diff --git a/swarm/network/stream/visualized_snapshot_sync_sim_test.go b/swarm/network/stream/visualized_snapshot_sync_sim_test.go index 27237d184..96b707797 100644 --- a/swarm/network/stream/visualized_snapshot_sync_sim_test.go +++ b/swarm/network/stream/visualized_snapshot_sync_sim_test.go @@ -19,16 +19,27 @@ package stream import ( + "bytes" "context" + "errors" "fmt" + "io" + "os" + "sync" "testing" "time" + "github.com/ethereum/go-ethereum/node" "github.com/ethereum/go-ethereum/p2p" - "github.com/ethereum/go-ethereum/p2p/discover" + "github.com/ethereum/go-ethereum/p2p/enode" + "github.com/ethereum/go-ethereum/p2p/protocols" "github.com/ethereum/go-ethereum/p2p/simulations" + "github.com/ethereum/go-ethereum/p2p/simulations/adapters" + "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/swarm/log" + "github.com/ethereum/go-ethereum/swarm/network" "github.com/ethereum/go-ethereum/swarm/network/simulation" + "github.com/ethereum/go-ethereum/swarm/state" "github.com/ethereum/go-ethereum/swarm/storage" ) @@ -68,12 +79,12 @@ func watchSim(sim *simulation.Simulation) (context.Context, context.CancelFunc) disconnections := sim.PeerEvents( context.Background(), sim.NodeIDs(), - simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeDrop), + simulation.NewPeerEventsFilter().Drop(), ) go func() { for d := range disconnections { - log.Error("peer drop", "node", d.NodeID, "peer", d.Event.Peer) + log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID) panic("unexpected disconnect") cancelSimRun() } @@ -144,21 +155,75 @@ func sendSimTerminatedEvent(sim *simulation.Simulation) { //It also sends some custom events so that the frontend //can visualize messages like SendOfferedMsg, WantedHashesMsg, DeliveryMsg func TestSnapshotSyncWithServer(t *testing.T) { + //t.Skip("temporarily disabled as simulations.WaitTillHealthy cannot be trusted") + + //define a wrapper object to be able to pass around data + wrapper := &netWrapper{} + + nodeCount := *nodes + chunkCount := *chunks + + if nodeCount == 0 || chunkCount == 0 { + nodeCount = 32 + chunkCount = 1 + } + + log.Info(fmt.Sprintf("Running the simulation with %d nodes and %d chunks", nodeCount, chunkCount)) + + sim := simulation.New(map[string]simulation.ServiceFunc{ + "streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) { + n := ctx.Config.Node() + addr := network.NewAddr(n) + store, datadir, err := createTestLocalStorageForID(n.ID(), addr) + if err != nil { + return nil, nil, err + } + bucket.Store(bucketKeyStore, store) + localStore := store.(*storage.LocalStore) + netStore, err := storage.NewNetStore(localStore, nil) + if err != nil { + return nil, nil, err + } + kad := network.NewKademlia(addr.Over(), network.NewKadParams()) + delivery := NewDelivery(kad, netStore) + netStore.NewNetFetcherFunc = network.NewFetcherFactory(dummyRequestFromPeers, true).New + + r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{ + Retrieval: RetrievalDisabled, + Syncing: SyncingAutoSubscribe, + SyncUpdateDelay: 3 * time.Second, + }, nil) + + tr := &testRegistry{ + Registry: r, + w: wrapper, + } + + bucket.Store(bucketKeyRegistry, tr) + + cleanup = func() { + netStore.Close() + tr.Close() + os.RemoveAll(datadir) + } + + return tr, cleanup, nil + }, + }).WithServer(":8888") //start with the HTTP server - t.Skip("temporarily disabled as simulations.WaitTillHealthy cannot be trusted") - nodeCount, chunkCount, sim := setupSim(simServiceMap) defer sim.Close() log.Info("Initializing test config") conf := &synctestConfig{} //map of discover ID to indexes of chunks expected at that ID - conf.idToChunksMap = make(map[discover.NodeID][]int) + conf.idToChunksMap = make(map[enode.ID][]int) //map of overlay address to discover ID - conf.addrToIDMap = make(map[string]discover.NodeID) + conf.addrToIDMap = make(map[string]enode.ID) //array where the generated chunk hashes will be stored conf.hashes = make([]storage.Address, 0) - + //pass the network to the wrapper object + wrapper.setNetwork(sim.Net) err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount)) if err != nil { panic(err) @@ -167,49 +232,6 @@ func TestSnapshotSyncWithServer(t *testing.T) { ctx, cancelSimRun := watchSim(sim) defer cancelSimRun() - //setup filters in the event feed - offeredHashesFilter := simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeMsgRecv).Protocol("stream").MsgCode(1) - wantedFilter := simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeMsgRecv).Protocol("stream").MsgCode(2) - deliveryFilter := simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeMsgRecv).Protocol("stream").MsgCode(6) - eventC := sim.PeerEvents(ctx, sim.UpNodeIDs(), offeredHashesFilter, wantedFilter, deliveryFilter) - - quit := make(chan struct{}) - - go func() { - for e := range eventC { - select { - case <-quit: - fmt.Println("quitting event loop") - return - default: - } - if e.Error != nil { - t.Fatal(e.Error) - } - if *e.Event.MsgCode == uint64(1) { - evt := &simulations.Event{ - Type: EventTypeChunkOffered, - Node: sim.Net.GetNode(e.NodeID), - Control: false, - } - sim.Net.Events().Send(evt) - } else if *e.Event.MsgCode == uint64(2) { - evt := &simulations.Event{ - Type: EventTypeChunkWanted, - Node: sim.Net.GetNode(e.NodeID), - Control: false, - } - sim.Net.Events().Send(evt) - } else if *e.Event.MsgCode == uint64(6) { - evt := &simulations.Event{ - Type: EventTypeChunkDelivered, - Node: sim.Net.GetNode(e.NodeID), - Control: false, - } - sim.Net.Events().Send(evt) - } - } - }() //run the sim result := runSim(conf, ctx, sim, chunkCount) @@ -218,11 +240,150 @@ func TestSnapshotSyncWithServer(t *testing.T) { Type: EventTypeSimTerminated, Control: false, } - sim.Net.Events().Send(evt) + go sim.Net.Events().Send(evt) if result.Error != nil { panic(result.Error) } - close(quit) log.Info("Simulation ended") } + +//testRegistry embeds registry +//it allows to replace the protocol run function +type testRegistry struct { + *Registry + w *netWrapper +} + +//Protocols replaces the protocol's run function +func (tr *testRegistry) Protocols() []p2p.Protocol { + regProto := tr.Registry.Protocols() + //set the `stream` protocol's run function with the testRegistry's one + regProto[0].Run = tr.runProto + return regProto +} + +//runProto is the new overwritten protocol's run function for this test +func (tr *testRegistry) runProto(p *p2p.Peer, rw p2p.MsgReadWriter) error { + //create a custom rw message ReadWriter + testRw := &testMsgReadWriter{ + MsgReadWriter: rw, + Peer: p, + w: tr.w, + Registry: tr.Registry, + } + //now run the actual upper layer `Registry`'s protocol function + return tr.runProtocol(p, testRw) +} + +//testMsgReadWriter is a custom rw +//it will allow us to re-use the message twice +type testMsgReadWriter struct { + *Registry + p2p.MsgReadWriter + *p2p.Peer + w *netWrapper +} + +//netWrapper wrapper object so we can pass data around +type netWrapper struct { + net *simulations.Network +} + +//set the network to the wrapper for later use (used inside the custom rw) +func (w *netWrapper) setNetwork(n *simulations.Network) { + w.net = n +} + +//get he network from the wrapper (used inside the custom rw) +func (w *netWrapper) getNetwork() *simulations.Network { + return w.net +} + +// ReadMsg reads a message from the underlying MsgReadWriter and emits a +// "message received" event +//we do this because we are interested in the Payload of the message for custom use +//in this test, but messages can only be consumed once (stream io.Reader) +func (ev *testMsgReadWriter) ReadMsg() (p2p.Msg, error) { + //read the message from the underlying rw + msg, err := ev.MsgReadWriter.ReadMsg() + if err != nil { + return msg, err + } + + //don't do anything with message codes we actually are not needing/reading + subCodes := []uint64{1, 2, 10} + found := false + for _, c := range subCodes { + if c == msg.Code { + found = true + } + } + //just return if not a msg code we are interested in + if !found { + return msg, nil + } + + //we use a io.TeeReader so that we can read the message twice + //the Payload is a io.Reader, so if we read from it, the actual protocol handler + //cannot access it anymore. + //But we need that handler to be able to consume the message as normal, + //as if we would not do anything here with that message + var buf bytes.Buffer + tee := io.TeeReader(msg.Payload, &buf) + + mcp := &p2p.Msg{ + Code: msg.Code, + Size: msg.Size, + ReceivedAt: msg.ReceivedAt, + Payload: tee, + } + //assign the copy for later use + msg.Payload = &buf + + //now let's look into the message + var wmsg protocols.WrappedMsg + err = mcp.Decode(&wmsg) + if err != nil { + log.Error(err.Error()) + return msg, err + } + //create a new message from the code + val, ok := ev.Registry.GetSpec().NewMsg(mcp.Code) + if !ok { + return msg, errors.New(fmt.Sprintf("Invalid message code: %v", msg.Code)) + } + //decode it + if err := rlp.DecodeBytes(wmsg.Payload, val); err != nil { + return msg, errors.New(fmt.Sprintf("Decoding error <= %v: %v", msg, err)) + } + //now for every message type we are interested in, create a custom event and send it + var evt *simulations.Event + switch val := val.(type) { + case *OfferedHashesMsg: + evt = &simulations.Event{ + Type: EventTypeChunkOffered, + Node: ev.w.getNetwork().GetNode(ev.ID()), + Control: false, + Data: val.Hashes, + } + case *WantedHashesMsg: + evt = &simulations.Event{ + Type: EventTypeChunkWanted, + Node: ev.w.getNetwork().GetNode(ev.ID()), + Control: false, + } + case *ChunkDeliveryMsgSyncing: + evt = &simulations.Event{ + Type: EventTypeChunkDelivered, + Node: ev.w.getNetwork().GetNode(ev.ID()), + Control: false, + Data: val.Addr.String(), + } + } + if evt != nil { + //send custom event to feed; frontend will listen to it and display + ev.w.getNetwork().Events().Send(evt) + } + return msg, nil +}