55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
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from __future__ import annotations
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import time
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import logging
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from yuxi.channel.protocols import DedupeProtocol
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logger = logging.getLogger(__name__)
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class MessageDeduplicator(DedupeProtocol):
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def __init__(self, ttl_seconds: int = 300, max_entries: int = 10000):
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self._seen: dict[str, float] = {}
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self._ttl = ttl_seconds
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self._max_entries = max_entries
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def is_duplicate(self, key: str) -> bool:
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if not key:
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return False
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self._cleanup()
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if key in self._seen:
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return True
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self._seen[key] = time.time()
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if len(self._seen) > self._max_entries:
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sorted_items = sorted(self._seen.items(), key=lambda x: x[1])
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for old_id, _ in sorted_items[: len(self._seen) // 2]:
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del self._seen[old_id]
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return False
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def mark_seen(self, key: str) -> None:
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if key:
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self._seen[key] = time.time()
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def _cleanup(self) -> None:
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now = time.time()
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expired = [k for k, v in self._seen.items() if now - v > self._ttl]
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for k in expired:
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del self._seen[k]
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def reset(self) -> None:
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self._seen.clear()
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@property
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def ttl_seconds(self) -> int:
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return self._ttl
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@property
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def max_entries(self) -> int:
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return self._max_entries
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