33 lines
1.5 KiB
Python
33 lines
1.5 KiB
Python
from datetime import datetime
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from sqlalchemy import BigInteger, Boolean, Column, DateTime, Float, Index, Integer, String
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from .device import Base
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PRIMARY_KEY_TYPE = BigInteger().with_variant(Integer, "sqlite")
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class PingRecord(Base):
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"""单次 ping 结果记录"""
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__tablename__ = "ping_records"
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id = Column(PRIMARY_KEY_TYPE, primary_key=True, autoincrement=True)
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device_id = Column(Integer, nullable=False, index=True)
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is_alive = Column(Boolean, nullable=False, comment="是否通")
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response_time_ms = Column(Float, nullable=True, comment="响应时间毫秒，不通则为 NULL")
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round_num = Column(Integer, nullable=False, comment="轮次编号（从 1 递增）")
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created_at = Column(DateTime, default=datetime.now, index=True, comment="记录时间")
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sent_count = Column(Integer, nullable=True, comment="本轮发包数")
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received_count = Column(Integer, nullable=True, comment="本轮收包数")
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packet_loss_percent = Column(Float, nullable=True, comment="本轮丢包率百分比")
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average_rtt_ms = Column(Float, nullable=True, comment="本轮平均时延毫秒")
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is_valid = Column(Boolean, nullable=False, default=True, comment="探测结果是否有效")
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failure_reason = Column(String(512), nullable=True, comment="无效探测的原因")
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__table_args__ = (
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Index("idx_ping_records_device_created_at", "device_id", "created_at"),
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)
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def __repr__(self):
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return f"<PingRecord(device={self.device_id}, alive={self.is_alive}, rtt={self.response_time_ms})>"
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