fix mypy error

api/core/agent/cot_agent_runner.py

@@ -69,8 +69,11 @@ class CotAgentRunner(BaseAgentRunner, ABC):
         tool_instances, prompt_messages_tools = self._init_prompt_tools()
         self._prompt_messages_tools = prompt_messages_tools
 
+        # fix metadata filter not work
+        if app_config.dataset is not None:
             metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
             for key, dataset_retriever_tool in tool_instances.items():
+                if hasattr(dataset_retriever_tool, 'retrieval_tool'):
                     dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
 
         function_call_state = True

api/core/agent/fc_agent_runner.py

@@ -45,8 +45,11 @@ class FunctionCallAgentRunner(BaseAgentRunner):
         # convert tools into ModelRuntime Tool format
         tool_instances, prompt_messages_tools = self._init_prompt_tools()
 
+        # fix metadata filter not work
+        if app_config.dataset is not None:
             metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
             for key, dataset_retriever_tool in tool_instances.items():
+                if hasattr(dataset_retriever_tool, 'retrieval_tool'):
                     dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
 
         assert app_config.agent