incubator-airflow/airflow/models/errors.py

#
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from sqlalchemy import Column, Integer, String, Text

from airflow.models.base import Base
from airflow.utils.sqlalchemy import UtcDateTime


class ImportError(Base):  # pylint: disable=redefined-builtin
    """
    A table to store all Import Errors. The ImportErrors are recorded when parsing DAGs.
    This errors are displayed on the Webserver.
    """

    __tablename__ = "import_error"
    id = Column(Integer, primary_key=True)
    timestamp = Column(UtcDateTime)
    filename = Column(String(1024))
    stacktrace = Column(Text)