def upgrade(migrate_engine):

    """ Upgrade operations go here.

    Don't create your own engine; bind migrate_engine to your metadata

    """

    #==========================================================================

    # Add table `groups``

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import RepoGroup as Group

    Group().__table__.create()

    #==========================================================================

    # Add table `group_to_perm`

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UserRepoGroupToPerm

    UserRepoGroupToPerm().__table__.create()

    #==========================================================================

    # Add table `users_groups`

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UsersGroup

    UsersGroup().__table__.create()

    #==========================================================================

    # Add table `users_groups_members`

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UsersGroupMember

    UsersGroupMember().__table__.create()

    #==========================================================================

    # Add table `users_group_repo_to_perm`

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UsersGroupRepoToPerm

    UsersGroupRepoToPerm().__table__.create()

    #==========================================================================

    # Add table `users_group_to_perm`

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UsersGroupToPerm

    UsersGroupToPerm().__table__.create()

    #==========================================================================

    # Upgrade of `users` table

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import User

    #add column

    ldap_dn.create(User().__table__)

    api_key = Column("api_key", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)

    api_key.create(User().__table__)

    #remove old column

    is_ldap = Column("is_ldap", Boolean(), nullable=False, unique=None, default=False)

    is_ldap.drop(User().__table__)

    #==========================================================================

    # Upgrade of `repositories` table

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import Repository

    #ADD clone_uri column#

    clone_uri = Column("clone_uri", String(length=255, convert_unicode=False,

                                           assert_unicode=None),

                        nullable=True, unique=False, default=None)

    clone_uri.create(Repository().__table__)

    #ADD downloads column#

    enable_downloads = Column("downloads", Boolean(), nullable=True, unique=None, default=True)

    enable_downloads.create(Repository().__table__)

    #ADD column created_on

    created_on = Column('created_on', DateTime(timezone=False), nullable=True,

                        unique=None, default=datetime.datetime.now)

    created_on.create(Repository().__table__)

    #ADD group_id column#

    group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'),

                  nullable=True, unique=False, default=None)

    group_id.create(Repository().__table__)

    #==========================================================================

    # Upgrade of `user_followings` table

    #==========================================================================

    from rhodecode.lib.dbmigrate.schema.db_1_2_0 import UserFollowing

    follows_from = Column('follows_from', DateTime(timezone=False), 

                          nullable=True, unique=None, 

                          default=datetime.datetime.now)