mirror of
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93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package mockrouting
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import (
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"context"
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"math/rand"
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"sync"
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"time"
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"gx/ipfs/QmeDA8gNhvRTsbrjEieay5wezupJDiky8xvCzDABbsGzmp/go-testutil"
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peer "gx/ipfs/QmWNY7dV54ZDYmTA1ykVdwNCqC11mpU4zSUp6XDpLTH9eG/go-libp2p-peer"
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pstore "gx/ipfs/QmYijbtjCxFEjSXaudaQAUz3LN5VKLssm8WCUsRoqzXmQR/go-libp2p-peerstore"
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ds "gx/ipfs/QmdHG8MAuARdGHxx4rPQASLcvhz24fzjSQq7AJRAQEorq5/go-datastore"
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dssync "gx/ipfs/QmdHG8MAuARdGHxx4rPQASLcvhz24fzjSQq7AJRAQEorq5/go-datastore/sync"
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cid "gx/ipfs/QmeSrf6pzut73u6zLQkRFQ3ygt3k6XFT2kjdYP8Tnkwwyg/go-cid"
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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, *cid.Cid) error
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Providers(*cid.Cid) []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[string]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, c *cid.Cid) error {
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rs.lock.Lock()
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defer rs.lock.Unlock()
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k := c.KeyString()
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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(c *cid.Cid) []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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k := c.KeyString()
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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.Since(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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