Tiny refactor ModelConfig.from_server_args (#5219)

python/sglang/srt/configs/model_config.py

@@ -24,6 +24,7 @@ from transformers import PretrainedConfig
 
 from sglang.srt.hf_transformers_utils import get_config, get_context_length
 from sglang.srt.layers.quantization import QUANTIZATION_METHODS
+from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils import get_bool_env_var, is_hip
 
 logger = logging.getLogger(__name__)
@@ -210,6 +211,21 @@ class ModelConfig:
         self.hf_eos_token_id = self.get_hf_eos_token_id()
         self.image_token_id = getattr(self.hf_config, "image_token_id", None)
 
+    @staticmethod
+    def from_server_args(server_args: ServerArgs, model_path: str = None, **kwargs):
+        return ModelConfig(
+            model_path=model_path or server_args.model_path,
+            trust_remote_code=server_args.trust_remote_code,
+            revision=server_args.revision,
+            context_length=server_args.context_length,
+            model_override_args=server_args.json_model_override_args,
+            is_embedding=server_args.is_embedding,
+            enable_multimodal=server_args.enable_multimodal,
+            dtype=server_args.dtype,
+            quantization=server_args.quantization,
+            **kwargs,
+        )
+
     # adapted from https://github.com/vllm-project/vllm/blob/main/vllm/config.py#L289
     def get_total_num_kv_heads(self) -> int:
         """Returns the total number of KV heads."""