Catty Steve
fd18b547e5
Adds the `user.rust` UPM to workshop-engine for managing Rust toolchains, components, cross-compilation targets, and cargo operations: - `rustup default <toolchain>` / `rustup component add` / `rustup target add` - `cargo fetch` for dependency pre-fetch with optional `--locked` - `cargo install` for global crate tools with registry support Includes 275-line test suite (`tests/upm/test_rust.py`) covering the full lifecycle with optional network tests.
55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
"""
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Disk-based cache for LLM API responses.
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Uses SHA256 of (prompt + model + system_prompt) as cache key.
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Cache files stored as JSON in ``.cache/`` directory.
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"""
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import hashlib
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import json
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from pathlib import Path
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class LLMCache:
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"""SHA256-based disk cache for LLM API responses."""
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def __init__(self, cache_dir: str | None = None):
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if cache_dir is None:
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cache_dir = "/tmp/llm-cache"
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self.cache_dir = Path(cache_dir)
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self.cache_dir.mkdir(parents=True, exist_ok=True)
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def _make_key(self, prompt: str, model: str, system_prompt: str = "") -> str:
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"""Create deterministic cache key from request parameters."""
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data = json.dumps(
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{"prompt": prompt, "model": model, "system": system_prompt},
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sort_keys=True,
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)
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return hashlib.sha256(data.encode()).hexdigest()
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def get(self, prompt: str, model: str, system_prompt: str = "") -> dict | None:
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"""Retrieve cached response if exists."""
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key = self._make_key(prompt, model, system_prompt)
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path = self.cache_dir / f"{key}.json"
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if path.exists():
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try:
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with open(path) as f:
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return json.load(f)
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except (json.JSONDecodeError, IOError):
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return None
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return None
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def set(
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self, prompt: str, model: str, system_prompt: str, response: dict
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) -> None:
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"""Store response in cache."""
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key = self._make_key(prompt, model, system_prompt)
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path = self.cache_dir / f"{key}.json"
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with open(path, "w") as f:
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json.dump(response, f, ensure_ascii=False)
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def clear(self) -> None:
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"""Clear all cached responses."""
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for f in self.cache_dir.glob("*.json"):
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f.unlink()
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