#
# 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.

"""Add fractional seconds to mysql tables

Revision ID: 4addfa1236f1
Revises: f2ca10b85618
Create Date: 2016-09-11 13:39:18.592072

"""

# revision identifiers, used by Alembic.
revision = '4addfa1236f1'
down_revision = 'f2ca10b85618'
branch_labels = None
depends_on = None

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql
from alembic import context


def upgrade():
    if context.config.get_main_option('sqlalchemy.url').startswith('mysql'):
        op.alter_column(table_name='dag', column_name='last_scheduler_run', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag', column_name='last_pickled', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag', column_name='last_expired', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='dag_pickle', column_name='created_dttm', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='dag_run', column_name='execution_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag_run', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag_run', column_name='end_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='import_error', column_name='timestamp', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='job', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='job', column_name='end_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='job', column_name='latest_heartbeat', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='known_event', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='known_event', column_name='end_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='log', column_name='dttm', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='log', column_name='execution_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='sla_miss', column_name='execution_date', type_=mysql.DATETIME(fsp=6), nullable=False)
        op.alter_column(table_name='sla_miss', column_name='timestamp', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='task_fail', column_name='execution_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_fail', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_fail', column_name='end_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='task_instance', column_name='execution_date', type_=mysql.DATETIME(fsp=6), nullable=False)
        op.alter_column(table_name='task_instance', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_instance', column_name='end_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_instance', column_name='queued_dttm', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='xcom', column_name='timestamp', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='xcom', column_name='execution_date', type_=mysql.DATETIME(fsp=6))


def downgrade():
    if context.config.get_main_option('sqlalchemy.url').startswith('mysql'):
        op.alter_column(table_name='dag', column_name='last_scheduler_run', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_pickled', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_expired', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_pickle', column_name='created_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_run', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='import_error', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='job', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='latest_heartbeat', type_=mysql.DATETIME())

        op.alter_column(table_name='known_event', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='known_event', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='log', column_name='dttm', type_=mysql.DATETIME())
        op.alter_column(table_name='log', column_name='execution_date', type_=mysql.DATETIME())

        op.alter_column(table_name='sla_miss', column_name='execution_date', type_=mysql.DATETIME(), nullable=False)
        op.alter_column(table_name='sla_miss', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='task_fail', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='task_instance', column_name='execution_date', type_=mysql.DATETIME(), nullable=False)
        op.alter_column(table_name='task_instance', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='queued_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='xcom', column_name='timestamp', type_=mysql.DATETIME())
        op.alter_column(table_name='xcom', column_name='execution_date', type_=mysql.DATETIME())
