Referencing issue #26418.
Prometheus metric names can only contain chars a-zA-Z0-9, : and _
(https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
HA currently generates invalid prometheus names, e.g. if the unit for a
sensor is a non-ASCII character containing ° or μ. To resolve, we need
to sanitize the name before creating, replacing non-valid characters
with a valid representation. In this case, I've used
"u{unicode-hex-code}".
Also updated the test case to make sure that the ° case is handled.
* - Change how we extract the metrics for sensors
- Add component filtering as seen in influxdb
- Add metric override as seen in influxdb
- Add more unit tests with actual device data
* Extract sensor metric logic to separate handlers
* Update prometheus dependency
* Format using black
* Format using black
* Fix flake8
* Move sensor metric handler list to init
* Use f strings instead of .format
## Description:
Fix Prometheus casting issues
**Related issue (if applicable):** fixes#8659.
## Checklist:
- [x] The code change is tested and works locally.
- [x] Local tests pass with `tox`. **Your PR cannot be merged unless tests pass**
- [x] There is no commented out code in this PR.
Franck Nijhof
Andrew Rowson
Per Osbäck
Paulus Schoutsen
cgtobi
Paulus Schoutsen
Robbie Trencheny
Richard Mitchell
Joakim Plate
Fabian Affolter