"""drop_useless_enum

Revision ID: 2e0b912062d1
Revises: 34c517bcc2dd
Create Date: 2016-04-15 07:29:38.492237

"""

from alembic import op


# revision identifiers, used by Alembic.
revision = '2e0b912062d1'
down_revision = '34c517bcc2dd'
branch_labels = None
depends_on = None


def upgrade():
    bind = op.get_bind()
    if bind and bind.engine.name == "postgresql":
        # NOTE(sileht): we use IF exists because if the database have
        # been created from scratch with 2.1 the enum doesn't exists
        op.execute("DROP TYPE IF EXISTS resource_type_enum")
