File size: 926 Bytes
c289d87 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | from __future__ import annotations
import json
from dataclasses import dataclass
from pathlib import Path
from typing import Any
@dataclass
class DiskCache:
"""Simple JSON-on-disk cache for reproducible intermediate artifacts."""
cache_dir: Path
def __post_init__(self) -> None:
self.cache_dir.mkdir(parents=True, exist_ok=True)
def _path(self, key: str) -> Path:
safe_key = key.replace("/", "_")
return self.cache_dir / f"{safe_key}.json"
def set(self, key: str, value: Any) -> Path:
target = self._path(key)
with target.open("w", encoding="utf-8") as handle:
json.dump(value, handle, indent=2)
return target
def get(self, key: str) -> Any | None:
target = self._path(key)
if not target.exists():
return None
with target.open("r", encoding="utf-8") as handle:
return json.load(handle)
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