f'Found `greenback` installed @ {maybe_mod}\n'
+            'Enabling `tractor.pause_from_sync()` support!\n'
+        )
+        os.environ['PYTHONBREAKPOINT'] = (
+            'tractor.devx._debug._sync_pause_from_builtin'
+        )
+        _state._runtime_vars['use_greenback'] = True
 
-            # TODO! support multi-tpts per actor! Bo
-            assert (
-                len(enable_transports) == 1
-            ), 'No multi-tpt support yet!'
+    else:
+        # TODO: disable `breakpoint()` by default (without
+        # `greenback`) since it will break any multi-actor
+        # usage by a clobbered TTY's stdstreams!
+        def block_bps(*args, **kwargs):
+            raise RuntimeError(
+                'Trying to use `breakpoint()` eh?\n\n'
+                'Welp, `tractor` blocks `breakpoint()` built-in calls by default!\n'
+                'If you need to use it please install `greenback` and set '
+                '`debug_mode=True` when opening the runtime '
+                '(either via `.open_nursery()` or `open_root_actor()`)\n'
+            )
 
-        _debug.hide_runtime_frames()
-        __tracebackhide__: bool = hide_tb
+        sys.breakpointhook = block_bps
+        # lol ok,
+        # https://docs.python.org/3/library/sys.html#sys.breakpointhook
+        os.environ['PYTHONBREAKPOINT'] = "0"
 
-        # attempt to retreive ``trio``'s sigint handler and stash it
-        # on our debugger lock state.
-        _debug.DebugStatus._trio_handler = signal.getsignal(signal.SIGINT)
+    # attempt to retreive ``trio``'s sigint handler and stash it
+    # on our debugger lock state.
+    _debug.DebugStatus._trio_handler = signal.getsignal(signal.SIGINT)
 
-        # mark top most level process as root actor
-        _state._runtime_vars['_is_root'] = True
+    # mark top most level process as root actor
+    _state._runtime_vars['_is_root'] = True
 
-        # caps based rpc list
-        enable_modules = (
-            enable_modules
-            or
-            []
+    # caps based rpc list
+    enable_modules = (
+        enable_modules
+        or
+        []
+    )
+
+    if rpc_module_paths:
+        warnings.warn(
+            "`rpc_module_paths` is now deprecated, use "
+            " `enable_modules` instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        enable_modules.extend(rpc_module_paths)
+
+    if start_method is not None:
+        _spawn.try_set_start_method(start_method)
+
+    if arbiter_addr is not None:
+        warnings.warn(
+            '`arbiter_addr` is now deprecated\n'
+            'Use `registry_addrs: list[tuple]` instead..',
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        registry_addrs = [arbiter_addr]
+
+    registry_addrs: list[tuple[str, int]] = (
+        registry_addrs
+        or
+        _default_lo_addrs
+    )
+    assert registry_addrs
+
+    loglevel = (
+        loglevel
+        or log._default_loglevel
+    ).upper()
+
+    if (
+        debug_mode
+        and _spawn._spawn_method == 'trio'
+    ):
+        _state._runtime_vars['_debug_mode'] = True
+
+        # expose internal debug module to every actor allowing for
+        # use of ``await tractor.pause()``
+        enable_modules.append('tractor.devx._debug')
+
+        # if debug mode get's enabled *at least* use that level of
+        # logging for some informative console prompts.
+        if (
+            logging.getLevelName(
+                # lul, need the upper case for the -> int map?
+                # sweet "dynamic function behaviour" stdlib...
+                loglevel,
+            ) > logging.getLevelName('PDB')
+        ):
+            loglevel = 'PDB'
+
+
+    elif debug_mode:
+        raise RuntimeError(
+            "Debug mode is only supported for the `trio` backend!"
         )
 
-        if rpc_module_paths:
-            warnings.warn(
-                "`rpc_module_paths` is now deprecated, use "
-                " `enable_modules` instead.",
-                DeprecationWarning,
-                stacklevel=2,
-            )
-            enable_modules.extend(rpc_module_paths)
+    assert loglevel
+    _log = log.get_console_log(loglevel)
+    assert _log
 
-        if start_method is not None:
-            _spawn.try_set_start_method(start_method)
+    # TODO: factor this into `.devx._stackscope`!!
+    if (
+        debug_mode
+        and
+        enable_stack_on_sig
+    ):
+        from .devx._stackscope import enable_stack_on_sig
+        enable_stack_on_sig()
 
-        # TODO! remove this ASAP!
-        if arbiter_addr is not None:
-            warnings.warn(
-                '`arbiter_addr` is now deprecated\n'
-                'Use `registry_addrs: list[tuple]` instead..',
-                DeprecationWarning,
-                stacklevel=2,
-            )
-            registry_addrs = [arbiter_addr]
+    # closed into below ping task-func
+    ponged_addrs: list[tuple[str, int]] = []
 
-        if not registry_addrs:
-            registry_addrs: list[UnwrappedAddress] = default_lo_addrs(
-                enable_transports
+    async def ping_tpt_socket(
+        addr: tuple[str, int],
+        timeout: float = 1,
+    ) -> None:
+        '''
+        Attempt temporary connection to see if a registry is
+        listening at the requested address by a tranport layer
+        ping.
+
+        If a connection can't be made quickly we assume none no
+        server is listening at that addr.
+
+        '''
+        try:
+            # TODO: this connect-and-bail forces us to have to
+            # carefully rewrap TCP 104-connection-reset errors as
+            # EOF so as to avoid propagating cancel-causing errors
+            # to the channel-msg loop machinery. Likely it would
+            # be better to eventually have a "discovery" protocol
+            # with basic handshake instead?
+            with trio.move_on_after(timeout):
+                async with _connect_chan(*addr):
+                    ponged_addrs.append(addr)
+
+        except OSError:
+            # TODO: make this a "discovery" log level?
+            logger.info(
+                f'No actor registry found @ {addr}\n'
             )
 
-        assert registry_addrs
+    async with trio.open_nursery() as tn:
+        for addr in registry_addrs:
+            tn.start_soon(
+                ping_tpt_socket,
+                tuple(addr),  # TODO: just drop this requirement?
+            )
 
-        loglevel = (
-            loglevel
-            or log._default_loglevel
-        ).upper()
+    trans_bind_addrs: list[tuple[str, int]] = []
 
-        if (
-            debug_mode
-            and _spawn._spawn_method == 'trio'
-        ):
-            _state._runtime_vars['_debug_mode'] = True
-
-            # expose internal debug module to every actor allowing for
-            # use of ``await tractor.pause()``
-            enable_modules.append('tractor.devx._debug')
-
-            # if debug mode get's enabled *at least* use that level of
-            # logging for some informative console prompts.
-            if (
-                logging.getLevelName(
-                    # lul, need the upper case for the -> int map?
-                    # sweet "dynamic function behaviour" stdlib...
-                    loglevel,
-                ) > logging.getLevelName('PDB')
-            ):
-                loglevel = 'PDB'
-
-
-        elif debug_mode:
+    # Create a new local root-actor instance which IS NOT THE
+    # REGISTRAR
+    if ponged_addrs:
+        if ensure_registry:
             raise RuntimeError(
-                "Debug mode is only supported for the `trio` backend!"
+                 f'Failed to open `{name}`@{ponged_addrs}: '
+                'registry socket(s) already bound'
             )
 
-        assert loglevel
-        _log = log.get_console_log(loglevel)
-        assert _log
+        # we were able to connect to an arbiter
+        logger.info(
+            f'Registry(s) seem(s) to exist @ {ponged_addrs}'
+        )
 
-        # TODO: factor this into `.devx._stackscope`!!
+        actor = Actor(
+            name=name or 'anonymous',
+            registry_addrs=ponged_addrs,
+            loglevel=loglevel,
+            enable_modules=enable_modules,
+        )
+        # DO NOT use the registry_addrs as the transport server
+        # addrs for this new non-registar, root-actor.
+        for host, port in ponged_addrs:
+            # NOTE: zero triggers dynamic OS port allocation
+            trans_bind_addrs.append((host, 0))
+
+    # 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.
+    else:
+
+        # NOTE that if the current actor IS THE REGISTAR, the
+        # following init steps are taken:
+        # - the tranport layer server is bound to each (host, port)
+        #   pair defined in provided registry_addrs, or the default.
+        trans_bind_addrs = registry_addrs
+
+        # - it is normally desirable for any registrar to stay up
+        #   indefinitely until either all registered (child/sub)
+        #   actors are terminated (via SC supervision) or,
+        #   a re-election process has taken place. 
+        # NOTE: all of ^ which is not implemented yet - see:
+        # https://github.com/goodboy/tractor/issues/216
+        # https://github.com/goodboy/tractor/pull/348
+        # https://github.com/goodboy/tractor/issues/296
+
+        actor = Arbiter(
+            name or 'registrar',
+            registry_addrs=registry_addrs,
+            loglevel=loglevel,
+            enable_modules=enable_modules,
+        )
+        # XXX, in case the root actor runtime was actually run from
+        # `tractor.to_asyncio.run_as_asyncio_guest()` and NOt
+        # `.trio.run()`.
+        actor._infected_aio = _state._runtime_vars['_is_infected_aio']
+
+    # Start up main task set via core actor-runtime nurseries.
+    try:
+        # assign process-local actor
+        _state._current_actor = actor
+
+        # start local channel-server and fake the portal API
+        # NOTE: this won't block since we provide the nursery
+        ml_addrs_str: str = '\n'.join(
+            f'@{addr}' for addr in trans_bind_addrs
+        )
+        logger.info(
+            f'Starting local {actor.uid} on the following transport addrs:\n'
+            f'{ml_addrs_str}'
+        )
+
+        # start the actor runtime in a new task
+        async with trio.open_nursery(
+            strict_exception_groups=False,
+            # ^XXX^ TODO? instead unpack any RAE as per "loose" style?
+        ) as nursery:
+
+            # ``_runtime.async_main()`` creates an internal nursery
+            # and blocks here until any underlying actor(-process)
+            # tree has terminated thereby conducting so called
+            # "end-to-end" structured concurrency throughout an
+            # entire hierarchical python sub-process set; all
+            # "actor runtime" primitives are SC-compat and thus all
+            # transitively spawned actors/processes must be as
+            # well.
+            await nursery.start(
+                partial(
+                    async_main,
+                    actor,
+                    accept_addrs=trans_bind_addrs,
+                    parent_addr=None
+                )
+            )
+            try:
+                yield actor
+            except (
+                Exception,
+                BaseExceptionGroup,
+            ) as err:
+
+                # TODO, in beginning to handle the subsubactor with
+                # crashed grandparent cases..
+                #
+                # was_locked: bool = await _debug.maybe_wait_for_debugger(
+                #     child_in_debug=True,
+                # )
+                # XXX NOTE XXX see equiv note inside
+                # `._runtime.Actor._stream_handler()` where in the
+                # non-root or root-that-opened-this-mahually case we
+                # wait for the local actor-nursery to exit before
+                # exiting the transport channel handler.
+                entered: bool = await _debug._maybe_enter_pm(
+                    err,
+                    api_frame=inspect.currentframe(),
+                    debug_filter=debug_filter,
+                )
+
+                if (
+                    not entered
+                    and
+                    not is_multi_cancelled(
+                        err,
+                    )
+                ):
+                    logger.exception('Root actor crashed\n')
+
+                # ALWAYS re-raise any error bubbled up from the
+                # runtime!
+                raise
+
+            finally:
+                # NOTE: not sure if we'll ever need this but it's
+                # possibly better for even more determinism?
+                # logger.cancel(
+                #     f'Waiting on {len(nurseries)} nurseries in root..')
+                # nurseries = actor._actoruid2nursery.values()
+                # async with trio.open_nursery() as tempn:
+                #     for an in nurseries:
+                #         tempn.start_soon(an.exited.wait)
+
+                logger.info(
+                    'Closing down root actor'
+                )
+                await actor.cancel(None)  # self cancel
+    finally:
+        _state._current_actor = None
+        _state._last_actor_terminated = actor
+
+        # restore built-in `breakpoint()` hook state
         if (
             debug_mode
             and
-            enable_stack_on_sig
+            maybe_enable_greenback
         ):
-            from .devx._stackscope import enable_stack_on_sig
-            enable_stack_on_sig()
+            if builtin_bp_handler is not None:
+                sys.breakpointhook = builtin_bp_handler
 
-        # closed into below ping task-func
-        ponged_addrs: list[UnwrappedAddress] = []
+            if orig_bp_path is not None:
+                os.environ['PYTHONBREAKPOINT'] = orig_bp_path
 
-        async def ping_tpt_socket(
-            addr: UnwrappedAddress,
-            timeout: float = 1,
-        ) -> None:
-            '''
-            Attempt temporary connection to see if a registry is
-            listening at the requested address by a tranport layer
-            ping.
+            else:
+                # clear env back to having no entry
+                os.environ.pop('PYTHONBREAKPOINT', None)
 
-            If a connection can't be made quickly we assume none no
-            server is listening at that addr.
-
-            '''
-            try:
-                # TODO: this connect-and-bail forces us to have to
-                # carefully rewrap TCP 104-connection-reset errors as
-                # EOF so as to avoid propagating cancel-causing errors
-                # to the channel-msg loop machinery. Likely it would
-                # be better to eventually have a "discovery" protocol
-                # with basic handshake instead?
-                with trio.move_on_after(timeout):
-                    async with _connect_chan(addr):
-                        ponged_addrs.append(addr)
-
-            except OSError:
-                # TODO: make this a "discovery" log level?
-                logger.info(
-                    f'No actor registry found @ {addr}\n'
-                )
-
-        async with trio.open_nursery() as tn:
-            for addr in registry_addrs:
-                tn.start_soon(
-                    ping_tpt_socket,
-                    addr,
-                )
-
-        trans_bind_addrs: list[UnwrappedAddress] = []
-
-        # Create a new local root-actor instance which IS NOT THE
-        # REGISTRAR
-        if ponged_addrs:
-            if ensure_registry:
-                raise RuntimeError(
-                     f'Failed to open `{name}`@{ponged_addrs}: '
-                    'registry socket(s) already bound'
-                )
-
-            # we were able to connect to an arbiter
-            logger.info(
-                f'Registry(s) seem(s) to exist @ {ponged_addrs}'
-            )
-
-            actor = Actor(
-                name=name or 'anonymous',
-                uuid=mk_uuid(),
-                registry_addrs=ponged_addrs,
-                loglevel=loglevel,
-                enable_modules=enable_modules,
-            )
-            # DO NOT use the registry_addrs as the transport server
-            # addrs for this new non-registar, root-actor.
-            for addr in ponged_addrs:
-                waddr: Address = wrap_address(addr)
-                trans_bind_addrs.append(
-                    waddr.get_random(bindspace=waddr.bindspace)
-                )
-
-        # 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.
-        else:
-
-            # NOTE that if the current actor IS THE REGISTAR, the
-            # 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 = registry_addrs
-
-            # - it is normally desirable for any registrar to stay up
-            #   indefinitely until either all registered (child/sub)
-            #   actors are terminated (via SC supervision) or,
-            #   a re-election process has taken place.
-            # NOTE: all of ^ which is not implemented yet - see:
-            # https://github.com/goodboy/tractor/issues/216
-            # https://github.com/goodboy/tractor/pull/348
-            # https://github.com/goodboy/tractor/issues/296
-
-            actor = Arbiter(
-                name=name or 'registrar',
-                uuid=mk_uuid(),
-                registry_addrs=registry_addrs,
-                loglevel=loglevel,
-                enable_modules=enable_modules,
-            )
-            # XXX, in case the root actor runtime was actually run from
-            # `tractor.to_asyncio.run_as_asyncio_guest()` and NOt
-            # `.trio.run()`.
-            actor._infected_aio = _state._runtime_vars['_is_infected_aio']
-
-        # Start up main task set via core actor-runtime nurseries.
-        try:
-            # assign process-local actor
-            _state._current_actor = actor
-
-            # start local channel-server and fake the portal API
-            # NOTE: this won't block since we provide the nursery
-            ml_addrs_str: str = '\n'.join(
-                f'@{addr}' for addr in trans_bind_addrs
-            )
-            logger.info(
-                f'Starting local {actor.uid} on the following transport addrs:\n'
-                f'{ml_addrs_str}'
-            )
-
-            # start the actor runtime in a new task
-            async with trio.open_nursery(
-                strict_exception_groups=False,
-                # ^XXX^ TODO? instead unpack any RAE as per "loose" style?
-            ) as nursery:
-
-                # ``_runtime.async_main()`` creates an internal nursery
-                # and blocks here until any underlying actor(-process)
-                # tree has terminated thereby conducting so called
-                # "end-to-end" structured concurrency throughout an
-                # entire hierarchical python sub-process set; all
-                # "actor runtime" primitives are SC-compat and thus all
-                # transitively spawned actors/processes must be as
-                # well.
-                await nursery.start(
-                    partial(
-                        async_main,
-                        actor,
-                        accept_addrs=trans_bind_addrs,
-                        parent_addr=None
-                    )
-                )
-                try:
-                    yield actor
-                except (
-                    Exception,
-                    BaseExceptionGroup,
-                ) as err:
-
-                    # TODO, in beginning to handle the subsubactor with
-                    # crashed grandparent cases..
-                    #
-                    # was_locked: bool = await _debug.maybe_wait_for_debugger(
-                    #     child_in_debug=True,
-                    # )
-                    # XXX NOTE XXX see equiv note inside
-                    # `._runtime.Actor._stream_handler()` where in the
-                    # non-root or root-that-opened-this-mahually case we
-                    # wait for the local actor-nursery to exit before
-                    # exiting the transport channel handler.
-                    entered: bool = await _debug._maybe_enter_pm(
-                        err,
-                        api_frame=inspect.currentframe(),
-                        debug_filter=debug_filter,
-                    )
-
-                    if (
-                        not entered
-                        and
-                        not is_multi_cancelled(
-                            err,
-                        )
-                    ):
-                        logger.exception(
-                            'Root actor crashed\n'
-                            f'>x)\n'
-                            f' |_{actor}\n'
-                        )
-
-                    # ALWAYS re-raise any error bubbled up from the
-                    # runtime!
-                    raise
-
-                finally:
-                    # NOTE: not sure if we'll ever need this but it's
-                    # possibly better for even more determinism?
-                    # logger.cancel(
-                    #     f'Waiting on {len(nurseries)} nurseries in root..')
-                    # nurseries = actor._actoruid2nursery.values()
-                    # async with trio.open_nursery() as tempn:
-                    #     for an in nurseries:
-                    #         tempn.start_soon(an.exited.wait)
-
-                    logger.info(
-                        f'Closing down root actor\n'
-                        f'>)\n'
-                        f'|_{actor}\n'
-                    )
-                    await actor.cancel(None)  # self cancel
-        finally:
-            _state._current_actor = None
-            _state._last_actor_terminated = actor
-            logger.runtime(
-                f'Root actor terminated\n'
-                f')>\n'
-                f' |_{actor}\n'
-            )
+        logger.runtime("Root actor terminated")
 
 
 def run_daemon(
@@ -526,7 +462,7 @@ def run_daemon(
 
     # runtime kwargs
     name: str | None = 'root',
-    registry_addrs: list[UnwrappedAddress]|None = None,
+    registry_addrs: list[tuple[str, int]] = _default_lo_addrs,
 
     start_method: str | None = None,
     debug_mode: bool = False,

tractor/_rpc.py

@@ -42,7 +42,7 @@ from trio import (
     TaskStatus,
 )
 
-from .ipc import Channel
+from ._ipc import Channel
 from ._context import (
     Context,
 )
@@ -1156,7 +1156,7 @@ async def process_messages(
                                 trio.Event(),
                             )
 
-                    # XXX RUNTIME-SCOPED! remote (likely internal) error
+                    # runtime-scoped remote (internal) error
                     # (^- bc no `Error.cid` -^)
                     #
                     # NOTE: this is the non-rpc error case, that
@@ -1219,10 +1219,8 @@ async def process_messages(
         # -[ ] figure out how this will break with other transports?
         tc.report_n_maybe_raise(
             message=(
-                f'peer IPC channel closed abruptly?\n'
-                f'\n'
-                f'<=x[\n'
-                f'  {chan}\n'
+                f'peer IPC channel closed abruptly?\n\n'
+                f'<=x {chan}\n'
                 f'  |_{chan.raddr}\n\n'
             )
             +

tractor/_spawn.py

@@ -46,23 +46,19 @@ from tractor._state import (
     _runtime_vars,
 )
 from tractor.log import get_logger
-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.msg.types import (
-    Aid,
     SpawnSpec,
 )
 
 
 if TYPE_CHECKING:
-    from ipc import IPCServer
     from ._supervise import ActorNursery
     ProcessType = TypeVar('ProcessType', mp.Process, trio.Process)
 
-
 log = get_logger('tractor')
 
 # placeholder for an mp start context if so using that backend
@@ -167,7 +163,7 @@ async def exhaust_portal(
         # TODO: merge with above?
         log.warning(
             'Cancelled portal result waiter task:\n'
-            f'uid: {portal.channel.aid}\n'
+            f'uid: {portal.channel.uid}\n'
             f'error: {err}\n'
         )
         return err
@@ -175,7 +171,7 @@ async def exhaust_portal(
     else:
         log.debug(
             f'Returning final result from portal:\n'
-            f'uid: {portal.channel.aid}\n'
+            f'uid: {portal.channel.uid}\n'
             f'result: {final}\n'
         )
         return final
@@ -328,12 +324,12 @@ async def soft_kill(
     see `.hard_kill()`).
 
     '''
-    peer_aid: Aid = portal.channel.aid
+    uid: tuple[str, str] = portal.channel.uid
     try:
         log.cancel(
             f'Soft killing sub-actor via portal request\n'
             f'\n'
-            f'(c=> {peer_aid}\n'
+            f'(c=> {portal.chan.uid}\n'
             f'  |_{proc}\n'
         )
         # wait on sub-proc to signal termination
@@ -382,7 +378,7 @@ async def soft_kill(
             if proc.poll() is None:  # type: ignore
                 log.warning(
                     'Subactor still alive after cancel request?\n\n'
-                    f'uid: {peer_aid}\n'
+                    f'uid: {uid}\n'
                     f'|_{proc}\n'
                 )
                 n.cancel_scope.cancel()
@@ -396,15 +392,14 @@ async def new_proc(
     errors: dict[tuple[str, str], Exception],
 
     # passed through to actor main
-    bind_addrs: list[UnwrappedAddress],
-    parent_addr: UnwrappedAddress,
+    bind_addrs: list[tuple[str, int]],
+    parent_addr: tuple[str, int],
     _runtime_vars: dict[str, Any],  # serialized and sent to _child
 
     *,
 
     infect_asyncio: bool = False,
-    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED,
-    proc_kwargs: dict[str, any] = {}
+    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED
 
 ) -> None:
 
@@ -424,7 +419,6 @@ async def new_proc(
         _runtime_vars,  # run time vars
         infect_asyncio=infect_asyncio,
         task_status=task_status,
-        proc_kwargs=proc_kwargs
     )
 
 
@@ -435,13 +429,12 @@ async def trio_proc(
     errors: dict[tuple[str, str], Exception],
 
     # passed through to actor main
-    bind_addrs: list[UnwrappedAddress],
-    parent_addr: UnwrappedAddress,
+    bind_addrs: list[tuple[str, int]],
+    parent_addr: tuple[str, int],
     _runtime_vars: dict[str, Any],  # serialized and sent to _child
     *,
     infect_asyncio: bool = False,
-    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED,
-    proc_kwargs: dict[str, any] = {}
+    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED
 
 ) -> None:
     '''
@@ -463,9 +456,6 @@ async def trio_proc(
         # the OS; it otherwise can be passed via the parent channel if
         # we prefer in the future (for privacy).
         "--uid",
-        # TODO, how to pass this over "wire" encodings like
-        # cmdline args?
-        # -[ ] maybe we can add an `Aid.min_tuple()` ?
         str(subactor.uid),
         # Address the child must connect to on startup
         "--parent_addr",
@@ -483,10 +473,9 @@ async def trio_proc(
 
     cancelled_during_spawn: bool = False
     proc: trio.Process|None = None
-    ipc_server: IPCServer = actor_nursery._actor.ipc_server
     try:
         try:
-            proc: trio.Process = await trio.lowlevel.open_process(spawn_cmd, **proc_kwargs)
+            proc: trio.Process = await trio.lowlevel.open_process(spawn_cmd)
             log.runtime(
                 'Started new child\n'
                 f'|_{proc}\n'
@@ -495,7 +484,7 @@ async def trio_proc(
             # wait for actor to spawn and connect back to us
             # channel should have handshake completed by the
             # local actor by the time we get a ref to it
-            event, chan = await ipc_server.wait_for_peer(
+            event, chan = await actor_nursery._actor.wait_for_peer(
                 subactor.uid
             )
 
@@ -528,15 +517,15 @@ async def trio_proc(
 
         # send a "spawning specification" which configures the
         # initial runtime state of the child.
-        sspec = SpawnSpec(
-            _parent_main_data=subactor._parent_main_data,
-            enable_modules=subactor.enable_modules,
-            reg_addrs=subactor.reg_addrs,
-            bind_addrs=bind_addrs,
-            _runtime_vars=_runtime_vars,
+        await chan.send(
+            SpawnSpec(
+                _parent_main_data=subactor._parent_main_data,
+                enable_modules=subactor.enable_modules,
+                reg_addrs=subactor.reg_addrs,
+                bind_addrs=bind_addrs,
+                _runtime_vars=_runtime_vars,
+            )
         )
-        log.runtime(f'Sending spawn spec: {str(sspec)}')
-        await chan.send(sspec)
 
         # track subactor in current nursery
         curr_actor: Actor = current_actor()
@@ -646,13 +635,12 @@ async def mp_proc(
     subactor: Actor,
     errors: dict[tuple[str, str], Exception],
     # passed through to actor main
-    bind_addrs: list[UnwrappedAddress],
-    parent_addr: UnwrappedAddress,
+    bind_addrs: list[tuple[str, int]],
+    parent_addr: tuple[str, int],
     _runtime_vars: dict[str, Any],  # serialized and sent to _child
     *,
     infect_asyncio: bool = False,
-    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED,
-    proc_kwargs: dict[str, any] = {}
+    task_status: TaskStatus[Portal] = trio.TASK_STATUS_IGNORED
 
 ) -> None:
 
@@ -727,14 +715,12 @@ async def mp_proc(
 
     log.runtime(f"Started {proc}")
 
-    ipc_server: IPCServer = actor_nursery._actor.ipc_server
     try:
         # wait for actor to spawn and connect back to us
         # channel should have handshake completed by the
         # local actor by the time we get a ref to it
-        event, chan = await ipc_server.wait_for_peer(
-            subactor.uid,
-        )
+        event, chan = await actor_nursery._actor.wait_for_peer(
+            subactor.uid)
 
         # XXX: monkey patch poll API to match the ``subprocess`` API..
         # not sure why they don't expose this but kk.

tractor/_state.py

@@ -14,19 +14,16 @@
 # 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/>.
 
-'''
-Per actor-process runtime state mgmt APIs.
+"""
+Per process state
 
-'''
+"""
 from __future__ import annotations
 from contextvars import (
     ContextVar,
 )
-import os
-from pathlib import Path
 from typing import (
     Any,
-    Literal,
     TYPE_CHECKING,
 )
 
@@ -102,7 +99,7 @@ def current_actor(
     return _current_actor
 
 
-def is_root_process() -> bool:
+def is_main_process() -> bool:
     '''
     Bool determining if this actor is running in the top-most process.
 
@@ -111,10 +108,8 @@ def is_root_process() -> bool:
     return mp.current_process().name == 'MainProcess'
 
 
-is_main_process = is_root_process
-
-
-def is_debug_mode() -> bool:
+# TODO, more verby name?
+def debug_mode() -> bool:
     '''
     Bool determining if "debug mode" is on which enables
     remote subactor pdb entry on crashes.
@@ -123,9 +118,6 @@ def is_debug_mode() -> bool:
     return bool(_runtime_vars['_debug_mode'])
 
 
-debug_mode = is_debug_mode
-
-
 def is_root_process() -> bool:
     return _runtime_vars['_is_root']
 
@@ -151,42 +143,3 @@ def current_ipc_ctx(
             f'|_{current_task()}\n'
         )
     return ctx
-
-
-# std ODE (mutable) app state location
-_rtdir: Path = Path(os.environ['XDG_RUNTIME_DIR'])
-
-
-def get_rt_dir(
-    subdir: str = 'tractor'
-) -> Path:
-    '''
-    Return the user "runtime dir" where most userspace apps stick
-    their IPC and cache related system util-files; we take hold
-    of a `'XDG_RUNTIME_DIR'/tractor/` subdir by default.
-
-    '''
-    rtdir: Path = _rtdir / subdir
-    if not rtdir.is_dir():
-        rtdir.mkdir()
-    return rtdir
-
-
-# default IPC transport protocol settings
-TransportProtocolKey = Literal[
-    'tcp',
-    'uds',
-]
-_def_tpt_proto: TransportProtocolKey = 'tcp'
-
-
-def current_ipc_protos() -> list[str]:
-    '''
-    Return the list of IPC transport protocol keys currently
-    in use by this actor.
-
-    The keys are as declared by `MsgTransport` and `Address`
-    concrete-backend sub-types defined throughout `tractor.ipc`.
-
-    '''
-    return [_def_tpt_proto]

tractor/_streaming.py

@@ -56,7 +56,7 @@ from tractor.msg import (
 if TYPE_CHECKING:
     from ._runtime import Actor
     from ._context import Context
-    from .ipc import Channel
+    from ._ipc import Channel
 
 
 log = get_logger(__name__)
@@ -437,23 +437,22 @@ class MsgStream(trio.abc.Channel):
             message: str = (
                 f'Stream self-closed by {this_side!r}-side before EoC from {peer_side!r}\n'
                 # } bc a stream is a "scope"/msging-phase inside an IPC
-                f'c}}>\n'
+                f'x}}>\n'
                 f'  |_{self}\n'
             )
+            log.cancel(message)
+            self._eoc = trio.EndOfChannel(message)
+
             if (
                 (rx_chan := self._rx_chan)
                 and
                 (stats := rx_chan.statistics()).tasks_waiting_receive
             ):
-                message += (
-                    f'AND there is still reader tasks,\n'
-                    f'\n'
+                log.cancel(
+                    f'Msg-stream is closing but there is still reader tasks,\n'
                     f'{stats}\n'
                 )
 
-            log.cancel(message)
-            self._eoc = trio.EndOfChannel(message)
-
         # ?XXX WAIT, why do we not close the local mem chan `._rx_chan` XXX?
         # => NO, DEFINITELY NOT! <=
         # if we're a bi-dir `MsgStream` BECAUSE this same
@@ -596,17 +595,8 @@ class MsgStream(trio.abc.Channel):
             trio.ClosedResourceError,
             trio.BrokenResourceError,
             BrokenPipeError,
-        ) as _trans_err:
-            trans_err = _trans_err
-            if (
-                hide_tb
-                and
-                self._ctx.chan._exc is trans_err
-                # ^XXX, IOW, only if the channel is marked errored
-                # for the same reason as whatever its underlying
-                # transport raised, do we keep the full low-level tb
-                # suppressed from the user.
-            ):
+        ) as trans_err:
+            if hide_tb:
                 raise type(trans_err)(
                     *trans_err.args
                 ) from trans_err
@@ -812,12 +802,13 @@ async def open_stream_from_ctx(
                 # sanity, can remove?
                 assert eoc is stream._eoc
 
-                log.runtime(
+                log.warning(
                     'Stream was terminated by EoC\n\n'
                     # NOTE: won't show the error <Type> but
                     # does show txt followed by IPC msg.
                     f'{str(eoc)}\n'
                 )
+
         finally:
             if ctx._portal:
                 try:

tractor/_supervise.py

@@ -22,20 +22,13 @@ from contextlib import asynccontextmanager as acm
 from functools import partial
 import inspect
 from pprint import pformat
-from typing import (
-    TYPE_CHECKING,
-)
+from typing import TYPE_CHECKING
 import typing
 import warnings
 
 import trio
 
-
 from .devx._debug import maybe_wait_for_debugger
-from ._addr import (
-    UnwrappedAddress,
-    mk_uuid,
-)
 from ._state import current_actor, is_main_process
 from .log import get_logger, get_loglevel
 from ._runtime import Actor
@@ -44,21 +37,18 @@ from ._exceptions import (
     is_multi_cancelled,
     ContextCancelled,
 )
-from ._root import (
-    open_root_actor,
-)
+from ._root import open_root_actor
 from . import _state
 from . import _spawn
 
 
 if TYPE_CHECKING:
     import multiprocessing as mp
-    # from .ipc._server import IPCServer
-    from .ipc import IPCServer
-
 
 log = get_logger(__name__)
 
+_default_bind_addr: tuple[str, int] = ('127.0.0.1', 0)
+
 
 class ActorNursery:
     '''
@@ -140,9 +130,8 @@ class ActorNursery:
 
         *,
 
-        bind_addrs: list[UnwrappedAddress]|None = None,
+        bind_addrs: list[tuple[str, int]] = [_default_bind_addr],
         rpc_module_paths: list[str]|None = None,
-        enable_transports: list[str] = [_state._def_tpt_proto],
         enable_modules: list[str]|None = None,
         loglevel: str|None = None,  # set log level per subactor
         debug_mode: bool|None = None,
@@ -152,7 +141,6 @@ class ActorNursery:
         # a `._ria_nursery` since the dependent APIs have been
         # removed!
         nursery: trio.Nursery|None = None,
-        proc_kwargs: dict[str, any] = {}
 
     ) -> Portal:
         '''
@@ -189,9 +177,7 @@ class ActorNursery:
             enable_modules.extend(rpc_module_paths)
 
         subactor = Actor(
-            name=name,
-            uuid=mk_uuid(),
-
+            name,
             # modules allowed to invoked funcs from
             enable_modules=enable_modules,
             loglevel=loglevel,
@@ -199,7 +185,7 @@ class ActorNursery:
             # verbatim relay this actor's registrar addresses
             registry_addrs=current_actor().reg_addrs,
         )
-        parent_addr: UnwrappedAddress = self._actor.accept_addr
+        parent_addr = self._actor.accept_addr
         assert parent_addr
 
         # start a task to spawn a process
@@ -218,7 +204,6 @@ class ActorNursery:
                 parent_addr,
                 _rtv,  # run time vars
                 infect_asyncio=infect_asyncio,
-                proc_kwargs=proc_kwargs
             )
         )
 
@@ -237,12 +222,11 @@ class ActorNursery:
         *,
 
         name: str | None = None,
-        bind_addrs: UnwrappedAddress|None = None,
+        bind_addrs: tuple[str, int] = [_default_bind_addr],
         rpc_module_paths: list[str] | None = None,
         enable_modules: list[str] | None = None,
         loglevel: str | None = None,  # set log level per subactor
         infect_asyncio: bool = False,
-        proc_kwargs: dict[str, any] = {},
 
         **kwargs,  # explicit args to ``fn``
 
@@ -273,7 +257,6 @@ class ActorNursery:
             # use the run_in_actor nursery
             nursery=self._ria_nursery,
             infect_asyncio=infect_asyncio,
-            proc_kwargs=proc_kwargs
         )
 
         # XXX: don't allow stream funcs
@@ -318,13 +301,8 @@ class ActorNursery:
         children: dict = self._children
         child_count: int = len(children)
         msg: str = f'Cancelling actor nursery with {child_count} children\n'
-
-        server: IPCServer = self._actor.ipc_server
-
         with trio.move_on_after(3) as cs:
-            async with trio.open_nursery(
-                strict_exception_groups=False,
-            ) as tn:
+            async with trio.open_nursery() as tn:
 
                 subactor: Actor
                 proc: trio.Process
@@ -343,7 +321,7 @@ class ActorNursery:
 
                     else:
                         if portal is None:  # actor hasn't fully spawned yet
-                            event: trio.Event = server._peer_connected[subactor.uid]
+                            event = self._actor._peer_connected[subactor.uid]
                             log.warning(
                                 f"{subactor.uid} never 't finished spawning?"
                             )
@@ -359,7 +337,7 @@ class ActorNursery:
                             if portal is None:
                                 # cancelled while waiting on the event
                                 # to arrive
-                                chan = server._peers[subactor.uid][-1]
+                                chan = self._actor._peers[subactor.uid][-1]
                                 if chan:
                                     portal = Portal(chan)
                                 else:  # there's no other choice left

tractor/_testing/samples.py

@@ -1,99 +0,0 @@
-import hashlib
-import numpy as np
-
-
-def generate_single_byte_msgs(amount: int) -> bytes:
-    '''
-    Generate a byte instance of length `amount` with repeating ASCII digits 0..9.
-
-    '''
-    # array [0, 1, 2, ..., amount-1], take mod 10 => [0..9], and map 0->'0'(48)
-    # up to 9->'9'(57).
-    arr = np.arange(amount, dtype=np.uint8) % 10
-    # move into ascii space
-    arr += 48
-    return arr.tobytes()
-
-
-class RandomBytesGenerator:
-    '''
-    Generate bytes msgs for tests.
-
-    messages will have the following format:
-
-        b'[{i:08}]' + random_bytes
-
-    so for message index 25:
-
-        b'[00000025]' + random_bytes
-
-    also generates sha256 hash of msgs.
-
-    '''
-
-    def __init__(
-        self,
-        amount: int,
-        rand_min: int = 0,
-        rand_max: int = 0
-    ):
-        if rand_max < rand_min:
-            raise ValueError('rand_max must be >= rand_min')
-
-        self._amount = amount
-        self._rand_min = rand_min
-        self._rand_max = rand_max
-        self._index = 0
-        self._hasher = hashlib.sha256()
-        self._total_bytes = 0
-
-        self._lengths = np.random.randint(
-            rand_min,
-            rand_max + 1,
-            size=amount,
-            dtype=np.int32
-        )
-
-    def __iter__(self):
-        return self
-
-    def __next__(self) -> bytes:
-        if self._index == self._amount:
-            raise StopIteration
-
-        header = f'[{self._index:08}]'.encode('utf-8')
-
-        length = int(self._lengths[self._index])
-        msg = header + np.random.bytes(length)
-
-        self._hasher.update(msg)
-        self._total_bytes += length
-        self._index += 1
-
-        return msg
-
-    @property
-    def hexdigest(self) -> str:
-        return self._hasher.hexdigest()
-
-    @property
-    def total_bytes(self) -> int:
-        return self._total_bytes
-
-    @property
-    def total_msgs(self) -> int:
-        return self._amount
-
-    @property
-    def msgs_generated(self) -> int:
-        return self._index
-
-    @property
-    def recommended_log_interval(self) -> int:
-        max_msg_size = 10 + self._rand_max
-
-        if max_msg_size <= 32 * 1024:
-            return 10_000
-
-        else:
-            return 1000

tractor/devx/_debug.py

@@ -73,7 +73,6 @@ from tractor.log import get_logger
 from tractor._context import Context
 from tractor import _state
 from tractor._exceptions import (
-    DebugRequestError,
     InternalError,
     NoRuntime,
     is_multi_cancelled,
@@ -92,11 +91,7 @@ from tractor._state import (
 if TYPE_CHECKING:
     from trio.lowlevel import Task
     from threading import Thread
-    from tractor.ipc import (
-        Channel,
-        IPCServer,
-        # _server,  # TODO? export at top level?
-    )
+    from tractor._ipc import Channel
     from tractor._runtime import (
         Actor,
     )
@@ -1438,7 +1433,6 @@ def any_connected_locker_child() -> bool:
 
     '''
     actor: Actor = current_actor()
-    server: IPCServer = actor.ipc_server
 
     if not is_root_process():
         raise InternalError('This is a root-actor only API!')
@@ -1448,7 +1442,7 @@ def any_connected_locker_child() -> bool:
         and
         (uid_in_debug := ctx.chan.uid)
     ):
-        chans: list[tractor.Channel] = server._peers.get(
+        chans: list[tractor.Channel] = actor._peers.get(
             tuple(uid_in_debug)
         )
         if chans:
@@ -1746,6 +1740,13 @@ def sigint_shield(
 _pause_msg: str = 'Opening a pdb REPL in paused actor'
 
 
+class DebugRequestError(RuntimeError):
+    '''
+    Failed to request stdio lock from root actor!
+
+    '''
+
+
 _repl_fail_msg: str|None = (
     'Failed to REPl via `_pause()` '
 )
@@ -3008,7 +3009,6 @@ async def _maybe_enter_pm(
         [BaseException|BaseExceptionGroup],
         bool,
     ] = lambda err: not is_multi_cancelled(err),
-    **_pause_kws,
 
 ):
     if (
@@ -3035,7 +3035,6 @@ async def _maybe_enter_pm(
         await post_mortem(
             api_frame=api_frame,
             tb=tb,
-            **_pause_kws,
         )
         return True
 

tractor/devx/pformat.py

@@ -19,7 +19,6 @@ Pretty formatters for use throughout the code base.
 Mostly handy for logging and exception message content.
 
 '''
-import sys
 import textwrap
 import traceback
 
@@ -116,85 +115,6 @@ def pformat_boxed_tb(
     )
 
 
-def pformat_exc(
-    exc: Exception,
-    header: str = '',
-    message: str = '',
-    body: str = '',
-    with_type_header: bool = True,
-) -> str:
-
-    # XXX when the currently raised exception is this instance,
-    # we do not ever use the "type header" style repr.
-    is_being_raised: bool = False
-    if (
-        (curr_exc := sys.exception())
-        and
-        curr_exc is exc
-    ):
-        is_being_raised: bool = True
-
-    with_type_header: bool = (
-        with_type_header
-        and
-        not is_being_raised
-    )
-
-    # <RemoteActorError( .. )> style
-    if (
-        with_type_header
-        and
-        not header
-    ):
-        header: str = f'<{type(exc).__name__}('
-
-    message: str = (
-        message
-        or
-        exc.message
-    )
-    if message:
-        # split off the first line so, if needed, it isn't
-        # indented the same like the "boxed content" which
-        # since there is no `.tb_str` is just the `.message`.
-        lines: list[str] = message.splitlines()
-        first: str = lines[0]
-        message: str = message.removeprefix(first)
-
-        # with a type-style header we,
-        # - have no special message "first line" extraction/handling
-        # - place the message a space in from the header:
-        #  `MsgTypeError( <message> ..`
-        #                 ^-here
-        # - indent the `.message` inside the type body.
-        if with_type_header:
-            first = f' {first} )>'
-
-        message: str = textwrap.indent(
-            message,
-            prefix=' '*2,
-        )
-        message: str = first + message
-
-    tail: str = ''
-    if (
-        with_type_header
-        and
-        not message
-    ):
-        tail: str = '>'
-
-    return (
-        header
-        +
-        message
-        +
-        f'{body}'
-        +
-        tail
-    )
-
-
 def pformat_caller_frame(
     stack_limit: int = 1,
     box_tb: bool = True,

tractor/experimental/_pubsub.py

@@ -45,8 +45,6 @@ __all__ = ['pub']
 log = get_logger('messaging')
 
 
-# TODO! this needs to reworked to use the modern
-# `Context`/`MsgStream` APIs!!
 async def fan_out_to_ctxs(
     pub_async_gen_func: typing.Callable,  # it's an async gen ... gd mypy
     topics2ctxs: dict[str, list],

tractor/ipc/__init__.py

@@ -1,23 +0,0 @@
-# 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/>.
-'''
-A modular IPC layer supporting the power of cross-process SC!
-
-'''
-from ._chan import (
-    _connect_chan as _connect_chan,
-    Channel as Channel
-)

tractor/ipc/_chan.py

@@ -1,457 +0,0 @@
-# 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/>.
-
-"""
-Inter-process comms abstractions
-
-"""
-from __future__ import annotations
-from collections.abc import AsyncGenerator
-from contextlib import (
-    asynccontextmanager as acm,
-    contextmanager as cm,
-)
-import platform
-from pprint import pformat
-import typing
-from typing import (
-    Any,
-    TYPE_CHECKING,
-)
-import warnings
-
-import trio
-
-from ._types import (
-    transport_from_addr,
-    transport_from_stream,
-)
-from tractor._addr import (
-    is_wrapped_addr,
-    wrap_address,
-    Address,
-    UnwrappedAddress,
-)
-from tractor.log import get_logger
-from tractor._exceptions import (
-    MsgTypeError,
-    pack_from_raise,
-    TransportClosed,
-)
-from tractor.msg import (
-    Aid,
-    MsgCodec,
-)
-
-if TYPE_CHECKING:
-    from ._transport import MsgTransport
-
-
-log = get_logger(__name__)
-
-_is_windows = platform.system() == 'Windows'
-
-
-class Channel:
-    '''
-    An inter-process channel for communication between (remote) actors.
-
-    Wraps a ``MsgStream``: transport + encoding IPC connection.
-
-    Currently we only support ``trio.SocketStream`` for transport
-    (aka TCP) and the ``msgpack`` interchange format via the ``msgspec``
-    codec libary.
-
-    '''
-    def __init__(
-
-        self,
-        transport: MsgTransport|None = None,
-        # TODO: optional reconnection support?
-        # auto_reconnect: bool = False,
-        # on_reconnect: typing.Callable[..., typing.Awaitable] = None,
-
-    ) -> None:
-
-        # self._recon_seq = on_reconnect
-        # self._autorecon = auto_reconnect
-
-        # Either created in ``.connect()`` or passed in by
-        # user in ``.from_stream()``.
-        self._transport: MsgTransport|None = transport
-
-        # set after handshake - always info from peer end
-        self.aid: Aid|None = None
-
-        self._aiter_msgs = self._iter_msgs()
-        self._exc: Exception|None = None
-        # ^XXX! ONLY set if a remote actor sends an `Error`-msg
-        self._closed: bool = False
-
-        # flag set by ``Portal.cancel_actor()`` indicating remote
-        # (possibly peer) cancellation of the far end actor
-        # runtime.
-        self._cancel_called: bool = False
-
-    @property
-    def uid(self) -> tuple[str, str]:
-        '''
-        Peer actor's unique id.
-
-        '''
-        msg: str = (
-            f'`{type(self).__name__}.uid` is now deprecated.\n'
-            'Use the new `.aid: tractor.msg.Aid` (struct) instead '
-            'which also provides additional named (optional) fields '
-            'beyond just the `.name` and `.uuid`.'
-        )
-        warnings.warn(
-            msg,
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        peer_aid: Aid = self.aid
-        return (
-            peer_aid.name,
-            peer_aid.uuid,
-        )
-
-    @property
-    def stream(self) -> trio.abc.Stream | None:
-        return self._transport.stream if self._transport else None
-
-    @property
-    def msgstream(self) -> MsgTransport:
-        log.info(
-            '`Channel.msgstream` is an old name, use `._transport`'
-        )
-        return self._transport
-
-    @property
-    def transport(self) -> MsgTransport:
-        return self._transport
-
-    @classmethod
-    def from_stream(
-        cls,
-        stream: trio.abc.Stream,
-    ) -> Channel:
-        transport_cls = transport_from_stream(stream)
-        return Channel(
-            transport=transport_cls(stream)
-        )
-
-    @classmethod
-    async def from_addr(
-        cls,
-        addr: UnwrappedAddress,
-        **kwargs
-    ) -> Channel:
-
-        if not is_wrapped_addr(addr):
-            addr: Address = wrap_address(addr)
-
-        transport_cls = transport_from_addr(addr)
-        transport = await transport_cls.connect_to(
-            addr,
-            **kwargs,
-        )
-        assert transport.raddr == addr
-        chan = Channel(transport=transport)
-        log.runtime(
-            f'Connected channel IPC transport\n'
-            f'[>\n'
-            f' |_{chan}\n'
-        )
-        return chan
-
-    @cm
-    def apply_codec(
-        self,
-        codec: MsgCodec,
-    ) -> None:
-        '''
-        Temporarily override the underlying IPC msg codec for
-        dynamic enforcement of messaging schema.
-
-        '''
-        orig: MsgCodec = self._transport.codec
-        try:
-            self._transport.codec = codec
-            yield
-        finally:
-            self._transport.codec = orig
-
-    # TODO: do a .src/.dst: str for maddrs?
-    def pformat(self) -> str:
-        if not self._transport:
-            return '<Channel with inactive transport?>'
-
-        tpt: MsgTransport = self._transport
-        tpt_name: str = type(tpt).__name__
-        tpt_status: str = (
-            'connected' if self.connected()
-            else 'closed'
-        )
-        return (
-            f'<Channel(\n'
-            f' |_status: {tpt_status!r}\n'
-            f'   _closed={self._closed}\n'
-            f'   _cancel_called={self._cancel_called}\n'
-            f'\n'
-            f' |_peer: {self.aid}\n'
-            f'\n'
-            f' |_msgstream: {tpt_name}\n'
-            f'   proto={tpt.laddr.proto_key!r}\n'
-            f'   layer={tpt.layer_key!r}\n'
-            f'   laddr={tpt.laddr}\n'
-            f'   raddr={tpt.raddr}\n'
-            f'   codec={tpt.codec_key!r}\n'
-            f'   stream={tpt.stream}\n'
-            f'   maddr={tpt.maddr!r}\n'
-            f'   drained={tpt.drained}\n'
-            f'   _send_lock={tpt._send_lock.statistics()}\n'
-            f')>\n'
-        )
-
-    # NOTE: making this return a value that can be passed to
-    # `eval()` is entirely **optional** FYI!
-    # https://docs.python.org/3/library/functions.html#repr
-    # https://docs.python.org/3/reference/datamodel.html#object.__repr__
-    #
-    # Currently we target **readability** from a (console)
-    # logging perspective over `eval()`-ability since we do NOT
-    # target serializing non-struct instances!
-    # def __repr__(self) -> str:
-    __str__ = pformat
-    __repr__ = pformat
-
-    @property
-    def laddr(self) -> Address|None:
-        return self._transport.laddr if self._transport else None
-
-    @property
-    def raddr(self) -> Address|None:
-        return self._transport.raddr if self._transport else None
-
-    # TODO: something like,
-    # `pdbp.hideframe_on(errors=[MsgTypeError])`
-    # instead of the `try/except` hack we have rn..
-    # seems like a pretty useful thing to have in general
-    # along with being able to filter certain stack frame(s / sets)
-    # possibly based on the current log-level?
-    async def send(
-        self,
-        payload: Any,
-
-        hide_tb: bool = True,
-
-    ) -> None:
-        '''
-        Send a coded msg-blob over the transport.
-
-        '''
-        __tracebackhide__: bool = hide_tb
-        try:
-            log.transport(
-                '=> send IPC msg:\n\n'
-                f'{pformat(payload)}\n'
-            )
-            # assert self._transport  # but why typing?
-            await self._transport.send(
-                payload,
-                hide_tb=hide_tb,
-            )
-        except (
-            BaseException,
-            MsgTypeError,
-            TransportClosed,
-        )as _err:
-            err = _err  # bind for introspection
-            match err:
-                case MsgTypeError():
-                    try:
-                        assert err.cid
-                    except KeyError:
-                        raise err
-                case TransportClosed():
-                    log.transport(
-                        f'Transport stream closed due to\n'
-                        f'{err.repr_src_exc()}\n'
-                    )
-
-                case _:
-                    # never suppress non-tpt sources
-                    __tracebackhide__: bool = False
-            raise
-
-    async def recv(self) -> Any:
-        assert self._transport
-        return await self._transport.recv()
-
-        # TODO: auto-reconnect features like 0mq/nanomsg?
-        # -[ ] implement it manually with nods to SC prot
-        #      possibly on multiple transport backends?
-        #  -> seems like that might be re-inventing scalability
-        #     prots tho no?
-        # try:
-        #     return await self._transport.recv()
-        # except trio.BrokenResourceError:
-        #     if self._autorecon:
-        #         await self._reconnect()
-        #         return await self.recv()
-        #     raise
-
-    async def aclose(self) -> None:
-
-        log.transport(
-            f'Closing channel to {self.aid} '
-            f'{self.laddr} -> {self.raddr}'
-        )
-        assert self._transport
-        await self._transport.stream.aclose()
-        self._closed = True
-
-    async def __aenter__(self):
-        await self.connect()
-        return self
-
-    async def __aexit__(self, *args):
-        await self.aclose(*args)
-
-    def __aiter__(self):
-        return self._aiter_msgs
-
-    # ?TODO? run any reconnection sequence?
-    # -[ ] prolly should be impl-ed as deco-API?
-    #
-    # async def _reconnect(self) -> None:
-    #     """Handle connection failures by polling until a reconnect can be
-    #     established.
-    #     """
-    #     down = False
-    #     while True:
-    #         try:
-    #             with trio.move_on_after(3) as cancel_scope:
-    #                 await self.connect()
-    #             cancelled = cancel_scope.cancelled_caught
-    #             if cancelled:
-    #                 log.transport(
-    #                     "Reconnect timed out after 3 seconds, retrying...")
-    #                 continue
-    #             else:
-    #                 log.transport("Stream connection re-established!")
-
-    #                 # on_recon = self._recon_seq
-    #                 # if on_recon:
-    #                 #     await on_recon(self)
-
-    #                 break
-    #         except (OSError, ConnectionRefusedError):
-    #             if not down:
-    #                 down = True
-    #                 log.transport(
-    #                     f"Connection to {self.raddr} went down, waiting"
-    #                     " for re-establishment")
-    #             await trio.sleep(1)
-
-    async def _iter_msgs(
-        self
-    ) -> AsyncGenerator[Any, None]:
-        '''
-        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.
-
-        '''
-        assert self._transport
-        while True:
-            try:
-                async for msg in self._transport:
-                    match msg:
-                        # NOTE: if transport/interchange delivers
-                        # a type error, we pack it with the far
-                        # end peer `Actor.uid` and relay the
-                        # `Error`-msg upward to the `._rpc` stack
-                        # for normal RAE handling.
-                        case MsgTypeError():
-                            yield pack_from_raise(
-                                local_err=msg,
-                                cid=msg.cid,
-
-                                # XXX we pack it here bc lower
-                                # layers have no notion of an
-                                # actor-id ;)
-                                src_uid=self.uid,
-                            )
-                        case _:
-                            yield msg
-
-            except trio.BrokenResourceError:
-
-                # if not self._autorecon:
-                raise
-
-            await self.aclose()
-
-            # if self._autorecon:  # attempt reconnect
-            #     await self._reconnect()
-            #     continue
-
-    def connected(self) -> bool:
-        return self._transport.connected() if self._transport else False
-
-    async def _do_handshake(
-        self,
-        aid: Aid,
-
-    ) -> Aid:
-        '''
-        Exchange `(name, UUIDs)` identifiers as the first
-        communication step with any (peer) remote `Actor`.
-
-        These are essentially the "mailbox addresses" found in
-        "actor model" parlance.
-
-        '''
-        await self.send(aid)
-        peer_aid: Aid = await self.recv()
-        log.runtime(
-            f'Received hanshake with peer actor,\n'
-            f'{peer_aid}\n'
-        )
-        # NOTE, we always are referencing the remote peer!
-        self.aid = peer_aid
-        return peer_aid
-
-
-@acm
-async def _connect_chan(
-    addr: UnwrappedAddress
-) -> typing.AsyncGenerator[Channel, None]:
-    '''
-    Create and connect a channel with disconnect on context manager
-    teardown.
-
-    '''
-    chan = await Channel.from_addr(addr)
-    yield chan
-    with trio.CancelScope(shield=True):
-        await chan.aclose()

tractor/ipc/_fd_share.py

@@ -1,163 +0,0 @@
-# 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/>.
-'''
-File-descriptor-sharing on `linux` by "wilhelm_of_bohemia".
-
-'''
-from __future__ import annotations
-import os
-import array
-import socket
-import tempfile
-from pathlib import Path
-from contextlib import ExitStack
-
-import trio
-import tractor
-from tractor.ipc import RBToken
-
-
-actor_name = 'ringd'
-
-
-_rings: dict[str, dict] = {}
-
-
-async def _attach_to_ring(
-    ring_name: str
-) -> tuple[int, int, int]:
-    actor = tractor.current_actor()
-
-    fd_amount = 3
-    sock_path = (
-        Path(tempfile.gettempdir())
-        /
-        f'{os.getpid()}-pass-ring-fds-{ring_name}-to-{actor.name}.sock'
-    )
-    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-    sock.bind(sock_path)
-    sock.listen(1)
-
-    async with (
-        tractor.find_actor(actor_name) as ringd,
-        ringd.open_context(
-            _pass_fds,
-            name=ring_name,
-            sock_path=sock_path
-        ) as (ctx, _sent)
-    ):
-        # prepare array to receive FD
-        fds = array.array("i", [0] * fd_amount)
-
-        conn, _ = sock.accept()
-
-        # receive FD
-        msg, ancdata, flags, addr = conn.recvmsg(
-            1024,
-            socket.CMSG_LEN(fds.itemsize * fd_amount)
-        )
-
-        for (
-            cmsg_level,
-            cmsg_type,
-            cmsg_data,
-        ) in ancdata:
-            if (
-                cmsg_level == socket.SOL_SOCKET
-                and
-                cmsg_type == socket.SCM_RIGHTS
-            ):
-                fds.frombytes(cmsg_data[:fds.itemsize * fd_amount])
-                break
-            else:
-                raise RuntimeError("Receiver: No FDs received")
-
-        conn.close()
-        sock.close()
-        sock_path.unlink()
-
-        return RBToken.from_msg(
-            await ctx.wait_for_result()
-        )
-
-
-@tractor.context
-async def _pass_fds(
-    ctx: tractor.Context,
-    name: str,
-    sock_path: str
-) -> RBToken:
-    global _rings
-    token = _rings[name]
-    client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-    client.connect(sock_path)
-    await ctx.started()
-    fds = array.array('i', token.fds)
-    client.sendmsg([b'FDs'], [(socket.SOL_SOCKET, socket.SCM_RIGHTS, fds)])
-    client.close()
-    return token
-
-
-@tractor.context
-async def _open_ringbuf(
-    ctx: tractor.Context,
-    name: str,
-    buf_size: int
-) -> RBToken:
-    global _rings
-    is_owner = False
-    if name not in _rings:
-        stack = ExitStack()
-        token = stack.enter_context(
-            tractor.open_ringbuf(
-                name,
-                buf_size=buf_size
-            )
-        )
-        _rings[name] = {
-            'token': token,
-            'stack': stack,
-        }
-        is_owner = True
-
-    ring = _rings[name]
-    await ctx.started()
-
-    try:
-        await trio.sleep_forever()
-
-    except tractor.ContextCancelled:
-        ...
-
-    finally:
-        if is_owner:
-            ring['stack'].close()
-
-
-async def open_ringbuf(
-    name: str,
-    buf_size: int
-) -> RBToken:
-    async with (
-        tractor.find_actor(actor_name) as ringd,
-        ringd.open_context(
-            _open_ringbuf,
-            name=name,
-            buf_size=buf_size
-        ) as (rd_ctx, _)
-    ):
-        yield await _attach_to_ring(name)
-        await rd_ctx.cancel()

tractor/ipc/_mp_bs.py

@@ -1,45 +0,0 @@
-# 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/>.
-'''
-Utils to tame mp non-SC madeness
-
-'''
-def disable_mantracker():
-    '''
-    Disable all ``multiprocessing``` "resource tracking" machinery since
-    it's an absolute multi-threaded mess of non-SC madness.
-
-    '''
-    from multiprocessing import resource_tracker as mantracker
-
-    # Tell the "resource tracker" thing to fuck off.
-    class ManTracker(mantracker.ResourceTracker):
-        def register(self, name, rtype):
-            pass
-
-        def unregister(self, name, rtype):
-            pass
-
-        def ensure_running(self):
-            pass
-
-    # "know your land and know your prey"
-    # https://www.dailymotion.com/video/x6ozzco
-    mantracker._resource_tracker = ManTracker()
-    mantracker.register = mantracker._resource_tracker.register
-    mantracker.ensure_running = mantracker._resource_tracker.ensure_running
-    mantracker.unregister = mantracker._resource_tracker.unregister
-    mantracker.getfd = mantracker._resource_tracker.getfd

tractor/ipc/_ringbuf/_pubsub.py

@@ -1,834 +0,0 @@
-# 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/>.
-'''
-Ring buffer ipc publish-subscribe mechanism brokered by ringd
-can dynamically add new outputs (publisher) or inputs (subscriber)
-'''
-from typing import (
-    TypeVar,
-    Generic,
-    Callable,
-    Awaitable,
-    AsyncContextManager
-)
-from functools import partial
-from contextlib import asynccontextmanager as acm
-from dataclasses import dataclass
-
-import trio
-import tractor
-
-from msgspec.msgpack import (
-    Encoder,
-    Decoder
-)
-
-from tractor.ipc._ringbuf import (
-    RBToken,
-    PayloadT,
-    RingBufferSendChannel,
-    RingBufferReceiveChannel,
-    attach_to_ringbuf_sender,
-    attach_to_ringbuf_receiver
-)
-
-from tractor.trionics import (
-    order_send_channel,
-    order_receive_channel
-)
-
-import tractor.linux._fdshare as fdshare
-
-
-log = tractor.log.get_logger(__name__)
-
-
-ChannelType = TypeVar('ChannelType')
-
-
-@dataclass
-class ChannelInfo:
-    token: RBToken
-    channel: ChannelType
-    cancel_scope: trio.CancelScope
-    teardown: trio.Event
-
-
-class ChannelManager(Generic[ChannelType]):
-    '''
-    Helper for managing channel resources and their handler tasks with
-    cancellation, add or remove channels dynamically!
-
-    '''
-
-    def __init__(
-        self,
-        # nursery used to spawn channel handler tasks
-        n: trio.Nursery,
-
-        # acm will be used for setup & teardown of channel resources
-        open_channel_acm: Callable[..., AsyncContextManager[ChannelType]],
-
-        # long running bg task to handle channel
-        channel_task: Callable[..., Awaitable[None]]
-    ):
-        self._n = n
-        self._open_channel = open_channel_acm
-        self._channel_task = channel_task
-
-        # signal when a new channel conects and we previously had none
-        self._connect_event = trio.Event()
-
-        # store channel runtime variables
-        self._channels: list[ChannelInfo] = []
-
-        self._is_closed: bool = True
-
-    @property
-    def closed(self) -> bool:
-        return self._is_closed
-
-    @property
-    def channels(self) -> list[ChannelInfo]:
-        return self._channels
-
-    async def _channel_handler_task(
-        self,
-        token: RBToken,
-        task_status=trio.TASK_STATUS_IGNORED,
-        **kwargs
-    ):
-        '''
-        Open channel resources, add to internal data structures, signal channel
-        connect through trio.Event, and run `channel_task` with cancel scope,
-        and finally, maybe remove channel from internal data structures.
-
-        Spawned by `add_channel` function, lock is held from begining of fn
-        until `task_status.started()` call.
-
-        kwargs are proxied to `self._open_channel` acm.
-        '''
-        async with self._open_channel(
-            token,
-            **kwargs
-        ) as chan:
-            cancel_scope = trio.CancelScope()
-            info = ChannelInfo(
-                token=token,
-                channel=chan,
-                cancel_scope=cancel_scope,
-                teardown=trio.Event()
-            )
-            self._channels.append(info)
-
-            if len(self) == 1:
-                self._connect_event.set()
-
-            task_status.started()
-
-            with cancel_scope:
-                await self._channel_task(info)
-
-        self._maybe_destroy_channel(token.shm_name)
-
-    def _find_channel(self, name: str) -> tuple[int, ChannelInfo] | None:
-        '''
-        Given a channel name maybe return its index and value from
-        internal _channels list.
-
-        Only use after acquiring lock.
-        '''
-        for entry in enumerate(self._channels):
-            i, info = entry
-            if info.token.shm_name == name:
-                return entry
-
-        return None
-
-
-    def _maybe_destroy_channel(self, name: str):
-        '''
-        If channel exists cancel its scope and remove from internal
-        _channels list.
-
-        '''
-        maybe_entry = self._find_channel(name)
-        if maybe_entry:
-            i, info = maybe_entry
-            info.cancel_scope.cancel()
-            info.teardown.set()
-            del self._channels[i]
-
-    async def add_channel(
-        self,
-        token: RBToken,
-        **kwargs
-    ):
-        '''
-        Add a new channel to be handled
-
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        await self._n.start(partial(
-            self._channel_handler_task,
-            RBToken.from_msg(token),
-            **kwargs
-        ))
-
-    async def remove_channel(self, name: str):
-        '''
-        Remove a channel and stop its handling
-
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        maybe_entry = self._find_channel(name)
-        if not maybe_entry:
-            # return
-            raise RuntimeError(
-                f'tried to remove channel {name} but if does not exist'
-            )
-
-        i, info = maybe_entry
-        self._maybe_destroy_channel(name)
-
-        await info.teardown.wait()
-
-        # if that was last channel reset connect event
-        if len(self) == 0:
-            self._connect_event = trio.Event()
-
-    async def wait_for_channel(self):
-        '''
-        Wait until at least one channel added
-
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        await self._connect_event.wait()
-        self._connect_event = trio.Event()
-
-    def __len__(self) -> int:
-        return len(self._channels)
-
-    def __getitem__(self, name: str):
-        maybe_entry = self._find_channel(name)
-        if maybe_entry:
-            _, info = maybe_entry
-            return info
-
-        raise KeyError(f'Channel {name} not found!')
-
-    def open(self):
-        self._is_closed = False
-
-    async def close(self) -> None:
-        if self.closed:
-            log.warning('tried to close ChannelManager but its already closed...')
-            return
-
-        for info in self._channels:
-            if info.channel.closed:
-                continue
-
-            await info.channel.aclose()
-            await self.remove_channel(info.token.shm_name)
-
-        self._is_closed = True
-
-
-'''
-Ring buffer publisher & subscribe pattern mediated by `ringd` actor.
-
-'''
-
-
-class RingBufferPublisher(trio.abc.SendChannel[PayloadT]):
-    '''
-    Use ChannelManager to create a multi ringbuf round robin sender that can
-    dynamically add or remove more outputs.
-
-    Don't instantiate directly, use `open_ringbuf_publisher` acm to manage its
-    lifecycle.
-
-    '''
-    def __init__(
-        self,
-        n: trio.Nursery,
-
-        # amount of msgs to each ring before switching turns
-        msgs_per_turn: int = 1,
-
-        # global batch size for all channels
-        batch_size: int = 1,
-
-        encoder: Encoder | None = None
-    ):
-        self._batch_size: int = batch_size
-        self.msgs_per_turn = msgs_per_turn
-        self._enc = encoder
-
-        # helper to manage acms + long running tasks
-        self._chanmngr = ChannelManager[RingBufferSendChannel[PayloadT]](
-            n,
-            self._open_channel,
-            self._channel_task
-        )
-
-        # ensure no concurrent `.send()` calls
-        self._send_lock = trio.StrictFIFOLock()
-
-        # index of channel to be used for next send
-        self._next_turn: int = 0
-        # amount of messages sent this turn
-        self._turn_msgs: int = 0
-        # have we closed this publisher?
-        # set to `False` on `.__aenter__()`
-        self._is_closed: bool = True
-
-    @property
-    def closed(self) -> bool:
-        return self._is_closed
-
-    @property
-    def batch_size(self) -> int:
-        return self._batch_size
-
-    @batch_size.setter
-    def batch_size(self, value: int) -> None:
-        for info in self.channels:
-            info.channel.batch_size = value
-
-    @property
-    def channels(self) -> list[ChannelInfo]:
-        return self._chanmngr.channels
-
-    def _get_next_turn(self) -> int:
-        '''
-        Maybe switch turn and reset self._turn_msgs or just increment it.
-        Return current turn
-        '''
-        if self._turn_msgs == self.msgs_per_turn:
-            self._turn_msgs = 0
-            self._next_turn += 1
-
-            if self._next_turn >= len(self.channels):
-                self._next_turn = 0
-
-        else:
-            self._turn_msgs += 1
-
-        return self._next_turn
-
-    def get_channel(self, name: str) -> ChannelInfo:
-        '''
-        Get underlying ChannelInfo from name
-
-        '''
-        return self._chanmngr[name]
-
-    async def add_channel(
-        self,
-        token: RBToken,
-    ):
-        await self._chanmngr.add_channel(token)
-
-    async def remove_channel(self, name: str):
-        await self._chanmngr.remove_channel(name)
-
-    @acm
-    async def _open_channel(
-
-        self,
-        token: RBToken
-
-    ) -> AsyncContextManager[RingBufferSendChannel[PayloadT]]:
-        async with attach_to_ringbuf_sender(
-            token,
-            batch_size=self._batch_size,
-            encoder=self._enc
-        ) as ring:
-            yield ring
-
-    async def _channel_task(self, info: ChannelInfo) -> None:
-        '''
-        Wait forever until channel cancellation
-
-        '''
-        await trio.sleep_forever()
-
-    async def send(self, msg: bytes):
-        '''
-        If no output channels connected, wait until one, then fetch the next
-        channel based on turn.
-
-        Needs to acquire `self._send_lock` to ensure no concurrent calls.
-
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        if self._send_lock.locked():
-            raise trio.BusyResourceError
-
-        async with self._send_lock:
-            # wait at least one decoder connected
-            if len(self.channels) == 0:
-                await self._chanmngr.wait_for_channel()
-
-            turn = self._get_next_turn()
-
-            info = self.channels[turn]
-            await info.channel.send(msg)
-
-    async def broadcast(self, msg: PayloadT):
-        '''
-        Send a msg to all channels, if no channels connected, does nothing.
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        for info in self.channels:
-            await info.channel.send(msg)
-
-    async def flush(self, new_batch_size: int | None = None):
-        for info in self.channels:
-            try:
-                await info.channel.flush(new_batch_size=new_batch_size)
-
-            except trio.ClosedResourceError:
-                ...
-
-    async def __aenter__(self):
-        self._is_closed = False
-        self._chanmngr.open()
-        return self
-
-    async def aclose(self) -> None:
-        if self.closed:
-            log.warning('tried to close RingBufferPublisher but its already closed...')
-            return
-
-        await self._chanmngr.close()
-
-        self._is_closed = True
-
-
-class RingBufferSubscriber(trio.abc.ReceiveChannel[PayloadT]):
-    '''
-    Use ChannelManager to create a multi ringbuf receiver that can
-    dynamically add or remove more inputs and combine all into a single output.
-
-    In order for `self.receive` messages to be returned in order, publisher
-    will send all payloads as `OrderedPayload` msgpack encoded msgs, this
-    allows our channel handler tasks to just stash the out of order payloads
-    inside `self._pending_payloads` and if a in order payload is available
-    signal through `self._new_payload_event`.
-
-    On `self.receive` we wait until at least one channel is connected, then if
-    an in order payload is pending, we pop and return it, in case no in order
-    payload is available wait until next `self._new_payload_event.set()`.
-
-    '''
-    def __init__(
-        self,
-        n: trio.Nursery,
-
-        decoder: Decoder | None = None
-    ):
-        self._dec = decoder
-        self._chanmngr = ChannelManager[RingBufferReceiveChannel[PayloadT]](
-            n,
-            self._open_channel,
-            self._channel_task
-        )
-
-        self._schan, self._rchan = trio.open_memory_channel(0)
-
-        self._is_closed: bool = True
-
-        self._receive_lock = trio.StrictFIFOLock()
-
-    @property
-    def closed(self) -> bool:
-        return self._is_closed
-
-    @property
-    def channels(self) -> list[ChannelInfo]:
-        return self._chanmngr.channels
-
-    def get_channel(self, name: str):
-        return self._chanmngr[name]
-
-    async def add_channel(
-        self,
-        token: RBToken
-    ):
-        await self._chanmngr.add_channel(token)
-
-    async def remove_channel(self, name: str):
-        await self._chanmngr.remove_channel(name)
-
-    @acm
-    async def _open_channel(
-
-        self,
-        token: RBToken
-
-    ) -> AsyncContextManager[RingBufferSendChannel]:
-        async with attach_to_ringbuf_receiver(
-            token,
-            decoder=self._dec
-        ) as ring:
-            yield ring
-
-    async def _channel_task(self, info: ChannelInfo) -> None:
-        '''
-        Iterate over receive channel messages, decode them as `OrderedPayload`s
-        and stash them in `self._pending_payloads`, in case we can pop next in
-        order payload, signal through setting `self._new_payload_event`.
-
-        '''
-        while True:
-            try:
-                msg = await info.channel.receive()
-                await self._schan.send(msg)
-
-            except tractor.linux.eventfd.EFDReadCancelled as e:
-                # when channel gets removed while we are doing a receive
-                log.exception(e)
-                break
-
-            except trio.EndOfChannel:
-                break
-
-            except trio.ClosedResourceError:
-                break
-
-    async def receive(self) -> PayloadT:
-        '''
-        Receive next in order msg
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        if self._receive_lock.locked():
-            raise trio.BusyResourceError
-
-        async with self._receive_lock:
-            return await self._rchan.receive()
-
-    async def __aenter__(self):
-        self._is_closed = False
-        self._chanmngr.open()
-        return self
-
-    async def aclose(self) -> None:
-        if self.closed:
-            return
-
-        await self._chanmngr.close()
-        await self._schan.aclose()
-        await self._rchan.aclose()
-
-        self._is_closed = True
-
-
-'''
-Actor module for managing publisher & subscriber channels remotely through
-`tractor.context` rpc
-'''
-
-@dataclass
-class PublisherEntry:
-    publisher: RingBufferPublisher | None = None
-    is_set: trio.Event = trio.Event()
-
-
-_publishers: dict[str, PublisherEntry] = {}
-
-
-def maybe_init_publisher(topic: str) -> PublisherEntry:
-    entry = _publishers.get(topic, None)
-    if not entry:
-        entry = PublisherEntry()
-        _publishers[topic] = entry
-
-    return entry
-
-
-def set_publisher(topic: str, pub: RingBufferPublisher):
-    global _publishers
-
-    entry = _publishers.get(topic, None)
-    if not entry:
-        entry = maybe_init_publisher(topic)
-
-    if entry.publisher:
-        raise RuntimeError(
-            f'publisher for topic {topic} already set on {tractor.current_actor()}'
-        )
-
-    entry.publisher = pub
-    entry.is_set.set()
-
-
-def get_publisher(topic: str = 'default') -> RingBufferPublisher:
-    entry = _publishers.get(topic, None)
-    if not entry or not entry.publisher:
-        raise RuntimeError(
-            f'{tractor.current_actor()} tried to get publisher'
-            'but it\'s not set'
-        )
-
-    return entry.publisher
-
-
-async def wait_publisher(topic: str) -> RingBufferPublisher:
-    entry = maybe_init_publisher(topic)
-    await entry.is_set.wait()
-    return entry.publisher
-
-
-@tractor.context
-async def _add_pub_channel(
-    ctx: tractor.Context,
-    topic: str,
-    token: RBToken
-):
-    publisher = await wait_publisher(topic)
-    await publisher.add_channel(token)
-
-
-@tractor.context
-async def _remove_pub_channel(
-    ctx: tractor.Context,
-    topic: str,
-    ring_name: str
-):
-    publisher = await wait_publisher(topic)
-    maybe_token = fdshare.maybe_get_fds(ring_name)
-    if maybe_token:
-        await publisher.remove_channel(ring_name)
-
-
-@acm
-async def open_pub_channel_at(
-    actor_name: str,
-    token: RBToken,
-    topic: str = 'default',
-):
-    async with tractor.find_actor(actor_name) as portal:
-        await portal.run(_add_pub_channel, topic=topic, token=token)
-        try:
-            yield
-
-        except trio.Cancelled:
-            log.warning(
-                'open_pub_channel_at got cancelled!\n'
-                f'\tactor_name = {actor_name}\n'
-                f'\ttoken = {token}\n'
-            )
-            raise
-
-        await portal.run(_remove_pub_channel, topic=topic, ring_name=token.shm_name)
-
-
-@dataclass
-class SubscriberEntry:
-    subscriber: RingBufferSubscriber | None = None
-    is_set: trio.Event = trio.Event()
-
-
-_subscribers: dict[str, SubscriberEntry] = {}
-
-
-def maybe_init_subscriber(topic: str) -> SubscriberEntry:
-    entry = _subscribers.get(topic, None)
-    if not entry:
-        entry = SubscriberEntry()
-        _subscribers[topic] = entry
-
-    return entry
-
-
-def set_subscriber(topic: str, sub: RingBufferSubscriber):
-    global _subscribers
-
-    entry = _subscribers.get(topic, None)
-    if not entry:
-        entry = maybe_init_subscriber(topic)
-
-    if entry.subscriber:
-        raise RuntimeError(
-            f'subscriber for topic {topic} already set on {tractor.current_actor()}'
-        )
-
-    entry.subscriber = sub
-    entry.is_set.set()
-
-
-def get_subscriber(topic: str = 'default') -> RingBufferSubscriber:
-    entry = _subscribers.get(topic, None)
-    if not entry or not entry.subscriber:
-        raise RuntimeError(
-            f'{tractor.current_actor()} tried to get subscriber'
-            'but it\'s not set'
-        )
-
-    return entry.subscriber
-
-
-async def wait_subscriber(topic: str) -> RingBufferSubscriber:
-    entry = maybe_init_subscriber(topic)
-    await entry.is_set.wait()
-    return entry.subscriber
-
-
-@tractor.context
-async def _add_sub_channel(
-    ctx: tractor.Context,
-    topic: str,
-    token: RBToken
-):
-    subscriber = await wait_subscriber(topic)
-    await subscriber.add_channel(token)
-
-
-@tractor.context
-async def _remove_sub_channel(
-    ctx: tractor.Context,
-    topic: str,
-    ring_name: str
-):
-    subscriber = await wait_subscriber(topic)
-    maybe_token = fdshare.maybe_get_fds(ring_name)
-    if maybe_token:
-        await subscriber.remove_channel(ring_name)
-
-
-@acm
-async def open_sub_channel_at(
-    actor_name: str,
-    token: RBToken,
-    topic: str = 'default',
-):
-    async with tractor.find_actor(actor_name) as portal:
-        await portal.run(_add_sub_channel, topic=topic, token=token)
-        try:
-            yield
-
-        except trio.Cancelled:
-            log.warning(
-                'open_sub_channel_at got cancelled!\n'
-                f'\tactor_name = {actor_name}\n'
-                f'\ttoken = {token}\n'
-            )
-            raise
-
-        await portal.run(_remove_sub_channel, topic=topic, ring_name=token.shm_name)
-
-
-'''
-High level helpers to open publisher & subscriber
-'''
-
-
-@acm
-async def open_ringbuf_publisher(
-    # name to distinguish this publisher
-    topic: str = 'default',
-
-    # global batch size for channels
-    batch_size: int = 1,
-
-    # messages before changing output channel
-    msgs_per_turn: int = 1,
-
-    encoder: Encoder | None = None,
-
-    # ensure subscriber receives in same order publisher sent
-    # causes it to use wrapped payloads which contain the og
-    # index
-    guarantee_order: bool = False,
-
-    # on creation, set the `_publisher` global in order to use the provided
-    # tractor.context & helper utils for adding and removing new channels from
-    # remote actors
-    set_module_var: bool = True
-
-) -> AsyncContextManager[RingBufferPublisher]:
-    '''
-    Open a new ringbuf publisher
-
-    '''
-    async with (
-        trio.open_nursery(strict_exception_groups=False) as n,
-        RingBufferPublisher(
-            n,
-            batch_size=batch_size,
-            encoder=encoder,
-        ) as publisher
-    ):
-        if guarantee_order:
-            order_send_channel(publisher)
-
-        if set_module_var:
-            set_publisher(topic, publisher)
-
-        yield publisher
-
-        n.cancel_scope.cancel()
-
-
-@acm
-async def open_ringbuf_subscriber(
-    # name to distinguish this subscriber
-    topic: str = 'default',
-
-    decoder: Decoder | None = None,
-
-    # expect indexed payloads and unwrap them in order
-    guarantee_order: bool = False,
-
-    # on creation, set the `_subscriber` global in order to use the provided
-    # tractor.context & helper utils for adding and removing new channels from
-    # remote actors
-    set_module_var: bool = True
-) -> AsyncContextManager[RingBufferPublisher]:
-    '''
-    Open a new ringbuf subscriber
-
-    '''
-    async with (
-        trio.open_nursery(strict_exception_groups=False) as n,
-        RingBufferSubscriber(n, decoder=decoder) as subscriber
-    ):
-        # maybe monkey patch `.receive` to use indexed payloads
-        if guarantee_order:
-            order_receive_channel(subscriber)
-
-        # maybe set global module var for remote actor channel updates
-        if set_module_var:
-            set_subscriber(topic, subscriber)
-
-        yield subscriber
-
-        n.cancel_scope.cancel()

tractor/ipc/_shm.py

@@ -1,812 +0,0 @@
-# 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/>.
-
-"""
-SC friendly shared memory management geared at real-time
-processing.
-
-Support for ``numpy`` compatible array-buffers is provided but is
-considered optional within the context of this runtime-library.
-
-"""
-from __future__ import annotations
-from sys import byteorder
-import time
-from typing import Optional
-from multiprocessing import shared_memory as shm
-from multiprocessing.shared_memory import (
-    SharedMemory,
-    ShareableList,
-)
-
-from msgspec import (
-    Struct,
-    to_builtins
-)
-import tractor
-
-from tractor.ipc._mp_bs import disable_mantracker
-from tractor.log import get_logger
-
-
-_USE_POSIX = getattr(shm, '_USE_POSIX', False)
-if _USE_POSIX:
-    from _posixshmem import shm_unlink
-
-
-try:
-    import numpy as np
-    from numpy.lib import recfunctions as rfn
-    # TODO ruff complains with,
-    # warning| F401: `nptyping` imported but unused; consider using
-    # `importlib.util.find_spec` to test for availability
-    import nptyping  # noqa
-except ImportError:
-    pass
-
-
-log = get_logger(__name__)
-
-
-disable_mantracker()
-
-
-class SharedInt:
-    '''
-    Wrapper around a single entry shared memory array which
-    holds an ``int`` value used as an index counter.
-
-    '''
-    def __init__(
-        self,
-        shm: SharedMemory,
-    ) -> None:
-        self._shm = shm
-
-    @property
-    def value(self) -> int:
-        return int.from_bytes(self._shm.buf, byteorder)
-
-    @value.setter
-    def value(self, value) -> None:
-        self._shm.buf[:] = value.to_bytes(self._shm.size, byteorder)
-
-    def destroy(self) -> None:
-        if _USE_POSIX:
-            # We manually unlink to bypass all the "resource tracker"
-            # nonsense meant for non-SC systems.
-            name = self._shm.name
-            try:
-                shm_unlink(name)
-            except FileNotFoundError:
-                # might be a teardown race here?
-                log.warning(f'Shm for {name} already unlinked?')
-
-
-class NDToken(Struct, frozen=True):
-    '''
-    Internal represenation of a shared memory ``numpy`` array "token"
-    which can be used to key and load a system (OS) wide shm entry
-    and correctly read the array by type signature.
-
-    This type is msg safe.
-
-    '''
-    shm_name: str  # this servers as a "key" value
-    shm_first_index_name: str
-    shm_last_index_name: str
-    dtype_descr: tuple
-    size: int  # in struct-array index / row terms
-
-    # TODO: use nptyping here on dtypes
-    @property
-    def dtype(self) -> list[tuple[str, str, tuple[int, ...]]]:
-        return np.dtype(
-            list(
-                map(tuple, self.dtype_descr)
-            )
-        ).descr
-
-    def as_msg(self):
-        return to_builtins(self)
-
-    @classmethod
-    def from_msg(cls, msg: dict) -> NDToken:
-        if isinstance(msg, NDToken):
-            return msg
-
-        # TODO: native struct decoding
-        # return _token_dec.decode(msg)
-
-        msg['dtype_descr'] = tuple(map(tuple, msg['dtype_descr']))
-        return NDToken(**msg)
-
-
-# _token_dec = msgspec.msgpack.Decoder(NDToken)
-
-# TODO: this api?
-# _known_tokens = tractor.ActorVar('_shm_tokens', {})
-# _known_tokens = tractor.ContextStack('_known_tokens', )
-# _known_tokens = trio.RunVar('shms', {})
-
-# TODO: this should maybe be provided via
-# a `.trionics.maybe_open_context()` wrapper factory?
-# process-local store of keys to tokens
-_known_tokens: dict[str, NDToken] = {}
-
-
-def get_shm_token(key: str) -> NDToken | None:
-    '''
-    Convenience func to check if a token
-    for the provided key is known by this process.
-
-    Returns either the ``numpy`` token or a string for a shared list.
-
-    '''
-    return _known_tokens.get(key)
-
-
-def _make_token(
-    key: str,
-    size: int,
-    dtype: np.dtype,
-
-) -> NDToken:
-    '''
-    Create a serializable token that can be used
-    to access a shared array.
-
-    '''
-    return NDToken(
-        shm_name=key,
-        shm_first_index_name=key + "_first",
-        shm_last_index_name=key + "_last",
-        dtype_descr=tuple(np.dtype(dtype).descr),
-        size=size,
-    )
-
-
-class ShmArray:
-    '''
-    A shared memory ``numpy.ndarray`` API.
-
-    An underlying shared memory buffer is allocated based on
-    a user specified ``numpy.ndarray``. This fixed size array
-    can be read and written to by pushing data both onto the "front"
-    or "back" of a set index range. The indexes for the "first" and
-    "last" index are themselves stored in shared memory (accessed via
-    ``SharedInt`` interfaces) values such that multiple processes can
-    interact with the same array using a synchronized-index.
-
-    '''
-    def __init__(
-        self,
-        shmarr: np.ndarray,
-        first: SharedInt,
-        last: SharedInt,
-        shm: SharedMemory,
-        # readonly: bool = True,
-    ) -> None:
-        self._array = shmarr
-
-        # indexes for first and last indices corresponding
-        # to fille data
-        self._first = first
-        self._last = last
-
-        self._len = len(shmarr)
-        self._shm = shm
-        self._post_init: bool = False
-
-        # pushing data does not write the index (aka primary key)
-        self._write_fields: list[str] | None = None
-        dtype = shmarr.dtype
-        if dtype.fields:
-            self._write_fields = list(shmarr.dtype.fields.keys())[1:]
-
-    # TODO: ringbuf api?
-
-    @property
-    def _token(self) -> NDToken:
-        return NDToken(
-            shm_name=self._shm.name,
-            shm_first_index_name=self._first._shm.name,
-            shm_last_index_name=self._last._shm.name,
-            dtype_descr=tuple(self._array.dtype.descr),
-            size=self._len,
-        )
-
-    @property
-    def token(self) -> dict:
-        """Shared memory token that can be serialized and used by
-        another process to attach to this array.
-        """
-        return self._token.as_msg()
-
-    @property
-    def index(self) -> int:
-        return self._last.value % self._len
-
-    @property
-    def array(self) -> np.ndarray:
-        '''
-        Return an up-to-date ``np.ndarray`` view of the
-        so-far-written data to the underlying shm buffer.
-
-        '''
-        a = self._array[self._first.value:self._last.value]
-
-        # first, last = self._first.value, self._last.value
-        # a = self._array[first:last]
-
-        # TODO: eventually comment this once we've not seen it in the
-        # wild in a long time..
-        # XXX: race where first/last indexes cause a reader
-        # to load an empty array..
-        if len(a) == 0 and self._post_init:
-            raise RuntimeError('Empty array race condition hit!?')
-            # breakpoint()
-
-        return a
-
-    def ustruct(
-        self,
-        fields: Optional[list[str]] = None,
-
-        # type that all field values will be cast to
-        # in the returned view.
-        common_dtype: np.dtype = float,
-
-    ) -> np.ndarray:
-
-        array = self._array
-
-        if fields:
-            selection = array[fields]
-            # fcount = len(fields)
-        else:
-            selection = array
-            # fcount = len(array.dtype.fields)
-
-        # XXX: manual ``.view()`` attempt that also doesn't work.
-        # uview = selection.view(
-        #     dtype='<f16',
-        # ).reshape(-1, 4, order='A')
-
-        # assert len(selection) == len(uview)
-
-        u = rfn.structured_to_unstructured(
-            selection,
-            # dtype=float,
-            copy=True,
-        )
-
-        # unstruct = np.ndarray(u.shape, dtype=a.dtype, buffer=shm.buf)
-        # array[:] = a[:]
-        return u
-        # return ShmArray(
-        #     shmarr=u,
-        #     first=self._first,
-        #     last=self._last,
-        #     shm=self._shm
-        # )
-
-    def last(
-        self,
-        length: int = 1,
-
-    ) -> np.ndarray:
-        '''
-        Return the last ``length``'s worth of ("row") entries from the
-        array.
-
-        '''
-        return self.array[-length:]
-
-    def push(
-        self,
-        data: np.ndarray,
-
-        field_map: Optional[dict[str, str]] = None,
-        prepend: bool = False,
-        update_first: bool = True,
-        start: int | None = None,
-
-    ) -> int:
-        '''
-        Ring buffer like "push" to append data
-        into the buffer and return updated "last" index.
-
-        NB: no actual ring logic yet to give a "loop around" on overflow
-        condition, lel.
-
-        '''
-        length = len(data)
-
-        if prepend:
-            index = (start or self._first.value) - length
-
-            if index < 0:
-                raise ValueError(
-                    f'Array size of {self._len} was overrun during prepend.\n'
-                    f'You have passed {abs(index)} too many datums.'
-                )
-
-        else:
-            index = start if start is not None else self._last.value
-
-        end = index + length
-
-        if field_map:
-            src_names, dst_names = zip(*field_map.items())
-        else:
-            dst_names = src_names = self._write_fields
-
-        try:
-            self._array[
-                list(dst_names)
-            ][index:end] = data[list(src_names)][:]
-
-            # NOTE: there was a race here between updating
-            # the first and last indices and when the next reader
-            # tries to access ``.array`` (which due to the index
-            # overlap will be empty). Pretty sure we've fixed it now
-            # but leaving this here as a reminder.
-            if (
-                prepend
-                and update_first
-                and length
-            ):
-                assert index < self._first.value
-
-            if (
-                index < self._first.value
-                and update_first
-            ):
-                assert prepend, 'prepend=True not passed but index decreased?'
-                self._first.value = index
-
-            elif not prepend:
-                self._last.value = end
-
-            self._post_init = True
-            return end
-
-        except ValueError as err:
-            if field_map:
-                raise
-
-            # should raise if diff detected
-            self.diff_err_fields(data)
-            raise err
-
-    def diff_err_fields(
-        self,
-        data: np.ndarray,
-    ) -> None:
-        # reraise with any field discrepancy
-        our_fields, their_fields = (
-            set(self._array.dtype.fields),
-            set(data.dtype.fields),
-        )
-
-        only_in_ours = our_fields - their_fields
-        only_in_theirs = their_fields - our_fields
-
-        if only_in_ours:
-            raise TypeError(
-                f"Input array is missing field(s): {only_in_ours}"
-            )
-        elif only_in_theirs:
-            raise TypeError(
-                f"Input array has unknown field(s): {only_in_theirs}"
-            )
-
-    # TODO: support "silent" prepends that don't update ._first.value?
-    def prepend(
-        self,
-        data: np.ndarray,
-    ) -> int:
-        end = self.push(data, prepend=True)
-        assert end
-
-    def close(self) -> None:
-        self._first._shm.close()
-        self._last._shm.close()
-        self._shm.close()
-
-    def destroy(self) -> None:
-        if _USE_POSIX:
-            # We manually unlink to bypass all the "resource tracker"
-            # nonsense meant for non-SC systems.
-            shm_unlink(self._shm.name)
-
-        self._first.destroy()
-        self._last.destroy()
-
-    def flush(self) -> None:
-        # TODO: flush to storage backend like markestore?
-        ...
-
-
-def open_shm_ndarray(
-    size: int,
-    key: str | None = None,
-    dtype: np.dtype | None = None,
-    append_start_index: int | None = None,
-    readonly: bool = False,
-
-) -> ShmArray:
-    '''
-    Open a memory shared ``numpy`` using the standard library.
-
-    This call unlinks (aka permanently destroys) the buffer on teardown
-    and thus should be used from the parent-most accessor (process).
-
-    '''
-    # create new shared mem segment for which we
-    # have write permission
-    a = np.zeros(size, dtype=dtype)
-    a['index'] = np.arange(len(a))
-
-    shm = SharedMemory(
-        name=key,
-        create=True,
-        size=a.nbytes
-    )
-    array = np.ndarray(
-        a.shape,
-        dtype=a.dtype,
-        buffer=shm.buf
-    )
-    array[:] = a[:]
-    array.setflags(write=int(not readonly))
-
-    token = _make_token(
-        key=key,
-        size=size,
-        dtype=dtype,
-    )
-
-    # create single entry arrays for storing an first and last indices
-    first = SharedInt(
-        shm=SharedMemory(
-            name=token.shm_first_index_name,
-            create=True,
-            size=4,  # std int
-        )
-    )
-
-    last = SharedInt(
-        shm=SharedMemory(
-            name=token.shm_last_index_name,
-            create=True,
-            size=4,  # std int
-        )
-    )
-
-    # Start the "real-time" append-updated (or "pushed-to") section
-    # after some start index: ``append_start_index``. This allows appending
-    # from a start point in the array which isn't the 0 index and looks
-    # something like,
-    # -------------------------
-    # |              |        i
-    # _________________________
-    # <-------------> <------->
-    #  history         real-time
-    #
-    # Once fully "prepended", the history section will leave the
-    # ``ShmArray._start.value: int = 0`` and the yet-to-be written
-    # real-time section will start at ``ShmArray.index: int``.
-
-    # this sets the index to nearly 2/3rds into the the length of
-    # the buffer leaving at least a "days worth of second samples"
-    # for the real-time section.
-    if append_start_index is None:
-        append_start_index = round(size * 0.616)
-
-    last.value = first.value = append_start_index
-
-    shmarr = ShmArray(
-        array,
-        first,
-        last,
-        shm,
-    )
-
-    assert shmarr._token == token
-    _known_tokens[key] = shmarr.token
-
-    # "unlink" created shm on process teardown by
-    # pushing teardown calls onto actor context stack
-    stack = tractor.current_actor().lifetime_stack
-    stack.callback(shmarr.close)
-    stack.callback(shmarr.destroy)
-
-    return shmarr
-
-
-def attach_shm_ndarray(
-    token: tuple[str, str, tuple[str, str]],
-    readonly: bool = True,
-
-) -> ShmArray:
-    '''
-    Attach to an existing shared memory array previously
-    created by another process using ``open_shared_array``.
-
-    No new shared mem is allocated but wrapper types for read/write
-    access are constructed.
-
-    '''
-    token = NDToken.from_msg(token)
-    key = token.shm_name
-
-    if key in _known_tokens:
-        assert NDToken.from_msg(_known_tokens[key]) == token, "WTF"
-
-    # XXX: ugh, looks like due to the ``shm_open()`` C api we can't
-    # actually place files in a subdir, see discussion here:
-    # https://stackoverflow.com/a/11103289
-
-    # attach to array buffer and view as per dtype
-    _err: Optional[Exception] = None
-    for _ in range(3):
-        try:
-            shm = SharedMemory(
-                name=key,
-                create=False,
-            )
-            break
-        except OSError as oserr:
-            _err = oserr
-            time.sleep(0.1)
-    else:
-        if _err:
-            raise _err
-
-    shmarr = np.ndarray(
-        (token.size,),
-        dtype=token.dtype,
-        buffer=shm.buf
-    )
-    shmarr.setflags(write=int(not readonly))
-
-    first = SharedInt(
-        shm=SharedMemory(
-            name=token.shm_first_index_name,
-            create=False,
-            size=4,  # std int
-        ),
-    )
-    last = SharedInt(
-        shm=SharedMemory(
-            name=token.shm_last_index_name,
-            create=False,
-            size=4,  # std int
-        ),
-    )
-
-    # make sure we can read
-    first.value
-
-    sha = ShmArray(
-        shmarr,
-        first,
-        last,
-        shm,
-    )
-    # read test
-    sha.array
-
-    # Stash key -> token knowledge for future queries
-    # via `maybe_opepn_shm_array()` but only after we know
-    # we can attach.
-    if key not in _known_tokens:
-        _known_tokens[key] = token
-
-    # "close" attached shm on actor teardown
-    tractor.current_actor().lifetime_stack.callback(sha.close)
-
-    return sha
-
-
-def maybe_open_shm_ndarray(
-    key: str,  # unique identifier for segment
-    size: int,
-    dtype: np.dtype | None = None,
-    append_start_index: int = 0,
-    readonly: bool = True,
-
-) -> tuple[ShmArray, bool]:
-    '''
-    Attempt to attach to a shared memory block using a "key" lookup
-    to registered blocks in the users overall "system" registry
-    (presumes you don't have the block's explicit token).
-
-    This function is meant to solve the problem of discovering whether
-    a shared array token has been allocated or discovered by the actor
-    running in **this** process. Systems where multiple actors may seek
-    to access a common block can use this function to attempt to acquire
-    a token as discovered by the actors who have previously stored
-    a "key" -> ``NDToken`` map in an actor local (aka python global)
-    variable.
-
-    If you know the explicit ``NDToken`` for your memory segment instead
-    use ``attach_shm_array``.
-
-    '''
-    try:
-        # see if we already know this key
-        token = _known_tokens[key]
-        return (
-            attach_shm_ndarray(
-                token=token,
-                readonly=readonly,
-            ),
-            False,  # not newly opened
-        )
-    except KeyError:
-        log.warning(f"Could not find {key} in shms cache")
-        if dtype:
-            token = _make_token(
-                key,
-                size=size,
-                dtype=dtype,
-            )
-        else:
-
-            try:
-                return (
-                    attach_shm_ndarray(
-                        token=token,
-                        readonly=readonly,
-                    ),
-                    False,
-                )
-            except FileNotFoundError:
-                log.warning(f"Could not attach to shm with token {token}")
-
-        # This actor does not know about memory
-        # associated with the provided "key".
-        # Attempt to open a block and expect
-        # to fail if a block has been allocated
-        # on the OS by someone else.
-        return (
-            open_shm_ndarray(
-                key=key,
-                size=size,
-                dtype=dtype,
-                append_start_index=append_start_index,
-                readonly=readonly,
-            ),
-            True,
-        )
-
-
-class ShmList(ShareableList):
-    '''
-    Carbon copy of ``.shared_memory.ShareableList`` with a few
-    enhancements:
-
-    - readonly mode via instance var flag  `._readonly: bool`
-    - ``.__getitem__()`` accepts ``slice`` inputs
-    - exposes the underlying buffer "name" as a ``.key: str``
-
-    '''
-    def __init__(
-        self,
-        sequence: list | None = None,
-        *,
-        name: str | None = None,
-        readonly: bool = True
-
-    ) -> None:
-        self._readonly = readonly
-        self._key = name
-        return super().__init__(
-            sequence=sequence,
-            name=name,
-        )
-
-    @property
-    def key(self) -> str:
-        return self._key
-
-    @property
-    def readonly(self) -> bool:
-        return self._readonly
-
-    def __setitem__(
-        self,
-        position,
-        value,
-
-    ) -> None:
-
-        # mimick ``numpy`` error
-        if self._readonly:
-            raise ValueError('assignment destination is read-only')
-
-        return super().__setitem__(position, value)
-
-    def __getitem__(
-        self,
-        indexish,
-    ) -> list:
-
-        # NOTE: this is a non-writeable view (copy?) of the buffer
-        # in a new list instance.
-        if isinstance(indexish, slice):
-            return list(self)[indexish]
-
-        return super().__getitem__(indexish)
-
-    # TODO: should we offer a `.array` and `.push()` equivalent
-    # to the `ShmArray`?
-    # currently we have the following limitations:
-    # - can't write slices of input using traditional slice-assign
-    #   syntax due to the ``ShareableList.__setitem__()`` implementation.
-    # - ``list(shmlist)`` returns a non-mutable copy instead of
-    #   a writeable view which would be handier numpy-style ops.
-
-
-def open_shm_list(
-    key: str,
-    sequence: list | None = None,
-    size: int = int(2 ** 10),
-    dtype: float | int | bool | str | bytes | None = float,
-    readonly: bool = True,
-
-) -> ShmList:
-
-    if sequence is None:
-        default = {
-            float: 0.,
-            int: 0,
-            bool: True,
-            str: 'doggy',
-            None: None,
-        }[dtype]
-        sequence = [default] * size
-
-    shml = ShmList(
-        sequence=sequence,
-        name=key,
-        readonly=readonly,
-    )
-
-    # "close" attached shm on actor teardown
-    try:
-        actor = tractor.current_actor()
-        actor.lifetime_stack.callback(shml.shm.close)
-        actor.lifetime_stack.callback(shml.shm.unlink)
-    except RuntimeError:
-        log.warning('tractor runtime not active, skipping teardown steps')
-
-    return shml
-
-
-def attach_shm_list(
-    key: str,
-    readonly: bool = False,
-
-) -> ShmList:
-
-    return ShmList(
-        name=key,
-        readonly=readonly,
-    )

tractor/ipc/_tcp.py

@@ -1,212 +0,0 @@
-# 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/>.
-'''
-TCP implementation of tractor.ipc._transport.MsgTransport protocol 
-
-'''
-from __future__ import annotations
-from typing import (
-    ClassVar,
-)
-# from contextlib import (
-#     asynccontextmanager as acm,
-# )
-
-import msgspec
-import trio
-from trio import (
-    SocketListener,
-    open_tcp_listeners,
-)
-
-from tractor.msg import MsgCodec
-from tractor.log import get_logger
-from tractor.ipc._transport import (
-    MsgTransport,
-    MsgpackTransport,
-)
-
-
-log = get_logger(__name__)
-
-
-class TCPAddress(
-    msgspec.Struct,
-    frozen=True,
-):
-    _host: str
-    _port: int
-
-    proto_key: ClassVar[str] = 'tcp'
-    unwrapped_type: ClassVar[type] = tuple[str, int]
-    def_bindspace: ClassVar[str] = '127.0.0.1'
-
-    @property
-    def is_valid(self) -> bool:
-        return self._port != 0
-
-    @property
-    def bindspace(self) -> str:
-        return self._host
-
-    @property
-    def domain(self) -> str:
-        return self._host
-
-    @classmethod
-    def from_addr(
-        cls,
-        addr: tuple[str, int]
-    ) -> TCPAddress:
-        match addr:
-            case (str(), int()):
-                return TCPAddress(addr[0], addr[1])
-            case _:
-                raise ValueError(
-                    f'Invalid unwrapped address for {cls}\n'
-                    f'{addr}\n'
-                )
-
-    def unwrap(self) -> tuple[str, int]:
-        return (
-            self._host,
-            self._port,
-        )
-
-    @classmethod
-    def get_random(
-        cls,
-        bindspace: str = def_bindspace,
-    ) -> TCPAddress:
-        return TCPAddress(bindspace, 0)
-
-    @classmethod
-    def get_root(cls) -> TCPAddress:
-        return TCPAddress(
-            '127.0.0.1',
-            1616,
-        )
-
-    def __repr__(self) -> str:
-        return (
-            f'{type(self).__name__}[{self.unwrap()}]'
-        )
-
-    @classmethod
-    def get_transport(
-        cls,
-        codec: str = 'msgpack',
-    ) -> MsgTransport:
-        match codec:
-            case 'msgspack':
-                return MsgpackTCPStream
-            case _:
-                raise ValueError(
-                    f'No IPC transport with {codec!r} supported !'
-                )
-
-
-async def start_listener(
-    addr: TCPAddress,
-    **kwargs,
-) -> SocketListener:
-    '''
-    Start a TCP socket listener on the given `TCPAddress`.
-
-    '''
-    # ?TODO, maybe we should just change the lower-level call this is
-    # using internall per-listener?
-    listeners: list[SocketListener] = await open_tcp_listeners(
-        host=addr._host,
-        port=addr._port,
-        **kwargs
-    )
-    # NOTE, for now we don't expect non-singleton-resolving
-    # domain-addresses/multi-homed-hosts.
-    # (though it is supported by `open_tcp_listeners()`)
-    assert len(listeners) == 1
-    listener = listeners[0]
-    host, port = listener.socket.getsockname()[:2]
-    return listener
-
-
-# TODO: typing oddity.. not sure why we have to inherit here, but it
-# seems to be an issue with `get_msg_transport()` returning
-# a `Type[Protocol]`; probably should make a `mypy` issue?
-class MsgpackTCPStream(MsgpackTransport):
-    '''
-    A ``trio.SocketStream`` delivering ``msgpack`` formatted data
-    using the ``msgspec`` codec lib.
-
-    '''
-    address_type = TCPAddress
-    layer_key: int = 4
-
-    @property
-    def maddr(self) -> str:
-        host, port = self.raddr.unwrap()
-        return (
-            # TODO, use `ipaddress` from stdlib to handle
-            # first detecting which of `ipv4/6` before
-            # choosing the routing prefix part.
-            f'/ipv4/{host}'
-
-            f'/{self.address_type.proto_key}/{port}'
-            # f'/{self.chan.uid[0]}'
-            # f'/{self.cid}'
-
-            # f'/cid={cid_head}..{cid_tail}'
-            # TODO: ? not use this ^ right ?
-        )
-
-    def connected(self) -> bool:
-        return self.stream.socket.fileno() != -1
-
-    @classmethod
-    async def connect_to(
-        cls,
-        destaddr: TCPAddress,
-        prefix_size: int = 4,
-        codec: MsgCodec|None = None,
-        **kwargs
-    ) -> MsgpackTCPStream:
-        stream = await trio.open_tcp_stream(
-            *destaddr.unwrap(),
-            **kwargs
-        )
-        return MsgpackTCPStream(
-            stream,
-            prefix_size=prefix_size,
-            codec=codec
-        )
-
-    @classmethod
-    def get_stream_addrs(
-        cls,
-        stream: trio.SocketStream
-    ) -> tuple[
-        TCPAddress,
-        TCPAddress,
-    ]:
-        # TODO, what types are these?
-        lsockname = stream.socket.getsockname()
-        l_sockaddr: tuple[str, int] = tuple(lsockname[:2])
-        rsockname = stream.socket.getpeername()
-        r_sockaddr: tuple[str, int] = tuple(rsockname[:2])
-        return (
-            TCPAddress.from_addr(l_sockaddr),
-            TCPAddress.from_addr(r_sockaddr),
-        )

tractor/ipc/_transport.py

@@ -1,514 +0,0 @@
-# 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/>.
-'''
-typing.Protocol based generic msg API, implement this class to add
-backends for tractor.ipc.Channel
-
-'''
-from __future__ import annotations
-from typing import (
-    runtime_checkable,
-    Type,
-    Protocol,
-    # TypeVar,
-    ClassVar,
-    TYPE_CHECKING,
-)
-from collections.abc import (
-    AsyncGenerator,
-    AsyncIterator,
-)
-import struct
-
-import trio
-import msgspec
-from tricycle import BufferedReceiveStream
-
-from tractor.log import get_logger
-from tractor._exceptions import (
-    MsgTypeError,
-    TransportClosed,
-    _mk_send_mte,
-    _mk_recv_mte,
-)
-from tractor.msg import (
-    _ctxvar_MsgCodec,
-    # _codec,  XXX see `self._codec` sanity/debug checks
-    MsgCodec,
-    MsgType,
-    types as msgtypes,
-    pretty_struct,
-)
-
-if TYPE_CHECKING:
-    from tractor._addr import Address
-
-log = get_logger(__name__)
-
-
-# (codec, transport)
-MsgTransportKey = tuple[str, str]
-
-
-# from tractor.msg.types import MsgType
-# ?TODO? this should be our `Union[*msgtypes.__spec__]` alias now right..?
-# => BLEH, except can't bc prots must inherit typevar or param-spec
-#   vars..
-# MsgType = TypeVar('MsgType')
-
-
-@runtime_checkable
-class MsgTransport(Protocol):
-#
-# class MsgTransport(Protocol[MsgType]):
-# ^-TODO-^ consider using a generic def and indexing with our
-# eventual msg definition/types?
-# - https://docs.python.org/3/library/typing.html#typing.Protocol
-
-    stream: trio.abc.Stream
-    drained: list[MsgType]
-
-    address_type: ClassVar[Type[Address]]
-    codec_key: ClassVar[str]
-
-    # XXX: should this instead be called `.sendall()`?
-    async def send(self, msg: MsgType) -> None:
-        ...
-
-    async def recv(self) -> MsgType:
-        ...
-
-    def __aiter__(self) -> MsgType:
-        ...
-
-    def connected(self) -> bool:
-        ...
-
-    # defining this sync otherwise it causes a mypy error because it
-    # can't figure out it's a generator i guess?..?
-    def drain(self) -> AsyncIterator[dict]:
-        ...
-
-    @classmethod
-    def key(cls) -> MsgTransportKey:
-        return (
-            cls.codec_key,
-            cls.address_type.proto_key,
-        )
-
-    @property
-    def laddr(self) -> Address:
-        ...
-
-    @property
-    def raddr(self) -> Address:
-        ...
-
-    @property
-    def maddr(self) -> str:
-        ...
-
-    @classmethod
-    async def connect_to(
-        cls,
-        addr: Address,
-        **kwargs
-    ) -> MsgTransport:
-        ...
-
-    @classmethod
-    def get_stream_addrs(
-        cls,
-        stream: trio.abc.Stream
-    ) -> tuple[
-        Address,  # local
-        Address   # remote
-    ]:
-        '''
-        Return the transport protocol's address pair for the local
-        and remote-peer side.
-
-        '''
-        ...
-
-    # TODO, such that all `.raddr`s for each `SocketStream` are
-    # delivered?
-    # -[ ] move `.open_listener()` here and internally track the
-    #     listener set, per address?
-    # def get_peers(
-    #     self,
-    # ) -> list[Address]:
-    #     ...
-
-
-
-class MsgpackTransport(MsgTransport):
-
-    # TODO: better naming for this?
-    # -[ ] check how libp2p does naming for such things?
-    codec_key: str = 'msgpack'
-
-    def __init__(
-        self,
-        stream: trio.abc.Stream,
-        prefix_size: int = 4,
-
-        # XXX optionally provided codec pair for `msgspec`:
-        # https://jcristharif.com/msgspec/extending.html#mapping-to-from-native-types
-        #
-        # TODO: define this as a `Codec` struct which can be
-        # overriden dynamically by the application/runtime?
-        codec: MsgCodec = None,
-
-    ) -> None:
-        self.stream = stream
-        (
-            self._laddr,
-            self._raddr,
-        ) = self.get_stream_addrs(stream)
-
-        # create read loop instance
-        self._aiter_pkts = self._iter_packets()
-        self._send_lock = trio.StrictFIFOLock()
-
-        # public i guess?
-        self.drained: list[dict] = []
-
-        self.recv_stream = BufferedReceiveStream(
-            transport_stream=stream
-        )
-        self.prefix_size = prefix_size
-
-        # allow for custom IPC msg interchange format
-        # dynamic override Bo
-        self._task = trio.lowlevel.current_task()
-
-        # XXX for ctxvar debug only!
-        # self._codec: MsgCodec = (
-        #     codec
-        #     or
-        #     _codec._ctxvar_MsgCodec.get()
-        # )
-
-    async def _iter_packets(self) -> AsyncGenerator[dict, None]:
-        '''
-        Yield `bytes`-blob decoded packets from the underlying TCP
-        stream using the current task's `MsgCodec`.
-
-        This is a streaming routine implemented as an async generator
-        func (which was the original design, but could be changed?)
-        and is allocated by a `.__call__()` inside `.__init__()` where
-        it is assigned to the `._aiter_pkts` attr.
-
-        '''
-        decodes_failed: int = 0
-
-        tpt_name: str = f'{type(self).__name__!r}'
-        while True:
-            try:
-                header: bytes = await self.recv_stream.receive_exactly(4)
-            except (
-                ValueError,
-                ConnectionResetError,
-
-                # not sure entirely why we need this but without it we
-                # seem to be getting racy failures here on
-                # arbiter/registry name subs..
-                trio.BrokenResourceError,
-
-            ) as trans_err:
-
-                loglevel = 'transport'
-                match trans_err:
-                    # case (
-                    #     ConnectionResetError()
-                    # ):
-                    #     loglevel = 'transport'
-
-                    # peer actor (graceful??) TCP EOF but `tricycle`
-                    # seems to raise a 0-bytes-read?
-                    case ValueError() if (
-                        'unclean EOF' in trans_err.args[0]
-                    ):
-                        pass
-
-                    # peer actor (task) prolly shutdown quickly due
-                    # to cancellation
-                    case trio.BrokenResourceError() if (
-                        'Connection reset by peer' in trans_err.args[0]
-                    ):
-                        pass
-
-                    # unless the disconnect condition falls under "a
-                    # normal operation breakage" we usualy console warn
-                    # about it.
-                    case _:
-                        loglevel: str = 'warning'
-
-
-                raise TransportClosed(
-                    message=(
-                        f'{tpt_name} already closed by peer\n'
-                    ),
-                    src_exc=trans_err,
-                    loglevel=loglevel,
-                ) from trans_err
-
-            # XXX definitely can happen if transport is closed
-            # manually by another `trio.lowlevel.Task` in the
-            # same actor; we use this in some simulated fault
-            # testing for ex, but generally should never happen
-            # under normal operation!
-            #
-            # NOTE: as such we always re-raise this error from the
-            #       RPC msg loop!
-            except trio.ClosedResourceError as cre:
-                closure_err = cre
-
-                raise TransportClosed(
-                    message=(
-                        f'{tpt_name} was already closed locally ?\n'
-                    ),
-                    src_exc=closure_err,
-                    loglevel='error',
-                    raise_on_report=(
-                        'another task closed this fd' in closure_err.args
-                    ),
-                ) from closure_err
-
-            # graceful TCP EOF disconnect
-            if header == b'':
-                raise TransportClosed(
-                    message=(
-                        f'{tpt_name} already gracefully closed\n'
-                    ),
-                    loglevel='transport',
-                )
-
-            size: int
-            size, = struct.unpack("<I", header)
-
-            log.transport(f'received header {size}')  # type: ignore
-            msg_bytes: bytes = await self.recv_stream.receive_exactly(size)
-
-            log.transport(f"received {msg_bytes}")  # type: ignore
-            try:
-                # NOTE: lookup the `trio.Task.context`'s var for
-                # the current `MsgCodec`.
-                codec: MsgCodec = _ctxvar_MsgCodec.get()
-
-                # XXX for ctxvar debug only!
-                # if self._codec.pld_spec != codec.pld_spec:
-                #     assert (
-                #         task := trio.lowlevel.current_task()
-                #     ) is not self._task
-                #     self._task = task
-                #     self._codec = codec
-                #     log.runtime(
-                #         f'Using new codec in {self}.recv()\n'
-                #         f'codec: {self._codec}\n\n'
-                #         f'msg_bytes: {msg_bytes}\n'
-                #     )
-                yield codec.decode(msg_bytes)
-
-            # XXX NOTE: since the below error derives from
-            # `DecodeError` we need to catch is specially
-            # and always raise such that spec violations
-            # are never allowed to be caught silently!
-            except msgspec.ValidationError as verr:
-                msgtyperr: MsgTypeError = _mk_recv_mte(
-                    msg=msg_bytes,
-                    codec=codec,
-                    src_validation_error=verr,
-                )
-                # XXX deliver up to `Channel.recv()` where
-                # a re-raise and `Error`-pack can inject the far
-                # end actor `.uid`.
-                yield msgtyperr
-
-            except (
-                msgspec.DecodeError,
-                UnicodeDecodeError,
-            ):
-                if decodes_failed < 4:
-                    # ignore decoding errors for now and assume they have to
-                    # do with a channel drop - hope that receiving from the
-                    # channel will raise an expected error and bubble up.
-                    try:
-                        msg_str: str|bytes = msg_bytes.decode()
-                    except UnicodeDecodeError:
-                        msg_str = msg_bytes
-
-                    log.exception(
-                        'Failed to decode msg?\n'
-                        f'{codec}\n\n'
-                        'Rxed bytes from wire:\n\n'
-                        f'{msg_str!r}\n'
-                    )
-                    decodes_failed += 1
-                else:
-                    raise
-
-    async def send(
-        self,
-        msg: msgtypes.MsgType,
-
-        strict_types: bool = True,
-        hide_tb: bool = True,
-
-    ) -> None:
-        '''
-        Send a msgpack encoded py-object-blob-as-msg over TCP.
-
-        If `strict_types == True` then a `MsgTypeError` will be raised on any
-        invalid msg type
-
-        '''
-        __tracebackhide__: bool = hide_tb
-
-        # XXX see `trio._sync.AsyncContextManagerMixin` for details
-        # on the `.acquire()`/`.release()` sequencing..
-        async with self._send_lock:
-
-            # NOTE: lookup the `trio.Task.context`'s var for
-            # the current `MsgCodec`.
-            codec: MsgCodec = _ctxvar_MsgCodec.get()
-
-            # XXX for ctxvar debug only!
-            # if self._codec.pld_spec != codec.pld_spec:
-            #     self._codec = codec
-            #     log.runtime(
-            #         f'Using new codec in {self}.send()\n'
-            #         f'codec: {self._codec}\n\n'
-            #         f'msg: {msg}\n'
-            #     )
-
-            if type(msg) not in msgtypes.__msg_types__:
-                if strict_types:
-                    raise _mk_send_mte(
-                        msg,
-                        codec=codec,
-                    )
-                else:
-                    log.warning(
-                        'Sending non-`Msg`-spec msg?\n\n'
-                        f'{msg}\n'
-                    )
-
-            try:
-                bytes_data: bytes = codec.encode(msg)
-            except TypeError as _err:
-                typerr = _err
-                msgtyperr: MsgTypeError = _mk_send_mte(
-                    msg,
-                    codec=codec,
-                    message=(
-                        f'IPC-msg-spec violation in\n\n'
-                        f'{pretty_struct.Struct.pformat(msg)}'
-                    ),
-                    src_type_error=typerr,
-                )
-                raise msgtyperr from typerr
-
-            # supposedly the fastest says,
-            # https://stackoverflow.com/a/54027962
-            size: bytes = struct.pack("<I", len(bytes_data))
-            try:
-                return await self.stream.send_all(size + bytes_data)
-            except (
-                trio.BrokenResourceError,
-            ) as bre:
-                trans_err = bre
-                tpt_name: str = f'{type(self).__name__!r}'
-                match trans_err:
-                    case trio.BrokenResourceError() if (
-                        '[Errno 32] Broken pipe' in trans_err.args[0]
-                        # ^XXX, specifc to UDS transport and its,
-                        # well, "speediness".. XD
-                        # |_ likely todo with races related to how fast
-                        #    the socket is setup/torn-down on linux
-                        #    as it pertains to rando pings from the
-                        #    `.discovery` subsys and protos.
-                    ):
-                        raise 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',
-                        ) from bre
-
-                    # unless the disconnect condition falls under "a
-                    # normal operation breakage" we usualy console warn
-                    # about it.
-                    case _:
-                        log.exception(
-                            '{tpt_name} layer failed pre-send ??\n'
-                        )
-                        raise trans_err
-
-        # ?TODO? does it help ever to dynamically show this
-        # frame?
-        # try:
-        #     <the-above_code>
-        # except BaseException as _err:
-        #     err = _err
-        #     if not isinstance(err, MsgTypeError):
-        #         __tracebackhide__: bool = False
-        #     raise
-
-    async def recv(self) -> msgtypes.MsgType:
-        return await self._aiter_pkts.asend(None)
-
-    async def drain(self) -> AsyncIterator[dict]:
-        '''
-        Drain the stream's remaining messages sent from
-        the far end until the connection is closed by
-        the peer.
-
-        '''
-        try:
-            async for msg in self._iter_packets():
-                self.drained.append(msg)
-        except TransportClosed:
-            for msg in self.drained:
-                yield msg
-
-    def __aiter__(self):
-        return self._aiter_pkts
-
-    @property
-    def laddr(self) -> Address:
-        return self._laddr
-
-    @property
-    def raddr(self) -> Address:
-        return self._raddr
-
-    def pformat(self) -> str:
-        return (
-            f'<{type(self).__name__}(\n'
-            f' |_peers: 2\n'
-            f'   laddr: {self._laddr}\n'
-            f'   raddr: {self._raddr}\n'
-            # f'\n'
-            f' |_task: {self._task}\n'
-            f')>\n'
-        )
-
-    __repr__ = __str__ = pformat

tractor/ipc/_types.py

@@ -1,123 +0,0 @@
-# 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/>.
-
-'''
-IPC subsys type-lookup helpers?
-
-'''
-from typing import (
-    Type,
-    # TYPE_CHECKING,
-)
-
-import trio
-import socket
-
-from tractor.ipc._transport import (
-    MsgTransportKey,
-    MsgTransport
-)
-from tractor.ipc._tcp import (
-    TCPAddress,
-    MsgpackTCPStream,
-)
-from tractor.ipc._uds import (
-    UDSAddress,
-    MsgpackUDSStream,
-)
-
-# if TYPE_CHECKING:
-#     from tractor._addr import Address
-
-
-Address = TCPAddress|UDSAddress
-
-# manually updated list of all supported msg transport types
-_msg_transports = [
-    MsgpackTCPStream,
-    MsgpackUDSStream
-]
-
-
-# convert a MsgTransportKey to the corresponding transport type
-_key_to_transport: dict[
-    MsgTransportKey,
-    Type[MsgTransport],
-] = {
-    ('msgpack', 'tcp'): MsgpackTCPStream,
-    ('msgpack', 'uds'): MsgpackUDSStream,
-}
-
-# convert an Address wrapper to its corresponding transport type
-_addr_to_transport: dict[
-    Type[TCPAddress|UDSAddress],
-    Type[MsgTransport]
-] = {
-    TCPAddress: MsgpackTCPStream,
-    UDSAddress: MsgpackUDSStream,
-}
-
-
-def transport_from_addr(
-    addr: Address,
-    codec_key: str = 'msgpack',
-) -> Type[MsgTransport]:
-    '''
-    Given a destination address and a desired codec, find the
-    corresponding `MsgTransport` type.
-
-    '''
-    try:
-        return _addr_to_transport[type(addr)]
-
-    except KeyError:
-        raise NotImplementedError(
-            f'No known transport for address {repr(addr)}'
-        )
-
-
-def transport_from_stream(
-    stream: trio.abc.Stream,
-    codec_key: str = 'msgpack'
-) -> Type[MsgTransport]:
-    '''
-    Given an arbitrary `trio.abc.Stream` and a desired codec,
-    find the corresponding `MsgTransport` type.
-
-    '''
-    transport = None
-    if isinstance(stream, trio.SocketStream):
-        sock: socket.socket = stream.socket
-        match sock.family:
-            case socket.AF_INET | socket.AF_INET6:
-                transport = 'tcp'
-
-            case socket.AF_UNIX:
-                transport = 'uds'
-
-            case _:
-                raise NotImplementedError(
-                    f'Unsupported socket family: {sock.family}'
-                )
-
-    if not transport:
-        raise NotImplementedError(
-            f'Could not figure out transport type for stream type {type(stream)}'
-        )
-
-    key = (codec_key, transport)
-
-    return _key_to_transport[key]

tractor/ipc/_uds.py

@@ -1,422 +0,0 @@
-# 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/>.
-'''
-Unix Domain Socket implementation of tractor.ipc._transport.MsgTransport protocol 
-
-'''
-from __future__ import annotations
-from pathlib import Path
-import os
-from socket import (
-    AF_UNIX,
-    SOCK_STREAM,
-    SO_PASSCRED,
-    SO_PEERCRED,
-    SOL_SOCKET,
-)
-import struct
-from typing import (
-    TYPE_CHECKING,
-    ClassVar,
-)
-
-import msgspec
-import trio
-from trio import (
-    socket,
-    SocketListener,
-)
-from trio._highlevel_open_unix_stream import (
-    close_on_error,
-    has_unix,
-)
-
-from tractor.msg import MsgCodec
-from tractor.log import get_logger
-from tractor.ipc._transport import (
-    MsgpackTransport,
-)
-from .._state import (
-    get_rt_dir,
-    current_actor,
-    is_root_process,
-)
-
-if TYPE_CHECKING:
-    from ._runtime import Actor
-
-
-log = get_logger(__name__)
-
-
-def unwrap_sockpath(
-    sockpath: Path,
-) -> tuple[Path, Path]:
-    return (
-        sockpath.parent,
-        sockpath.name,
-    )
-
-
-class UDSAddress(
-    msgspec.Struct,
-    frozen=True,
-):
-    filedir: str|Path|None
-    filename: str|Path
-    maybe_pid: int|None = None
-
-    # TODO, maybe we should use better field and value
-    # -[x] really this is a `.protocol_key` not a "name" of anything.
-    # -[ ] consider a 'unix' proto-key instead?
-    # -[ ] need to check what other mult-transport frameworks do
-    #     like zmq, nng, uri-spec et al!
-    proto_key: ClassVar[str] = 'uds'
-    unwrapped_type: ClassVar[type] = tuple[str, int]
-    def_bindspace: ClassVar[Path] = get_rt_dir()
-
-    @property
-    def bindspace(self) -> Path:
-        '''
-        We replicate the "ip-set-of-hosts" part of a UDS socket as
-        just the sub-directory in which we allocate socket files.
-
-        '''
-        return (
-            self.filedir
-            or
-            self.def_bindspace
-            # or
-            # get_rt_dir()
-        )
-
-    @property
-    def sockpath(self) -> Path:
-        return self.bindspace / self.filename
-
-    @property
-    def is_valid(self) -> bool:
-        '''
-        We block socket files not allocated under the runtime subdir.
-
-        '''
-        return self.bindspace in self.sockpath.parents
-
-    @classmethod
-    def from_addr(
-        cls,
-        addr: (
-            tuple[Path|str, Path|str]|Path|str
-        ),
-    ) -> UDSAddress:
-        match addr:
-            case tuple()|list():
-                filedir = Path(addr[0])
-                filename = Path(addr[1])
-                return UDSAddress(
-                    filedir=filedir,
-                    filename=filename,
-                    # maybe_pid=pid,
-                )
-            # NOTE, in case we ever decide to just `.unwrap()`
-            # to a `Path|str`?
-            case str()|Path():
-                sockpath: Path = Path(addr)
-                return UDSAddress(*unwrap_sockpath(sockpath))
-            case _:
-                # import pdbp; pdbp.set_trace()
-                raise TypeError(
-                    f'Bad unwrapped-address for {cls} !\n'
-                    f'{addr!r}\n'
-                )
-
-    def unwrap(self) -> tuple[str, int]:
-        # XXX NOTE, since this gets passed DIRECTLY to
-        # `.ipc._uds.open_unix_socket_w_passcred()`
-        return (
-            str(self.filedir),
-            str(self.filename),
-        )
-
-    @classmethod
-    def get_random(
-        cls,
-        bindspace: Path|None = None,  # default netns
-    ) -> UDSAddress:
-
-        filedir: Path = bindspace or cls.def_bindspace
-        pid: int = os.getpid()
-        actor: Actor|None = current_actor(
-            err_on_no_runtime=False,
-        )
-        if actor:
-            sockname: str = '::'.join(actor.uid) + f'@{pid}'
-        else:
-            prefix: str = '<unknown-actor>'
-            if is_root_process():
-                prefix: str = 'root'
-            sockname: str = f'{prefix}@{pid}'
-
-        sockpath: Path = Path(f'{sockname}.sock')
-        return UDSAddress(
-            filedir=filedir,
-            filename=sockpath,
-            maybe_pid=pid,
-        )
-
-    @classmethod
-    def get_root(cls) -> UDSAddress:
-        def_uds_filename: Path = 'registry@1616.sock'
-        return UDSAddress(
-            filedir=cls.def_bindspace,
-            filename=def_uds_filename,
-            # maybe_pid=1616,
-        )
-
-    # ?TODO, maybe we should just our .msg.pretty_struct.Struct` for
-    # this instead?
-    # -[ ] is it too "multi-line"y tho?
-    #      the compact tuple/.unwrapped() form is simple enough?
-    #
-    def __repr__(self) -> str:
-        if not (pid := self.maybe_pid):
-            pid: str = '<unknown-peer-pid>'
-
-        body: str = (
-            f'({self.filedir}, {self.filename}, {pid})'
-        )
-        return (
-            f'{type(self).__name__}'
-            f'['
-            f'{body}'
-            f']'
-        )
-
-
-async def start_listener(
-    addr: UDSAddress,
-    **kwargs,
-) -> SocketListener:
-    # sock = addr._sock = socket.socket(
-    sock = socket.socket(
-        socket.AF_UNIX,
-        socket.SOCK_STREAM
-    )
-    log.info(
-        f'Attempting to bind UDS socket\n'
-        f'>[\n'
-        f'|_{addr}\n'
-    )
-
-    bindpath: Path = addr.sockpath
-    try:
-        await sock.bind(str(bindpath))
-    except (
-        FileNotFoundError,
-    ) as fdne:
-        raise ConnectionError(
-            f'Bad UDS socket-filepath-as-address ??\n'
-            f'{addr}\n'
-            f' |_sockpath: {addr.sockpath}\n'
-        ) from fdne
-
-    sock.listen(1)
-    log.info(
-        f'Listening on UDS socket\n'
-        f'[>\n'
-        f' |_{addr}\n'
-    )
-    return SocketListener(sock)
-
-
-def close_listener(
-    addr: UDSAddress,
-    lstnr: SocketListener,
-) -> None:
-    '''
-    Close and remove the listening unix socket's path.
-
-    '''
-    lstnr.socket.close()
-    os.unlink(addr.sockpath)
-
-
-async def open_unix_socket_w_passcred(
-    filename: str|bytes|os.PathLike[str]|os.PathLike[bytes],
-) -> trio.SocketStream:
-    '''
-    Literally the exact same as `trio.open_unix_socket()` except we set the additiona
-    `socket.SO_PASSCRED` option to ensure the server side (the process calling `accept()`)
-    can extract the connecting peer's credentials, namely OS specific process
-    related IDs.
-
-    See this SO for "why" the extra opts,
-    - https://stackoverflow.com/a/7982749
-
-    '''
-    if not has_unix:
-        raise RuntimeError("Unix sockets are not supported on this platform")
-
-    # much more simplified logic vs tcp sockets - one socket type and only one
-    # possible location to connect to
-    sock = trio.socket.socket(AF_UNIX, SOCK_STREAM)
-    sock.setsockopt(SOL_SOCKET, SO_PASSCRED, 1)
-    with close_on_error(sock):
-        await sock.connect(os.fspath(filename))
-
-    return trio.SocketStream(sock)
-
-
-def get_peer_info(sock: trio.socket.socket) -> tuple[
-    int,  # pid
-    int,  # uid
-    int,  # guid
-]:
-    '''
-    Deliver the connecting peer's "credentials"-info as defined in
-    a very Linux specific way..
-
-    For more deats see,
-    - `man accept`,
-    - `man unix`,
-
-    this great online guide to all things sockets,
-    - https://beej.us/guide/bgnet/html/split-wide/man-pages.html#setsockoptman
-
-    AND this **wonderful SO answer**
-    - https://stackoverflow.com/a/7982749
-
-    '''
-    creds: bytes = sock.getsockopt(
-        SOL_SOCKET,
-        SO_PEERCRED,
-        struct.calcsize('3i')
-    )
-    # i.e a tuple of the fields,
-    # pid: int, "process"
-    # uid: int, "user"
-    # gid: int, "group"
-    return struct.unpack('3i', creds)
-
-
-class MsgpackUDSStream(MsgpackTransport):
-    '''
-    A `trio.SocketStream` around a Unix-Domain-Socket transport
-    delivering `msgpack` encoded msgs using the `msgspec` codec lib.
-
-    '''
-    address_type = UDSAddress
-    layer_key: int = 4
-
-    @property
-    def maddr(self) -> str:
-        if not self.raddr:
-            return '<unknown-peer>'
-
-        filepath: Path = Path(self.raddr.unwrap()[0])
-        return (
-            f'/{self.address_type.proto_key}/{filepath}'
-            # f'/{self.chan.uid[0]}'
-            # f'/{self.cid}'
-
-            # f'/cid={cid_head}..{cid_tail}'
-            # TODO: ? not use this ^ right ?
-        )
-
-    def connected(self) -> bool:
-        return self.stream.socket.fileno() != -1
-
-    @classmethod
-    async def connect_to(
-        cls,
-        addr: UDSAddress,
-        prefix_size: int = 4,
-        codec: MsgCodec|None = None,
-        **kwargs
-    ) -> MsgpackUDSStream:
-
-
-        sockpath: Path = addr.sockpath
-        #
-        # ^XXX NOTE, we don't provide any out-of-band `.pid` info
-        # (like, over the socket as extra msgs) since the (augmented)
-        # `.setsockopt()` call tells the OS provide it; the client
-        # pid can then be read on server/listen() side via
-        # `get_peer_info()` above.
-        try:
-            stream = await open_unix_socket_w_passcred(
-                str(sockpath),
-                **kwargs
-            )
-        except (
-            FileNotFoundError,
-        ) as fdne:
-            raise ConnectionError(
-                f'Bad UDS socket-filepath-as-address ??\n'
-                f'{addr}\n'
-                f' |_sockpath: {sockpath}\n'
-            ) from fdne
-
-        stream = MsgpackUDSStream(
-            stream,
-            prefix_size=prefix_size,
-            codec=codec
-        )
-        stream._raddr = addr
-        return stream
-
-    @classmethod
-    def get_stream_addrs(
-        cls,
-        stream: trio.SocketStream
-    ) -> tuple[
-        Path,
-        int,
-    ]:
-        sock: trio.socket.socket = stream.socket
-
-        # NOTE XXX, it's unclear why one or the other ends up being
-        # `bytes` versus the socket-file-path, i presume it's
-        # something to do with who is the server (called `.listen()`)?
-        # maybe could be better implemented using another info-query
-        # on the socket like,
-        # https://beej.us/guide/bgnet/html/split-wide/system-calls-or-bust.html#gethostnamewho-am-i
-        sockname: str|bytes = sock.getsockname()
-        # https://beej.us/guide/bgnet/html/split-wide/system-calls-or-bust.html#getpeernamewho-are-you
-        peername: str|bytes = sock.getpeername()
-        match (peername, sockname):
-            case (str(), bytes()):
-                sock_path: Path = Path(peername)
-            case (bytes(), str()):
-                sock_path: Path = Path(sockname)
-        (
-            peer_pid,
-            _,
-            _,
-        ) = get_peer_info(sock)
-
-        filedir, filename = unwrap_sockpath(sock_path)
-        laddr = UDSAddress(
-            filedir=filedir,
-            filename=filename,
-            maybe_pid=os.getpid(),
-        )
-        raddr = UDSAddress(
-            filedir=filedir,
-            filename=filename,
-            maybe_pid=peer_pid
-        )
-        return (laddr, raddr)

tractor/linux/__init__.py

@@ -1,15 +0,0 @@
-# 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/>.

tractor/linux/_fdshare.py

@@ -1,316 +0,0 @@
-# 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/>.
-'''
-Reimplementation of multiprocessing.reduction.sendfds & recvfds, using acms and trio.
-
-cpython impl:
-https://github.com/python/cpython/blob/275056a7fdcbe36aaac494b4183ae59943a338eb/Lib/multiprocessing/reduction.py#L138
-'''
-import os
-import array
-import tempfile
-from uuid import uuid4
-from pathlib import Path
-from typing import AsyncContextManager
-from contextlib import asynccontextmanager as acm
-
-import trio
-import tractor
-from trio import socket
-
-
-log = tractor.log.get_logger(__name__)
-
-
-class FDSharingError(Exception):
-    ...
-
-
-@acm
-async def send_fds(fds: list[int], sock_path: str) -> AsyncContextManager[None]:
-    '''
-    Async trio reimplementation of `multiprocessing.reduction.sendfds`
-
-    https://github.com/python/cpython/blob/275056a7fdcbe36aaac494b4183ae59943a338eb/Lib/multiprocessing/reduction.py#L142
-
-    It's implemented using an async context manager in order to simplyfy usage
-    with `tractor.context`s, we can open a context in a remote actor that uses
-    this acm inside of it, and uses `ctx.started()` to signal the original
-    caller actor to perform the `recv_fds` call.
-
-    See `tractor.ipc._ringbuf._ringd._attach_to_ring` for an example.
-    '''
-    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-    await sock.bind(sock_path)
-    sock.listen(1)
-
-    yield  # socket is setup, ready for receiver connect
-
-    # wait until receiver connects
-    conn, _ = await sock.accept()
-
-    # setup int array for fds
-    fds = array.array('i', fds)
-
-    # first byte of msg will be len of fds to send % 256, acting as a fd amount
-    # verification on `recv_fds` we refer to it as `check_byte`
-    msg = bytes([len(fds) % 256])
-
-    # send msg with custom SCM_RIGHTS type
-    await conn.sendmsg(
-        [msg],
-        [(socket.SOL_SOCKET, socket.SCM_RIGHTS, fds)]
-    )
-
-    # finally wait receiver ack
-    if await conn.recv(1) != b'A':
-        raise FDSharingError('did not receive acknowledgement of fd')
-
-    conn.close()
-    sock.close()
-    os.unlink(sock_path)
-
-
-async def recv_fds(sock_path: str, amount: int) -> tuple:
-    '''
-    Async trio reimplementation of `multiprocessing.reduction.recvfds`
-
-    https://github.com/python/cpython/blob/275056a7fdcbe36aaac494b4183ae59943a338eb/Lib/multiprocessing/reduction.py#L150
-
-    It's equivalent to std just using `trio.open_unix_socket` for connecting and
-    changes on error handling.
-
-    See `tractor.ipc._ringbuf._ringd._attach_to_ring` for an example.
-    '''
-    stream = await trio.open_unix_socket(sock_path)
-    sock = stream.socket
-
-    # prepare int array for fds
-    a = array.array('i')
-    bytes_size = a.itemsize * amount
-
-    # receive 1 byte + space necesary for SCM_RIGHTS msg for {amount} fds
-    msg, ancdata, flags, addr = await sock.recvmsg(
-        1, socket.CMSG_SPACE(bytes_size)
-    )
-
-    # maybe failed to receive msg?
-    if not msg and not ancdata:
-        raise FDSharingError(f'Expected to receive {amount} fds from {sock_path}, but got EOF')
-
-    # send ack, std comment mentions this ack pattern was to get around an
-    # old macosx bug, but they are not sure if its necesary any more, in
-    # any case its not a bad pattern to keep
-    await sock.send(b'A')  # Ack
-
-    # expect to receive only one `ancdata` item
-    if len(ancdata) != 1:
-        raise FDSharingError(
-            f'Expected to receive exactly one \"ancdata\" but got {len(ancdata)}: {ancdata}'
-        )
-
-    # unpack SCM_RIGHTS msg
-    cmsg_level, cmsg_type, cmsg_data = ancdata[0]
-
-    # check proper msg type
-    if cmsg_level != socket.SOL_SOCKET:
-        raise FDSharingError(
-            f'Expected CMSG level to be SOL_SOCKET({socket.SOL_SOCKET}) but got {cmsg_level}'
-        )
-
-    if cmsg_type != socket.SCM_RIGHTS:
-        raise FDSharingError(
-            f'Expected CMSG type to be SCM_RIGHTS({socket.SCM_RIGHTS}) but got {cmsg_type}'
-        )
-
-    # check proper data alignment
-    length = len(cmsg_data)
-    if length % a.itemsize != 0:
-        raise FDSharingError(
-            f'CMSG data alignment error: len of {length} is not divisible by int size {a.itemsize}'
-        )
-
-    # attempt to cast as int array
-    a.frombytes(cmsg_data)
-
-    # validate length check byte
-    valid_check_byte = amount % 256  # check byte acording to `recv_fds` caller
-    recvd_check_byte = msg[0]  # actual received check byte
-    payload_check_byte = len(a) % 256  # check byte acording to received fd int array
-
-    if recvd_check_byte != payload_check_byte:
-        raise FDSharingError(
-            'Validation failed: received check byte '
-            f'({recvd_check_byte}) does not match fd int array len % 256 ({payload_check_byte})'
-        )
-
-    if valid_check_byte != recvd_check_byte:
-        raise FDSharingError(
-            'Validation failed: received check byte '
-            f'({recvd_check_byte}) does not match expected fd amount % 256 ({valid_check_byte})'
-        )
-
-    return tuple(a)
-
-
-'''
-Share FD actor module
-
-Add "tractor.linux._fdshare" to enabled modules on actors to allow sharing of
-FDs with other actors.
-
-Use `share_fds` function to register a set of fds with a name, then other
-actors can use `request_fds_from` function to retrieve the fds.
-
-Use `unshare_fds` to disable sharing of  a set of FDs.
-
-'''
-
-FDType = tuple[int]
-
-_fds: dict[str, FDType] = {}
-
-
-def maybe_get_fds(name: str) -> FDType | None:
-    '''
-    Get registered FDs with a given name or return None
-
-    '''
-    return _fds.get(name, None)
-
-
-def get_fds(name: str) -> FDType:
-    '''
-    Get registered FDs with a given name or raise
-    '''
-    fds = maybe_get_fds(name)
-
-    if not fds:
-        raise RuntimeError(f'No FDs with name {name} found!')
-
-    return fds
-
-
-def share_fds(
-    name: str,
-    fds: tuple[int],
-) -> None:
-    '''
-    Register a set of fds to be shared under a given name.
-
-    '''
-    this_actor = tractor.current_actor()
-    if __name__ not in this_actor.enable_modules:
-        raise RuntimeError(
-            f'Tried to share FDs {fds} with name {name}, but '
-            f'module {__name__} is not enabled in actor {this_actor.name}!'
-        )
-
-    maybe_fds = maybe_get_fds(name)
-    if maybe_fds:
-        raise RuntimeError(f'share FDs: {maybe_fds} already tied to name {name}')
-
-    _fds[name] = fds
-
-
-def unshare_fds(name: str) -> None:
-    '''
-    Unregister a set of fds to disable sharing them.
-
-    '''
-    get_fds(name)  # raise if not exists
-
-    del _fds[name]
-
-
-@tractor.context
-async def _pass_fds(
-    ctx: tractor.Context,
-    name: str,
-    sock_path: str
-) -> None:
-    '''
-    Endpoint to request a set of FDs from current actor, will use `ctx.started`
-    to send original FDs, then `send_fds` will block until remote side finishes
-    the `recv_fds` call.
-
-    '''
-    # get fds or raise error
-    fds = get_fds(name)
-
-    # start fd passing context using socket on `sock_path`
-    async with send_fds(fds, sock_path):
-        # send original fds through ctx.started
-        await ctx.started(fds)
-
-
-async def request_fds_from(
-    actor_name: str,
-    fds_name: str
-) -> FDType:
-    '''
-    Use this function to retreive shared FDs from `actor_name`.
-
-    '''
-    this_actor = tractor.current_actor()
-
-    # create a temporary path for the UDS sock
-    sock_path = str(
-        Path(tempfile.gettempdir())
-        /
-        f'{fds_name}-from-{actor_name}-to-{this_actor.name}.sock'
-    )
-
-    # having a socket path length > 100 aprox can cause:
-    # OSError: AF_UNIX path too long
-    # https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_un.h.html#tag_13_67_04
-
-    # attempt sock path creation with smaller names
-    if len(sock_path) > 100:
-        sock_path = str(
-            Path(tempfile.gettempdir())
-            /
-            f'{fds_name}-to-{this_actor.name}.sock'
-        )
-
-        if len(sock_path) > 100:
-            # just use uuid4
-            sock_path = str(
-                Path(tempfile.gettempdir())
-                /
-                f'pass-fds-{uuid4()}.sock'
-            )
-
-    async with (
-        tractor.find_actor(actor_name) as portal,
-
-        portal.open_context(
-            _pass_fds,
-            name=fds_name,
-            sock_path=sock_path
-        ) as (ctx, fds_info),
-    ):
-        # get original FDs
-        og_fds = fds_info
-
-        # retrieve copies of FDs
-        fds = await recv_fds(sock_path, len(og_fds))
-
-        log.info(
-            f'{this_actor.name} received fds: {og_fds} -> {fds}'
-        )
-
-        return fds

tractor/linux/eventfd.py

@@ -1,213 +0,0 @@
-# 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/>.
-'''
-Expose libc eventfd APIs
-
-'''
-import os
-import errno
-
-import cffi
-import trio
-
-ffi = cffi.FFI()
-
-# Declare the C functions and types we plan to use.
-#    - eventfd: for creating the event file descriptor
-#    - write:   for writing to the file descriptor
-#    - read:    for reading from the file descriptor
-#    - close:   for closing the file descriptor
-ffi.cdef(
-    '''
-    int eventfd(unsigned int initval, int flags);
-
-    ssize_t write(int fd, const void *buf, size_t count);
-    ssize_t read(int fd, void *buf, size_t count);
-
-    int close(int fd);
-    '''
-)
-
-
-# Open the default dynamic library (essentially 'libc' in most cases)
-C = ffi.dlopen(None)
-
-
-# Constants from <sys/eventfd.h>, if needed.
-EFD_SEMAPHORE = 1
-EFD_CLOEXEC = 0o2000000
-EFD_NONBLOCK = 0o4000
-
-
-def open_eventfd(initval: int = 0, flags: int = 0) -> int:
-    '''
-    Open an eventfd with the given initial value and flags.
-    Returns the file descriptor on success, otherwise raises OSError.
-
-    '''
-    fd = C.eventfd(initval, flags)
-    if fd < 0:
-        raise OSError(errno.errorcode[ffi.errno], 'eventfd failed')
-    return fd
-
-
-def write_eventfd(fd: int, value: int) -> int:
-    '''
-    Write a 64-bit integer (uint64_t) to the eventfd's counter.
-
-    '''
-    # Create a uint64_t* in C, store `value`
-    data_ptr = ffi.new('uint64_t *', value)
-
-    # Call write(fd, data_ptr, 8)
-    # We expect to write exactly 8 bytes (sizeof(uint64_t))
-    ret = C.write(fd, data_ptr, 8)
-    if ret < 0:
-        raise OSError(errno.errorcode[ffi.errno], 'write to eventfd failed')
-    return ret
-
-
-def read_eventfd(fd: int) -> int:
-    '''
-    Read a 64-bit integer (uint64_t) from the eventfd, returning the value.
-    Reading resets the counter to 0 (unless using EFD_SEMAPHORE).
-
-    '''
-    # Allocate an 8-byte buffer in C for reading
-    buf = ffi.new('char[]', 8)
-
-    ret = C.read(fd, buf, 8)
-    if ret < 0:
-        raise OSError(errno.errorcode[ffi.errno], 'read from eventfd failed')
-    # Convert the 8 bytes we read into a Python integer
-    data_bytes = ffi.unpack(buf, 8)  # returns a Python bytes object of length 8
-    value = int.from_bytes(data_bytes, byteorder='little', signed=False)
-    return value
-
-
-def close_eventfd(fd: int) -> int:
-    '''
-    Close the eventfd.
-
-    '''
-    ret = C.close(fd)
-    if ret < 0:
-        raise OSError(errno.errorcode[ffi.errno], 'close failed')
-
-
-class EFDReadCancelled(Exception):
-    ...
-
-
-class EventFD:
-    '''
-    Use a previously opened eventfd(2), meant to be used in
-    sub-actors after root actor opens the eventfds then passes
-    them through pass_fds
-
-    '''
-
-    def __init__(
-        self,
-        fd: int,
-        omode: str
-    ):
-        self._fd: int = fd
-        self._omode: str = omode
-        self._fobj = None
-        self._cscope: trio.CancelScope | None = None
-        self._is_closed: bool = True
-        self._read_lock = trio.StrictFIFOLock()
-
-    @property
-    def closed(self) -> bool:
-        return self._is_closed
-
-    @property
-    def fd(self) -> int | None:
-        return self._fd
-
-    def write(self, value: int) -> int:
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        return write_eventfd(self._fd, value)
-
-    async def read(self) -> int:
-        '''
-        Async wrapper for `read_eventfd(self.fd)`
-
-        `trio.to_thread.run_sync` is used, need to use a `trio.CancelScope`
-        in order to make it cancellable when `self.close()` is called.
-
-        '''
-        if self.closed:
-            raise trio.ClosedResourceError
-
-        if self._read_lock.locked():
-            raise trio.BusyResourceError
-
-        async with self._read_lock:
-            self._cscope = trio.CancelScope()
-            with self._cscope:
-                try:
-                    return await trio.to_thread.run_sync(
-                        read_eventfd, self._fd,
-                        abandon_on_cancel=True
-                    )
-
-                except OSError as e:
-                    if e.errno != errno.EBADF:
-                        raise
-
-                    raise trio.BrokenResourceError
-
-            if self._cscope.cancelled_caught:
-                raise EFDReadCancelled
-
-            self._cscope = None
-
-    def read_nowait(self) -> int:
-        '''
-        Direct call to `read_eventfd(self.fd)`, unless `eventfd` was
-        opened with `EFD_NONBLOCK` its gonna block the thread.
-
-        '''
-        return read_eventfd(self._fd)
-
-    def open(self):
-        self._fobj = os.fdopen(self._fd, self._omode)
-        self._is_closed = False
-
-    def close(self):
-        if self._fobj:
-            try:
-                self._fobj.close()
-
-            except OSError:
-                ...
-
-        if self._cscope:
-            self._cscope.cancel()
-
-        self._is_closed = True
-
-    def __enter__(self):
-        self.open()
-        return self
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        self.close()

tractor/log.py

@@ -92,7 +92,7 @@ class StackLevelAdapter(LoggerAdapter):
     ) -> None:
         '''
         IPC transport level msg IO; generally anything below
-        `.ipc.Channel` and friends.
+        `._ipc.Channel` and friends.
 
         '''
         return self.log(5, msg)
@@ -285,7 +285,7 @@ def get_logger(
         # 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
+        #   in msg output: i.e. tractor.tractor _ipc.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

tractor/msg/_codec.py

@@ -39,11 +39,13 @@ from contextvars import (
 )
 import textwrap
 from typing import (
-    TYPE_CHECKING,
     Any,
-    Type,
-    Union,
     Callable,
+    Protocol,
+    Type,
+    TYPE_CHECKING,
+    TypeVar,
+    Union,
 )
 from types import ModuleType
 
@@ -52,13 +54,6 @@ from msgspec import (
     msgpack,
     Raw,
 )
-from msgspec.inspect import (
-    CustomType,
-    UnionType,
-    SetType,
-    ListType,
-    TupleType
-)
 # TODO: see notes below from @mikenerone..
 # from tricycle import TreeVar
 
@@ -86,7 +81,7 @@ class MsgDec(Struct):
 
     '''
     _dec: msgpack.Decoder
-    _ext_types_boxes: dict[Type, Struct] = {}
+    # _ext_types_box: Struct|None = None
 
     @property
     def dec(self) -> msgpack.Decoder:
@@ -231,8 +226,6 @@ def mk_dec(
             f'ext_types = {ext_types!r}\n'
         )
 
-    _boxed_structs: dict[Type, Struct] = {}
-
     if dec_hook:
         if ext_types is None:
             raise TypeError(
@@ -244,15 +237,17 @@ def mk_dec(
                 f'ext_types = {ext_types!r}\n'
             )
 
-        if len(ext_types) > 1:
-            _boxed_structs = mk_boxed_ext_structs(ext_types)
-            ext_types = [
-                etype
-                for etype in ext_types
-                if etype not in _boxed_structs
-            ]
-            ext_types += list(_boxed_structs.values())
-
+        # XXX, i *thought* we would require a boxing struct as per docs,
+        # https://jcristharif.com/msgspec/extending.html#mapping-to-from-native-types
+        # |_ see comment,
+        #  > Note that typed deserialization is required for
+        #  > successful roundtripping here, so we pass `MyMessage` to
+        #  > `Decoder`.
+        #
+        # BUT, turns out as long as you spec a union with `Raw` it
+        # will work? kk B)
+        #
+        # maybe_box_struct = mk_boxed_ext_struct(ext_types)
         spec = Raw | Union[*ext_types]
 
     return MsgDec(
@@ -260,26 +255,29 @@ def mk_dec(
             type=spec,  # like `MsgType[Any]`
             dec_hook=dec_hook,
         ),
-        _ext_types_boxes=_boxed_structs
     )
 
 
-def mk_boxed_ext_structs(
+# TODO? remove since didn't end up needing this?
+def mk_boxed_ext_struct(
     ext_types: list[Type],
-) -> dict[Type, Struct]:
-    box_types: dict[Type, Struct] = {}
-    for ext_type in ext_types:
-        info = msgspec.inspect.type_info(ext_type)
-        if isinstance(info, CustomType):
-            box_types[ext_type] = msgspec.defstruct(
-                f'Box{ext_type.__name__}',
-                tag=True,
-                fields=[
-                    ('inner', ext_type),
-                ],
-            )
-
-    return box_types
+) -> Struct:
+    # NOTE, originally was to wrap non-msgpack-supported "extension
+    # types" in a field-typed boxing struct, see notes around the
+    # `dec_hook()` branch in `mk_dec()`.
+    ext_types_union = Union[*ext_types]
+    repr_ext_types_union: str = (
+        str(ext_types_union)
+        or
+        "|".join(ext_types)
+    )
+    BoxedExtType = msgspec.defstruct(
+        f'BoxedExts[{repr_ext_types_union}]',
+        fields=[
+            ('boxed', ext_types_union),
+        ],
+    )
+    return BoxedExtType
 
 
 def unpack_spec_types(
@@ -380,7 +378,7 @@ class MsgCodec(Struct):
     _dec: msgpack.Decoder
     _pld_spec: Type[Struct]|Raw|Any
 
-    _ext_types_boxes: dict[Type, Struct] = {}
+    # _ext_types_box: Struct|None = None
 
     def __repr__(self) -> str:
         speclines: str = textwrap.indent(
@@ -467,29 +465,45 @@ class MsgCodec(Struct):
 
         '''
         __tracebackhide__: bool = hide_tb
+        if use_buf:
+            self._enc.encode_into(py_obj, self._buf)
+            return self._buf
 
-        try:
+        return self._enc.encode(py_obj)
+        # try:
+        #     return self._enc.encode(py_obj)
+        # except TypeError as typerr:
+        #     typerr.add_note(
+        #         '|_src error from `msgspec`'
+        #         # f'|_{self._enc.encode!r}'
+        #     )
+        #     raise typerr
 
-            box: Struct|None = self._ext_types_boxes.get(type(py_obj), None)
-            if (
-                as_ext_type
-                or
-                box
-            ):
-                py_obj = box(inner=py_obj)
-
-            if use_buf:
-                self._enc.encode_into(py_obj, self._buf)
-                return self._buf
-
-            return self._enc.encode(py_obj)
-
-        except TypeError as typerr:
-            typerr.add_note(
-                '|_src error from `msgspec`'
-                # f'|_{self._enc.encode!r}'
-            )
-            raise typerr
+        # TODO! REMOVE once i'm confident we won't ever need it!
+        #
+        # box: Struct = self._ext_types_box
+        # if (
+        #     as_ext_type
+        #     or
+        #     (
+        #         # XXX NOTE, auto-detect if the input type
+        #         box
+        #         and
+        #         (ext_types := unpack_spec_types(
+        #             spec=box.__annotations__['boxed'])
+        #         )
+        #     )
+        # ):
+        #     match py_obj:
+        #         # case PayloadMsg(pld=pld) if (
+        #         #     type(pld) in ext_types
+        #         # ):
+        #         #     py_obj.pld = box(boxed=py_obj)
+        #         #     breakpoint()
+        #         case _ if (
+        #             type(py_obj) in ext_types
+        #         ):
+        #             py_obj = box(boxed=py_obj)
 
     @property
     def dec(self) -> msgpack.Decoder:
@@ -551,6 +565,11 @@ def mk_codec(
     enc_hook: Callable|None = None,
     ext_types: list[Type]|None = None,
 
+    # optionally provided msg-decoder from which we pull its,
+    # |_.dec_hook()
+    # |_.type
+    ext_dec: MsgDec|None = None
+    #
     # ?TODO? other params we might want to support
     # Encoder:
     # write_buffer_size=write_buffer_size,
@@ -578,6 +597,12 @@ def mk_codec(
             )
 
     dec_hook: Callable|None = None
+    if ext_dec:
+        dec: msgspec.Decoder = ext_dec.dec
+        dec_hook = dec.dec_hook
+        pld_spec |= dec.type
+        if ext_types:
+            pld_spec |= Union[*ext_types]
 
     # (manually) generate a msg-spec (how appropes) for all relevant
     # payload-boxing-struct-msg-types, parameterizing the
@@ -605,16 +630,10 @@ def mk_codec(
     enc = msgpack.Encoder(
        enc_hook=enc_hook,
     )
-
-    boxes = {}
-    if ext_types and len(ext_types) > 1:
-        boxes = mk_boxed_ext_structs(ext_types)
-
     codec = MsgCodec(
         _enc=enc,
         _dec=dec,
         _pld_spec=pld_spec,
-        _ext_types_boxes=boxes
     )
     # sanity on expected backend support
     assert codec.lib.__name__ == libname
@@ -790,298 +809,78 @@ def limit_msg_spec(
     assert curr_codec is current_codec()
 
 
-'''
-Encoder / Decoder generic hook factory
+# XXX: msgspec won't allow this with non-struct custom types
+# like `NamespacePath`!@!
+# @cm
+# def extend_msg_spec(
+#     payload_spec: Union[Type[Struct]],
 
-'''
+# ) -> MsgCodec:
+#     '''
+#     Extend the current `MsgCodec.pld_spec` (type set) by extending
+#     the payload spec to **include** the types specified by
+#     `payload_spec`.
+
+#     '''
+#     codec: MsgCodec = current_codec()
+#     pld_spec: Union[Type] = codec.pld_spec
+#     extended_spec: Union[Type] = pld_spec|payload_spec
+
+#     with limit_msg_spec(payload_types=extended_spec) as ext_codec:
+#         # import pdbp; pdbp.set_trace()
+#         assert ext_codec.pld_spec == extended_spec
+#         yield ext_codec
+#
+# ^-TODO-^ is it impossible to make something like this orr!?
+
+# TODO: make an auto-custom hook generator from a set of input custom
+# types?
+# -[ ] below is a proto design using a `TypeCodec` idea?
+#
+# type var for the expected interchange-lib's
+# IPC-transport type when not available as a built-in
+# serialization output.
+WireT = TypeVar('WireT')
 
 
-# builtins we can have in same pld_spec as custom types
-default_builtins = (
-    None,
-    bool,
-    int,
-    float,
-    bytes,
-    list
-)
-
-
-# spec definition type
-TypeSpec = (
-    Type |
-    Union[Type] |
-    list[Type] |
-    tuple[Type] |
-    set[Type]
-)
-
-
-class TypeCodec:
+# TODO: some kinda (decorator) API for built-in subtypes
+# that builds this implicitly by inspecting the `mro()`?
+class TypeCodec(Protocol):
     '''
-    This class describes a way of encoding to or decoding from a "wire type",
-    objects that have `encode_fn` and `decode_fn` can be used with
-    `.encode/.decode`.
+    A per-custom-type wire-transport serialization translator
+    description type.
 
     '''
+    src_type: Type
+    wire_type: WireT
 
-    def __init__(
-        self,
-        wire_type: Type,
-        decode_fn: str,
-        encode_fn: str = 'encode',
-    ):
-        self._encode_fn: str = encode_fn
-        self._decode_fn: str = decode_fn
-        self._wire_type: Type = wire_type
+    def encode(obj: Type) -> WireT:
+        ...
 
-    def __repr__(self) -> str:
-        return (
-            f'{type(self).__name__}('
-            f'{self._encode_fn}, '
-            f'{self._decode_fn}) '
-            f'-> {self._wire_type}'
-        )
-
-    @property
-    def encode_fn(self) -> str:
-        return self._encode_fn
-
-    @property
-    def decode_fn(self) -> str:
-        return self._decode_fn
-
-    @property
-    def wire_type(self) -> str:
-        return self._wire_type
-
-    def is_type_compat(self, obj: any) -> bool:
-        return (
-            hasattr(obj, self._encode_fn)
-            and
-            hasattr(obj, self._decode_fn)
-        )
-
-    def encode(self, obj: any) -> any:
-        return getattr(obj, self._encode_fn)()
-
-    def decode(self, cls: Type, raw: any) -> any:
-        return getattr(cls, self._decode_fn)(raw)
+    def decode(
+        obj_type: Type[WireT],
+        obj: WireT,
+    ) -> Type:
+        ...
 
 
-'''
-Default codec descriptions for wire types:
-
-    - bytes
-    - str
-    - int
-
-'''
+class MsgpackTypeCodec(TypeCodec):
+    ...
 
 
-BytesCodec = TypeCodec(
-    decode_fn='from_bytes',
-    wire_type=bytes
-)
+def mk_codec_hooks(
+    type_codecs: list[TypeCodec],
 
-
-StrCodec = TypeCodec(
-    decode_fn='from_str',
-    wire_type=str
-)
-
-
-IntCodec = TypeCodec(
-    decode_fn='from_int',
-    wire_type=int
-)
-
-
-default_codecs: dict[Type, TypeCodec] = {
-    bytes: BytesCodec,
-    str: StrCodec,
-    int: IntCodec
-}
-
-
-def mk_spec_set(
-    spec: TypeSpec
-) -> set[Type]:
+) -> tuple[Callable, Callable]:
     '''
-    Given any of the different spec definitions, always return a `set[Type]`
-    with each spec type as an item.
-
-    - When passed list|tuple|set do nothing
-    - When passed a single type we wrap it in tuple
-    - When passed a Union we wrap its inner types in tuple
+    Deliver a `enc_hook()`/`dec_hook()` pair which handle
+    manual convertion from an input `Type` set such that whenever
+    the `TypeCodec.filter()` predicate matches the
+    `TypeCodec.decode()` is called on the input native object by
+    the `dec_hook()` and whenever the
+    `isiinstance(obj, TypeCodec.type)` matches against an
+    `enc_hook(obj=obj)` the return value is taken from a
+    `TypeCodec.encode(obj)` callback.
 
     '''
-    if not (
-        isinstance(spec, set)
-        or
-        isinstance(spec, list)
-        or
-        isinstance(spec, tuple)
-    ):
-        spec_info = msgspec.inspect.type_info(spec)
-        match spec_info:
-            case UnionType():
-                return set((
-                    t.cls
-                    for t in spec_info.types
-                ))
-
-            case _:
-                return set((spec, ))
-
-    return set(spec)
-
-
-def mk_codec_map_from_spec(
-    spec: TypeSpec,
-    codecs: dict[Type, TypeCodec] = default_codecs
-) -> dict[Type, TypeCodec]:
-    '''
-    Generate a map of spec type -> supported codec
-
-    '''
-    spec: set[Type] = mk_spec_set(spec)
-
-    spec_codecs: dict[Type, TypeCodec] = {}
-    for t in spec:
-        if t in spec_codecs:
-            continue
-
-        for codec_type in (int, bytes, str):
-            codec = codecs[codec_type]
-            if codec.is_type_compat(t):
-                spec_codecs[t] = codec
-                break
-
-    return spec_codecs
-
-
-def mk_enc_hook(
-    spec: TypeSpec,
-    with_builtins: bool = True,
-    builtins: set[Type] = default_builtins,
-    codecs: dict[Type, TypeCodec] = default_codecs
-) -> Callable:
-    '''
-    Given a type specification return a msgspec enc_hook fn
-
-    '''
-    spec_codecs = mk_codec_map_from_spec(spec)
-
-    def enc_hook(obj: any) -> any:
-        try:
-            t = type(obj)
-            maybe_codec = spec_codecs.get(t, None)
-            if maybe_codec:
-                return maybe_codec.encode(obj)
-
-            # passthrough builtins
-            if builtins and t in builtins:
-                return obj
-
-            raise NotImplementedError(
-                f"Objects of type {type(obj)} are not supported:\n{obj}"
-            )
-
-        except* Exception as e:
-            e.add_note(f'enc_hook: {t}, {type(obj)} {obj}')
-            raise
-
-    return enc_hook
-
-
-def mk_dec_hook(
-    spec: TypeSpec,
-    with_builtins: bool = True,
-    builtins: set[Type] = default_builtins,
-    codecs: dict[Type, TypeCodec] = default_codecs
-) -> Callable:
-    '''
-    Given a type specification return a msgspec dec_hook fn
-
-    '''
-    spec_codecs = mk_codec_map_from_spec(spec)
-
-    def dec_hook(t: Type, obj: any) -> any:
-        try:
-            if t is type(obj):
-                return obj
-
-            maybe_codec = spec_codecs.get(t, None)
-            if maybe_codec:
-                return maybe_codec.decode(t, obj)
-
-            # passthrough builtins
-            if builtins and type(obj) in builtins:
-                return obj
-
-            raise NotImplementedError(
-                f"Objects of type {type} are not supported from {obj}"
-            )
-
-        except* Exception as e:
-            e.add_note(f'dec_hook: {t}, {type(obj)} {obj}')
-            raise
-
-    return dec_hook
-
-
-def mk_codec_hooks(*args, **kwargs) -> tuple[Callable, Callable]:
-    '''
-    Given a type specification return a msgspec enc & dec hook fn pair
-
-    '''
-    return (
-        mk_enc_hook(*args, **kwargs),
-
-        mk_dec_hook(*args, **kwargs)
-    )
-
-
-def mk_codec_from_spec(
-    spec: TypeSpec,
-    with_builtins: bool = True,
-    builtins: set[Type] = default_builtins,
-    codecs: dict[Type, TypeCodec] = default_codecs
-) -> MsgCodec:
-    '''
-    Given a type specification return a MsgCodec
-
-    '''
-    spec: set[Type] = mk_spec_set(spec)
-
-    return mk_codec(
-        enc_hook=mk_enc_hook(
-            spec,
-            with_builtins=with_builtins,
-            builtins=builtins,
-            codecs=codecs
-        ),
-        ext_types=spec
-    )
-
-
-def mk_msgpack_codec(
-    spec: TypeSpec,
-    with_builtins: bool = True,
-    builtins: set[Type] = default_builtins,
-    codecs: dict[Type, TypeCodec] = default_codecs
-) -> tuple[msgpack.Encoder, msgpack.Decoder]:
-    '''
-    Get a msgpack Encoder, Decoder pair for a given type spec
-
-    '''
-    enc_hook, dec_hook = mk_codec_hooks(
-        spec,
-        with_builtins=with_builtins,
-        builtins=builtins,
-        codecs=codecs
-    )
-    encoder = msgpack.Encoder(enc_hook=enc_hook)
-    decoder = msgpack.Decoder(spec, dec_hook=dec_hook)
-    return encoder, decoder
+    ...

tractor/msg/types.py

@@ -31,7 +31,6 @@ from typing import (
     Type,
     TypeVar,
     TypeAlias,
-    # TYPE_CHECKING,
     Union,
 )
 
@@ -48,7 +47,6 @@ from tractor.msg import (
     pretty_struct,
 )
 from tractor.log import get_logger
-# from tractor._addr import UnwrappedAddress
 
 
 log = get_logger('tractor.msgspec')
@@ -143,16 +141,9 @@ class Aid(
     '''
     name: str
     uuid: str
-    pid: int|None = None
-
-    # TODO? can/should we extend this field set?
-    # -[ ] use built-in support for UUIDs? `uuid.UUID` which has
-    #     multi-protocol support
-    #     https://jcristharif.com/msgspec/supported-types.html#uuid
-    #
-    # -[ ] as per the `.ipc._uds` / `._addr` comments, maybe we
-    #     should also include at least `.pid` (equiv to port for tcp)
-    #     and/or host-part always?
+    # TODO: use built-in support for UUIDs?
+    # -[ ] `uuid.UUID` which has multi-protocol support
+    #  https://jcristharif.com/msgspec/supported-types.html#uuid
 
 
 class SpawnSpec(
@@ -176,8 +167,8 @@ class SpawnSpec(
 
     # TODO: not just sockaddr pairs?
     # -[ ] abstract into a `TransportAddr` type?
-    reg_addrs: list[tuple[str, str|int]]
-    bind_addrs: list[tuple[str, str|int]]|None
+    reg_addrs: list[tuple[str, int]]
+    bind_addrs: list[tuple[str, int]]
 
 
 # TODO: caps based RPC support in the payload?

tractor/trionics/__init__.py

@@ -32,8 +32,3 @@ from ._broadcast import (
 from ._beg import (
     collapse_eg as collapse_eg,
 )
-
-from ._ordering import (
-    order_send_channel as order_send_channel,
-    order_receive_channel as order_receive_channel
-)

tractor/trionics/_ordering.py

@@ -1,108 +0,0 @@
-# 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/>.
-'''
-Helpers to guarantee ordering of messages through a unordered channel
-
-'''
-from __future__ import annotations
-from heapq import (
-    heappush,
-    heappop
-)
-
-import trio
-import msgspec
-
-
-class OrderedPayload(msgspec.Struct, frozen=True):
-    index: int
-    payload: bytes
-
-    @classmethod
-    def from_msg(cls, msg: bytes) -> OrderedPayload:
-        return msgspec.msgpack.decode(msg, type=OrderedPayload)
-
-    def encode(self) -> bytes:
-        return msgspec.msgpack.encode(self)
-
-
-def order_send_channel(
-    channel: trio.abc.SendChannel[bytes],
-    start_index: int = 0
-):
-
-    next_index = start_index
-    send_lock = trio.StrictFIFOLock()
-
-    channel._send = channel.send
-    channel._aclose = channel.aclose
-
-    async def send(msg: bytes):
-        nonlocal next_index
-        async with send_lock:
-            await channel._send(
-                OrderedPayload(
-                    index=next_index,
-                    payload=msg
-                ).encode()
-            )
-            next_index += 1
-
-    async def aclose():
-        async with send_lock:
-            await channel._aclose()
-
-    channel.send = send
-    channel.aclose = aclose
-
-
-def order_receive_channel(
-    channel: trio.abc.ReceiveChannel[bytes],
-    start_index: int = 0
-):
-    next_index = start_index
-    pqueue = []
-
-    channel._receive = channel.receive
-
-    def can_pop_next() -> bool:
-        return (
-            len(pqueue) > 0
-            and
-            pqueue[0][0] == next_index
-        )
-
-    async def drain_to_heap():
-        while not can_pop_next():
-            msg = await channel._receive()
-            msg = OrderedPayload.from_msg(msg)
-            heappush(pqueue, (msg.index, msg.payload))
-
-    def pop_next():
-        nonlocal next_index
-        _, msg = heappop(pqueue)
-        next_index += 1
-        return msg
-
-    async def receive() -> bytes:
-        if can_pop_next():
-            return pop_next()
-
-        await drain_to_heap()
-
-        return pop_next()
-
-    channel.receive = receive

uv.lock

@@ -2,31 +2,13 @@ version = 1
 revision = 1
 requires-python = ">=3.11"
 
-[[package]]
-name = "async-generator"
-version = "1.10"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/ce/b6/6fa6b3b598a03cba5e80f829e0dadbb49d7645f523d209b2fb7ea0bbb02a/async_generator-1.10.tar.gz", hash = "sha256:6ebb3d106c12920aaae42ccb6f787ef5eefdcdd166ea3d628fa8476abe712144", size = 29870 }
-wheels = [
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-]
-
 [[package]]
 name = "attrs"
-version = "25.3.0"
+version = "24.3.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/5a/b0/1367933a8532ee6ff8d63537de4f1177af4bff9f3e829baf7331f595bb24/attrs-25.3.0.tar.gz", hash = "sha256:75d7cefc7fb576747b2c81b4442d4d4a1ce0900973527c011d1030fd3bf4af1b", size = 812032 }
+sdist = { url = "https://files.pythonhosted.org/packages/48/c8/6260f8ccc11f0917360fc0da435c5c9c7504e3db174d5a12a1494887b045/attrs-24.3.0.tar.gz", hash = "sha256:8f5c07333d543103541ba7be0e2ce16eeee8130cb0b3f9238ab904ce1e85baff", size = 805984 }
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-[[package]]
-name = "bidict"
-version = "0.23.1"
-source = { registry = "https://pypi.org/simple" }
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-wheels = [
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+    { url = "https://files.pythonhosted.org/packages/89/aa/ab0f7891a01eeb2d2e338ae8fecbe57fcebea1a24dbb64d45801bfab481d/attrs-24.3.0-py3-none-any.whl", hash = "sha256:ac96cd038792094f438ad1f6ff80837353805ac950cd2aa0e0625ef19850c308", size = 63397 },
 ]
 
 [[package]]
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