def joinTheData(param):
if param == '':
return "the node is not valid"
try:
param = int(param)
except:
return "the join node data value, is not valid"
server = dhtServerManager.GetServerByDataValue(param)
if server == None:
dhtServer4 = DHTServer()
dhtServer4.DHTNodeDataValue = DHTNodeDataValue(param)
dhtServerManager.AssignHostAndPort(dhtServer4)
socketAddress4 = dhtServer4.GetDHTSocketAddress()
serverLovestValue = dhtServerManager.GetTheServerWithTheLowestDataValue(
)
msg = DHTMessage(DHTMessageType.Join)
msg.Argument = dhtServer4.Host
msg.Tag = str(dhtServer4.Port)
msg.Nodevalue = str(param)
return dhtServerManager.SendRequestTo(serverLovestValue, msg)
else:
return 'chord table already has this node'
def AddShortcutToNode(nodeValue, shortcutNodeValue):
if (not nodeValue) or nodeValue == '':
return "the node to add the shortcut to, is not valid"
if (not shortcutNodeValue) or shortcutNodeValue == '':
return "the shortcut node to add the shortcut to, is not valid"
try:
nodeValue = int(nodeValue)
except:
return "the node data value for the node to add the shortcut to, is not valid"
try:
shortcutNodeValue = int(shortcutNodeValue)
except:
return "the shortcut node data value, is not valid"
server = dhtServerManager.GetServerByDataValue(nodeValue)
if server == None:
return "the node to add the shortcut to, was not found"
shortcutserver = dhtServerManager.GetServerByDataValue(shortcutNodeValue)
if shortcutserver == None:
return "the node is supposed to be added as a shortcut, was not found"
msg = DHTMessage(DHTMessageType.Shortcut)
msg.Argument = shortcutserver.Host
msg.Tag = str(shortcutserver.Port)
return dhtServerManager.SendRequestTo(server, msg)
def OnRequest(self, dataBytes):
dataStr = dataBytes.decode("utf-8")
msg = DHTMessage.deserialize(dataStr)
if self.OnRequestHandler != None:
self.OnRequestHandler(msg)
return str(self.handleMessage(msg))
def List():
server = dhtServerManager.GetTheServerWithTheLowestDataValue()
if server == None:
click.echo("the Ring is not initialized!!")
return
result = dhtServerManager.SendRequestTo(server,
DHTMessage(DHTMessageType.List))
click.echo(result)
def GetNextSuccessorDataValueAsString(self, socketAddresses_tuple):
nextSuccessorDataAsString = ""
nextSuccessorDataAsString += self.getValueFromTheCurrentRequest(socketAddresses_tuple, self.NextSuccessorDHTServerSocketAddress)
if nextSuccessorDataAsString == "":
nextSuccessorDataAsString = DHTSocket.OpenASocketAndSendTheRequest(self.NextSuccessorDHTServerSocketAddress.Host, self.NextSuccessorDHTServerSocketAddress.Port, DHTMessage(DHTMessageType.DataAsString))
return nextSuccessorDataAsString
def GetShortcutsDataValueAsString(self, socketAddresses_tuple):
shortcuts = ''
if self.FingerDHTServerSocketAddresses:
for fingerSocketAddress in self.FingerDHTServerSocketAddresses:
res = ''
res += self.getValueFromTheCurrentRequest(socketAddresses_tuple, fingerSocketAddress)
if res == None or res == '':
shortcuts += DHTSocket.OpenASocketAndSendTheRequest(fingerSocketAddress.Host, fingerSocketAddress.Port, DHTMessage(DHTMessageType.DataAsString)) + ','
else:
shortcuts += res + ','
if shortcuts == '':
shortcuts += ','
return shortcuts
def ping(host, port):
result = dhtServerManager.PingTheHostAndPort(
host, int(port), DHTMessage(DHTMessageType.Ping))
click.echo(result)