forked from cerc-io/plugeth
swarm/network/stream: add pure retrieval test (#19552)
This commit is contained in:
holisticode
Anton Evangelatov
parent
6ec6b29051
commit
7744241886
@ -16,8 +16,10 @@
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package stream
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"sync"
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"testing"
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"time"
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@ -33,17 +35,17 @@ import (
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"github.com/ethereum/go-ethereum/swarm/testutil"
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)
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//constants for random file generation
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// constants for random file generation
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const (
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minFileSize = 2
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maxFileSize = 40
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)
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//This test is a retrieval test for nodes.
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//A configurable number of nodes can be
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//provided to the test.
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//Files are uploaded to nodes, other nodes try to retrieve the file
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//Number of nodes can be provided via commandline too.
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// TestFileRetrieval is a retrieval test for nodes.
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// A configurable number of nodes can be
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// provided to the test.
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// Files are uploaded to nodes, other nodes try to retrieve the file
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// Number of nodes can be provided via commandline too.
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func TestFileRetrieval(t *testing.T) {
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var nodeCount []int
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@ -61,26 +63,57 @@ func TestFileRetrieval(t *testing.T) {
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}
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for _, nc := range nodeCount {
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if err := runFileRetrievalTest(nc); err != nil {
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t.Error(err)
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runFileRetrievalTest(t, nc)
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}
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}
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// TestPureRetrieval tests pure retrieval without syncing
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// A configurable number of nodes and chunks
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// can be provided to the test.
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// A number of random chunks is generated, then stored directly in
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// each node's localstore according to their address.
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// Each chunk is supposed to end up at certain nodes
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// With retrieval we then make sure that every node can actually retrieve
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// the chunks.
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func TestPureRetrieval(t *testing.T) {
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var nodeCount []int
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var chunkCount []int
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if *nodes != 0 && *chunks != 0 {
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nodeCount = []int{*nodes}
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chunkCount = []int{*chunks}
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} else {
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nodeCount = []int{16}
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chunkCount = []int{150}
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if *longrunning {
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nodeCount = append(nodeCount, 32, 64)
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chunkCount = append(chunkCount, 32, 256)
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} else if testutil.RaceEnabled {
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nodeCount = []int{4}
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chunkCount = []int{4}
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}
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}
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for _, nc := range nodeCount {
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for _, c := range chunkCount {
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runPureRetrievalTest(t, nc, c)
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}
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}
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}
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//This test is a retrieval test for nodes.
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//One node is randomly selected to be the pivot node.
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//A configurable number of chunks and nodes can be
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//provided to the test, the number of chunks is uploaded
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//to the pivot node and other nodes try to retrieve the chunk(s).
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//Number of chunks and nodes can be provided via commandline too.
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// TestRetrieval tests retrieval of chunks by random nodes.
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// One node is randomly selected to be the pivot node.
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// A configurable number of chunks and nodes can be
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// provided to the test, the number of chunks is uploaded
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// to the pivot node and other nodes try to retrieve the chunk(s).
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// Number of chunks and nodes can be provided via commandline too.
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func TestRetrieval(t *testing.T) {
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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/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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err := runRetrievalTest(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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runRetrievalTest(t, *chunks, *nodes)
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} else {
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nodeCnt := []int{16}
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chnkCnt := []int{32}
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@ -96,10 +129,7 @@ func TestRetrieval(t *testing.T) {
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for _, n := range nodeCnt {
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for _, c := range chnkCnt {
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t.Run(fmt.Sprintf("TestRetrieval_%d_%d", n, c), func(t *testing.T) {
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err := runRetrievalTest(t, c, n)
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if err != nil {
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t.Fatal(err)
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}
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runRetrievalTest(t, c, n)
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})
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}
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}
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@ -132,15 +162,160 @@ var retrievalSimServiceMap = map[string]simulation.ServiceFunc{
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},
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}
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/*
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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. Nevertheless a health check runs in the
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simulation's `action` function.
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// runPureRetrievalTest by uploading a snapshot,
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// then starting a simulation, distribute chunks to nodes
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// and start retrieval.
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// The snapshot should have 'streamer' in its service list.
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func runPureRetrievalTest(t *testing.T, nodeCount int, chunkCount int) {
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t.Helper()
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// the pure retrieval test needs a different service map, as we want
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// syncing disabled and we don't need to set the syncUpdateDelay
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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: SyncingDisabled,
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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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}
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return r, cleanup, nil
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},
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},
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)
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defer sim.Close()
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log.Info("Initializing test config", "node count", nodeCount)
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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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ctx, cancelSimRun := context.WithTimeout(context.Background(), 3*time.Minute)
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defer cancelSimRun()
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filename := fmt.Sprintf("testing/snapshot_%d.json", nodeCount)
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err := sim.UploadSnapshot(ctx, filename)
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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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result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
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nodeIDs := sim.UpNodeIDs()
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// first iteration: create addresses
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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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// now create random chunks
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chunks := storage.GenerateRandomChunks(int64(chunkSize), chunkCount)
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for _, chunk := range chunks {
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conf.hashes = append(conf.hashes, chunk.Address())
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}
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log.Debug("random chunks generated, mapping keys to nodes")
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// map addresses to nodes
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mapKeysToNodes(conf)
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// second iteration: storing chunks at the peer whose
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// overlay address is closest to a particular chunk's hash
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log.Debug("storing every chunk at correspondent node store")
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for _, id := range nodeIDs {
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// for every chunk for this node (which are only indexes)...
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for _, ch := range conf.idToChunksMap[id] {
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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.(chunk.Store)
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// ...get the actual chunk
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for _, chnk := range chunks {
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if bytes.Equal(chnk.Address(), conf.hashes[ch]) {
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// ...and store it in the localstore
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if _, err = lstore.Put(ctx, chunk.ModePutUpload, chnk); err != nil {
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return 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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// now try to retrieve every chunk from every node
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log.Debug("starting retrieval")
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cnt := 0
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for _, id := range nodeIDs {
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item, ok := sim.NodeItem(id, 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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for _, chunk := range chunks {
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reader, _ := fileStore.Retrieve(context.TODO(), chunk.Address())
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content := make([]byte, chunkSize)
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size, err := reader.Read(content)
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//check chunk size and content
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ok := true
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if err != io.EOF {
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log.Debug("Retrieve error", "err", err, "hash", chunk.Address(), "nodeId", id)
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ok = false
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}
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if size != chunkSize {
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log.Debug("size not equal chunkSize", "size", size, "hash", chunk.Address(), "nodeId", id)
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ok = false
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}
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// skip chunk "metadata" for chunk.Data()
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if !bytes.Equal(content, chunk.Data()[8:]) {
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log.Debug("content not equal chunk data", "hash", chunk.Address(), "nodeId", id)
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ok = false
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}
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if !ok {
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return fmt.Errorf("Expected test to succeed at first run, but failed with chunk not found")
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}
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log.Debug(fmt.Sprintf("chunk with root hash %x successfully retrieved", chunk.Address()))
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cnt++
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}
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}
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log.Info("retrieval terminated, chunks retrieved: ", "count", cnt)
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return nil
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})
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log.Info("Simulation terminated")
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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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// runFileRetrievalTest loads a snapshot file to construct the swarm network.
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// The snapshot should have 'streamer' in its service list.
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func runFileRetrievalTest(t *testing.T, nodeCount int) {
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t.Helper()
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The snapshot should have 'streamer' in its service list.
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*/
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func runFileRetrievalTest(nodeCount int) error {
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sim := simulation.New(retrievalSimServiceMap)
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defer sim.Close()
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@ -160,7 +335,7 @@ func runFileRetrievalTest(nodeCount int) error {
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filename := fmt.Sprintf("testing/snapshot_%d.json", nodeCount)
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err := sim.UploadSnapshot(ctx, filename)
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if err != nil {
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return err
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t.Fatal(err)
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}
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log.Info("Starting simulation")
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@ -180,9 +355,6 @@ func runFileRetrievalTest(nodeCount int) error {
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//an array for the random files
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var randomFiles []string
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//channel to signal when the upload has finished
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//uploadFinished := make(chan struct{})
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//channel to trigger new node checks
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conf.hashes, randomFiles, err = uploadFilesToNodes(sim)
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if err != nil {
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@ -221,24 +393,17 @@ func runFileRetrievalTest(nodeCount int) error {
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log.Info("Simulation terminated")
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if result.Error != nil {
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return result.Error
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t.Fatal(result.Error)
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}
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return nil
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}
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/*
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The test generates the given number of chunks.
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// runRetrievalTest generates the given number of chunks.
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// The test loads a snapshot file to construct the swarm network.
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// The snapshot should have 'streamer' in its service list.
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func runRetrievalTest(t *testing.T, chunkCount int, nodeCount int) {
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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. Nevertheless a health check runs in the
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simulation's `action` function.
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The snapshot should have 'streamer' in its service list.
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*/
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func runRetrievalTest(t *testing.T, chunkCount int, nodeCount int) error {
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t.Helper()
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sim := simulation.New(retrievalSimServiceMap)
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defer sim.Close()
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@ -256,7 +421,7 @@ func runRetrievalTest(t *testing.T, chunkCount int, nodeCount int) error {
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filename := fmt.Sprintf("testing/snapshot_%d.json", nodeCount)
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err := sim.UploadSnapshot(ctx, filename)
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if err != nil {
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return err
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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) error {
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@ -278,8 +443,8 @@ func runRetrievalTest(t *testing.T, chunkCount int, nodeCount int) error {
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if !ok {
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return fmt.Errorf("No localstore")
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}
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store := item.(chunk.Store)
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conf.hashes, err = uploadFileToSingleNodeStore(node.ID(), chunkCount, store)
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lstore := item.(chunk.Store)
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conf.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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@ -314,8 +479,6 @@ func runRetrievalTest(t *testing.T, chunkCount int, nodeCount int) error {
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})
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if result.Error != nil {
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return result.Error
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t.Fatal(result.Error)
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}
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return nil
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}
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