/usr/share/pyshared/cobbler/modules/serializer_couch.py is in python-cobbler 2.2.2-0ubuntu33.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | """
Serializer code for cobbler.
Experimental: couchdb version
Copyright 2006-2009, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
"""
import distutils.sysconfig
import os
import sys
import glob
import traceback
import yaml # PyYAML
import simplejson
import exceptions
plib = distutils.sysconfig.get_python_lib()
mod_path="%s/cobbler" % plib
sys.path.insert(0, mod_path)
from utils import _
import utils
from cexceptions import *
import os
import couch
typez = [ "distro", "profile", "system", "image", "repo" ]
couchdb = couch.Couch('127.0.0.1')
def __connect():
couchdb.connect()
for x in typez:
couchdb.createDb(x)
def register():
"""
The mandatory cobbler module registration hook.
"""
# FIXME: only run this if enabled.
return "serializer"
def what():
"""
Module identification function
"""
return "serializer/couchdb"
def serialize_item(obj, item):
__connect()
datastruct = item.to_datastruct()
# blindly prevent conflict resolution
couchdb.openDoc(obj.collection_type(), item.name)
data = couchdb.saveDoc(obj.collection_type(),
simplejson.dumps(datastruct, encoding="utf-8"),
item.name)
data = simplejson.loads(data)
return True
def serialize_delete(obj, item):
__connect()
couchdb.deleteDoc(obj.collection_type(),
item.name)
return True
def deserialize_item_raw(collection_type, item_name):
__connect()
data = couchdb.openDoc(collection_type, item_name)
return simplejson.loads(data, encoding="utf-8")
def serialize(obj):
"""
Save an object to disk. Object must "implement" Serializable.
FIXME: Return False on access/permission errors.
This should NOT be used by API if serialize_item is available.
"""
__connect()
ctype = obj.collection_type()
if ctype == "settings":
return True
for x in obj:
serialize_item(obj,x)
return True
def deserialize_raw(collection_type):
__connect()
contents = simplejson.loads(couchdb.listDoc(collection_type))
items = []
if contents.has_key("error") and contents.get("reason","").find("Missing") != -1:
# no items in the DB yet
return []
for x in contents["rows"]:
items.append(x["key"])
if collection_type == "settings":
fd = open("/etc/cobbler/settings")
datastruct = yaml.safe_load(fd.read())
fd.close()
return datastruct
else:
results = []
for f in items:
data = couchdb.openDoc(collection_type, f)
datastruct = simplejson.loads(data, encoding='utf-8')
results.append(datastruct)
return results
def deserialize(obj,topological=True):
"""
Populate an existing object with the contents of datastruct.
Object must "implement" Serializable.
"""
__connect()
datastruct = deserialize_raw(obj.collection_type())
if topological and type(datastruct) == list:
datastruct.sort(__depth_cmp)
obj.from_datastruct(datastruct)
return True
def __depth_cmp(item1, item2):
d1 = item1.get("depth",1)
d2 = item2.get("depth",1)
return cmp(d1,d2)
if __name__ == "__main__":
print deserialize_item_raw("distro","D1")
|