- drop the (never/un)used `.get_chans()`.
- add #TODO for factoring many methods into a new `.rpc`-subsys/pkg
primitive, like an `RPCMngr/Server` type eventually.
- add todo to maybe mv `.get_parent()` elsewhere?
- move masked `._hard_mofo_kill()` to bottom.
Namely inside various bootup-sequences in `._root` and `._runtime`
particularly in the root actor to support both better tpt-address
denoting in our logging and as part of clarifying logic around setting
the root's registry addresses which is soon to be much better factored
out of the core and into an explicit subsystem + API.
Some `_root.open_root_actor()` deats,
- set `registry_addrs` to a new `uw_reg_addrs` (uw: unwrapped) to be
more explicit about wrapped addr types thoughout.
- instead ensure `registry_addrs` are the wrapped types and pass down
into the root `Actor` singleton-instance.
- factor the root-actor check + rt-vars update (updating the `'_root_addrs'`)
out of `._runtime.async_main()` into this fn.
- as previous, set `trans_bind_addrs = uw_reg_addrs` in unwrapped form since it will
be passed down both through rt-vars as `'_root_addrs'` and to
`._runtim.async_main()` as `accept_addrs` (which is then passed to the
IPC server).
- adjust/simplify much logging.
- shield the `await actor.cancel(None) # self cancel` to avoid any
finally-footguns.
- as mentioned convert the
For `_runtime.async_main()` tweaks,
- expect `registry_addrs: list[Address]|None = None` with appropriate
unwrapping prior to setting both `.reg_addrs` and the equiv rt-var.
- add a new `.registry_addrs` prop for the wrapped form.
- convert a final loose-eg for the `service_nursery` to use
`collapse_eg()`.
- simplify teardown report logging.
Mostly just multi-line code styling again: always putting standalone
`'f\n'` on separate LOC so it reads like it renders to console. Oh and
and a level drop to `.runtime()` for rx-msg reports.
Again using `Channel.aid.reprol()`, `.devx.pformat.nest_from_op()` and
converting to multi-line code style an ' for str-report-contents. Tweak
some imports to sub-mod level as well.
Again for nicer console logging. Also fix a double `req_chan` arg bug
when passed to `_invoke` in the `self.cancel()` rt-ep; don't update the
`kwargs: dict` just merge in `req_chan` input at call time.
Including a new one-line `_shutdown_msg: str` which we mod-var-set for
testing usage and some denoising at `.info()` level. Adjust `Actor()`
instantiating input to the new `.registry_addrs` wrapped addrs property.
Mostly adjusting indentation, noise level, and clarity via `.pformat()`
tweaks more general use of `.devx.pformat.nest_from_op()`.
Specific impl deats,
- use `pformat.ppfmt()/`nest_from_op()` more seriously throughout
`._server`.
- add a `._server.Endpoint.pformat()`.
- add `._server.Server.len_peers()` and `.repr_state()`.
- polish `Server.pformat()`.
- drop some redundant `log.runtime()`s from `._serve_ipc_eps()` instead
leaving-them-only/putting-them in the caller pub meth.
- `._tcp.start_listener()` log the bound addr, not the input (which may
be the 0-port.
- only generate a repr in `.from_addr()` when log level is >= 'runtime'.
|_ add a todo about supporting this optimization more generally on our
adapter.
- fix `Channel.pformat()` to show unknown peer field line fmt correctly.
- add a `Channel.maddr: str` which just delegates directly to the
`._transport` like other pass-thru property fields.
To start trying out,
- using in the `Start`-msg handler-block to repr the msg coming
*from* a `repr(Channel)` using '<=)` sclang op.
- for a completed RPC task in `_invoke_non_context()`.
- for the msg loop task's termination report.
Such as the `MsgTransport.stream` and `.drain` attrs since they're
rarely that important at the chan level. Also start adopting
a `.<attr>=` style for actual attrs of the type versus a `<name>:
` style for meta-field info lines.
To simplify `.pformat()` output when the new `privates: bool` is unset
(the default) this adds new public attrs to wrap an actor's
cancellation status as well as provide a `.repr_state: str` (similar to
our equiv on `Context`). Rework `.pformat()` to render a much simplified
repr using all these new refinements.
Further, port the `.cancel()` method to use `.msg.types.Aid` for all
internal `requesting_uid` refs (now renamed with `_aid`) and in all
called downstream methods.
New cancel-state iface deats,
- rename `._cancel_called_by_remote` -> `._cancel_called_by` and expect
it to be set as an `Aid`.
- add `.cancel_complete: bool` which flags whether `.cancel()` ran to
completion.
- add `.cancel_called: bool` which just wraps `._cancel_called` (and
which likely will just be dropped since we already have
`._cancel_called_by`).
- add `.cancel_caller: Aid|None` which wraps `._cancel_called_by`.
In terms of using `Aid` in cancel methods,
- rename vars with `_aid` suffix in `.cancel()` (and wherever else).
- change `.cancel_rpc_tasks()` input param to `req_aid: msgtypes.Aid`.
- do the same for `._cancel_task()` and (for now until we adjust its
internals as well) use the `Aid.uid` remap property when assigning
`Context._canceller`.
- adjust all log msg refs to match obvi.
Providing the legacy `.uid -> tuple` style id (since still used for the
`Actor._contexts` table) and a `repr-one-line` method `.reprol() -> str`
for rendering a compact unique actor ID summary (useful in
logging/.pformat()s at the least).
Since it's for beg filtering, the current impl should be renamed anyway;
it's not just for filtering cancelled excs.
Deats,
- added a real doc string, links to official eg docs and fixed the
return typing.
- adjust all internal imports to match.
To resolve the recently added and failing
`test_remote_exc_relay::test_unmasked_remote_exc`: never allow
`trio.Cancelled` to mask an underlying user-code exception, ever.
Our first real-world (runtime internal) use case for the new
`.trionics.maybe_raise_from_masking_exc()` such that the failing
test now passes with an properly relayed remote RTE unmasking B)
Details,
- flip the `Context._scope_nursery` to the default strict-eg behaviour
and instead stack its outer scope with a `.trionics.collapse_eg()`.
- wrap the inner-most scope (after `msgops.maybe_limit_plds()`) with
a `maybe_raise_from_masking_exc()` to ensure user-code errors are
never masked by `trio.Cancelled`s.
Some err-reporting refinement,
- always capture any `scope_err` from the entire block for debug
purposes; report it in the `finally` block's log.
- always capture any suppressed `maybe_re`, output from
`ctx.maybe_raise()`, and `log.cancel()` report it.
To handle captured non-egs (when the now optional `tn` isn't provided)
as well as yield up a `BoxedMaybeException` which contains any detected
and un-masked `exc_ctx` as its `.value`.
Also add some additional tooling,
- a `raise_unmasked: bool` toggle for when the caller just wants to
report the masked exc and not raise-it-in-place of the masker.
- `extra_note: str` which by default is tuned to the default
`unmask_from = (trio.Cancelled,)` but which can be used to deliver
custom exception msg content.
- `always_warn_on: tuple[BaseException]` which will always emit
a warning log of what would have been the raised-in-place-of
`ctx_exc`'s msg for special cases where you want to report
a masking case that might not be otherwise noticed by the runtime
(cough like a `Cancelled` masking another `Cancelled) but which
you'd still like to warn the caller about.
- factor out the masked-`ext_ctx` predicate logic into
a `find_masked_excs()` and also use it for non-eg cases.
Still maybe todo?
- rewrapping multiple masked sub-excs in an eg back into an eg? left in
#TODOs and a pause-point where applicable.
Turns out there were some subtle internal bugs discovered by the just
added `tests/devx/test_tooling::test_crash_handler_cms` suite.
So this fixes,
- a mis-ordering around `rt_repl_fixture :=` in the logic of
`DebugStatus.maybe_enter_repl_fixture()`.
- `.devx.debug._post_mortem._post_mortem()` ensuring we now **always**
call `DebugStatus.release()`, and thus unwind the exist-stack managing
the `repl_fixture` exit/teardown, **even in the case** where
`yield False` is delivered from the user-fixture-fn (meaning
`dnter_repl=False`) thus triggering an early `return` (as is done in
the new test suite).
Opting for performance over broad multi-actor "debug-ability" from
sync-function-contexts when `debug_mode=True` is set;
IOW prefer no behind-the-scenes `greenlet` perf impact over being
able to use an actor-safe `breakpoint()` wherever as per,
https://greenback.readthedocs.io/en/latest/principle.html#performance
Adjust the breakpoint restore ex script to match.
Dropping the `_maybe_open_repl_fixture()` approach and instead using
a `DebugStatus._fixture_stack = ExitStack()` which provides for much
simpler support around both sync and async pausing APIs thanks to only
invoking `repl_fixture.__exit__()` on actual `PdbREPL` interaction being
complete!
Deats,
- all `repl_fixture` detection logic still happens in one place (the new
method) but we aren't limited to closing it via an immediate post REPL
`.__exit__()` call which instead is triggered by,
- `DebugStatus.release()` which now calls `._fixture_stack.close()` and
thus only invokes `repl_fixture.__exit__()` when user REPL-ing is
**actually complete** an arbitrary amount of debugging time later.
- include the notes for `@acm` support above the new method, though not
sure if they're as relevant any more?
Benefits,
- we can drop the previously added indent levels from
`_enter_repl_sync()` and `_post_mortem()`.
- now we automatically have support for the `.pause_from_sync()` API
since `_enter_repl_sync()` doesn't close the prior
`_maybe_open_repl_fixture()` immediately when `debug_func=None`; the
user's `__exit__()` is only ever called once `.release()` is.
Other,
- add big 'CASE' comments around the various blocks in
`.pause_from_sync()`, i was having trouble figuring out which i was
using from a `breakpoint()` in a dependent app..
Which cleans out the pkg-mod to just the expected exports with (its
longstanding todo comment list) and thus a separation-of-concerns
and smaller mod-file sizes via the following new sub-mods:
- `._trace` for the `.pause()`/`breakpoint()`/`pdb.set_trace()`-style
APIs including all sync-caller variants.
- `._post_mortem` to contain our async `.post_mortem()` and all other
public crash handling APIs for use from sync callers.
- `._sync` for the high-level syncing helper-routines used throughout the
runtime to avoid multi-proc TTY use collisions.
And also,
- remove `hide_runtime_frames()` since moved to `.devx._frame_stack`.
Orig commit was,
"9c0de24 Be explicit with `SpawnSpec` processing in subs"
The commit was picked onto an upstream branch but at that time there was
no `.devx.debug` subpkg yet, hence this revert to the original patch's
module path.
From what was originall the `.devx._debug` monolith module, since that
file was way out of ctl in terms of LoC!
New modules so far include,
- ._repl: our `pdb[p]` ext type/lowlevel-APIs and `mk_pdb()` factory.
- ._sigint: just our REPL-interaction shield-handler.
- ._tty_lock: containing all the root-actor TTY mutex machinery
including the `Lock`/`DebugStatus` primitives/APIs as well as the
inter-tree IPC context eps:
* the server-side `lock_stdio_for_peer()` which pairs with the,
* client-(subactor)-side `request_root_stdio_lock()` via the,
* pld-msg-spec of `LockStatus/LockRelease`.
AND the `any_connected_locker_child()` predicate.
Factoring the (basically duplicate) content from both use spots into
a common `@cm` which delivers a `bool` signalling whether the REPL
should be engaged. Fixes a lingering bug with `nullcontext()` calling
btw..
By supporting a new optional param to `open_crash_handler()`,
`raise_on_exit: bool|Sequence[Type[BaseException]] = True` which
determines whether, after the REPL interaction completes, the handled
exception is raised upward. This is **very** handy for writing bits of
"debug-able but resilient code" as is the case in (many) dependent
projects/apps.
Impl,
- `raise_on_exit` can be a `bool` or (set) sequence of types which will
always be raised.
- also add a `BoxedMaybeException.raise_on_exit` equiv which (for now)
we check matches (in case down the road we want to offer dynamic ctls).
- rename both crash-handler cm's `tb_hide` -> `hide_tb`.
It turns out to be fairly useful to allow hooking into a given actor's
entry-and-exit around `.devx._debug._pause/._post_mortem()` calls which
engage the `pdbp.Pdb` REPL (really our `._debug.PdbREPL` but yeah).
Some very handy use cases include,
- swapping out-of-band (config) state that may otherwise halt the
user's app since the actor normally handles kb&mouse input, in thread,
which means that the handler will be blocked while the REPL is in use.
- (remotely) reporting actor-runtime state for monitoring purposes
around crashes or pauses in normal operation.
- allowing for crash-handling to be hard-disabled via
`._state._runtime_vars` say for when you never want a debugger to be
entered in a production instance where you're not-sure-if/don't-want
per-actor `debug_mode: bool` settings to always be unset, say bc
you're still debugging some edge cases that ow you'd normally want to
REPL up.
Impl details,
- add a new optional `._state._runtime_vars['repl_fixture']` field which
for now can be manually set; i saw no reason for a formal API yet
since we want to convert the `dict` to a struct anyway (first).
- augment both `.devx._debug._pause()/._post_mortem()` with a new
optional `repl_fixture: AbstractContextManager[bool]` kwarg which
when provided is `with repl_fixture()` opened around the lowlevel
REPL interaction calls; if the enter-result, an expected `bool`, is
`False` then the interaction is hard-bypassed.
* for the `._pause()` case the `@cm` is opened around the entire body
of the embedded `_enter_repl_sync()` closure (for now) though
ideally longer term this entire routine is factored to be a lot less
"nested" Bp
* in `_post_mortem()` the entire previous body is wrapped similarly
and also now excepts an optional `boxed_maybe_exc: BoxedMaybeException`
only passed in the `open_crash_handler()` caller case.
- when the new runtime-var is overridden, (only manually atm) it is used
instead but only whenever the above `repl_fixture` kwarg is left null.
- add a `BoxedMaybeException.pformat() = __repr__()` which when
a `.value: Exception` is set renders a more "objecty" repr of the exc.
Obviously tests for all this should be coming soon!
Discovered this bug while testing `modden`'s daemon under various
cancelled-while-booting race conditions where sequential tests would
fail a lingering `assert 0` inside `.to_asyncio.run_as_asyncio_guest()`
to (oddly) catch redundant greenback-re-inits..
XD
Needs a test likely ;P
Tyler Goodlet