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fix: don't fail if cache is corrupted #7728

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fix: don't fail if cache is corrupted #7728

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14 changes: 13 additions & 1 deletion src/poetry/utils/cache.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
import dataclasses
import hashlib
import json
import logging
import shutil
import time

Expand All @@ -23,6 +24,7 @@

from poetry.utils.env import Env

logger = logging.getLogger(__name__)

# Used by Cachy for items that do not expire.
MAX_DATE = 9999999999
Expand Down Expand Up @@ -182,7 +184,17 @@ def _get_payload(self, key: str) -> T | None:
return None

with open(path, "rb") as f:
payload = self._deserialize(f.read())
try:
payload = self._deserialize(f.read())
except json.JSONDecodeError as exc:
logger.warning(
"Invalid cache entry (%s) found in %s: %s",
key,
path,
str(exc),
)
self.forget(key)
return None

if payload.expired:
self.forget(key)
Expand Down