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import lxml.etree
import os
import Bcfg2.Server.Admin
class Compare(Bcfg2.Server.Admin.Mode):
""" Determine differences between files or directories of client
specification instances """
__usage__ = ("<old> <new>\n\n"
" -r\trecursive")
def __init__(self, setup):
Bcfg2.Server.Admin.Mode.__init__(self, setup)
self.important = {'Path': ['name', 'type', 'owner', 'group', 'mode',
'important', 'paranoid', 'sensitive',
'dev_type', 'major', 'minor', 'prune',
'encoding', 'empty', 'to', 'recursive',
'vcstype', 'sourceurl', 'revision',
'secontext'],
'Package': ['name', 'type', 'version', 'simplefile',
'verify'],
'Service': ['name', 'type', 'status', 'mode',
'target', 'sequence', 'parameters'],
'Action': ['name', 'timing', 'when', 'status',
'command'],
'PostInstall': ['name']
}
def compareStructures(self, new, old):
if new.tag == 'Independent':
bundle = 'Base'
else:
bundle = new.get('name')
identical = True
for child in new.getchildren():
if child.tag not in self.important:
print(" %s in (new) bundle %s:\n tag type not handled!" %
(child.tag, bundle))
continue
equiv = old.xpath('%s[@name="%s"]' %
(child.tag, child.get('name')))
if len(equiv) == 0:
print(" %s %s in bundle %s:\n only in new configuration" %
(child.tag, child.get('name'), bundle))
identical = False
continue
diff = []
if child.tag == 'Path' and child.get('type') == 'file' and \
child.text != equiv[0].text:
diff.append('contents')
attrdiff = [field for field in self.important[child.tag] if \
child.get(field) != equiv[0].get(field)]
if attrdiff:
diff.append('attributes (%s)' % ', '.join(attrdiff))
if diff:
print(" %s %s in bundle %s:\n %s differ" % (child.tag, \
child.get('name'), bundle, ' and '.join(diff)))
identical = False
for child in old.getchildren():
if child.tag not in self.important:
print(" %s in (old) bundle %s:\n tag type not handled!" %
(child.tag, bundle))
elif len(new.xpath('%s[@name="%s"]' %
(child.tag, child.get('name')))) == 0:
print(" %s %s in bundle %s:\n only in old configuration" %
(child.tag, child.get('name'), bundle))
identical = False
return identical
def compareSpecifications(self, path1, path2):
try:
new = lxml.etree.parse(path1).getroot()
except IOError:
print("Failed to read %s" % (path1))
raise SystemExit(1)
try:
old = lxml.etree.parse(path2).getroot()
except IOError:
print("Failed to read %s" % (path2))
raise SystemExit(1)
for src in [new, old]:
for bundle in src.findall('./Bundle'):
if bundle.get('name')[-4:] == '.xml':
bundle.set('name', bundle.get('name')[:-4])
identical = True
for bundle in old.findall('./Bundle'):
if len(new.xpath('Bundle[@name="%s"]' % (bundle.get('name')))) == 0:
print(" Bundle %s only in old configuration" %
bundle.get('name'))
identical = False
for bundle in new.findall('./Bundle'):
equiv = old.xpath('Bundle[@name="%s"]' % (bundle.get('name')))
if len(equiv) == 0:
print(" Bundle %s only in new configuration" %
bundle.get('name'))
identical = False
elif not self.compareStructures(bundle, equiv[0]):
identical = False
i1 = lxml.etree.Element('Independent')
i2 = lxml.etree.Element('Independent')
i1.extend(new.findall('./Independent/*'))
i2.extend(old.findall('./Independent/*'))
if not self.compareStructures(i1, i2):
identical = False
return identical
def __call__(self, args):
if len(args) == 0:
self.errExit("No argument specified.\n"
"Please see bcfg2-admin compare help for usage.")
if '-r' in args:
args = list(args)
args.remove('-r')
(oldd, newd) = args
(old, new) = [os.listdir(spot) for spot in args]
old_extra = []
for item in old:
if item not in new:
old_extra.append(item)
continue
print("File: %s" % item)
state = self.__call__([oldd + '/' + item, newd + '/' + item])
new.remove(item)
if state:
print("File %s is good" % item)
else:
print("File %s is bad" % item)
if new:
print("%s has extra files: %s" % (newd, ', '.join(new)))
if old_extra:
print("%s has extra files: %s" % (oldd, ', '.join(old_extra)))
return
try:
(old, new) = args
return self.compareSpecifications(new, old)
except IndexError:
self.errExit(self.__call__.__doc__)
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