# -*- coding: utf-8 -*-
#
# Licensed 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.

"""dagrun start end

Revision ID: 4446e08588
Revises: 561833c1c74b
Create Date: 2015-12-10 11:26:18.439223

"""

# revision identifiers, used by Alembic.
revision = '4446e08588'
down_revision = '561833c1c74b'
branch_labels = None
depends_on = None

from alembic import op
import sqlalchemy as sa


def upgrade():
    op.add_column('dag_run', sa.Column('end_date', sa.DateTime(), nullable=True))
    op.add_column('dag_run', sa.Column('start_date', sa.DateTime(), nullable=True))


def downgrade():
    op.drop_column('dag_run', 'start_date')
    op.drop_column('dag_run', 'end_date')
