def chordStart(self, bootstrapNodeList, isBootstrapNode, enableAutoDiscovery, myPort, myIP, statusCallback, enclaveToJoin, nodeID, authenticationPayload):
'''
Start Chord using the given parameters
'''
# Find a live bootstrap node
bootstrapNodeLocation = yield Utils.findLiveBootstrapNode(bootstrapNodeList, enableAutoDiscovery)
log.msg("DEBUG: chordStart: bootstrapNodeLocation returned: %s" % bootstrapNodeLocation, system="chordStart")
if bootstrapNodeLocation is None:
if isBootstrapNode:
# This is okay, we are just the only node.
bootstrapNodeIP = None
bootstrapNodePort = None
else:
# Failure... we can't startup by ourselves!
log.msg("Failed to join because could not find a live bootstrap node.")
statusCallback(False, None)
return
else:
bootstrapNodeIP = bootstrapNodeLocation.ip
bootstrapNodePort = bootstrapNodeLocation.port
# Setup the bootstrap node location list
if bootstrapNodeList == None:
bootstrapNodeList = []
if bootstrapNodeIP is not None and bootstrapNodePort is not None:
bootstrapNodeList.append( NodeLocation(None,bootstrapNodeIP,bootstrapNodePort))
# Figure out the enclave we're joining
if bootstrapNodeIP == None and bootstrapNodePort == None:
if enclaveToJoin is None:
enclaveToJoin = 'localhost'
else:
# There is another node we can get info from
if enclaveToJoin is None or enclaveToJoin == 'fromBootstrap':
# Figure it out from the bootstrap node
enclaveToJoin = yield self.findEnclave(bootstrapNodeIP, bootstrapNodePort)
else:
# Check if the bootstrap node is consistent
status = yield self.checkEnclave(bootstrapNodeIP, bootstrapNodePort, enclaveToJoin)
if not status:
raise Exception('Bootstrap node is not part of enclave [%s]. Cannot join like that.' % enclaveToJoin)
print("DEBUG: ChordStart: enclave to join is : %s : %s " % (enclaveToJoin, type(enclaveToJoin)))
# Get the node ID for this Node/Enclave
if nodeID == None:
raise Exception("Programming error. NodeID cannot be None.")
# Make sure it's an int
if not isinstance( nodeID, ( int, long ) ):
raise Exception("Programming error. NodeID must be an int.")
# Set myPort and myIP
if myPort is None:
raise Exception("No port specified in ChordStart. No can do!")
# This is the IP of the node. Note: This MUST be
# an external ID or the code won't work!
allowFloatingIP = myIP == None # Do we allow chord node to change the IP? True | False
if myIP is None:
if bootstrapNodeIP is None:
myIP = socket.gethostbyname(socket.gethostname())
# To use ipNode, We need bootstrapNodeLocation.
# Not sure how to change this code if we need external IP?
# Maybe this code is fine. -Fengwei
else:
# There is someone else to ask!
# Create an IPNode
ipNode = NetworkUtils.IPNode()
# The IP address should get from the IPNode in case of NAT
try:
myIP = yield ipNode.getRemoteIP(bootstrapNodeLocation)
except:
log.err()
# Now startup the node
log.msg("ClassChord API| Starting Chord Node on Port: %s:%s:%s" %(myIP, myPort, enclaveToJoin))
self.chordNode = ChordNode(myIP, myPort, nodeID, allowFloatingIP)
self.chordNode.setAuthenticator(self.classChordClientObj) # Who can auth messages for us?
self.serverFactory = GmuServerFactory(self.chordNode)
deferResult = self.chordNode.join(bootstrapNodeList,enableAutoDiscovery, enclaveToJoin, authenticationPayload, isBootstrapNode, factory=self.serverFactory)
deferResult.addBoth(self.joinComplete, statusCallback) # This is our callback, we use it to set some things upon completion.
