def client(ip, port):
# Contacts the metadata server
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((ip, port))
# Ask for list of files
p = Packet()
p.BuildListPacket()
sock.send(p.getEncodedPacket())
# Receive msg from MDS
msg = sock.recv(LS_BUFFER)
if msg == "NAK":
print "Error ocurred when receiving `ls` response! Exiting..."
sock.close()
sys.exit(0)
# Decode msg
p.DecodePacket(msg)
# Get list of (fname, fsize)
flist = p.getFileArray()
# Print fname followed by fsize
for n, s in flist:
print "%s %d bytes" % (n, s)
# Close connection
sock.close()
def client(ip, port):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((ip, port))
p = Packet()
p.BuildListPacket()
msg = p.getEncodedPacket()
sock.sendall(msg.encode())
msg = sock.recv(1024).decode()
p.DecodePacket(msg)
print(msg)
sock.close() # cierra coneccion
def client(ip, port):
# Contacts the metadata server and ask for list of files.
p = Packet()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((ip, port))
p.BuildListPacket() # build list request package
sock.sendall(p.getEncodedPacket()
) # package must be encoded before sending throught the net
data = sock.recv(1024) # recieve data sent from meta-data server
p.DecodePacket(data) # recieved data must be decoded before reading
files = p.getFileArray() # get array of files after packet decoded
for file in files:
print os.path.abspath(file[0]), file[1], "bytes"
def client(ip, port): # Contacts the metadata server and ask for list of files. p = Packet() p.BuildListPacket() packet = p.getEncodedPacket() # convert packet to bytes s = socket.socket() s.connect((ip, port)) s.sendto(packet, (ip, port)) # sending packet to server # go to server packetReceived = s.recvfrom(1024) #receiving packet from server and it is a tuple p.DecodePacket(packetReceived[0]) # converting packet from bytes to its original type, packetReceived[0] is where the byte packet is packet = p.packet files = packet['files'] for file in files: print(file[0], file[1])
def client(ip, port):
# Contacts the metadata server and ask for list of files.
socko = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socko.connect((ip, port))
packet = Packet()
packet.BuildListPacket()
data_message = packet.getEncodedPacket()
socko.sendall(data_message)
rec = socko.recv(4096)
dec_packet = Packet()
dec_packet.DecodePacket(rec)
print_files = dec_packet.getFileArray()
socko.close()
for n, s in print_files:
print """%s %d bytes""" % (n, s)
def client(ip, port):
# Contacts the metadata server and ask for list of files.
so = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
#print("Here")
#print("connected")
#Creating a packet that will request the list to the meta-data server.
packet_list_request = Packet()
#print("Packet request built")
#Using the function BuildListPacket() from Packet.py,
#the packet will have the list command inside and it will let know
#the meta-data server how to handle the request.
packet_list_request.BuildListPacket()
list_request = packet_list_request.getEncodedPacket()
#Connecting to the socket .
so.connect((ip, port))
#sending list request packet to meta-data server.
so.sendall(list_request)
#print packet_list_request
#print("receiving list from meta-data server")
#list_response will contain the response from the meta-data server to the
#list request.
list_response = so.recv(4096)
#create a packet to decode and have access to the list that was sent by meta-data.py.
packet_list = Packet()
packet_list.DecodePacket(list_response)
#closing socket connection.
so.close()
#printing the file list.
for file, size in packet_list.getFileArray():
print """%s %d bytes""" % (file, size)
except:
raise
print("Connection with the server failed. Error: " + str(e)
) #error if connection fails
sys.exit(1)
print("Connection to the MetaData Server was successful."
) #if it doesn't fail, the connection was succesful!
# We have this try where it will continue checking till the reply is not equal to NAK.
# When that occurs it will check if there are any existing files and print them out.
# If there are no files then it will say so and exit the while if eitehr of these happen.
try:
packet = Packet()
reply = "NAK"
while reply == "NAK":
packet.BuildListPacket()
created_socket.sendall(packet.getEncodedPacket())
reply = created_socket.recv(1024)
if reply != "NAK":
packet.DecodePacket(reply)
file_list = packet.getFileArray()
if not file_list:
print "No files exists here."
else:
for a in file_list:
print(a[0], str(a[1]) + "bytes")
finally:
created_socket.close() #socket that was used is closed
