Can we have decorators for tracing and metrics

[srikanthkollu]

This makes very easy for developers to instrument code. It saves ton of time for developers to instrument their code. Methods just focus on business logic.

@tracer.with_span("span_name")
def my_func(..., span):
# do work()
...
span.set_attributes({"name", "abc"})
# finish work()

[srikanthkollu]

Can we inject Decorators to all methods during server startup based on modules configured.

[owais]

Should the decorator inject span as an attribute to the decorated function? It is certainly convenient but I think it is not worth having to update every function signature where the decorator could be used. May be we can skip doing that and let users use get_current_span() inside the functions when needed.