Source code for airflow.models.log

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

from sqlalchemy import Column, Index, Integer, String, Text, text

from airflow.models.base import Base, StringID
from airflow.utils import timezone
from airflow.utils.sqlalchemy import UtcDateTime



[docs]class Log(Base):
    """Used to actively log events to the database"""


[docs]    __tablename__ = "log"



[docs]    id = Column(Integer, primary_key=True)


[docs]    dttm = Column(UtcDateTime)


[docs]    dag_id = Column(StringID())


[docs]    task_id = Column(StringID())


[docs]    map_index = Column(Integer, server_default=text('NULL'))


[docs]    event = Column(String(30))


[docs]    execution_date = Column(UtcDateTime)


[docs]    owner = Column(String(500))


[docs]    extra = Column(Text)



[docs]    __table_args__ = (Index('idx_log_dag', dag_id),)


    def __init__(self, event, task_instance=None, owner=None, extra=None, **kwargs):
        self.dttm = timezone.utcnow()
        self.event = event
        self.extra = extra

        task_owner = None

        if task_instance:
            self.dag_id = task_instance.dag_id
            self.task_id = task_instance.task_id
            self.execution_date = task_instance.execution_date
            self.map_index = task_instance.map_index
            task_owner = task_instance.task.owner

        if 'task_id' in kwargs:
            self.task_id = kwargs['task_id']
        if 'dag_id' in kwargs:
            self.dag_id = kwargs['dag_id']
        if kwargs.get('execution_date'):
            self.execution_date = kwargs['execution_date']
        if 'map_index' in kwargs:
            self.map_index = kwargs['map_index']

        self.owner = owner or task_owner

Was this entry helpful?