start_time = min([int(lease['start_time'])
for lease in leases])
end_time = max([int(lease['start_time']) +
- int(lease['duration'])
+ int(lease['duration'])*60
for lease in leases])
nodes_list = [Xrn.unescape(Xrn(lease['component_id'].strip(),
type='node').get_leaf())