Flask/WSGI Ignore Tracing Specific Endpoints

[disfluxly]

Describe the solution you'd like
Include a decorator or configuration setting that toggles tracing for requests against a specific endpoint. Given a Flask Application that sits behind a Load Balancer where the LB checks a /status endpoint every couple of seconds, this quickly leads to a large number of traces against that endpoint (especially when you have 100 of these tasks...). It would be cleaner, and save network/storage cost, if we could disable tracing against specific endpoints such as this.

[toumorokoshi]

This seems like a good option. I wonder if there's something more general in the opentelemetry-specification around this.Do you have thoughts on what an API for that configuration might look like?

We'll discuss this at our next SIG meeting as well.

[disfluxly]

From a code perspective, it would be nice to have a decorator that would be used to specify that the following route be trace-ignored. In addition, there would also need to be a mechanism to access the route api directly to set an ignore on routes created by third-party libraries, such as https://github.com/Runscope/healthcheck

[disfluxly]

@toumorokoshi - Curious, how did the SIG meeting go?

[lzchen]

Closed with #565