- Prometheus metrics go via pushgateway, as different worker processes might have different registries that are not picked up by Prometheus

common/utils/prometheus_utils.py

@@ -0,0 +1,11 @@
+from flask import current_app
+from prometheus_client import push_to_gateway
+
+
+def sanitize_label(value):
+    """Convert value to valid Prometheus label by removing/replacing invalid chars"""
+    if value is None:
+        return ""
+    # Replace spaces and special chars with underscores
+    import re
+    return re.sub(r'[^a-zA-Z0-9_]', '_', str(value))