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20671b28c538_change_all_linking_k.py
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20671b28c538_change_all_linking_k.py
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"""change all linking keys from chars to id's
Revision ID: 20671b28c538
Revises: 4c10d97c509
Create Date: 2012-07-07 21:49:21.906150
"""
from __future__ import unicode_literals
# revision identifiers, used by Alembic.
revision = '20671b28c538'
down_revision = '4c10d97c509'
# noinspection PyUnresolvedReferences
from alembic.context import get_context # noqa: F401
from alembic import op # noqa: F401
from magpie.definitions.sqlalchemy_definitions import sa, MySQLDialect, Inspector # noqa: F401
def upgrade():
c = get_context()
insp = Inspector.from_engine(c.connection.engine)
# existing migration
# pre naming convention keys
groups_permissions_pkey = 'groups_permissions_pkey'
groups_pkey = 'groups_pkey'
groups_resources_permissions_pkey = 'groups_resources_permissions_pkey'
users_groups_pkey = 'users_groups_pkey'
users_permissions_pkey = 'users_permissions_pkey'
users_resources_permissions_pkey = 'users_resources_permissions_pkey'
# inspected keys
groups_permissions_pkey = insp.get_pk_constraint('groups_permissions')['name']
groups_pkey = insp.get_pk_constraint('groups')['name']
groups_resources_permissions_pkey = insp.get_pk_constraint('groups_resources_permissions')['name']
users_groups_pkey = insp.get_pk_constraint('users_groups')['name']
users_permissions_pkey = insp.get_pk_constraint('users_permissions')['name']
users_resources_permissions_pkey = insp.get_pk_constraint('users_resources_permissions')['name']
op.drop_constraint('groups_pkey', 'groups', type_='primary')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('groups', sa.Column('id', sa.Integer, primary_key=True,
autoincrement=False))
op.create_primary_key(groups_pkey, 'groups', cols=['id'])
op.alter_column('groups', 'id', type_=sa.Integer,
existing_type=sa.Integer, autoincrement=True,
existing_autoincrement=False, nullable=False)
else:
op.add_column('groups', sa.Column('id', sa.Integer, primary_key=True,
autoincrement=True))
op.create_primary_key(groups_pkey, 'groups', cols=['id'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
for t in ['groups_permissions', 'groups_resources_permissions',
'users_groups']:
for constraint in insp.get_foreign_keys(t):
if constraint['referred_columns'] == ['group_name']:
op.drop_constraint(constraint['name'], t,
type_='foreignkey')
for t in ['users_resources_permissions', 'users_permissions',
'users_groups']:
for constraint in insp.get_foreign_keys(t):
if constraint['referred_columns'] == ['user_name']:
op.drop_constraint(constraint['name'], t,
type_='foreignkey')
for constraint in insp.get_foreign_keys('resources'):
if constraint['referred_columns'] in [['user_name'],
['group_name']]:
op.drop_constraint(constraint['name'], 'resources',
type_='foreignkey')
op.add_column('resources', sa.Column('owner_user_id', sa.Integer(),
sa.ForeignKey('users.id',
onupdate='CASCADE',
ondelete='SET NULL')))
op.add_column('resources', sa.Column('owner_group_id', sa.Integer(),
sa.ForeignKey('groups.id',
onupdate='CASCADE',
ondelete='SET NULL')))
# update the data
op.execute('update resources set owner_user_id = (select id from users where users.user_name=owner_user_name)')
op.execute('update resources set owner_group_id = (select id from users where users.user_name=owner_group_name)')
# mysql is stupid as usual so we cant create FKEY and add PKEY later,
# need to set PKEY first and then set FKEY
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('groups_permissions', sa.Column('group_id', sa.Integer()))
else:
op.add_column('groups_permissions', sa.Column('group_id', sa.Integer(),
sa.ForeignKey('groups.id',
onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update groups_permissions set group_id =
(select id from groups where groups.group_name=groups_permissions.group_name)''')
op.drop_constraint(groups_permissions_pkey, 'groups_permissions',
type_='primary')
op.create_primary_key(groups_permissions_pkey, 'groups_permissions',
cols=['group_id', 'perm_name'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.create_foreign_key(None, 'groups_permissions', 'groups',
remote_cols=['id'],
local_cols=['group_id'], onupdate='CASCADE',
ondelete='CASCADE')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('groups_resources_permissions',
sa.Column('group_id', sa.Integer()))
else:
op.add_column('groups_resources_permissions',
sa.Column('group_id', sa.Integer(),
sa.ForeignKey('groups.id', onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update groups_resources_permissions set group_id =
(select id from groups where groups.group_name=groups_resources_permissions.group_name)''')
op.drop_constraint(groups_resources_permissions_pkey,
'groups_resources_permissions',
type_='primary')
op.create_primary_key(groups_resources_permissions_pkey,
'groups_resources_permissions',
cols=['group_id', 'resource_id', 'perm_name'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.create_foreign_key(None, 'groups_resources_permissions', 'groups',
remote_cols=['id'],
local_cols=['group_id'], onupdate='CASCADE',
ondelete='CASCADE')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('users_groups', sa.Column('group_id', sa.Integer()))
else:
op.add_column('users_groups', sa.Column('group_id', sa.Integer(),
sa.ForeignKey('groups.id',
onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update users_groups set group_id =
(select id from groups where groups.group_name=users_groups.group_name)''')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('users_groups', sa.Column('user_id', sa.Integer()))
else:
op.add_column('users_groups', sa.Column('user_id', sa.Integer(),
sa.ForeignKey('users.id',
onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update users_groups set user_id =
(select id from users where users.user_name=users_groups.user_name)''')
op.drop_constraint(users_groups_pkey, 'users_groups', type='primary')
op.create_primary_key(users_groups_pkey, 'users_groups',
cols=['user_id', 'group_id'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.create_foreign_key(None, 'users_groups', 'groups',
remote_cols=['id'],
local_cols=['group_id'], onupdate='CASCADE',
ondelete='CASCADE')
op.create_foreign_key(None, 'users_groups', 'users',
remote_cols=['id'],
local_cols=['user_id'], onupdate='CASCADE',
ondelete='CASCADE')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('users_permissions', sa.Column('user_id', sa.Integer()))
else:
op.add_column('users_permissions', sa.Column('user_id', sa.Integer(),
sa.ForeignKey('users.id',
onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update users_permissions set user_id =
(select id from groups where groups.group_name=users_permissions.user_name)''')
op.drop_constraint(users_permissions_pkey, 'users_permissions',
type='primary')
op.create_primary_key(users_permissions_pkey, 'users_permissions',
cols=['user_id', 'perm_name'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.create_foreign_key(None, 'users_permissions', 'users',
remote_cols=['id'],
local_cols=['user_id'], onupdate='CASCADE',
ondelete='CASCADE')
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.add_column('users_resources_permissions',
sa.Column('user_id', sa.Integer()))
else:
op.add_column('users_resources_permissions',
sa.Column('user_id', sa.Integer(),
sa.ForeignKey('users.id', onupdate='CASCADE',
ondelete='CASCADE')))
op.execute('''
update users_resources_permissions set user_id =
(select id from users where users.user_name=users_resources_permissions.user_name)''')
op.drop_constraint(users_resources_permissions_pkey,
'users_resources_permissions',
type='primary')
op.create_primary_key(users_resources_permissions_pkey,
'users_resources_permissions',
cols=['user_id', 'resource_id', 'perm_name'])
if isinstance(c.connection.engine.dialect, MySQLDialect):
op.create_foreign_key(None, 'users_resources_permissions', 'users',
remote_cols=['id'],
local_cols=['user_id'], onupdate='CASCADE',
ondelete='CASCADE')
op.drop_column('resources', 'owner_user_name')
op.drop_column('resources', 'owner_group_name')
op.drop_column('groups_permissions', 'group_name')
op.drop_column('groups_resources_permissions', 'group_name')
op.drop_column('users_resources_permissions', 'user_name')
op.drop_column('users_groups', 'group_name')
op.drop_column('users_groups', 'user_name')
op.drop_column('users_permissions', 'user_name')
def downgrade():
pass