cwinfo/yggdrasil-go
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more cleanup, comments, and dht reset() changes

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This commit is contained in:
Arceliar 2018-10-20 18:12:34 -05:00
parent f3ec8c5b37
commit 63d6ab4251
1 changed files with 24 additions and 2 deletions
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26
src/yggdrasil/dht.go
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@ -53,20 +53,42 @@ type dht struct {
reqs map[boxPubKey]map[NodeID]time.Time
}
// Initializes the DHT
func (t *dht) init(c *Core) {
// TODO
t.core = c
t.nodeID = *t.core.GetNodeID()
t.peers = make(chan *dhtInfo, 1024)
t.reset()
}
// Resets the DHT in response to coord changes
// This empties all info from the DHT and drops outstanding requests
// It sends a ping to the old successor and predecessor, in case they're still around
func (t *dht) reset() {
//fmt.Println("Resetting table:", t.nodeID)
var successor *dhtInfo
var predecessor *dhtInfo
for infoID, info := range t.table {
// Get current successor and predecessor
if successor == nil || dht_ordered(&t.nodeID, &infoID, successor.getNodeID()) {
successor = info
}
if predecessor == nil || dht_ordered(predecessor.getNodeID(), &infoID, &t.nodeID) {
predecessor = info
}
}
t.reqs = make(map[boxPubKey]map[NodeID]time.Time)
t.table = make(map[NodeID]*dhtInfo)
if successor != nil {
t.ping(successor, &t.nodeID)
}
if predecessor != nil {
t.ping(predecessor, &t.nodeID)
}
}
// Does a DHT lookup and returns up to dht_lookup_size results
// If allowWorse = true, begins with best know predecessor for ID and works backwards, even if these nodes are worse predecessors than we are, to be used when intializing searches
// If allowWorse = false, begins with the best known successor for ID and works backwards (next is predecessor, etc, inclusive of the ID if it's a known node)
func (t *dht) lookup(nodeID *NodeID, allowWorse bool) []*dhtInfo {
var results []*dhtInfo
var successor *dhtInfo