def findNode(self, id, callback, errback=None):
""" returns the contact info for node, or the k closest nodes, from the global table """
# get K nodes out of local table/cache, or the node we want
nodes = self.table.findNodes(id, invalid=True)
l = [x for x in nodes if x.invalid]
if len(l) > 4:
nodes = sample(l, 4) + self.table.findNodes(id, invalid=False)[:4]
d = Deferred()
if errback:
d.addCallbacks(callback, errback)
else:
d.addCallback(callback)
if len(nodes) == 1 and nodes[0].id == id:
d.callback(nodes)
else:
# create our search state
state = FindNode(self, id, d.callback, self.rawserver.add_task)
self.rawserver.external_add_task(0, state.goWithNodes, nodes)
def findNode(self, id, callback, errback=None):
""" returns the contact info for node, or the k closest nodes, from the global table """
# get K nodes out of local table/cache, or the node we want
nodes = self.table.findNodes(id, invalid=True)
l = [x for x in nodes if x.invalid]
if len(l) > 4:
nodes = sample(l , 4) + self.table.findNodes(id, invalid=False)[:4]
d = Deferred()
if errback:
d.addCallbacks(callback, errback)
else:
d.addCallback(callback)
if len(nodes) == 1 and nodes[0].id == id :
d.callback(nodes)
else:
# create our search state
state = FindNode(self, id, d.callback, self.rawserver.add_task)
self.rawserver.external_add_task(state.goWithNodes, 0, (nodes,))
def getPeers(self, info_hash, callback, searchlocal = 1):
""" returns the values found for key in global table
callback will be called with a list of values for each peer that returns unique values
final callback will be an empty list - probably should change to 'more coming' arg
"""
nodes = self.table.findNodes(info_hash, invalid=True)
l = [x for x in nodes if x.invalid]
if len(l) > 4:
nodes = sample(l , 4) + self.table.findNodes(info_hash, invalid=False)[:4]
# get locals
if searchlocal:
l = self.retrieveValues(info_hash)
if len(l) > 0:
self.rawserver.external_add_task(callback, 0, ([reducePeers(l)],))
else:
l = []
# create our search state
state = GetValue(self, info_hash, callback, self.rawserver.add_task, 'getPeers')
self.rawserver.external_add_task(state.goWithNodes, 0, (nodes, l))
def getPeers(self, info_hash, callback, searchlocal = 1):
""" returns the values found for key in global table
callback will be called with a list of values for each peer that returns unique values
final callback will be an empty list - probably should change to 'more coming' arg
"""
print "getPeers"
nodes = self.table.findNodes(info_hash, invalid=True)
l = [x for x in nodes if x.invalid]
if len(l) > 4:
nodes = sample(l , 4) + self.table.findNodes(info_hash, invalid=False)[:4]
# get locals
if searchlocal:
l = self.retrieveValues(info_hash)
if len(l) > 0:
self.rawserver.external_add_task(0, callback, [reducePeers(l)])
else:
l = []
# create our search state
state = GetValue(self, info_hash, callback, self.rawserver.add_task, 'getPeers')
self.rawserver.external_add_task(0, state.goWithNodes, nodes, l)
