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)
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)
reactor.callFromThread(state.goWithNodes, nodes)
def findNode(self, id, callback):
"""Find the contact info for the K closest nodes in the global table.
@type id: C{string}
@param id: the target ID to find the K closest nodes of
@type callback: C{method}
@param callback: the method to call with the results, it must take 1
parameter, the list of K closest nodes
"""
# Mark the bucket as having been accessed
self.table.touch(id)
# Start with our node
nodes = [copy(self.node)]
# Start the finding nodes action
state = FindNode(self, id, callback, self.config, self.stats)
reactor.callLater(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(0, state.goWithNodes, nodes)