def _update_vm(self, cluster, info, data, updated, callback):
"""
updates an individual VirtualMachine, this is the actual work function
@param cluster - cluster this node is on
@param info - info from ganeti
@param data - data from database
@param updated - counter object
@param callback - callback fired when method is complete.
"""
name = info['name']
if name in data:
id, mtime, status = data[name]
if not mtime or mtime < info['mtime'] \
or status != info['status']:
print ' Virtual Machine (updated) : %s' % name
#print ' %s :: %s' % (mtime, datetime.fromtimestamp(info['mtime']))
# only update the whole object if it is new or modified.
#
# XXX status changes will not always be reflected in mtime
# explicitly check status to see if it has changed. failing
# to check this would result in state changes being lost
parsed = VirtualMachine.parse_persistent_info(info)
if 'delete' in parsed:
VirtualMachine.objects.filter(pk=id).delete()
else:
VirtualMachine.objects.filter(pk=id) \
.update(serialized_info=cPickle.dumps(info), **parsed)
updated += 1
else:
# new vm
vm = VirtualMachine(cluster=cluster, hostname=info['name'])
vm.info = info
vm.save()
id = vm.id
updated += 1
callback(id)
