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import lxml.etree
import os
import Bcfg2.Server.Admin
class Compare(Bcfg2.Server.Admin.Mode):
__shorthelp__ = ("Determine differences between files or "
"directories of client specification instances")
__longhelp__ = (__shorthelp__ + "\n\nbcfg2-admin compare <file1> <file2>"
"\nbcfg2-admin compare -r <dir1> <dir2>")
__usage__ = ("bcfg2-admin compare <old> <new>\n\n"
" -r\trecursive")
def __init__(self, configfile):
Bcfg2.Server.Admin.Mode.__init__(self, configfile)
self.important = {'Package': ['name', 'version'],
'Service': ['name', 'status'],
'Directory': ['name', 'owner', 'group', 'perms'],
'SymLink': ['name', 'to'],
'ConfigFile': ['name', 'owner', 'group', 'perms'],
'Permissions': ['name', 'perms'],
'PostInstall': ['name']}
def compareStructures(self, new, old):
for child in new.getchildren():
equiv = old.xpath('%s[@name="%s"]' %
(child.tag, child.get('name')))
if child.tag in self.important:
print("tag type %s not handled" % (child.tag))
continue
if len(equiv) == 0:
print("didn't find matching %s %s" %
(child.tag, child.get('name')))
continue
elif len(equiv) >= 1:
if child.tag == 'ConfigFile':
if child.text != equiv[0].text:
print(" %s %s contents differ" \
% (child.tag, child.get('name')))
continue
noattrmatch = [field for field in self.important[child.tag] if \
child.get(field) != equiv[0].get(field)]
if not noattrmatch:
new.remove(child)
old.remove(equiv[0])
else:
print(" %s %s attributes %s do not match" % \
(child.tag, child.get('name'), noattrmatch))
if len(old.getchildren()) == 0 and len(new.getchildren()) == 0:
return True
if new.tag == 'Independent':
name = 'Base'
else:
name = new.get('name')
both = []
oldl = ["%s %s" % (entry.tag, entry.get('name')) for entry in old]
newl = ["%s %s" % (entry.tag, entry.get('name')) for entry in new]
for entry in newl:
if entry in oldl:
both.append(entry)
newl.remove(entry)
oldl.remove(entry)
for entry in both:
print(" %s differs (in bundle %s)" % (entry, name))
for entry in oldl:
print(" %s only in old configuration (in bundle %s)" % (entry,
name))
for entry in newl:
print(" %s only in new configuration (in bundle %s)" % (entry,
name))
return False
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])
rcs = []
for bundle in new.findall('./Bundle'):
equiv = old.xpath('Bundle[@name="%s"]' % (bundle.get('name')))
if len(equiv) == 0:
print("couldnt find matching bundle for %s" % bundle.get('name'))
continue
if len(equiv) == 1:
if self.compareStructures(bundle, equiv[0]):
new.remove(bundle)
old.remove(equiv[0])
rcs.append(True)
else:
rcs.append(False)
else:
print("Unmatched bundle %s" % (bundle.get('name')))
rcs.append(False)
i1 = new.find('./Independent')
i2 = old.find('./Independent')
if self.compareStructures(i1, i2):
new.remove(i1)
old.remove(i2)
else:
rcs.append(False)
return False not in rcs
def __call__(self, args):
Bcfg2.Server.Admin.Mode.__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]
for item in old:
print("Entry:", item)
state = self.__call__([oldd + '/' + item, newd + '/' + item])
new.remove(item)
if state:
print("Entry:", item, "good")
else:
print("Entry:", item, "bad")
if new:
print("new has extra entries", new)
return
try:
(old, new) = args
except IndexError:
print(self.__call__.__doc__)
raise SystemExit(1)
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