add check asr server model type, test=doc

demos/streaming_asr_server/conf/application.yaml

@@ -29,7 +29,8 @@ asr_online:
     cfg_path: 
     decode_method: 
     force_yes: True
-    device: cpu # cpu or gpu:id
+    device: 'cpu' # cpu or gpu:id
+    decode_method: "attention_rescoring"
     am_predictor_conf:
         device:  # set 'gpu:id' or 'cpu'
         switch_ir_optim: True

paddlespeech/server/engine/asr/online/asr_engine.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 import copy
 import os
+import sys
 from typing import Optional
 
 import numpy as np
@@ -588,7 +589,7 @@ class ASRServerExecutor(ASRExecutor):
         self.pretrained_models = pretrained_models
 
     def _init_from_path(self,
-                        model_type: str='deepspeech2online_aishell',
+                        model_type: str=None,
                         am_model: Optional[os.PathLike]=None,
                         am_params: Optional[os.PathLike]=None,
                         lang: str='zh',
@@ -599,6 +600,12 @@ class ASRServerExecutor(ASRExecutor):
         """
         Init model and other resources from a specific path.
         """
+        if not model_type or not lang or not sample_rate:
+            logger.error(
+                "The model type or lang or sample rate is None, please input an valid server parameter yaml"
+            )
+            return False
+
         self.model_type = model_type
         self.sample_rate = sample_rate
         sample_rate_str = '16k' if sample_rate == 16000 else '8k'
@@ -1028,12 +1035,15 @@ class ASREngine(BaseEngine):
                 self.device = paddle.get_device()
             logger.info(f"paddlespeech_server set the device: {self.device}")
             paddle.set_device(self.device)
-        except BaseException:
+        except BaseException as e:
             logger.error(
-                "Set device failed, please check if device is already used and the parameter 'device' in the yaml file"
+                f"Set device failed, please check if device '{self.device}' is already used and the parameter 'device' in the yaml file"
             )
+            logger.error(
+                "If all GPU or XPU is used, you can set the server to 'cpu'")
+            sys.exit(-1)
 
-        self.executor._init_from_path(
+        if not self.executor._init_from_path(
                 model_type=self.config.model_type,
                 am_model=self.config.am_model,
                 am_params=self.config.am_params,
@@ -1041,7 +1051,11 @@ class ASREngine(BaseEngine):
                 sample_rate=self.config.sample_rate,
                 cfg_path=self.config.cfg_path,
                 decode_method=self.config.decode_method,
-            am_predictor_conf=self.config.am_predictor_conf)
+                am_predictor_conf=self.config.am_predictor_conf):
+            logger.error(
+                "Init the ASR server occurs error, please check the server configuration yaml"
+            )
+            return False
 
         logger.info("Initialize ASR server engine successfully.")
         return True