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90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
package mockrouting
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import (
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"math/rand"
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"sync"
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"time"
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key "github.com/ipfs/go-ipfs/blocks/key"
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"github.com/ipfs/go-ipfs/thirdparty/testutil"
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ds "gx/ipfs/QmfQzVugPq1w5shWRcLWSeiHF4a2meBX7yVD8Vw7GWJM9o/go-datastore"
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dssync "gx/ipfs/QmfQzVugPq1w5shWRcLWSeiHF4a2meBX7yVD8Vw7GWJM9o/go-datastore/sync"
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pstore "gx/ipfs/QmQdnfvZQuhdT93LNc5bos52wAmdr3G2p6G8teLJMEN32P/go-libp2p-peerstore"
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peer "gx/ipfs/QmRBqJF7hb8ZSpRcMwUt8hNhydWcxGEhtk81HKq6oUwKvs/go-libp2p-peer"
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context "gx/ipfs/QmZy2y8t9zQH2a1b8q2ZSLKp17ATuJoCNxxyMFG5qFExpt/go-net/context"
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)
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// server is the mockrouting.Client's private interface to the routing server
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type server interface {
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Announce(pstore.PeerInfo, key.Key) error
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Providers(key.Key) []pstore.PeerInfo
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Server
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}
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// s is an implementation of the private server interface
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type s struct {
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delayConf DelayConfig
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lock sync.RWMutex
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providers map[key.Key]map[peer.ID]providerRecord
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}
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type providerRecord struct {
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Peer pstore.PeerInfo
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Created time.Time
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}
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func (rs *s) Announce(p pstore.PeerInfo, k key.Key) error {
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rs.lock.Lock()
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defer rs.lock.Unlock()
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_, ok := rs.providers[k]
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if !ok {
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rs.providers[k] = make(map[peer.ID]providerRecord)
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}
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rs.providers[k][p.ID] = providerRecord{
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Created: time.Now(),
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Peer: p,
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}
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return nil
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}
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func (rs *s) Providers(k key.Key) []pstore.PeerInfo {
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rs.delayConf.Query.Wait() // before locking
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rs.lock.RLock()
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defer rs.lock.RUnlock()
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var ret []pstore.PeerInfo
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records, ok := rs.providers[k]
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if !ok {
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return ret
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}
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for _, r := range records {
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if time.Now().Sub(r.Created) > rs.delayConf.ValueVisibility.Get() {
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ret = append(ret, r.Peer)
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}
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}
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for i := range ret {
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j := rand.Intn(i + 1)
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ret[i], ret[j] = ret[j], ret[i]
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}
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return ret
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}
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func (rs *s) Client(p testutil.Identity) Client {
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return rs.ClientWithDatastore(context.Background(), p, dssync.MutexWrap(ds.NewMapDatastore()))
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}
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func (rs *s) ClientWithDatastore(_ context.Context, p testutil.Identity, datastore ds.Datastore) Client {
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return &client{
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peer: p,
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datastore: datastore,
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server: rs,
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}
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}
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