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from sqlalchemy import Column, Index, Integer, String
from airflow.models.base import Base, ID_LEN
from airflow.utils.sqlalchemy import UtcDateTime
[docs]class TaskFail(Base):
"""
TaskFail tracks the failed run durations of each task instance.
"""
[docs] __tablename__ = "task_fail"
[docs] id = Column(Integer, primary_key=True)
[docs] task_id = Column(String(ID_LEN), nullable=False)
[docs] dag_id = Column(String(ID_LEN), nullable=False)
[docs] execution_date = Column(UtcDateTime, nullable=False)
[docs] start_date = Column(UtcDateTime)
[docs] end_date = Column(UtcDateTime)
[docs] duration = Column(Integer)
[docs] __table_args__ = (
Index('idx_task_fail_dag_task_date', dag_id, task_id, execution_date,
unique=False),
)
def __init__(self, task, execution_date, start_date, end_date):
self.dag_id = task.dag_id
self.task_id = task.task_id
self.execution_date = execution_date
self.start_date = start_date
self.end_date = end_date
if self.end_date and self.start_date:
self.duration = int((self.end_date - self.start_date).total_seconds())
else:
self.duration = None