Files
crewAI/src/crewai/agents/tools_handler.py
C0deZ ae33fdd05f refactor: Move BaseTool to main package and centralize tool description generation (#1514)
* move base_tool to main package and consolidate tool desscription generation

* update import path

* update tests

* update doc

* add base_tool test

* migrate agent delegation tools to use BaseTool

* update tests

* update import path for tool

* fix lint

* update param signature

* add from_langchain to BaseTool for backwards support of langchain tools

* fix the case where StructuredTool doesn't have func

---------

Co-authored-by: c0dez <li@vitablehealth.com>
Co-authored-by: Brandon Hancock (bhancock_ai) <109994880+bhancockio@users.noreply.github.com>
2024-11-01 12:30:48 -04:00

33 lines
1.3 KiB
Python

from typing import Any, Optional, Union
from ..tools.cache_tools.cache_tools import CacheTools
from ..tools.tool_calling import InstructorToolCalling, ToolCalling
from .cache.cache_handler import CacheHandler
class ToolsHandler:
"""Callback handler for tool usage."""
last_used_tool: ToolCalling = {} # type: ignore # BUG?: Incompatible types in assignment (expression has type "Dict[...]", variable has type "ToolCalling")
cache: Optional[CacheHandler]
def __init__(self, cache: Optional[CacheHandler] = None):
"""Initialize the callback handler."""
self.cache = cache
self.last_used_tool = {} # type: ignore # BUG?: same as above
def on_tool_use(
self,
calling: Union[ToolCalling, InstructorToolCalling],
output: str,
should_cache: bool = True,
) -> Any:
"""Run when tool ends running."""
self.last_used_tool = calling # type: ignore # BUG?: Incompatible types in assignment (expression has type "Union[ToolCalling, InstructorToolCalling]", variable has type "ToolCalling")
if self.cache and should_cache and calling.tool_name != CacheTools().name:
self.cache.add(
tool=calling.tool_name,
input=calling.arguments,
output=output,
)