airbnb/caravel

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#   http://www.apache.org/licenses/LICENSE-2.0
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"""Add verbose name to DruidCluster and Database

Revision ID: db527d8c4c78
Revises: b318dfe5fb6c
Create Date: 2017-03-16 18:10:57.193035

"""

# revision identifiers, used by Alembic.
revision = "db527d8c4c78"
down_revision = "b318dfe5fb6c"

import logging  # noqa: E402

import sqlalchemy as sa  # noqa: E402
from alembic import op  # noqa: E402


def upgrade():
    op.add_column(
        "clusters", sa.Column("verbose_name", sa.String(length=250), nullable=True)
    )
    op.add_column(
        "dbs", sa.Column("verbose_name", sa.String(length=250), nullable=True)
    )

    try:
        op.create_unique_constraint(None, "dbs", ["verbose_name"])
        op.create_unique_constraint(None, "clusters", ["verbose_name"])
    except Exception:
        logging.info("Constraint not created, expected when using sqlite")


def downgrade():
    try:
        op.drop_column("dbs", "verbose_name")
        op.drop_column("clusters", "verbose_name")
    except Exception as ex:
        logging.exception(ex)