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import binascii, difflib, getopt, lxml.etree, time, ConfigParser
import Bcfg2.Server.Admin
class Pull(Bcfg2.Server.Admin.Mode):
'''Pull mode retrieves entries from clients and integrates the information into the repository'''
__shorthelp__ = 'bcfg2-admin pull [-v] [-f] [-I] <client> <entry type> <entry name>'
__longhelp__ = __shorthelp__ + '\n\tIntegrate configuration information from clients into the server repository'
def __init__(self, configfile):
Bcfg2.Server.Admin.Mode.__init__(self, configfile)
cp = ConfigParser.ConfigParser()
cp.read([configfile])
self.repo = cp.get('server', 'repository')
self.log = False
self.mode = 'interactive'
def __call__(self, args):
Bcfg2.Server.Admin.Mode.__call__(self, args)
try:
opts, gargs = getopt.getopt(args, 'vfI')
except:
print self.__shorthelp__
raise SystemExit(0)
for opt in opts:
if opt[0] == '-v':
self.log = True
elif opt[0] == '-f':
self.mode = 'force'
elif opt[0] == '-I':
self.mode == 'interactive'
self.PullEntry(gargs[0], gargs[1], gargs[2])
def BuildNewEntry(self, client, etype, ename):
'''construct a new full entry for given client/entry from statistics'''
new_entry = {'type':etype, 'name':ename}
sdata = self.load_stats(client)
# no entries if state != dirty
sxpath = ".//Statistics[@state='dirty']/Bad/ConfigFile[@name='%s']/../.." % \
(ename)
sentries = sdata.xpath(sxpath)
if not len(sentries):
self.errExit("Found %d entries for %s:%s:%s" % \
(len(sentries), client, etype, ename))
else:
if self.log:
print "Found %d entries for %s:%s:%s" % \
(len(sentries), client, etype, ename)
maxtime = max([time.strptime(stat.get('time')) for stat in sentries])
if self.log:
print "Found entry from", time.strftime("%c", maxtime)
statblock = [stat for stat in sentries \
if time.strptime(stat.get('time')) == maxtime]
entry = statblock[0].xpath('.//Bad/ConfigFile[@name="%s"]' % ename)
if not entry:
self.errExit("Could not find state data for entry\n" \
"rerun bcfg2 on client system")
cfentry = entry[-1]
badfields = [field for field in ['perms', 'owner', 'group'] \
if cfentry.get(field) != cfentry.get('current_' + field) and \
cfentry.get('current_' + field)]
if badfields:
for field in badfields:
new_entry[field] = cfentry.get('current_%s' % field)
# now metadata updates are in place
if 'current_bfile' in cfentry.attrib:
new_entry['text'] = binascii.a2b_base64(cfentry.get('current_bfile'))
elif 'current_bdiff' in cfentry.attrib:
diff = binascii.a2b_base64(cfentry.get('current_bdiff'))
new_entry['text'] = '\n'.join(difflib.restore(diff.split('\n'), 1))
else:
print "found no data::"
print lxml.etree.tostring(cfentry)
raise SystemExit(1)
return new_entry
def Choose(self, choices):
'''Determine where to put pull data'''
if self.mode == 'interactive':
# FIXME improve bcfg2-admin pull interactive mode to add new entries
print "Plugin returned choice:"
if choices[0].all:
print " => global entry"
elif choices[0].group:
print " => group entry: %s (prio %d)" % (choices[0].group, choices[0].prio)
else:
print " => host entry: %s" % (choices[0].hostname)
if raw_input("Use this entry? [yN]: ") in ['y', 'Y']:
return choices[0]
return False
else:
# mode == 'force'
return choices[0]
def PullEntry(self, client, etype, ename):
'''Make currently recorded client state correct for entry'''
new_entry = self.BuildNewEntry(client, etype, ename)
try:
bcore = Bcfg2.Server.Core.Core(self.repo, [], ['Cfg', 'SSHbase', 'Metadata'],
'foo', False)
except Bcfg2.Server.Core.CoreInitError, msg:
self.errExit("Core load failed because %s" % msg)
[bcore.fam.Service() for _ in range(5)]
while bcore.fam.Service():
pass
meta = bcore.metadata.get_metadata(client)
# find appropriate plugin in bcore
glist = [gen for gen in bcore.generators if
gen.Entries.get(etype, {}).has_key(ename)]
if len(glist) != 1:
self.errExit("Got wrong numbers of matching generators for entry:" \
+ "%s" % ([g.__name__ for g in glist]))
plugin = glist[0]
try:
choices = plugin.AcceptChoices(new_entry, meta)
specific = self.Choose(choices)
if specific:
plugin.AcceptPullData(specific, new_entry, self.log)
except Bcfg2.Server.Plugin.PluginExecutionError:
self.errExit("Configuration upload not supported by plugin %s" \
% (plugin.__name__))
# FIXME svn commit if running under svn
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