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db.py
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db.py
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# -*- coding: utf-8 -*-
#
# 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 airflow.models import (
Connection, DagModel, DagRun, DagTag, Pool, RenderedTaskInstanceFields, SlaMiss, TaskInstance, Variable,
errors,
)
from airflow.models.dagcode import DagCode
from airflow.utils.db import add_default_pool_if_not_exists, create_default_connections, \
create_session
def clear_db_runs():
with create_session() as session:
session.query(DagRun).delete()
session.query(TaskInstance).delete()
def clear_db_dags():
with create_session() as session:
session.query(DagTag).delete()
session.query(DagModel).delete()
def clear_db_sla_miss():
with create_session() as session:
session.query(SlaMiss).delete()
def clear_db_errors():
with create_session() as session:
session.query(errors.ImportError).delete()
def clear_db_pools():
with create_session() as session:
session.query(Pool).delete()
add_default_pool_if_not_exists(session)
def clear_db_connections():
with create_session() as session:
session.query(Connection).delete()
create_default_connections(session)
def clear_db_variables():
with create_session() as session:
session.query(Variable).delete()
def clear_db_dag_code():
with create_session() as session:
session.query(DagCode).delete()
def set_default_pool_slots(slots):
with create_session() as session:
default_pool = Pool.get_default_pool(session)
default_pool.slots = slots
def clear_rendered_ti_fields():
with create_session() as session:
session.query(RenderedTaskInstanceFields).delete()