Fix: gen_config in lmdeploypipeline updated by input gen_params (#151)

lagent/llms/lmdepoly_wrapper.py

@@ -238,14 +238,19 @@ def generate(self,
         Returns:
             (a list of/batched) text/chat completion
         """
+        from lmdeploy.messages import GenerationConfig
+
         batched = True
         if isinstance(inputs, str):
             inputs = [inputs]
             batched = False
         prompt = inputs
         gen_params = self.update_gen_params(**kwargs)
+        max_tokens = gen_params.pop('max_tokens')
+        gen_config = GenerationConfig(**gen_params)
+        gen_config.max_new_tokens = max_tokens
         response = self.model.batch_infer(
-            prompt, do_preprocess=do_preprocess, **gen_params)
+            prompt, gen_config=gen_config, do_preprocess=do_preprocess)
         response = [resp.text for resp in response]
         # remove stop_words
         response = filter_suffix(response, self.gen_params.get('stop_words'))