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Fix @tag_args for non-methods (#17604)

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The decorator assumed we were always wrapping function methods
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Erik Johnston 2024-08-27 11:47:28 +01:00 committed by GitHub
parent f1a1c7fc53
commit b4d95409fb
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2 changed files with 8 additions and 7 deletions
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1
changelog.d/17604.misc Normal file
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@ -0,0 +1 @@
Add support to `@tag_args` for standalone functions.

14
synapse/logging/opentracing.py
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@ -1032,13 +1032,13 @@ def tag_args(func: Callable[P, R]) -> Callable[P, R]:
def _wrapping_logic(
_func: Callable[P, R], *args: P.args, **kwargs: P.kwargs
) -> Generator[None, None, None]:
# We use `[1:]` to skip the `self` object reference and `start=1` to
# make the index line up with `argspec.args`.
#
# FIXME: We could update this to handle any type of function by ignoring the
# first argument only if it's named `self` or `cls`. This isn't fool-proof
# but handles the idiomatic cases.
for i, arg in enumerate(args[1:], start=1):
for i, arg in enumerate(args, start=0):
if argspec.args[i] in ("self", "cls"):
# Ignore `self` and `cls` values. Ideally we'd properly detect
# if we were wrapping a method, but that is really non-trivial
# and this is good enough.
continue
set_tag(SynapseTags.FUNC_ARG_PREFIX + argspec.args[i], str(arg))
set_tag(SynapseTags.FUNC_ARGS, str(args[len(argspec.args) :]))
set_tag(SynapseTags.FUNC_KWARGS, str(kwargs))