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"""Add ``task_fail`` table

Revision ID: 64de9cddf6c9
Revises: 211e584da130
Create Date: 2016-08-03 14:02:59.203021

"""
import sqlalchemy as sa
from alembic import op

from airflow.migrations.db_types import StringID

# revision identifiers, used by Alembic.
revision = '64de9cddf6c9'
down_revision = '211e584da130'
branch_labels = None
depends_on = None
airflow_version = '1.7.1.3'


def upgrade():
    op.create_table(
        'task_fail',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('task_id', StringID(), nullable=False),
        sa.Column('dag_id', StringID(), nullable=False),
        sa.Column('execution_date', sa.DateTime(), nullable=False),
        sa.Column('start_date', sa.DateTime(), nullable=True),
        sa.Column('end_date', sa.DateTime(), nullable=True),
        sa.Column('duration', sa.Integer(), nullable=True),
        sa.PrimaryKeyConstraint('id'),
    )


def downgrade():
    op.drop_table('task_fail')
