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"""update_identify_by
Revision ID: 3772f8f828da
Revises: c7a44a5a0851
Create Date: 2016-08-11 10:47:29.211063
"""
# revision identifiers, used by Alembic.
revision = '3772f8f828da'
down_revision = 'c7a44a5a0851'
from alembic import op
import sqlalchemy as sa
def enum_update(table_name, column_name, enum_name, enum_values):
if op.get_context().bind.dialect.name != 'postgresql':
op.alter_column(table_name, column_name,
type_=sa.Enum(*enum_values, name=enum_name))
return
# Postgres requires a few more steps
tmp = enum_name + '_tmp'
op.execute('ALTER TYPE ' + enum_name + ' RENAME TO ' + tmp)
updated = sa.Enum(*enum_values, name=enum_name)
updated.create(op.get_bind(), checkfirst=False)
op.execute('ALTER TABLE ' + table_name + ' ALTER COLUMN ' + column_name +
' TYPE ' + enum_name + ' USING identify_by::text::' + enum_name)
op.execute('DROP TYPE ' + tmp)
def upgrade():
enum_update('ps_endpoints', 'identify_by', 'pjsip_identify_by_values',
['username', 'auth_username'])
def downgrade():
enum_update('ps_endpoints', 'identify_by', 'pjsip_identify_by_values',
['username'])
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