def handle_heartbeat(info, address, connection, channel, exchange, gw_binding,db, redis):
"""
S2
heartbeat packet
0: success, then record new terminal's address
1: invalid SessionID
3: acc_status is changed
"""
try:
head = info.head
body = info.body
dev_id = head.dev_id
args = DotDict(success=GATEWAY.RESPONSE_STATUS.SUCCESS)
old_softversion = False # if version < 2.4.0, true; else false.
sessionID = QueryHelper.get_terminal_sessionID(dev_id, redis)
if sessionID != head.sessionID:
args.success = GATEWAY.RESPONSE_STATUS.INVALID_SESSIONID
else:
hp = HeartbeatParser(body, head)
heartbeat_info = hp.ret
is_sleep = False
if heartbeat_info['sleep_status'] == '0':
heartbeat_info['login'] = GATEWAY.TERMINAL_LOGIN.SLEEP
is_sleep = True
elif heartbeat_info['sleep_status'] == '1':
heartbeat_info['login'] = GATEWAY.TERMINAL_LOGIN.ONLINE
is_sleep = False
elif heartbeat_info['sleep_status'] == '2': # query mode
acc_status_info_key = get_acc_status_info_key(dev_id)
acc_status_info = redis.getvalue(acc_status_info_key)
if acc_status_info and int(acc_status_info['op_status']) == 0:
args.timestamp = acc_status_info['timestamp']
args.op_type = acc_status_info['op_type']
# modify t2_status in acc_status_info
acc_status_info['t2_status'] = 1 # T2 query occurs
redis.setvalue(acc_status_info_key, acc_status_info, UWEB.ACC_STATUS_EXPIRY)
else: # if acc_status_info['op_status'] is 1, or no acc_status_info, set op_type is 2
args.timestamp = ''
args.op_type = 2 # wait
else: #NOTE: it should never occur
logging.error("[GW] Recv wrong sleep status: %s", heartbeat_info)
del heartbeat_info['sleep_status']
update_terminal_status(redis, head.dev_id, address, is_sleep)
update_terminal_info(db, redis, heartbeat_info)
if args['success'] == GATEWAY.RESPONSE_STATUS.SUCCESS:
acc_status_info_key = get_acc_status_info_key(dev_id)
acc_status_info = redis.getvalue(acc_status_info_key)
if acc_status_info and (not acc_status_info['t2_status']): # T2(query) is need
args['success'] = 3 # acc_status is changed
logging.info("[GW] ACC_status is changed, dev_id: %s, acc_status_info: %s",
dev_id, acc_status_info)
#NOTE: check the version.
# if version is less than 2.4.0(not include 2.4.0), only has success in args
softversion = heartbeat_info['softversion']
item = softversion.split(".")
if int(item[0]) > 2:
pass
else: # A.B.C A <= 2
if int(item[1]) < 4: # A.B.C B <= 4
old_softversion = True
else:
pass
if old_softversion:
logging.info("[GW] Old softversion(<2.4.0): %s, only success is provided in S2",
softversion)
args = dict(success=args['success'])
hc = HeartbeatRespComposer(args)
request = DotDict(packet=hc.buf,
address=address,
dev_id=dev_id)
append_gw_request(request, connection, channel, exchange, gw_binding)
except:
logging.exception("[GW] Hand heartbeat failed.")
GWException().notify()
