41 lines
986 B
Go
41 lines
986 B
Go
package main
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import (
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"fmt"
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poindexter "github.com/Snider/Poindexter"
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)
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type Peer struct {
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Addr string
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Ping int
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}
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func main() {
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// Toy DHT routing table
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table := []Peer{
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{Addr: "peer1.example:4001", Ping: 74},
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{Addr: "peer2.example:4001", Ping: 52},
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{Addr: "peer3.example:4001", Ping: 110},
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{Addr: "peer4.example:4001", Ping: 35},
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{Addr: "peer5.example:4001", Ping: 60},
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{Addr: "peer6.example:4001", Ping: 44},
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}
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pts := make([]poindexter.KDPoint[Peer], 0, len(table))
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for i, p := range table {
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pts = append(pts, poindexter.KDPoint[Peer]{
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ID: fmt.Sprintf("peer-%d", i+1),
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Coords: []float64{float64(p.Ping)},
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Value: p,
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})
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}
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kdt, err := poindexter.NewKDTree(pts, poindexter.WithMetric(poindexter.EuclideanDistance{}))
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if err != nil {
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panic(err)
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}
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best, d, ok := kdt.Nearest([]float64{0})
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if !ok {
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fmt.Println("no peers found")
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return
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}
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fmt.Printf("Best peer: %s (ping=%d ms), distance=%.0f\n", best.Value.Addr, best.Value.Ping, d)
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}
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