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"""
Serializer code for cobbler
Now adapted to support different storage backends
Copyright 2006-2007, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
This software may be freely redistributed under the terms of the GNU
general public license.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
import errno
import os
from rhpl.translate import _, N_, textdomain, utf8
import yaml # Howell-Clark version
from cexceptions import *
import utils
import api as cobbler_api
import modules.serializer_yaml as serializer_yaml
import ConfigParser
MODULE_CACHE = {}
cp = ConfigParser.ConfigParser()
cp.read("/etc/cobbler/modules.conf")
def serialize(obj):
"""
Save a collection to disk or other storage.
"""
storage_module = __get_storage_module(obj.collection_type())
storage_module.serialize(obj)
return True
def serialize_item(collection, item):
storage_module = __get_storage_module(collection.collection_type())
save_fn = getattr(storage_module, "serialize_item", None)
if save_fn is None:
# print "DEBUG: full serializer"
return storage_module.serialize(collection)
else:
# print "DEBUG: partial serializer"
return save_fn(collection,item)
def serialize_delete(collection, item):
storage_module = __get_storage_module(collection.collection_type())
delete_fn = getattr(storage_module, "serialize_delete", None)
if delete_fn is None:
# print "DEBUG: full delete"
return storage_module.serialize(collection)
else:
# print "DEBUG: partial delete"
return delete_fn(collection,item)
def deserialize(obj,topological=False):
"""
Fill in an empty collection from disk or other storage
"""
storage_module = __get_storage_module(obj.collection_type())
return storage_module.deserialize(obj,topological)
def __get_storage_module(collection_type):
if not MODULE_CACHE.has_key(collection_type):
value = cp.get("serializers",collection_type)
module = cobbler_api.BootAPI().modules[value]
MODULE_CACHE[collection_type] = module
return module
else:
return MODULE_CACHE[collection_type]
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