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from typing import Optional
from pydantic import PrivateAttr
class CacheHandler:
"""Callback handler for tool usage."""
_cache: PrivateAttr = {}
def __init__(self):
self._cache = {}
def add(self, tool, input, output):
input = input.strip()
self._cache[f"{tool}-{input}"] = output
def read(self, tool, input) -> Optional[str]:
input = input.strip()
return self._cache.get(f"{tool}-{input}")
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