47 lines
2.0 KiB
Python
47 lines
2.0 KiB
Python
import enum
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from datetime import datetime
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from sqlalchemy import BigInteger, Boolean, Column, DateTime, Enum, 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 AlertTypeEnum(str, enum.Enum):
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offline = "offline" # 设备离线
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degraded = "degraded" # 设备丢包故障
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recovered = "recovered" # 设备恢复
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system = "system" # 系统告警（如上游断网检测）
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class AlertEvent(Base):
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"""告警事件表"""
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__tablename__ = "alert_events"
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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, comment="关联设备 ID")
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alert_type = Column(Enum(AlertTypeEnum), nullable=False, comment="告警类型")
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message = Column(String(1024), default="", comment="告警消息摘要")
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# 离线起止
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start_at = Column(DateTime, nullable=False, comment="离线开始时间")
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end_at = Column(DateTime, nullable=True, comment="恢复时间")
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duration_minutes = Column(Integer, nullable=True, comment="离线时长（分钟）")
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is_resolved = Column(Boolean, default=False, comment="是否已恢复")
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notification_sent = Column(Boolean, default=False, comment="是否已发送通知")
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notification_attempts = Column(Integer, default=0, comment="通知尝试次数")
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last_notification_error = Column(
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String(512),
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nullable=True,
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comment="最近一次通知失败原因",
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)
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previous_status = Column(String(16), nullable=True, comment="状态变更前状态")
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current_status = Column(String(16), nullable=True, comment="状态变更后状态")
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acknowledged_at = Column(DateTime, nullable=True, comment="用户确认时间")
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created_at = Column(DateTime, default=datetime.now, comment="创建时间")
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def __repr__(self):
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return f"<AlertEvent(id={self.id}, device={self.device_id}, type={self.alert_type})>"
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