OpenStack Study: clean.py

**** CubicPower OpenStack Study ****

def check_length(property_name, value, min_length=1, max_length=64):

    if len(value) < min_length:

        if min_length == 1:

            msg = _("%s cannot be empty.") % property_name

        else:

            msg = (_("%(property_name)s cannot be less than "

                   "%(min_length)s characters.") % dict(

                       property_name=property_name, min_length=min_length))

        raise exception.ValidationError(msg)

    if len(value) > max_length:

        msg = (_("%(property_name)s should not be greater than "

               "%(max_length)s characters.") % dict(

                   property_name=property_name, max_length=max_length))

        raise exception.ValidationError(msg)

**** CubicPower OpenStack Study ****

def check_type(property_name, value, expected_type, display_expected_type):

    if not isinstance(value, expected_type):

        msg = (_("%(property_name)s is not a "

                 "%(display_expected_type)s") % dict(

                     property_name=property_name,

                     display_expected_type=display_expected_type))

        raise exception.ValidationError(msg)

**** CubicPower OpenStack Study ****

def check_enabled(property_name, enabled):

    # Allow int and it's subclass bool

    check_type('%s enabled' % property_name, enabled, int, 'boolean')

    return bool(enabled)

**** CubicPower OpenStack Study ****

def check_name(property_name, name, min_length=1, max_length=64):

    check_type('%s name' % property_name, name, six.string_types,

               'str or unicode')

    name = name.strip()

    check_length('%s name' % property_name, name,

                 min_length=min_length, max_length=max_length)

    return name

**** CubicPower OpenStack Study ****

def domain_name(name):

    return check_name('Domain', name)

**** CubicPower OpenStack Study ****

def project_name(name):

    return check_name('Project', name)

**** CubicPower OpenStack Study ****

def project_enabled(enabled):

    return check_enabled('Project', enabled)

**** CubicPower OpenStack Study ****

def user_name(name):

    return check_name('User', name, max_length=255)

**** CubicPower OpenStack Study ****

def user_enabled(enabled):

    return check_enabled('User', enabled)

**** CubicPower OpenStack Study ****

def group_name(name):

    return check_name('Group', name)