feat(metrics): distinguish received and acknowledged CDRs

app/api/server.py

@@ -133,6 +133,7 @@ class IngestionAPIServer:
             await self._error(writer, 404, "not_found", f"Cannot {method} {path}")
 
     async def _handle_raw_cdr_ingestion(self, writer, body):
+        api_metrics.increment_received(1)
         try:
             payload = parse_payload(body)
             validate_structure(payload)
@@ -158,7 +159,7 @@ class IngestionAPIServer:
             logger.warning(str(exc), extra={"raw_id": payload["raw_id"], "event": "kafka_delivery_failed"})
             await self._error(writer, 503, "broker_unavailable", "Delivery unconfirmed; retry with the same raw_id and payload")
             return
-        api_metrics.increment_received(1)
+        api_metrics.increment_acknowledged(1)
         await self._json(writer, 202, {"status": "accepted", "raw_id": payload["raw_id"], "queued": True})
 
     async def _error(self, writer, status, error, detail):