File size: 4,682 Bytes
f4cc109 | 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 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | """Persistent SQLite cache for judge decisions.
The cache key covers everything that can change a judged label:
case id | gold text | prediction text | provider | model | prompt version | evaluation version
Changing any of them yields a different key, so a re-run after editing a
prediction, swapping the judge model or publishing a new prompt version does not
reuse a stale label.
"""
from __future__ import annotations
import hashlib
import sqlite3
import threading
from pathlib import Path
from typing import Optional
__all__ = ["JudgeCache", "NullCache", "make_cache_key"]
_SCHEMA = """
CREATE TABLE IF NOT EXISTS judgements (
key TEXT PRIMARY KEY,
case_id TEXT NOT NULL,
label TEXT,
raw_output TEXT,
attempts INTEGER DEFAULT 0,
error TEXT,
judge_provider TEXT,
judge_model TEXT,
prompt_version TEXT,
evaluation_version TEXT,
created_at TEXT DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_judgements_case ON judgements(case_id);
"""
def make_cache_key(
case_id: str,
gold_text: str,
pred_text: str,
judge_provider: str,
judge_model: str,
prompt_version: str,
evaluation_version: str,
) -> str:
digest = hashlib.sha256()
for part in (
case_id,
gold_text,
pred_text,
judge_provider,
judge_model,
prompt_version,
evaluation_version,
):
digest.update(str(part).encode("utf-8"))
digest.update(b"\x1f") # unit separator: prevents field-boundary collisions
return digest.hexdigest()
class CacheEntry:
__slots__ = ("label", "raw_output", "attempts", "error")
def __init__(self, label, raw_output, attempts, error):
self.label = label
self.raw_output = raw_output
self.attempts = attempts
self.error = error
class JudgeCache:
"""Thread-safe SQLite-backed cache.
Only *successful* judgements (a valid label) are stored; a failed call is not
cached so that a re-run retries it, which is what ``--resume`` needs.
"""
def __init__(self, path: Path | str) -> None:
self.path = Path(path)
self.path.parent.mkdir(parents=True, exist_ok=True)
self._lock = threading.Lock()
self._conn = sqlite3.connect(str(self.path), check_same_thread=False)
self._conn.execute("PRAGMA journal_mode=WAL")
self._conn.executescript(_SCHEMA)
self._conn.commit()
self.hits = 0
self.misses = 0
def get(self, key: str) -> Optional[CacheEntry]:
with self._lock:
row = self._conn.execute(
"SELECT label, raw_output, attempts, error FROM judgements WHERE key = ?",
(key,),
).fetchone()
if row is None:
self.misses += 1
return None
self.hits += 1
return CacheEntry(row[0], row[1], row[2] or 0, row[3])
def put(
self,
key: str,
case_id: str,
label: Optional[str],
raw_output: Optional[str],
attempts: int,
error: Optional[str],
judge_provider: str,
judge_model: str,
prompt_version: str,
evaluation_version: str,
) -> None:
if label is None:
return # never cache a failure
with self._lock:
self._conn.execute(
"INSERT OR REPLACE INTO judgements "
"(key, case_id, label, raw_output, attempts, error, judge_provider, "
" judge_model, prompt_version, evaluation_version) "
"VALUES (?,?,?,?,?,?,?,?,?,?)",
(
key,
case_id,
label,
raw_output,
attempts,
error,
judge_provider,
judge_model,
prompt_version,
evaluation_version,
),
)
self._conn.commit()
def close(self) -> None:
with self._lock:
self._conn.close()
def __enter__(self) -> "JudgeCache":
return self
def __exit__(self, *exc) -> None:
self.close()
class NullCache:
"""Cache-shaped no-op used when ``cache: false`` or ``--no-cache``."""
hits = 0
misses = 0
def get(self, key: str) -> None:
return None
def put(self, *args, **kwargs) -> None:
return None
def close(self) -> None:
return None
def __enter__(self) -> "NullCache":
return self
def __exit__(self, *exc) -> None:
return None
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