Inject tracing HTML meta tags in rendered HTML

[antonpirker]

Problem Statement

We have a function trace_propagation_meta() (https://github.com/getsentry/sentry-python/blob/master/sentry_sdk/hub.py#L723) but it is never used anywhere.

Solution Brainstorm

• Refactor trace_propagation_meta() to use the new get_traceparent() and get_baggage() apis (https://github.com/getsentry/sentry-python/blob/master/sentry_sdk/api.py#L252): Use new top level api in trace_propagation_meta #2202
• Flask: Update template helper: Update Flask html meta helper  #2203
• Django: Add template helper: Add Django template tag for adding sentry tracing information #2222
• Starlette/FastAPI (Jinja) Add template helper: Add Starlette/FastAPI template tag for adding sentry tracing information #2225
• Update docs to include template helper for Flask/Django/Starlette/FastAPI: [Python] Add template meta helper docs for Django/Fastapi/Starlette/Flask. sentry-docs#7325

This will make it WAAY easier for users to setup distributed tracing for use cases when the server is the head of trace and renders HTML and the JS in the frontend then picks up the trace.

[sl0thentr0py]

duplicate
#1341

[antonpirker]

Thanks for linking the other issue @sl0thentr0py
So we have this in Flask already. Nice.
I will probably remove trace_propagation_meta() with something new that uses the new top level functions and then make flask, fastaapi and django use this new function. Cool with you to remove trace_propagation_meta?

[sl0thentr0py]

why remove? just change it internally if need be, this is on the hub so technically public api

[antonpirker]

Was just thinking this, keeping it and just change the internals.

[antonpirker]

This is done, closing the issue