Add sanitize_metric_name

VERSION

@@ -1 +1 @@
-4.0.1
+4.0.2

src/utils/common.py

@@ -89,3 +89,7 @@ def is_uuid (var):
 
 def is_not_uuid (var):
     return not is_uuid(var)
+
+_allowed_chars_pattern = re.compile(r'[^a-zA-Z0-9_\-\.]')
+def sanitize_metric_name(name: str):
+    return re.sub(_allowed_chars_pattern, '_', name)

src/utils/counter.py

@@ -1,9 +1,11 @@
 from prometheus_client import Counter
 
 from utils.cid import get_current_cid
+from utils.common import sanitize_metric_name
 from utils.otel import get_otel_meter
 
 def create_counter(name, description):
+    name = sanitize_metric_name(name)
     return {
         'otel': get_otel_meter().create_counter(
                     name = name,

src/utils/gauge.py

@@ -3,12 +3,14 @@
 from prometheus_client import Gauge
 from opentelemetry.metrics import Observation
 
+from utils.common import sanitize_metric_name
 from utils.otel import get_otel_meter
 
 _numeric_value_pattern = r"-?\d+\.\d+"
 _current_gauge_values = {}
 
 def create_gauge(name, description):
+    name = sanitize_metric_name(name)
     _current_gauge_values[name] = 0.0
 
     def observable_gauge_func(_):