forked from cerc-io/plugeth
Stream subscriptions (#18355)
* swarm/network: eachBin now starts at kaddepth for nn * swarm/network: fix Kademlia.EachBin * swarm/network: fix kademlia.EachBin * swarm/network: correct EachBin implementation according to requirements * swarm/network: less addresses simplified tests * swarm: calc kad depth outside loop in EachBin test * swarm/network: removed printResults * swarm/network: cleanup imports * swarm/network: remove kademlia.EachBin; fix RequestSubscriptions and add unit test * swarm/network/stream: address PR comments * swarm/network/stream: package-wide subscriptionFunc * swarm/network/stream: refactor to kad.EachConn
This commit is contained in:
holisticode
Viktor Trón
parent
d5cad488be
commit
88168ff5c5
@ -356,37 +356,6 @@ func (k *Kademlia) Off(p *Peer) {
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}
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}
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// EachBin is a two level nested iterator
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// The outer iterator returns all bins that have known peers, in order from shallowest to deepest
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// The inner iterator returns all peers per bin returned by the outer iterator, in no defined order
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// TODO the po returned by the inner iterator is not reliable. However, it is not being used in this method
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func (k *Kademlia) EachBin(base []byte, pof pot.Pof, o int, eachBinFunc func(conn *Peer, po int) bool) {
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k.lock.RLock()
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defer k.lock.RUnlock()
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var startPo int
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var endPo int
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kadDepth := depthForPot(k.conns, k.NeighbourhoodSize, k.base)
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k.conns.EachBin(base, Pof, o, func(po, size int, f func(func(val pot.Val, i int) bool) bool) bool {
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if startPo > 0 && endPo != k.MaxProxDisplay {
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startPo = endPo + 1
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}
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if po < kadDepth {
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endPo = po
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} else {
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endPo = k.MaxProxDisplay
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}
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for bin := startPo; bin <= endPo; bin++ {
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f(func(val pot.Val, _ int) bool {
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return eachBinFunc(val.(*Peer), bin)
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})
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}
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return true
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})
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}
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// EachConn is an iterator with args (base, po, f) applies f to each live peer
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// that has proximity order po or less as measured from the base
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// if base is nil, kademlia base address is used
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@ -1,4 +1,4 @@
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// Copyright 2017 The go-ethereum Authors
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// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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@ -106,43 +106,6 @@ func TestSyncingViaGlobalSync(t *testing.T) {
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}
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}
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func TestSyncingViaDirectSubscribe(t *testing.T) {
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if runtime.GOOS == "darwin" && os.Getenv("TRAVIS") == "true" {
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t.Skip("Flaky on mac on travis")
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}
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//if nodes/chunks have been provided via commandline,
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//run the tests with these values
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if *nodes != 0 && *chunks != 0 {
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log.Info(fmt.Sprintf("Running test with %d chunks and %d nodes...", *chunks, *nodes))
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err := testSyncingViaDirectSubscribe(t, *chunks, *nodes)
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if err != nil {
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t.Fatal(err)
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}
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} else {
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var nodeCnt []int
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var chnkCnt []int
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//if the `longrunning` flag has been provided
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//run more test combinations
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if *longrunning {
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chnkCnt = []int{1, 8, 32, 256, 1024}
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nodeCnt = []int{32, 16}
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} else {
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//default test
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chnkCnt = []int{4, 32}
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nodeCnt = []int{32, 16}
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}
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for _, chnk := range chnkCnt {
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for _, n := range nodeCnt {
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log.Info(fmt.Sprintf("Long running test with %d chunks and %d nodes...", chnk, n))
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err := testSyncingViaDirectSubscribe(t, chnk, n)
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if err != nil {
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t.Fatal(err)
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}
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}
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}
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}
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}
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var simServiceMap = map[string]simulation.ServiceFunc{
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"streamer": streamerFunc,
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}
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@ -323,235 +286,6 @@ func runSim(conf *synctestConfig, ctx context.Context, sim *simulation.Simulatio
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})
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}
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/*
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The test generates the given number of chunks
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For every chunk generated, the nearest node addresses
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are identified, we verify that the nodes closer to the
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chunk addresses actually do have the chunks in their local stores.
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The test loads a snapshot file to construct the swarm network,
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assuming that the snapshot file identifies a healthy
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kademlia network. The snapshot should have 'streamer' in its service list.
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*/
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func testSyncingViaDirectSubscribe(t *testing.T, chunkCount int, nodeCount int) error {
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sim := simulation.New(map[string]simulation.ServiceFunc{
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"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
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n := ctx.Config.Node()
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addr := network.NewAddr(n)
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store, datadir, err := createTestLocalStorageForID(n.ID(), addr)
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if err != nil {
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return nil, nil, err
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}
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bucket.Store(bucketKeyStore, store)
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localStore := store.(*storage.LocalStore)
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netStore, err := storage.NewNetStore(localStore, nil)
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if err != nil {
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return nil, nil, err
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}
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kad := network.NewKademlia(addr.Over(), network.NewKadParams())
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delivery := NewDelivery(kad, netStore)
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netStore.NewNetFetcherFunc = network.NewFetcherFactory(dummyRequestFromPeers, true).New
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r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
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Retrieval: RetrievalDisabled,
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Syncing: SyncingRegisterOnly,
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}, nil)
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bucket.Store(bucketKeyRegistry, r)
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fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
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bucket.Store(bucketKeyFileStore, fileStore)
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cleanup = func() {
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os.RemoveAll(datadir)
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netStore.Close()
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r.Close()
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}
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return r, cleanup, nil
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},
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})
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defer sim.Close()
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ctx, cancelSimRun := context.WithTimeout(context.Background(), 2*time.Minute)
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defer cancelSimRun()
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conf := &synctestConfig{}
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//map of discover ID to indexes of chunks expected at that ID
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conf.idToChunksMap = make(map[enode.ID][]int)
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//map of overlay address to discover ID
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conf.addrToIDMap = make(map[string]enode.ID)
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//array where the generated chunk hashes will be stored
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conf.hashes = make([]storage.Address, 0)
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err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount))
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if err != nil {
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return err
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}
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if _, err := sim.WaitTillHealthy(ctx); err != nil {
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return err
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}
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disconnections := sim.PeerEvents(
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context.Background(),
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sim.NodeIDs(),
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simulation.NewPeerEventsFilter().Drop(),
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)
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var disconnected atomic.Value
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go func() {
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for d := range disconnections {
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if d.Error != nil {
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log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
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disconnected.Store(true)
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}
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}
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}()
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result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
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nodeIDs := sim.UpNodeIDs()
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for _, n := range nodeIDs {
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//get the kademlia overlay address from this ID
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a := n.Bytes()
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//append it to the array of all overlay addresses
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conf.addrs = append(conf.addrs, a)
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//the proximity calculation is on overlay addr,
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//the p2p/simulations check func triggers on enode.ID,
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//so we need to know which overlay addr maps to which nodeID
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conf.addrToIDMap[string(a)] = n
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}
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var subscriptionCount int
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filter := simulation.NewPeerEventsFilter().ReceivedMessages().Protocol("stream").MsgCode(4)
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eventC := sim.PeerEvents(ctx, nodeIDs, filter)
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for j, node := range nodeIDs {
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log.Trace(fmt.Sprintf("Start syncing subscriptions: %d", j))
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//start syncing!
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item, ok := sim.NodeItem(node, bucketKeyRegistry)
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if !ok {
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return fmt.Errorf("No registry")
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}
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registry := item.(*Registry)
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var cnt int
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cnt, err = startSyncing(registry, conf)
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if err != nil {
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return err
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}
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//increment the number of subscriptions we need to wait for
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//by the count returned from startSyncing (SYNC subscriptions)
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subscriptionCount += cnt
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}
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for e := range eventC {
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if e.Error != nil {
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return e.Error
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}
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subscriptionCount--
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if subscriptionCount == 0 {
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break
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}
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}
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//select a random node for upload
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node := sim.Net.GetRandomUpNode()
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item, ok := sim.NodeItem(node.ID(), bucketKeyStore)
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if !ok {
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return fmt.Errorf("No localstore")
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}
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lstore := item.(*storage.LocalStore)
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hashes, err := uploadFileToSingleNodeStore(node.ID(), chunkCount, lstore)
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if err != nil {
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return err
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}
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conf.hashes = append(conf.hashes, hashes...)
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mapKeysToNodes(conf)
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if _, err := sim.WaitTillHealthy(ctx); err != nil {
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return err
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}
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var globalStore mock.GlobalStorer
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if *useMockStore {
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globalStore = mockmem.NewGlobalStore()
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}
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// File retrieval check is repeated until all uploaded files are retrieved from all nodes
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// or until the timeout is reached.
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REPEAT:
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for {
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for _, id := range nodeIDs {
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//for each expected chunk, check if it is in the local store
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localChunks := conf.idToChunksMap[id]
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for _, ch := range localChunks {
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//get the real chunk by the index in the index array
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chunk := conf.hashes[ch]
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log.Trace(fmt.Sprintf("node has chunk: %s:", chunk))
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//check if the expected chunk is indeed in the localstore
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var err error
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if *useMockStore {
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//use the globalStore if the mockStore should be used; in that case,
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//the complete localStore stack is bypassed for getting the chunk
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_, err = globalStore.Get(common.BytesToAddress(id.Bytes()), chunk)
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} else {
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//use the actual localstore
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item, ok := sim.NodeItem(id, bucketKeyStore)
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if !ok {
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return fmt.Errorf("Error accessing localstore")
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}
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lstore := item.(*storage.LocalStore)
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_, err = lstore.Get(ctx, chunk)
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}
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if err != nil {
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log.Debug(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
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// Do not get crazy with logging the warn message
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time.Sleep(500 * time.Millisecond)
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continue REPEAT
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}
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log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
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}
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}
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return nil
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}
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})
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if result.Error != nil {
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return result.Error
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}
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if yes, ok := disconnected.Load().(bool); ok && yes {
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t.Fatal("disconnect events received")
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}
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log.Info("Simulation ended")
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return nil
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}
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//the server func to start syncing
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//issues `RequestSubscriptionMsg` to peers, based on po, by iterating over
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//the kademlia's `EachBin` function.
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//returns the number of subscriptions requested
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func startSyncing(r *Registry, conf *synctestConfig) (int, error) {
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var err error
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kad := r.delivery.kad
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subCnt := 0
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//iterate over each bin and solicit needed subscription to bins
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kad.EachBin(r.addr[:], pof, 0, func(conn *network.Peer, po int) bool {
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//identify begin and start index of the bin(s) we want to subscribe to
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subCnt++
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err = r.RequestSubscription(conf.addrToIDMap[string(conn.Address())], NewStream("SYNC", FormatSyncBinKey(uint8(po)), true), NewRange(0, 0), High)
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if err != nil {
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log.Error(fmt.Sprintf("Error in RequestSubsciption! %v", err))
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return false
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}
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return true
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})
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return subCnt, nil
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}
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//map chunk keys to addresses which are responsible
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func mapKeysToNodes(conf *synctestConfig) {
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nodemap := make(map[string][]int)
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@ -33,7 +33,6 @@ import (
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"github.com/ethereum/go-ethereum/swarm/log"
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"github.com/ethereum/go-ethereum/swarm/network"
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"github.com/ethereum/go-ethereum/swarm/network/stream/intervals"
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"github.com/ethereum/go-ethereum/swarm/pot"
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"github.com/ethereum/go-ethereum/swarm/state"
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"github.com/ethereum/go-ethereum/swarm/storage"
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)
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@ -73,6 +72,11 @@ const (
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RetrievalEnabled
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)
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// subscriptionFunc is used to determine what to do in order to perform subscriptions
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// usually we would start to really subscribe to nodes, but for tests other functionality may be needed
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// (see TestRequestPeerSubscriptions in streamer_test.go)
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var subscriptionFunc func(r *Registry, p *network.Peer, bin uint8, subs map[enode.ID]map[Stream]struct{}) bool = doRequestSubscription
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// Registry registry for outgoing and incoming streamer constructors
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type Registry struct {
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addr enode.ID
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@ -88,9 +92,9 @@ type Registry struct {
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intervalsStore state.Store
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autoRetrieval bool // automatically subscribe to retrieve request stream
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maxPeerServers int
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balance protocols.Balance // implements protocols.Balance, for accounting
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prices protocols.Prices // implements protocols.Prices, provides prices to accounting
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spec *protocols.Spec // this protocol's spec
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spec *protocols.Spec //this protocol's spec
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balance protocols.Balance //implements protocols.Balance, for accounting
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prices protocols.Prices //implements protocols.Prices, provides prices to accounting
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}
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// RegistryOptions holds optional values for NewRegistry constructor.
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@ -125,6 +129,7 @@ func NewRegistry(localID enode.ID, delivery *Delivery, syncChunkStore storage.Sy
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maxPeerServers: options.MaxPeerServers,
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balance: balance,
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}
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streamer.setupSpec()
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streamer.api = NewAPI(streamer)
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@ -467,24 +472,8 @@ func (r *Registry) updateSyncing() {
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}
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r.peersMu.RUnlock()
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// request subscriptions for all nodes and bins
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kad.EachBin(r.addr[:], pot.DefaultPof(256), 0, func(p *network.Peer, bin int) bool {
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log.Debug(fmt.Sprintf("Requesting subscription by: registry %s from peer %s for bin: %d", r.addr, p.ID(), bin))
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// bin is always less then 256 and it is safe to convert it to type uint8
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stream := NewStream("SYNC", FormatSyncBinKey(uint8(bin)), true)
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if streams, ok := subs[p.ID()]; ok {
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// delete live and history streams from the map, so that it won't be removed with a Quit request
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delete(streams, stream)
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delete(streams, getHistoryStream(stream))
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}
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err := r.RequestSubscription(p.ID(), stream, NewRange(0, 0), High)
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if err != nil {
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log.Debug("Request subscription", "err", err, "peer", p.ID(), "stream", stream)
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return false
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}
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return true
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})
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// start requesting subscriptions from peers
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r.requestPeerSubscriptions(kad, subs)
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// remove SYNC servers that do not need to be subscribed
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for id, streams := range subs {
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@ -505,6 +494,66 @@ func (r *Registry) updateSyncing() {
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}
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}
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// requestPeerSubscriptions calls on each live peer in the kademlia table
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// and sends a `RequestSubscription` to peers according to their bin
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// and their relationship with kademlia's depth.
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// Also check `TestRequestPeerSubscriptions` in order to understand the
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// expected behavior.
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// The function expects:
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// * the kademlia
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// * a map of subscriptions
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// * the actual function to subscribe
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// (in case of the test, it doesn't do real subscriptions)
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func (r *Registry) requestPeerSubscriptions(kad *network.Kademlia, subs map[enode.ID]map[Stream]struct{}) {
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var startPo int
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var endPo int
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var ok bool
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// kademlia's depth
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kadDepth := kad.NeighbourhoodDepth()
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// request subscriptions for all nodes and bins
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// nil as base takes the node's base; we need to pass 255 as `EachConn` runs
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// from deepest bins backwards
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kad.EachConn(nil, 255, func(p *network.Peer, po int) bool {
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//if the peer's bin is shallower than the kademlia depth,
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//only the peer's bin should be subscribed
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if po < kadDepth {
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startPo = po
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endPo = po
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} else {
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//if the peer's bin is equal or deeper than the kademlia depth,
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//each bin from the depth up to k.MaxProxDisplay should be subscribed
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startPo = kadDepth
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endPo = kad.MaxProxDisplay
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}
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for bin := startPo; bin <= endPo; bin++ {
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//do the actual subscription
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ok = subscriptionFunc(r, p, uint8(bin), subs)
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}
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return ok
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})
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}
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// doRequestSubscription sends the actual RequestSubscription to the peer
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func doRequestSubscription(r *Registry, p *network.Peer, bin uint8, subs map[enode.ID]map[Stream]struct{}) bool {
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log.Debug("Requesting subscription by registry:", "registry", r.addr, "peer", p.ID(), "bin", bin)
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// bin is always less then 256 and it is safe to convert it to type uint8
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stream := NewStream("SYNC", FormatSyncBinKey(bin), true)
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if streams, ok := subs[p.ID()]; ok {
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// delete live and history streams from the map, so that it won't be removed with a Quit request
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delete(streams, stream)
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delete(streams, getHistoryStream(stream))
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}
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err := r.RequestSubscription(p.ID(), stream, NewRange(0, 0), High)
|
||||
if err != nil {
|
||||
log.Debug("Request subscription", "err", err, "peer", p.ID(), "stream", stream)
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (r *Registry) runProtocol(p *p2p.Peer, rw p2p.MsgReadWriter) error {
|
||||
peer := protocols.NewPeer(p, rw, r.spec)
|
||||
bp := network.NewBzzPeer(peer)
|
||||
|
||||
@ -20,11 +20,16 @@ import (
|
||||
"bytes"
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/log"
|
||||
"github.com/ethereum/go-ethereum/p2p/enode"
|
||||
p2ptest "github.com/ethereum/go-ethereum/p2p/testing"
|
||||
"github.com/ethereum/go-ethereum/swarm/network"
|
||||
"golang.org/x/crypto/sha3"
|
||||
)
|
||||
|
||||
@ -952,3 +957,160 @@ func TestHasPriceImplementation(t *testing.T) {
|
||||
t.Fatal("No prices set for chunk delivery msg")
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
TestRequestPeerSubscriptions is a unit test for stream's pull sync subscriptions.
|
||||
|
||||
The test does:
|
||||
* assign each connected peer to a bin map
|
||||
* build up a known kademlia in advance
|
||||
* run the EachConn function, which returns supposed subscription bins
|
||||
* store all supposed bins per peer in a map
|
||||
* check that all peers have the expected subscriptions
|
||||
|
||||
This kad table and its peers are copied from network.TestKademliaCase1,
|
||||
it represents an edge case but for the purpose of testing the
|
||||
syncing subscriptions it is just fine.
|
||||
|
||||
Addresses used in this test are discovered as part of the simulation network
|
||||
in higher level tests for streaming. They were generated randomly.
|
||||
|
||||
The resulting kademlia looks like this:
|
||||
=========================================================================
|
||||
Fri Dec 21 20:02:39 UTC 2018 KΛÐΞMLIΛ hive: queen's address: 7efef1
|
||||
population: 12 (12), MinProxBinSize: 2, MinBinSize: 2, MaxBinSize: 4
|
||||
000 2 8196 835f | 2 8196 (0) 835f (0)
|
||||
001 2 2690 28f0 | 2 2690 (0) 28f0 (0)
|
||||
002 2 4d72 4a45 | 2 4d72 (0) 4a45 (0)
|
||||
003 1 646e | 1 646e (0)
|
||||
004 3 769c 76d1 7656 | 3 769c (0) 76d1 (0) 7656 (0)
|
||||
============ DEPTH: 5 ==========================================
|
||||
005 1 7a48 | 1 7a48 (0)
|
||||
006 1 7cbd | 1 7cbd (0)
|
||||
007 0 | 0
|
||||
008 0 | 0
|
||||
009 0 | 0
|
||||
010 0 | 0
|
||||
011 0 | 0
|
||||
012 0 | 0
|
||||
013 0 | 0
|
||||
014 0 | 0
|
||||
015 0 | 0
|
||||
=========================================================================
|
||||
*/
|
||||
func TestRequestPeerSubscriptions(t *testing.T) {
|
||||
// the pivot address; this is the actual kademlia node
|
||||
pivotAddr := "7efef1c41d77f843ad167be95f6660567eb8a4a59f39240000cce2e0d65baf8e"
|
||||
|
||||
// a map of bin number to addresses from the given kademlia
|
||||
binMap := make(map[int][]string)
|
||||
binMap[0] = []string{
|
||||
"835fbbf1d16ba7347b6e2fc552d6e982148d29c624ea20383850df3c810fa8fc",
|
||||
"81968a2d8fb39114342ee1da85254ec51e0608d7f0f6997c2a8354c260a71009",
|
||||
}
|
||||
binMap[1] = []string{
|
||||
"28f0bc1b44658548d6e05dd16d4c2fe77f1da5d48b6774bc4263b045725d0c19",
|
||||
"2690a910c33ee37b91eb6c4e0731d1d345e2dc3b46d308503a6e85bbc242c69e",
|
||||
}
|
||||
binMap[2] = []string{
|
||||
"4a45f1fc63e1a9cb9dfa44c98da2f3d20c2923e5d75ff60b2db9d1bdb0c54d51",
|
||||
"4d72a04ddeb851a68cd197ef9a92a3e2ff01fbbff638e64929dd1a9c2e150112",
|
||||
}
|
||||
binMap[3] = []string{
|
||||
"646e9540c84f6a2f9cf6585d45a4c219573b4fd1b64a3c9a1386fc5cf98c0d4d",
|
||||
}
|
||||
binMap[4] = []string{
|
||||
"7656caccdc79cd8d7ce66d415cc96a718e8271c62fb35746bfc2b49faf3eebf3",
|
||||
"76d1e83c71ca246d042e37ff1db181f2776265fbcfdc890ce230bfa617c9c2f0",
|
||||
"769ce86aa90b518b7ed382f9fdacfbed93574e18dc98fe6c342e4f9f409c2d5a",
|
||||
}
|
||||
binMap[5] = []string{
|
||||
"7a48f75f8ca60487ae42d6f92b785581b40b91f2da551ae73d5eae46640e02e8",
|
||||
}
|
||||
binMap[6] = []string{
|
||||
"7cbd42350bde8e18ae5b955b5450f8e2cef3419f92fbf5598160c60fd78619f0",
|
||||
}
|
||||
|
||||
// create the pivot's kademlia
|
||||
addr := common.FromHex(pivotAddr)
|
||||
k := network.NewKademlia(addr, network.NewKadParams())
|
||||
|
||||
// construct the peers and the kademlia
|
||||
for _, binaddrs := range binMap {
|
||||
for _, a := range binaddrs {
|
||||
addr := common.FromHex(a)
|
||||
k.On(network.NewPeer(&network.BzzPeer{BzzAddr: &network.BzzAddr{OAddr: addr}}, k))
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: check kad table is same
|
||||
// currently k.String() prints date so it will never be the same :)
|
||||
// --> implement JSON representation of kad table
|
||||
log.Debug(k.String())
|
||||
|
||||
// simulate that we would do subscriptions: just store the bin numbers
|
||||
fakeSubscriptions := make(map[string][]int)
|
||||
//after the test, we need to reset the subscriptionFunc to the default
|
||||
defer func() { subscriptionFunc = doRequestSubscription }()
|
||||
// define the function which should run for each connection
|
||||
// instead of doing real subscriptions, we just store the bin numbers
|
||||
subscriptionFunc = func(r *Registry, p *network.Peer, bin uint8, subs map[enode.ID]map[Stream]struct{}) bool {
|
||||
// get the peer ID
|
||||
peerstr := fmt.Sprintf("%x", p.Over())
|
||||
// create the array of bins per peer
|
||||
if _, ok := fakeSubscriptions[peerstr]; !ok {
|
||||
fakeSubscriptions[peerstr] = make([]int, 0)
|
||||
}
|
||||
// store the (fake) bin subscription
|
||||
log.Debug(fmt.Sprintf("Adding fake subscription for peer %s with bin %d", peerstr, bin))
|
||||
fakeSubscriptions[peerstr] = append(fakeSubscriptions[peerstr], int(bin))
|
||||
return true
|
||||
}
|
||||
// create just a simple Registry object in order to be able to call...
|
||||
r := &Registry{}
|
||||
r.requestPeerSubscriptions(k, nil)
|
||||
// calculate the kademlia depth
|
||||
kdepth := k.NeighbourhoodDepth()
|
||||
|
||||
// now, check that all peers have the expected (fake) subscriptions
|
||||
// iterate the bin map
|
||||
for bin, peers := range binMap {
|
||||
// for every peer...
|
||||
for _, peer := range peers {
|
||||
// ...get its (fake) subscriptions
|
||||
fakeSubsForPeer := fakeSubscriptions[peer]
|
||||
// if the peer's bin is shallower than the kademlia depth...
|
||||
if bin < kdepth {
|
||||
// (iterate all (fake) subscriptions)
|
||||
for _, subbin := range fakeSubsForPeer {
|
||||
// ...only the peer's bin should be "subscribed"
|
||||
// (and thus have only one subscription)
|
||||
if subbin != bin || len(fakeSubsForPeer) != 1 {
|
||||
t.Fatalf("Did not get expected subscription for bin < depth; bin of peer %s: %d, subscription: %d", peer, bin, subbin)
|
||||
}
|
||||
}
|
||||
} else { //if the peer's bin is equal or higher than the kademlia depth...
|
||||
// (iterate all (fake) subscriptions)
|
||||
for i, subbin := range fakeSubsForPeer {
|
||||
// ...each bin from the peer's bin number up to k.MaxProxDisplay should be "subscribed"
|
||||
// as we start from depth we can use the iteration index to check
|
||||
if subbin != i+kdepth {
|
||||
t.Fatalf("Did not get expected subscription for bin > depth; bin of peer %s: %d, subscription: %d", peer, bin, subbin)
|
||||
}
|
||||
// the last "subscription" should be k.MaxProxDisplay
|
||||
if i == len(fakeSubsForPeer)-1 && subbin != k.MaxProxDisplay {
|
||||
t.Fatalf("Expected last subscription to be: %d, but is: %d", k.MaxProxDisplay, subbin)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// print some output
|
||||
for p, subs := range fakeSubscriptions {
|
||||
log.Debug(fmt.Sprintf("Peer %s has the following fake subscriptions: ", p))
|
||||
for _, bin := range subs {
|
||||
log.Debug(fmt.Sprintf("%d,", bin))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user