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'''This module sets up a base list of configuration entries'''
__revision__ = '$Revision$'
from copy import deepcopy
from elementtree.ElementTree import Element, XML
from xml.parsers.expat import ExpatError
from Bcfg2.Server.Plugin import Plugin, PluginInitError, SingleXMLFileBacked
class Base(Plugin, SingleXMLFileBacked):
'''This Structure is good for the pile of independent configs needed for most actual systems'''
__name__ = 'Base'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
'''base creates independent clauses based on client metadata'''
def __init__(self, core, datastore):
Plugin.__init__(self, core, datastore)
self.store = {'all':[], 'Class':{'all':[]}, 'Image':{'all':[]}, 'all':[]}
try:
SingleXMLFileBacked.__init__(self, "%s/etc/base.xml"%(datastore), self.core.fam)
except OSError:
self.LogError("Failed to load base.xml")
raise PluginInitError
def Index(self):
'''Store XML data in reasonable structures'''
try:
xdata = XML(self.data)
except ExpatError:
self.LogError("Failed to parse base.xml")
return
for entry in xdata.getchildren():
if entry.tag in ['Image', 'Class']:
if not self.store[entry.tag].has_key(entry.get('name')):
self.store[entry.tag][entry.get('name')] = {'all':[], 'Class':{}, 'Image':{}}
for child in entry.getchildren():
if child.tag in ['Image', 'Class']:
self.store[entry.tag][entry.get('name')][child.tag][child.get('name')] = child.getchildren()
else:
self.store[entry.tag][entry.get('name')]['all'].append(child)
else:
self.store['all'].append(child)
def BuildStructures(self, metadata):
'''Build structures for client described by metadata'''
ret = Element("Independant", version='2.0')
[ret.append(deepcopy(entry)) for entry in self.store['all']]
idata = self.store['Image'].get(metadata.image, {'all':[], 'Class':{}})
for entry in idata['all']:
ret.append(deepcopy(entry))
for cls in metadata.classes:
for entry in idata['Class'].get(cls, []):
ret.append(deepcopy(entry))
cdata = self.store['Class'].get(cls, {'all':[], 'Image':{}})
for entry in cdata['all']:
ret.append(deepcopy(entry))
for entry in cdata['Image'].get(metadata.image, []):
ret.append(deepcopy(entry))
return [ret]
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