Create a python autoinstrumentor

Hello all,

It would be convenient to have a python autoinstrumentor, which would create a new span for each function, add inputs and outputs of functions as attributes etc...
I would just call PythonInstrumentor.instrument() and I would receive the traces for all function calls and returns in my collector.

There might be different ways to do that, the first easy way I see is to use the sys.monitoring to start a span on function calls and terminate them on function returns

Questions:

• Does a python autoinstrumentor like this already exist ?
• If it does not exist, why is it a bad idea ?

Also do you see reasons why it would be a bad idea to implement this python instrumentor using sys.monitoring ?

Thank you for your responses

Start by reviewing the proposed PythonInstrumentor.instrument() API and Python's sys.monitoring function-call and return events. Check whether an equivalent autoinstrumentor already exists, then assess the scope and trade-offs of creating spans with function inputs and outputs. Done requires a decided implementation direction and defined behavior, which this issue does not currently specify.