22 lines
533 B
Python
22 lines
533 B
Python
import time
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from collections import deque
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from app.sample import Sample
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class HistoryStore:
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def __init__(self, maxlen: int) -> None:
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self._buf: deque[Sample] = deque(maxlen=maxlen)
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def record(self, sample: Sample) -> None:
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sample.ts = time.time()
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self._buf.append(sample)
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def snapshot(self) -> list[Sample]:
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return list(self._buf)
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def latest(self) -> Sample | None:
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return self._buf[-1] if self._buf else None
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def __len__(self) -> int:
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return len(self._buf)
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