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#!/usr/bin/python
#============================================================================
# This library is free software; you can redistribute it and/or
# modify it under the terms of version 2.1 of the GNU Lesser General Public
# License as published by the Free Software Foundation.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#============================================================================
# Copyright (C) 2006 XenSource Ltd.
#============================================================================
#
# Representation of a Xen API VDI
#
import os
from xen.util.xmlrpclib2 import stringify
from xmlrpclib import dumps, loads
from xen.util import security, xsconstants
from xen.xend.XendError import SecurityError
KB = 1024
MB = 1024 * 1024
class AutoSaveObject(object):
def __init__(self):
self.cfg_path = None
self.auto_save = True
object
def save_config(self, cfg_file = None):
raise NotImplementedError()
def __setattr__(self, name, value):
"""A very simple way of making sure all attribute changes are
flushed to disk.
"""
object.__setattr__(self, name, value)
if name != 'auto_save' and getattr(self, 'auto_save', False):
self.save_config()
class XendVDI(AutoSaveObject):
"""Generic Xen API compatible VDI representation.
@cvar SAVED_CFG: list of configuration attributes to save.
@cvar SAVED_CFG_INT: list of configurations that should be ints.
"""
SAVED_CFG = ['name_label',
'name_description',
'virtual_size',
'physical_utilisation',
'sharable',
'read_only']
SAVED_CFG_INT = ['sector_size', 'virtual_size', 'physical_utilisation']
def __init__(self, uuid, sr_uuid):
self.uuid = uuid
self.sr_uuid = sr_uuid
self.name_label = ""
self.name_description = ""
self.virtual_size = 0
self.physical_utilisation = 0
self.sharable = False
self.read_only = False
self.type = "system"
self.other_config = {}
self.vbds = []
def addVBD(self, vbd_ref):
self.vbds.append(vbd_ref)
def removeVBD(self, vbd_ref):
self.vbds.remove(vbd_ref)
def getVBDs(self):
return self.vbds
def load_config_dict(self, cfg):
"""Loads configuration into the object from a dict.
@param cfg: configuration dict
@type cfg: dict
"""
self.auto_save = False
for key in self.SAVED_CFG:
if key in cfg:
if key in self.SAVED_CFG_INT:
setattr(self, key, int(cfg[key]))
else:
setattr(self, key, cfg[key])
self.auto_save = True
def load_config(self, cfg_path):
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