42 lines
885 B
Go
42 lines
885 B
Go
package p2p
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import (
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"context"
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"sync"
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"time"
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"github.com/libp2p/go-libp2p/core/peer"
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routedhost "github.com/libp2p/go-libp2p/p2p/host/routed"
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)
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type ParallelRouting struct {
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routings []routedhost.Routing
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}
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func (pr ParallelRouting) FindPeer(ctx context.Context, p peer.ID) (peer.AddrInfo, error) {
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var wg sync.WaitGroup
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var mutex sync.Mutex
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var info peer.AddrInfo
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info.ID = p
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subCtx, cancelSubCtx := context.WithTimeout(ctx, 30*time.Second)
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for _, r := range pr.routings {
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wg.Add(1)
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r2 := r
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go func() {
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defer wg.Done()
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ai, err := r2.FindPeer(subCtx, p)
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if err == nil {
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mutex.Lock()
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defer mutex.Unlock()
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info.Addrs = append(info.Addrs, ai.Addrs...)
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// give the other routings a short time period to find a better address
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time.AfterFunc(500*time.Millisecond, cancelSubCtx)
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}
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}()
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}
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wg.Wait()
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cancelSubCtx()
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return info, nil
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}
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