def calc_latency(self, node_to_calc):
""" calculate latency of given node, remove if node is not connected """
start = time.clock()
success = False
try:
for i in range(5):
node_to_calc.client.ping()
node_to_calc.latency = (
(time.clock() - start) / 5) * 1000 # converting to ms
success = True
except: # node not connected
print(str(sys.exc_info()))
logger().warning(
"error attempting to ping an unregistered node: disconnecting node"
)
if node_to_calc in self.connections: # if a registered node disconnects
self.connections.remove(node_to_calc)
self.remove_from_peer_dict(node_to_calc)
try:
net_dao.update_failed_ping(node_to_calc)
except Exception as ex:
template = "An exception of type {0} occured. Arguments:\n{1!r}"
message = template.format(type(ex).__name__, ex.args)
logger().warning(message)
return success
def discover_node(self, node_to_discover):
""" discover node, get_verifications node info from unregistered nodes (updating unregistered nodes) """
if self.connect_thrift_node(node_to_discover):
logger().info('successfully connected to unregistered node port: %s', node_to_discover.port)
try: # if able to connect to unregistered node
if self.calc_latency(node_to_discover):
net_dao.update_con_activity(node_to_discover)
finally: # disconnect node
logger().info('disconnecting unregistered node port: %s', node_to_discover.port)
self.disconnect_node(node_to_discover)
else: # failed to ping node (not connected)
net_dao.update_failed_ping(node_to_discover)
logger().warning('unsuccessful connection attempt to unregistered node port: %s', node_to_discover.port)
def calc_latency(self, node_to_calc):
""" calculate latency of given node, remove if node is not connected """
start = time.clock()
success = False
try:
for i in range(5):
node_to_calc.client.ping()
node_to_calc.latency = ((time.clock() - start) / 5) * 1000 # converting to ms
success = True
except: # node not connected
print(str(sys.exc_info()))
logger().warning("error attempting to ping an unregistered node: disconnecting node")
if node_to_calc in self.connections: # if a registered node disconnects
self.connections.remove(node_to_calc)
self.remove_from_peer_dict(node_to_calc)
try:
net_dao.update_failed_ping(node_to_calc)
except Exception as ex:
template = "An exception of type {0} occurred. Arguments:\n{1!r}"
message = template.format(type(ex).__name__, ex.args)
logger().warning(message)
return success