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# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008 Red Hat
# see file 'COPYING' for use and warranty inmsgion
#
# 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; version 2 only
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
All custom exceptions raised by `ipalib` package.
"""
class IPAError(Exception):
"""
Use this base class for your custom IPA exceptions unless there is a
specific reason to subclass from AttributeError, KeyError, etc.
"""
msg = None
def __init__(self, *args, **kw):
self.args = args
self.kw = kw
def __str__(self):
"""
Returns the string representation of this exception.
"""
if self.msg is None:
if len(self.args) == 1:
return unicode(self.args[0])
return unicode(self.args)
if len(self.args) > 0:
return self.msg % self.args
return self.msg % self.kw
class SetError(IPAError):
msg = 'setting %r, but NameSpace does not allow attribute setting'
class RegistrationError(IPAError):
"""
Base class for errors that occur during plugin registration.
"""
class SubclassError(RegistrationError):
"""
Raised when registering a plugin that is not a subclass of one of the
allowed bases.
"""
msg = 'plugin %r not subclass of any base in %r'
def __init__(self, cls, allowed):
self.cls = cls
self.allowed = allowed
def __str__(self):
return self.msg % (self.cls, self.allowed)
class DuplicateError(RegistrationError):
"""
Raised when registering a plugin whose exact class has already been
registered.
"""
msg = '%r at %d was already registered'
def __init__(self, cls):
self.cls = cls
def __str__(self):
return self.msg % (self.cls, id(self.cls))
class OverrideError(RegistrationError):
"""
Raised when override=False yet registering a plugin that overrides an
existing plugin in the same namespace.
"""
msg = 'unexpected override of %s.%s with %r (use override=True if intended)'
def __init__(self, base, cls):
self.base = base
self.cls = cls
def __str__(self):
return self.msg % (self.base.__name__, self.cls.__name__, self.cls)
class MissingOverrideError(RegistrationError):
"""
Raised when override=True yet no preexisting plugin with the same name
and base has been registered.
"""
msg = '%s.%s has not been registered, cannot override with %r'
def __init__(self, base, cls):
self.base = base
self.cls = cls
def __str__(self):
return self.msg % (self.base.__name__, self.cls.__name__, self.cls)
class TwiceSetError(IPAError):
msg = '%s.%s cannot be set twice'
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