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from sqlalchemy import Boolean, Column, String, Index, Text
from airflow.models.base import Base, ID_LEN
from airflow.utils.sqlalchemy import UtcDateTime
Model that stores a history of the SLA that have been missed.
It is used to keep track of SLA failures over time and to avoid double
triggering alert emails.
[docs] __tablename__ = "sla_miss"
[docs] task_id = Column(String(ID_LEN), primary_key=True)
[docs] dag_id = Column(String(ID_LEN), primary_key=True)
[docs] execution_date = Column(UtcDateTime, primary_key=True)
[docs] email_sent = Column(Boolean, default=False)
[docs] timestamp = Column(UtcDateTime)
[docs] description = Column(Text)
[docs] notification_sent = Column(Boolean, default=False)
[docs] __table_args__ = (
Index('sm_dag', dag_id, unique=False),
[docs] def __repr__(self):
self.dag_id, self.task_id, self.execution_date.isoformat()))