def bootstrap(self, fail=None, peers=[]): ''' Bootstraps the peer into the (P2P) network. It calls the specific method 'doBootstrap' to handle overlay specific steps. ''' node = None try: node = peers.pop(0) except IndexError: print ' *\033[91m Bootstrapping failed:\033[0m cannot reach any introducer node.' return if fail is None: print '-+- Bootstrapping into the network -+-' else: print >> stderr, ' * Bootstrapping with this peer has failed' print ' | trying with %s, port %s, kind %s and protocol %s' % ( node['address'], node['port'], node['kind'], node['protocol'] ) try: wind = WindManager.findWind( kind=node['kind'], protocol=node['protocol']) except NoSuchAWindError: return self.bootstrap(peers=peers) try: d = wind.factory.connect(node['address'], node['port']) d.addCallback(self.doBootstrap, peers=peers) d.addErrback(self.bootstrap, peers=peers) except AttributeError as e: print ' * Bootstrapping with %s (%s:%s) protocol %s has failed' % ( node['address'], node['port'], node['kind'], node['protocol'] ) print ' Can\'t find a suitable wind for this bootstrap node.' return
def sayHello(self, peer): w = None for c in peer.getConnections(): try: w = WindManager.findWind(c[2], c[3]) except NoSuchAWindError: pass else: break else: print >> stderr, ( " * Couldn't find a wind for contacting %s" % peer.getName()) raise NoSuchAWindError, 'No wind for contacting ' + peer.getName() return w.factory.connect( c[0], c[1] # Address / Port ).addCallback( peer.setTransport ).addCallback( self.sendHello)
).addCallback(
lambda m: True
).addErrback(
self.introRecvdErrback, message=message)
else:
node = message.getElement('node')
peer = CyclonPeer(node.getAttribute('name'))
peer.addConnectionsFromXML(node.childNodes)
winds = [ ]
for c in peer.getConnections():
try:
w = WindManager.findWind(c[2], c[3])
except NoSuchAWindError:
continue
winds.append((w,c))
if len(Cyclon.peerList) > 0:
introduced = Cyclon.peerList.getRandomPeer()
else:
introduced = Cyclon.myself
self.introductoryConnection(None, peer, introduced, winds)
def introreplyReceived(self, (transport, message)):
try:
node = message.getElement('node')
def main():
from twisted.internet import reactor
from configparser import ConfigParser
from wind import WindManager
from overlay import OverlayManager
from message import MessageKeeper
from extension import ComponentManager
from extension import PluginManager
from sys import stderr
print '-+- Parsing configuration file and CLI -+-'
cfg = ConfigParser()
try:
cfg.parseOptions()
except RuntimeError as e:
print >> stderr, ' * Error while parsing configurations'
for l in str(e).splitlines():
print >> stderr, '\t>', l
return -1
except Warning as e:
errors = str(e).splitlines()
print >> stderr, ' *', errors[0]
for l in errors[1:]:
print >> stderr, '\t>', l
print '-+- Loading Winds -+-'
try:
WindManager.load(cfg['winds'])
except RuntimeError as e:
print >> stderr, ' * Error while loading winds:'
for l in str(e).splitlines():
print >> stderr, '\t>', l
wdesc = WindManager.getDescriptors()
if len(wdesc) == 0:
print >> stderr, " * No wind was loaded. Exiting with error."
return -1
print '-+- Loading Overlay -+-'
try:
OverlayManager.load(cfg['overlay'])
except RuntimeError as e:
print >> stderr, (' * Error while loading overlay\n\t' + str(e))
return -1
print '-+- Loading Management Components -+-'
try:
ComponentManager.load(cfg['managementComponents'])
except RuntimeError as e:
print >> stderr, (
' * Error while loading management component\n\t' + str(e))
return -1
overlay = OverlayManager.getOverlay()
overlay.start(cfg['node'], WindManager.getDescriptors())
MessageKeeper.startToKeep()
WindManager.startListening(overlay)
ComponentManager.register(overlay)
if len(cfg['bootstrap']) > 0:
reactor.callWhenRunning(overlay.bootstrap, None, cfg['bootstrap'])
reactor.run()
