added request length logging

server.py

@@ -385,8 +385,18 @@ async def create_message(request_data: MessagesRequest, raw_request: Request):
                     usage=Usage(input_tokens=100, output_tokens=5),
                 )
 
+        # Calculate total request length in characters
+        total_length = 0
+        for msg in request_data.messages:
+            if isinstance(msg.content, str):
+                total_length += len(msg.content)
+            elif isinstance(msg.content, list):
+                for block in msg.content:
+                    total_length += len(json.dumps(block))
+
         logger.info(
-            f"Request: model={request_data.model}, messages={len(request_data.messages)}, stream={request_data.stream}"
+            f"Request: model={request_data.model}, messages={len(request_data.messages)}, "
+            f"length={total_length}, stream={request_data.stream}"
         )
         log_request_details(request_data)