def fetch_hardware():
'''Autodetect which system we are trying to contact and perform hardware
information fetch'''
global partition_table
global node_state
global indexes
global system_type
# Generate a list of all possible nodecards in all possible partitions
system = ComponentProxy('system', defer=True)
if system_type is None:
# We are self-discovering. Can save this step if we
# already know the system type.
system_type = system.get_implementation()
if system_type in bg_types:
partition_table = dict((part['name'], part['node_card_names'])
for part in system.get_partitions([{'name': '*',
'node_card_names': '*'}]))
node_state = {}
elif system_type in cluster_types:
partition_table = {}
node_state = dict((node[0], node[1]) for node in system.get_node_status())
elif system_type in cray_types:
partition_table = {}
# Using JSON for speed and avoinding the XML-RPC marshaller.
stst = json.loads(system.get_nodes(True, None, alps_system_query_fields, True))
indexes = {}
for idx in stst:
r = stst[idx]
if r['status'] == 'busy':
indexes[idx] = r['name']
node_state = dict((k, v['status']) for k, v in stst.iteritems())
else:
raise RuntimeError('The %s system implementation is not supported by cweb')
return system_type
