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fix: add size cap to assistant thread metadata cache

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Prevents unbounded memory growth in _assistant_threads dict.
Evicts oldest entries when exceeding _ASSISTANT_THREADS_MAX (5000),
matching the pattern used by _mentioned_threads and _seen_messages.
This commit is contained in:
Teknium 2026-04-08 22:44:22 -07:00 • committed by Teknium
parent 30a0fcaec8
commit 241bd4fc7e
2 changed files with 29 additions and 0 deletions
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7
gateway/platforms/slack.py
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@ -100,6 +100,7 @@ class SlackAdapter(BasePlatformAdapter):
# events, and they carry the user/thread identity needed for stable
# session + memory scoping.
self._assistant_threads: Dict[Tuple[str, str], Dict[str, str]] = {}
self._ASSISTANT_THREADS_MAX = 5000
async def connect(self) -> bool:
"""Connect to Slack via Socket Mode."""
@ -826,6 +827,12 @@ class SlackAdapter(BasePlatformAdapter):
merged.update({k: v for k, v in metadata.items() if v})
self._assistant_threads[key] = merged
# Evict oldest entries when the cache exceeds the limit
if len(self._assistant_threads) > self._ASSISTANT_THREADS_MAX:
excess = len(self._assistant_threads) - self._ASSISTANT_THREADS_MAX // 2
for old_key in list(self._assistant_threads)[:excess]:
del self._assistant_threads[old_key]
team_id = merged.get("team_id", "")
if team_id and channel_id:
self._channel_team[channel_id] = team_id