starlette/fastapi: fix error on host-based routing #3507
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Description
Handle case where the Starlette/FastAPI app uses a hosted-based routing. In this case, there is no
pathattribute to read from the routing class. Therefore, fallback to the path present inscope. The fix is inspired from what Sentry did to fix a similar bug: https://github.com/getsentry/sentry-python/blob/312f85739af27bb9665f61fedd9a589178a67000/sentry_sdk/integrations/starlette.py#L696-L700Fixes #3506
Type of change
Please delete options that are not relevant.
How Has This Been Tested?
Added basic unit tests to assess the instrument not longer crashes when a host-based route is called.
Note
I've not added assertions regarding the collected spans/traces, wasn't really sure where to start. But happy to improve that with some guidance :)
Does This PR Require a Core Repo Change?
Checklist:
See contributing.md for styleguide, changelog guidelines, and more.
[ ] Documentation has been updated(not relevant)