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tractor
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Break `_mk_msg_type_err()` into recv/send side funcs 

Name them `_mk_send_mte()`/`_mk_recv_mte()` and change the runtime to
call each appropriately depending on location/usage.

Also add some dynamic call-frame "unhide" blocks such that when we
expect raised MTE from the aboves calls but we get a different
unexpected error from the runtime, we ensure the call stack downward is
shown in tbs/pdb.
|_ ideally in the longer run we come up with a fancier dynamic sys for
   this, prolly something in `.devx._frame_stack`?
runtime_to_msgspec
Tyler Goodlet 2024-06-17 13:12:16 -04:00
parent 8477919fc9
commit 711f639fc5
4 changed files with 174 additions and 162 deletions
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16
tractor/_context.py
View File

@ -49,7 +49,6 @@ from typing import (
Any,
AsyncGenerator,
Callable,
Mapping,
Type,
TypeAlias,
TYPE_CHECKING,
@ -1484,6 +1483,8 @@ class Context:
#
__tracebackhide__: bool = hide_tb
if validate_pld_spec:
# TODO: prolly wrap this as a `show_frame_when_not()`
try:
msgops.validate_payload_msg(
pld_msg=started_msg,
pld_value=value,
@ -1491,6 +1492,12 @@ class Context:
strict_pld_parity=strict_pld_parity,
hide_tb=hide_tb,
)
except BaseException as err:
if not isinstance(err, MsgTypeError):
__tracebackhide__: bool = False
raise
# TODO: maybe a flag to by-pass encode op if already done
# here in caller?
@ -2185,11 +2192,6 @@ async def open_context_from_portal(
try:
result_or_err: Exception|Any = await ctx.result()
except BaseException as berr:
# cancelled before (or maybe during?) final result capture
# if isinstance(trio.Cancelled, berr):
# from .devx import mk_pdb
# mk_pdb.set_trace()
# on normal teardown, if we get some error
# raised in `Context.result()` we still want to
# save that error on the ctx's state to
@ -2201,7 +2203,7 @@ async def open_context_from_portal(
ctx._local_error: BaseException = scope_err
raise
# yes! this worx Bp
# yes this worx!
# from .devx import _debug
# await _debug.pause()

32
tractor/_exceptions.py
View File

@ -1232,14 +1232,13 @@ def _raise_from_unexpected_msg(
_raise_from_no_key_in_msg = _raise_from_unexpected_msg
def _mk_msg_type_err(
def _mk_send_mte(
msg: Any|bytes|MsgType,
codec: MsgCodec|MsgDec,
message: str|None = None,
verb_header: str = '',
src_validation_error: ValidationError|None = None,
src_type_error: TypeError|None = None,
is_invalid_payload: bool = False,
@ -1247,12 +1246,10 @@ def _mk_msg_type_err(
) -> MsgTypeError:
'''
Compose a `MsgTypeError` from an input runtime context.
Compose a `MsgTypeError` from a `Channel.send()`-side error,
normally raised witih a runtime IPC `Context`.
'''
# `Channel.send()` case
if src_validation_error is None:
if isinstance(codec, MsgDec):
raise RuntimeError(
'`codec` must be a `MsgCodec` for send-side errors?'
@ -1298,8 +1295,27 @@ def _mk_msg_type_err(
msgtyperr.__cause__ = src_type_error
return msgtyperr
# `Channel.recv()` case
else:
def _mk_recv_mte(
msg: Any|bytes|MsgType,
codec: MsgCodec|MsgDec,
message: str|None = None,
verb_header: str = '',
src_validation_error: ValidationError|None = None,
is_invalid_payload: bool = False,
**mte_kwargs,
) -> MsgTypeError:
'''
Compose a `MsgTypeError` from a
`Channel|Context|MsgStream.receive()`-side error,
normally raised witih a runtime IPC ctx or streaming
block.
'''
msg_dict: dict|None = None
bad_msg: PayloadMsg|None = None

12
tractor/_ipc.py
View File

@ -49,7 +49,8 @@ from tractor._exceptions import (
MsgTypeError,
pack_from_raise,
TransportClosed,
_mk_msg_type_err,
_mk_send_mte,
_mk_recv_mte,
)
from tractor.msg import (
_ctxvar_MsgCodec,
@ -256,7 +257,7 @@ class MsgpackTCPStream(MsgTransport):
# and always raise such that spec violations
# are never allowed to be caught silently!
except msgspec.ValidationError as verr:
msgtyperr: MsgTypeError = _mk_msg_type_err(
msgtyperr: MsgTypeError = _mk_recv_mte(
msg=msg_bytes,
codec=codec,
src_validation_error=verr,
@ -321,7 +322,7 @@ class MsgpackTCPStream(MsgTransport):
if type(msg) not in msgtypes.__msg_types__:
if strict_types:
raise _mk_msg_type_err(
raise _mk_send_mte(
msg,
codec=codec,
)
@ -333,8 +334,9 @@ class MsgpackTCPStream(MsgTransport):
try:
bytes_data: bytes = codec.encode(msg)
except TypeError as typerr:
msgtyperr: MsgTypeError = _mk_msg_type_err(
except TypeError as _err:
typerr = _err
msgtyperr: MsgTypeError = _mk_send_mte(
msg,
codec=codec,
message=(

24
tractor/msg/_ops.py
View File

@ -47,7 +47,7 @@ from tractor._exceptions import (
InternalError,
_raise_from_unexpected_msg,
MsgTypeError,
_mk_msg_type_err,
_mk_recv_mte,
pack_error,
)
from tractor._state import current_ipc_ctx
@ -264,7 +264,7 @@ class PldRx(Struct):
# pack mgterr into error-msg for
# reraise below; ensure remote-actor-err
# info is displayed nicely?
mte: MsgTypeError = _mk_msg_type_err(
mte: MsgTypeError = _mk_recv_mte(
msg=msg,
codec=self.pld_dec,
src_validation_error=valerr,
@ -277,19 +277,6 @@ class PldRx(Struct):
if is_started_send_side:
raise mte
# XXX TODO: remove this right?
# => any bad stated/return values should
# always be treated a remote errors right?
#
# if (
# expect_msg is Return
# or expect_msg is Started
# ):
# # set emulated remote error more-or-less as the
# # runtime would
# ctx: Context = getattr(ipc, 'ctx', ipc)
# ctx._maybe_cancel_and_set_remote_error(mte)
# NOTE: the `.message` is automatically
# transferred into the message as long as we
# define it as a `Error.message` field.
@ -799,13 +786,18 @@ def validate_payload_msg(
# raise any msg type error NO MATTER WHAT!
except ValidationError as verr:
mte: MsgTypeError = _mk_msg_type_err(
try:
mte: MsgTypeError = _mk_recv_mte(
msg=roundtripped,
codec=codec,
src_validation_error=verr,
verb_header='Trying to send ',
is_invalid_payload=True,
)
except BaseException:
__tracebackhide__: bool = False
raise
if not raise_mte:
return mte