Metric for requests in progress. First custom prometheus metric

Signed-off-by: Mike Kingsbury <[email protected]>

cachito/web/metrics.py

@@ -39,11 +39,11 @@ def init_metrics(app):
     cachito_metrics["request_duration"] = request_duration
 
 
-def requests_inc(state):
+def requests_inc(state: str) -> None:
     """Increase the number of requests in given state."""
     cachito_metrics["gauge_state"].labels(state=state, host=hostname).inc()
 
 
-def requests_dec(state):
+def requests_dec(state: str) -> None:
     """Decrease the number of requests in the given state."""
     cachito_metrics["gauge_state"].labels(state=state, host=hostname).dec()

requirements-test.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
+# This file is autogenerated by pip-compile with python 3.9
 # To update, run:
 #
 #    pip-compile --generate-hashes --output-file=requirements-test.txt requirements-test.in