add langchain_tool

sample_standard_app/app/core/tool/langchain_tool.py

@@ -0,0 +1,51 @@
+# !/usr/bin/env python3
+# -*- coding:utf-8 -*-
+import importlib
+import json
+# @Time    : 2024/6/24 11:42
+# @Author  : weizjajj 
+# @Email   : weizhongjie.wzj@antgroup.com
+# @FileName: langchain_tool.py
+
+from typing import Optional, Type
+
+from langchain_core.tools import BaseTool, Tool as LangchainTool
+
+from agentuniverse.agent.action.tool.tool import Tool, ToolInput
+from agentuniverse.base.config.component_configer.configers.tool_configer import ToolConfiger
+
+
+class LangChainTool(Tool):
+    name: Optional[str] = ""
+    description: Optional[str] = ""
+    tool: Optional[BaseTool] = None
+
+    def execute(self, tool_input: ToolInput):
+        input = tool_input.get_data("input")
+        callbacks = tool_input.get_data("callbacks", None)
+        return self.tool.run(json.loads(input), callbacks=callbacks)
+
+    def initialize_by_component_configer(self, component_configer: ToolConfiger) -> 'Tool':
+        super().initialize_by_component_configer(component_configer)
+        self.init_langchain_tool(component_configer)
+        self.description = self.tool.description
+        return self
+
+    def init_langchain_tool(self, component_configer):
+        langchain_info = component_configer.configer.value.get('langchain')
+        module = langchain_info.get("module")
+        class_name = langchain_info.get("class_name")
+        module = importlib.import_module(module)
+        clz = getattr(module, class_name)
+        init_params = langchain_info.get("init_params")
+        self.get_langchain_tool(init_params, clz)
+        return self.tool
+
+    def get_langchain_tool(self, init_params: dict, clz: Type[BaseTool]):
+        if init_params:
+            self.tool = clz(**init_params)
+        else:
+            self.tool = clz()
+
+    def as_langchain(self):
+        return self.tool