swarm: codebase split from go-ethereum (#1405)
This commit is contained in:
Rafael Matias
committed by
Anton Evangelatov
Anton Evangelatov
parent
7a22da98b9
commit
b046760db1
347
network/stream/syncer_test.go
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347
network/stream/syncer_test.go
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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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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package stream
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import (
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"context"
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"sync"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
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"github.com/ethersphere/swarm/chunk"
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"github.com/ethersphere/swarm/log"
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"github.com/ethersphere/swarm/network"
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"github.com/ethersphere/swarm/network/simulation"
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"github.com/ethersphere/swarm/state"
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"github.com/ethersphere/swarm/storage"
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"github.com/ethersphere/swarm/testutil"
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)
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const dataChunkCount = 200
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func TestSyncerSimulation(t *testing.T) {
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testSyncBetweenNodes(t, 2, dataChunkCount, true, 1)
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// This test uses much more memory when running with
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// race detector. Allow it to finish successfully by
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// reducing its scope, and still check for data races
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// with the smallest number of nodes.
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if !testutil.RaceEnabled {
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testSyncBetweenNodes(t, 4, dataChunkCount, true, 1)
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testSyncBetweenNodes(t, 8, dataChunkCount, true, 1)
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testSyncBetweenNodes(t, 16, dataChunkCount, true, 1)
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}
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}
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func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, po uint8) {
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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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addr := network.NewAddr(ctx.Config.Node())
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//hack to put addresses in same space
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addr.OAddr[0] = byte(0)
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netStore, delivery, clean, err := newNetStoreAndDeliveryWithBzzAddr(ctx, bucket, addr)
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if err != nil {
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return nil, nil, err
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}
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var dir string
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var store *state.DBStore
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if testutil.RaceEnabled {
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// Use on-disk DBStore to reduce memory consumption in race tests.
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dir, err = ioutil.TempDir("", "swarm-stream-")
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if err != nil {
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return nil, nil, err
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}
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store, err = state.NewDBStore(dir)
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if err != nil {
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return nil, nil, err
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}
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} else {
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store = state.NewInmemoryStore()
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}
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r := NewRegistry(addr.ID(), delivery, netStore, store, &RegistryOptions{
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Syncing: SyncingAutoSubscribe,
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SkipCheck: skipCheck,
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}, nil)
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cleanup = func() {
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r.Close()
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clean()
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if dir != "" {
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os.RemoveAll(dir)
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}
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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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// create context for simulation run
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timeout := 30 * time.Second
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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// defer cancel should come before defer simulation teardown
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defer cancel()
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_, err := sim.AddNodesAndConnectChain(nodes)
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if err != nil {
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t.Fatal(err)
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}
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result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) (err error) {
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nodeIDs := sim.UpNodeIDs()
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nodeIndex := make(map[enode.ID]int)
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for i, id := range nodeIDs {
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nodeIndex[id] = i
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}
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disconnected := watchDisconnections(ctx, sim)
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defer func() {
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if err != nil && disconnected.bool() {
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err = errors.New("disconnect events received")
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}
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}()
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// each node Subscribes to each other's swarmChunkServerStreamName
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for j := 0; j < nodes-1; j++ {
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id := nodeIDs[j]
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client, err := sim.Net.GetNode(id).Client()
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if err != nil {
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return fmt.Errorf("node %s client: %v", id, err)
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}
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sid := nodeIDs[j+1]
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client.CallContext(ctx, nil, "stream_subscribeStream", sid, NewStream("SYNC", FormatSyncBinKey(1), false), NewRange(0, 0), Top)
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if err != nil {
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return err
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}
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if j > 0 || nodes == 2 {
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item, ok := sim.NodeItem(nodeIDs[j], bucketKeyFileStore)
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if !ok {
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return fmt.Errorf("No filestore")
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}
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fileStore := item.(*storage.FileStore)
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size := chunkCount * chunkSize
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_, wait, err := fileStore.Store(ctx, testutil.RandomReader(j, size), int64(size), false)
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if err != nil {
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return fmt.Errorf("fileStore.Store: %v", err)
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}
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wait(ctx)
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}
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}
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// here we distribute chunks of a random file into stores 1...nodes
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// collect hashes in po 1 bin for each node
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hashes := make([][]storage.Address, nodes)
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totalHashes := 0
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hashCounts := make([]int, nodes)
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for i := nodes - 1; i >= 0; i-- {
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if i < nodes-1 {
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hashCounts[i] = hashCounts[i+1]
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}
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item, ok := sim.NodeItem(nodeIDs[i], bucketKeyStore)
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if !ok {
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return fmt.Errorf("No DB")
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}
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store := item.(chunk.Store)
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until, err := store.LastPullSubscriptionBinID(po)
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if err != nil {
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return err
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}
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if until > 0 {
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c, _ := store.SubscribePull(ctx, po, 0, until)
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for iterate := true; iterate; {
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select {
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case cd, ok := <-c:
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if !ok {
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iterate = false
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break
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}
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hashes[i] = append(hashes[i], cd.Address)
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totalHashes++
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hashCounts[i]++
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case <-ctx.Done():
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return ctx.Err()
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}
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}
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}
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}
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var total, found int
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for _, node := range nodeIDs {
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i := nodeIndex[node]
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for j := i; j < nodes; j++ {
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total += len(hashes[j])
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for _, key := range hashes[j] {
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item, ok := sim.NodeItem(nodeIDs[j], bucketKeyStore)
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if !ok {
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return fmt.Errorf("No DB")
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}
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db := item.(chunk.Store)
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_, err := db.Get(ctx, chunk.ModeGetRequest, key)
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if err == nil {
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found++
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}
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}
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}
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log.Debug("sync check", "node", node, "index", i, "bin", po, "found", found, "total", total)
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}
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if total == found && total > 0 {
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return nil
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}
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return fmt.Errorf("Total not equallying found %v: total is %d", found, total)
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})
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if result.Error != nil {
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t.Fatal(result.Error)
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}
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}
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//TestSameVersionID just checks that if the version is not changed,
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//then streamer peers see each other
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func TestSameVersionID(t *testing.T) {
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//test version ID
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v := uint(1)
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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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addr, netStore, delivery, clean, err := newNetStoreAndDelivery(ctx, bucket)
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if err != nil {
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return nil, nil, err
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}
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r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
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Syncing: SyncingAutoSubscribe,
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}, nil)
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bucket.Store(bucketKeyRegistry, r)
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//assign to each node the same version ID
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r.spec.Version = v
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cleanup = func() {
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r.Close()
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clean()
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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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//connect just two nodes
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log.Info("Adding nodes to simulation")
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_, err := sim.AddNodesAndConnectChain(2)
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if err != nil {
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t.Fatal(err)
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}
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log.Info("Starting simulation")
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ctx := context.Background()
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//make sure they have time to connect
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time.Sleep(200 * time.Millisecond)
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result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
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//get the pivot node's filestore
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nodes := sim.UpNodeIDs()
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item, ok := sim.NodeItem(nodes[0], bucketKeyRegistry)
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if !ok {
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return fmt.Errorf("No filestore")
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}
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registry := item.(*Registry)
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//the peers should connect, thus getting the peer should not return nil
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if registry.getPeer(nodes[1]) == nil {
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return errors.New("Expected the peer to not be nil, but it is")
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}
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return nil
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})
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if result.Error != nil {
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t.Fatal(result.Error)
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}
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log.Info("Simulation ended")
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}
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//TestDifferentVersionID proves that if the streamer protocol version doesn't match,
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//then the peers are not connected at streamer level
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func TestDifferentVersionID(t *testing.T) {
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//create a variable to hold the version ID
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v := uint(0)
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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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addr, netStore, delivery, clean, err := newNetStoreAndDelivery(ctx, bucket)
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if err != nil {
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return nil, nil, err
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}
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r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
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Syncing: SyncingAutoSubscribe,
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}, nil)
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bucket.Store(bucketKeyRegistry, r)
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//increase the version ID for each node
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v++
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r.spec.Version = v
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cleanup = func() {
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r.Close()
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clean()
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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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//connect the nodes
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log.Info("Adding nodes to simulation")
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_, err := sim.AddNodesAndConnectChain(2)
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if err != nil {
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t.Fatal(err)
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}
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log.Info("Starting simulation")
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ctx := context.Background()
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//make sure they have time to connect
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time.Sleep(200 * time.Millisecond)
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result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
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//get the pivot node's filestore
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nodes := sim.UpNodeIDs()
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item, ok := sim.NodeItem(nodes[0], bucketKeyRegistry)
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if !ok {
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return fmt.Errorf("No filestore")
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}
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registry := item.(*Registry)
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//getting the other peer should fail due to the different version numbers
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if registry.getPeer(nodes[1]) != nil {
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return errors.New("Expected the peer to be nil, but it is not")
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}
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return nil
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})
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if result.Error != nil {
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t.Fatal(result.Error)
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}
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log.Info("Simulation ended")
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}
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