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"""Add ``executor_config`` column to ``task_instance`` table

Revision ID: 33ae817a1ff4
Revises: 947454bf1dff
Create Date: 2017-09-11 15:26:47.598494

"""

import dill
import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = '27c6a30d7c24'
down_revision = '33ae817a1ff4'
branch_labels = None
depends_on = None
airflow_version = '1.10.0'

TASK_INSTANCE_TABLE = "task_instance"
NEW_COLUMN = "executor_config"


def upgrade():
    op.add_column(TASK_INSTANCE_TABLE, sa.Column(NEW_COLUMN, sa.PickleType(pickler=dill)))


def downgrade():
    op.drop_column(TASK_INSTANCE_TABLE, NEW_COLUMN)
