Tracing decorator for functions #2621
Description
Is your feature request related to a problem?
Tracing every use of a function is prone to error. It is very hard to do in some contexts, such as functions from a third party library that don't integrate with OTel, without lots of manual span management.
Describe the solution you'd like
I would like to have a first party tracing decorator.
Describe alternatives you've considered
I have rolled my own for now:
import functools
from contextlib import nullcontext
from typing import Callable
from opentelemetry import trace
from opentelemetry.trace import NonRecordingSpan
def traced(name: str) -> Callable:
"""Wrap a function in an OTel span."""
def decorator(func: Callable):
@functools.wraps(func)
def wraps(*args, **kwargs):
if isinstance(trace.get_current_span(), NonRecordingSpan):
span = nullcontext()
else:
span = trace.get_tracer(func.__module__).start_as_current_span(name)
with span:
return func(*args, **kwargs)
return wraps
return decoratorAdditional context
Honeycomb does something similar in their beeline module with the traced decorator.