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33 lines
734 B
Python
33 lines
734 B
Python
"""Fixed-size rolling event log for support diagnostics."""
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from __future__ import annotations
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import threading
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import time
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from collections import deque
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_MAX_SIZE = 50
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_lock = threading.Lock()
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_buffer: deque[dict] = deque(maxlen=_MAX_SIZE)
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def record(label: str, **meta: str | int | float | None) -> None:
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"""Append an entry. Oldest drops when full."""
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with _lock:
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_buffer.append({
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"l": label,
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"t": time.time(),
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**{k: v for k, v in meta.items() if v is not None},
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})
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def snapshot() -> list[dict]:
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"""Return a copy of the current buffer, oldest first."""
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with _lock:
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return list(_buffer)
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def clear() -> None:
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with _lock:
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_buffer.clear()
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