def start_verify_server():
count = input("Enter number of verifiers to run " \
"(press enter for all configured in ini file): ")
try:
count = int(count)
if count == 0:
print(
'Verifier Server quitting, since number of verifiers is zero..!!'
)
sys.exit(0)
except ValueError:
count = None
try:
conf_reader = ConfigReader()
iNode = conf_reader.get_iota_node_config()
device = conf_reader.get_device_config()
verifier = conf_reader.get_verifier_server_config()
except ConfigurationMissing as e:
print("%s \n\n ... Exiting " % (str(e), ))
sys.exit(0)
iota_node_address = iNode.addr
iota_port = iNode.port
recv_addr = device.recv_addr
verifier_server = verifier.serv_addr
verifier_server_port = verifier.serv_port
iota_host = 'http://{0}:{1}'.format(iota_node_address, iota_port)
verifier_names = [
item for item in conf_reader.sections() if item.startswith('V_')
]
if count == None:
count = len(verifier_names)
verifier_iota = {}
for i in range(count):
_ver = verifier_names[i]
try:
verifier = conf_reader.get_verifiers_config(_ver)
except ConfigurationMissing as e:
print(str(e))
continue
verifier_id = verifier.id if verifier.id else 'Verifier-{id}'.format(
id=i)
class_name = verifier.class_name
_seed = verifier.seed
push_back = verifier.push_back
verify_server = eval(
'verifiers.{cls_name}'.format(cls_name=class_name)) # TBD
_obj = verify_server(verifier_id, iota_host, _seed, push_back)
verifier_iota[verifier_id] = _obj
# Start our server for listening to verifier calls
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind((verifier_server, verifier_server_port))
sock.listen()
try:
while True:
print("Waiting for new connections ..")
connection, client_address = sock.accept()
print("\n .. Received New Connection from : %s" %
(str(client_address), ))
while True:
_b_msg = connection.recv(14)
curr_msg = _b_msg.decode('utf-8')
print("\n .. Received from the IOTA subscriber : %s \n" %
(curr_msg, ))
if curr_msg:
all_msgs = curr_msg.split('/')
for one_msg in all_msgs:
if not one_msg:
continue
message_id = one_msg
for (i, o) in verifier_iota.items():
print(".. Called verifier %s on the data .." %
(i, ))
o.run(msg_id=message_id)
else:
break
except KeyboardInterrupt:
sock.close()
print('\n\n... Verifier server not running anymore')
def startup():
try:
conf_reader = ConfigReader()
iNode = conf_reader.get_iota_node_config()
device = conf_reader.get_device_config()
broker = conf_reader.get_broker_config()
verifier = conf_reader.get_verifier_server_config()
except ConfigurationMissing as e:
print("%s \n\n ... Exiting " %(str(e),))
sys.exit(0)
iota_node_address = iNode.addr
iota_port = iNode.port
depth_value = iNode.depth
dev_seed = device.send_seed
recv_addr = device.recv_addr
broker_address = broker.mqtt_addr
broker_port = broker.mqtt_port
intrstd_topics = broker.topics
verifier_server = verifier.serv_addr
verifier_server_port = verifier.serv_port
iota_obj = Iota('http://{0}:{1}'.format(iota_node_address, iota_port), dev_seed)
sock = None
if verifier_server and verifier_server_port:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
sock.connect((verifier_server, verifier_server_port))
print('Successfully connected to the verifier server ...')
except:
print('ATTENTION : Verifier server not up and running, nothing will be verified ...')
# Check DB if existing, and set ID generation offset
offset = 0
if os.path.exists(DB_FILE):
_conn = sqlite3.connect(DB_FILE)
_c = _conn.cursor()
try:
_c.execute("SELECT MAX(msg_id) FROM {t_name}".format(t_name=TABLE_NAME))
offset = _c.fetchone()[0]
except Exception:
pass
finally:
_conn.close()
msg_id_gen = msg_id_generator(offset).__next__
private_data = {'topics' : intrstd_topics,
'iota_obj' : iota_obj,
'msg_id_gen' : msg_id_gen,
'address_to_send' : recv_addr,
'depth' : depth_value,
'verify_server' : sock, }
client = mqtt.Client(client_id='iota_mqtt', userdata=private_data)
client.on_connect = on_connect
client.on_message = on_data_received
client.connect(host=broker_address, port=broker_port)
try:
client.loop_forever()
except KeyboardInterrupt:
if sock:
sock.close()
print('\n\n... No longer connected to Broker')