pylorax.decorators — Lorax 28.14.42 documentation

# Source code for pylorax.decorators

    #
    # decorators.py
    #
    # Copyright (C) 2009-2015 Red Hat, Inc.
    #
    # This program is free software; you can redistribute it and/or modify
    # it under the terms of the GNU General Public License as published by
    # the Free Software Foundation; either version 2 of the License, or
    # (at your option) any later version.
    #
    # This program is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # GNU General Public License for more details.
    #
    # You should have received a copy of the GNU General Public License
    # along with this program.  If not, see <http://www.gnu.org/licenses/>.
    #
    # Red Hat Author(s):  Martin Gracik <mgracik@redhat.com>
    #

    def singleton(cls):
        instances = {}

        def get_instance():
            if cls not in instances:
                instances[cls] = cls()
            return instances[cls]

        return get_instance