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# vi: ts=4 expandtab
#
# Copyright (C) 2008-2010 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Chuck Short <chuck.short@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# 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/>.
#
from cloudinit.settings import (PER_INSTANCE, FREQUENCIES)
from cloudinit import log as logging
LOG = logging.getLogger(__name__)
# TODO remove this from being a prefix??
TRANSFORM_PREFIX = '' # "cc_"
def form_transform_name(name, mod=__name__):
canon_name = name.replace("-", "_")
if canon_name.lower().endswith(".py"):
canon_name = canon_name[0:(len(canon_name) - 3)]
canon_name = canon_name.strip()
if not canon_name:
return None
if not canon_name.startswith(TRANSFORM_PREFIX):
canon_name = '%s%s' % (TRANSFORM_PREFIX, canon_name)
return ".".join([str(mod), str(canon_name)])
def fixup_transform(mod, def_freq=PER_INSTANCE):
if not hasattr(mod, 'frequency'):
setattr(mod, 'frequency', def_freq)
else:
freq = mod.frequency
if freq and freq not in FREQUENCIES:
LOG.warn("Transform %s has an unknown frequency %s", mod, freq)
if not hasattr(mod, 'handle'):
def empty_handle(_name, _cfg, _cloud, _log, _args):
pass
setattr(mod, 'handle', empty_handle)
if not hasattr(mod, 'distros'):
setattr(mod, 'distros', None)
return mod
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