def register(meta_ip, meta_port, data_ip, data_port):
"""Creates a connection with the metadata server and
register as data node
"""
# Establish connectionDUP{"servers": [["localhost", 5050]]}
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
add = (meta_ip, meta_port)
sock.connect(add)
# Fill code
print("HERE")
try:
response = "NAK"
sp = Packet()
while response == "NAK":
sp.BuildRegPacket(data_ip, data_port)
sock.sendall(sp.getEncodedPacket())
response = sock.recv(1024)
print(response)
if response == "ACK":
print "Successfully Registered"
# handle(response)
if response == "DUP":
print "Duplicate Registration"
if response == "NAK":
print "Registration ERROR"
sys.exit(0)
finally:
sock.close()
def register(meta_ip, meta_port, data_ip, data_port):
"""
Creates a connection with the metadata server and
registers as data node
"""
# Establish connection
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((meta_ip, meta_port))
# Attempt registration
try:
sp = Packet()
sp.BuildRegPacket(data_ip, data_port)
sock.send(sp.getEncodedPacket())
response = sock.recv(3) # 3 because it's only "ACK"/"NAK"/"DUP"
if response == "DUP":
print "Already registered to MDS! Resuming activity..."
elif response == "NAK":
print "Registration Error!"
sock.close()
sys.exit(0)
finally:
sock.close()
def register(meta_ip, meta_port, data_ip, data_port):
"""Creates a connection with the metadata server and
register as data node
"""
# Establish connection
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# sock.connect((meta_ip, meta_port))
print "meta_ip ", meta_ip
print "data_ip ", data_ip
try:
response = "NAK"
sp = Packet()
while response == "NAK":
sp.BuildRegPacket(data_ip, data_port)
sock.connect((meta_ip, meta_port))
sock.sendall(sp.getEncodedPacket())
response = sock.recv(1024)
print "response ", response
if response == "DUP":
print "Duplicate Registration"
if response == "NAK":
print "Registratation ERROR"
finally:
sock.close()
def register(meta_ip, meta_port, data_ip, data_port):
"""Creates a connection with the metadata server and
register as data node
"""
# Establish connection
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((meta_ip, meta_port))
# Fill code
try:
response = "NAK"
# creating packet to send to the meta-data server.
packet_reg = Packet()
while response == "NAK":
#The packet will contain the address and the port from the datanode to be registered
packet_reg.BuildRegPacket(data_ip, data_port)
#send packet to meta-data server.
sock.sendall(packet_reg.getEncodedPacket())
response = sock.recv(1024)
if response == "ACK":
print "DataNode was registered successfully"
if response == "DUP":
print "Duplicate Registration"
if response == "NAK":
print "Registration ERROR"
finally:
sock.close()
def register(meta_ip, meta_port, data_ip, data_port):
"""
Creates a connection with the metadata server and register as data node
"""
# Establish connection
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((meta_ip, meta_port))
# Fill code
try:
response = 'NAK'
p = Packet()
while response == 'NAK':
p.BuildRegPacket(data_ip, data_port)
sock.sendall(p.getEncodedPacket().encode())
response = sock.recv(1024).decode()
if response == 'DUP':
print('Duplicate Registration')
if response == "NAK":
print('Registratation ERROR')
finally:
sock.close()
def register(meta_ip, meta_port, data_ip, data_port):
"""Creates a connection with the metadata server and
register as data node
"""
# Establish connection
# Fill code
sock = socket.socket()
sock.connect((meta_ip, meta_port))
try:
response = "NAK"
sp = Packet()
while response == "NAK":
sp.BuildRegPacket(data_ip, data_port)
sock.sendall(sp.getEncodedPacket())
response = sock.recv(1024)
response = response.decode()
if response == "DUP":
print("Duplicate Registration")
if response == "NAK":
print("Registratation ERROR")
finally:
sock.close()
sys.exit(1)
#if no error occured connection was succesful!
print( "Connection to metadata server was succesful." )
# We use the following try to determine what happens with the registration. If there was an error, if it was duplicate or if it worked!
try:
response = "NAK"
create_packet = Packet()
while response == "NAK":
create_packet.BuildRegPacket(data_ip, data_port)
created_socket.sendall(create_packet.getEncodedPacket())
response = created_socket.recv(1024)
if response == "DUP":
print "Duplicate Registration"
# we add the response condition "ACK"
if response == "ACK":
print ("Registration process was completed!")
if response == "NAK":
print("error here")
