Implement served_model_name to customize model id when use local mode… (#749)

Co-authored-by: Ying Sheng <sqy1415@gmail.com>

python/sglang/srt/managers/tokenizer_manager.py

@@ -79,6 +79,7 @@ class TokenizerManager:
         self.send_to_router.connect(f"tcp://127.0.0.1:{port_args.controller_port}")
 
         self.model_path = server_args.model_path
+        self.served_model_name = server_args.served_model_name
         self.hf_config = get_config(
             self.model_path,
             trust_remote_code=server_args.trust_remote_code,

python/sglang/srt/server.py

@@ -190,10 +190,10 @@ async def retrieve_file_content(file_id: str):
 @app.get("/v1/models")
 def available_models():
     """Show available models."""
-    model_names = [tokenizer_manager.model_path]
+    served_model_names = [tokenizer_manager.served_model_name]
     model_cards = []
-    for model_name in model_names:
-        model_cards.append(ModelCard(id=model_name, root=model_name))
+    for served_model_name in served_model_names:
+        model_cards.append(ModelCard(id=served_model_name, root=served_model_name))
     return ModelList(data=model_cards)
 
 

python/sglang/srt/server_args.py

@@ -32,6 +32,7 @@ class ServerArgs:
     trust_remote_code: bool = True
     context_length: Optional[int] = None
     quantization: Optional[str] = None
+    served_model_name: Optional[str] = None
     chat_template: Optional[str] = None
 
     # Port
@@ -90,6 +91,10 @@ class ServerArgs:
     def __post_init__(self):
         if self.tokenizer_path is None:
             self.tokenizer_path = self.model_path
+
+        if self.served_model_name is None:
+            self.served_model_name = self.model_path
+
         if self.mem_fraction_static is None:
             if self.tp_size >= 16:
                 self.mem_fraction_static = 0.79
@@ -202,6 +207,12 @@ class ServerArgs:
             ],
             help="The quantization method.",
         )
+        parser.add_argument(
+            "--served-model-name",
+            type=str,
+            default=ServerArgs.served_model_name,
+            help="Override the model name returned by the v1/models endpoint in OpenAI API server.",
+        )
         parser.add_argument(
             "--chat-template",
             type=str,