mirror of
https://github.com/hwchase17/langchain
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81 lines
3.1 KiB
Python
81 lines
3.1 KiB
Python
from __future__ import annotations
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from typing import Dict, List, Optional, Type
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from langchain_core.pydantic_v1 import root_validator
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from langchain_community.agent_toolkits.base import BaseToolkit
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from langchain_community.tools import BaseTool
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from langchain_community.tools.file_management.copy import CopyFileTool
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from langchain_community.tools.file_management.delete import DeleteFileTool
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from langchain_community.tools.file_management.file_search import FileSearchTool
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from langchain_community.tools.file_management.list_dir import ListDirectoryTool
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from langchain_community.tools.file_management.move import MoveFileTool
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from langchain_community.tools.file_management.read import ReadFileTool
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from langchain_community.tools.file_management.write import WriteFileTool
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_FILE_TOOLS: List[Type[BaseTool]] = [
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CopyFileTool,
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DeleteFileTool,
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FileSearchTool,
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MoveFileTool,
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ReadFileTool,
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WriteFileTool,
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ListDirectoryTool,
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]
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_FILE_TOOLS_MAP: Dict[str, Type[BaseTool]] = {
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tool_cls.__fields__["name"].default: tool_cls for tool_cls in _FILE_TOOLS
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}
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class FileManagementToolkit(BaseToolkit):
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"""Toolkit for interacting with local files.
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*Security Notice*: This toolkit provides methods to interact with local files.
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If providing this toolkit to an agent on an LLM, ensure you scope
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the agent's permissions to only include the necessary permissions
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to perform the desired operations.
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By **default** the agent will have access to all files within
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the root dir and will be able to Copy, Delete, Move, Read, Write
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and List files in that directory.
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Consider the following:
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- Limit access to particular directories using `root_dir`.
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- Use filesystem permissions to restrict access and permissions to only
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the files and directories required by the agent.
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- Limit the tools available to the agent to only the file operations
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necessary for the agent's intended use.
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- Sandbox the agent by running it in a container.
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See https://python.langchain.com/docs/security for more information.
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"""
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root_dir: Optional[str] = None
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"""If specified, all file operations are made relative to root_dir."""
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selected_tools: Optional[List[str]] = None
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"""If provided, only provide the selected tools. Defaults to all."""
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@root_validator
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def validate_tools(cls, values: dict) -> dict:
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selected_tools = values.get("selected_tools") or []
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for tool_name in selected_tools:
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if tool_name not in _FILE_TOOLS_MAP:
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raise ValueError(
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f"File Tool of name {tool_name} not supported."
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f" Permitted tools: {list(_FILE_TOOLS_MAP)}"
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)
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return values
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def get_tools(self) -> List[BaseTool]:
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"""Get the tools in the toolkit."""
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allowed_tools = self.selected_tools or _FILE_TOOLS_MAP
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tools: List[BaseTool] = []
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for tool in allowed_tools:
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tool_cls = _FILE_TOOLS_MAP[tool]
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tools.append(tool_cls(root_dir=self.root_dir))
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return tools
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__all__ = ["FileManagementToolkit"]
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