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Fix retrieval tests and simulation backends (#17723)

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* swarm/network/stream: introduced visualized snapshot sync test

* swarm/network/stream: non-existing hash visualization sim

* swarm/network/stream: fixed retrieval tests; new backend for visualization

* swarm/network/stream: cleanup of visualized_snapshot_sync_sim_test.go

* swarm/network/stream: rebased PR on master

* swarm/network/stream: fixed loop logic in retrieval tests

* swarm/network/stream: fixed iterations for snapshot tests

* swarm/network/stream: address PR comments

* swarm/network/stream: addressed PR comments
This commit is contained in:
holisticode 2018-10-08 13:28:44 -05:00 committed by Viktor Trón
parent 72a076840b
commit 11d0ff6578
5 changed files with 394 additions and 224 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
p2p/simulations/events.go
View File

@ -58,6 +58,9 @@ type Event struct {
// Msg is set if the type is EventTypeMsg
Msg *Msg `json:"msg,omitempty"`
//Optionally provide data (currently for simulation frontends only)
Data interface{} `json:"data"`
}
// NewEvent creates a new event for the given object which should be either a

236
swarm/network/stream/snapshot_retrieval_test.go
View File

@ -104,8 +104,47 @@ func TestRetrieval(t *testing.T) {
}
}
/*
var retrievalSimServiceMap = map[string]simulation.ServiceFunc{
"streamer": retrievalStreamerFunc,
}
func retrievalStreamerFunc(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(delivery.RequestFromPeers, true).New
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 3 * time.Second,
DoRetrieve: true,
})
fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
bucket.Store(bucketKeyFileStore, fileStore)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
}
/*
The test loads a snapshot file to construct the swarm network,
assuming that the snapshot file identifies a healthy
kademlia network. Nevertheless a health check runs in the
@ -114,43 +153,7 @@ simulation's `action` function.
The snapshot should have 'streamer' in its service list.
*/
func runFileRetrievalTest(nodeCount int) error {
sim := simulation.New(map[string]simulation.ServiceFunc{
"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
node := ctx.Config.Node()
addr := network.NewAddr(node)
store, datadir, err := createTestLocalStorageForID(node.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(delivery.RequestFromPeers, true).New
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 3 * time.Second,
})
fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
bucket.Store(bucketKeyFileStore, fileStore)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
},
})
sim := simulation.New(retrievalSimServiceMap)
defer sim.Close()
log.Info("Initializing test config")
@ -200,49 +203,29 @@ func runFileRetrievalTest(nodeCount int) error {
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
for !allSuccess {
REPEAT:
for {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
log.Trace(fmt.Sprintf("node has chunk: %s:", chunk))
//check if the expected chunk is indeed in the localstore
var err error
//check on the node's FileStore (netstore)
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No registry")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for i, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the file size and that it corresponds to the generated file size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(len(randomFiles[i])) {
allSuccess = false
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
} else {
log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
}
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
//for each expected file, check if it is in the local store
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No filestore")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for i, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the file size and that it corresponds to the generated file size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(len(randomFiles[i])) {
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
time.Sleep(500 * time.Millisecond)
continue REPEAT
}
log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
}
allSuccess = localSuccess
}
return nil
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {
@ -263,44 +246,7 @@ simulation's `action` function.
The snapshot should have 'streamer' in its service list.
*/
func runRetrievalTest(chunkCount int, nodeCount int) error {
sim := simulation.New(map[string]simulation.ServiceFunc{
"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
node := ctx.Config.Node()
addr := network.NewAddr(node)
store, datadir, err := createTestLocalStorageForID(node.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(delivery.RequestFromPeers, true).New
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 0,
})
fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
bucketKeyFileStore = simulation.BucketKey("filestore")
bucket.Store(bucketKeyFileStore, fileStore)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
},
})
sim := simulation.New(retrievalSimServiceMap)
defer sim.Close()
conf := &synctestConfig{}
@ -330,8 +276,6 @@ func runRetrievalTest(chunkCount int, nodeCount int) error {
conf.addrToIDMap[string(a)] = n
}
//an array for the random files
var randomFiles []string
//this is the node selected for upload
node := sim.RandomUpNode()
item, ok := sim.NodeItem(node.ID, bucketKeyStore)
@ -349,49 +293,31 @@ func runRetrievalTest(chunkCount int, nodeCount int) error {
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
for !allSuccess {
REPEAT:
for {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
log.Trace(fmt.Sprintf("node has chunk: %s:", chunk))
//check if the expected chunk is indeed in the localstore
var err error
//check on the node's FileStore (netstore)
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No registry")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for i, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the file size and that it corresponds to the generated file size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(len(randomFiles[i])) {
allSuccess = false
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
} else {
log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
}
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
//check on the node's FileStore (netstore)
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No filestore")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for _, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the chunk size and that it corresponds to the generated chunk size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(chunkSize) {
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id, "size", s)
time.Sleep(500 * time.Millisecond)
continue REPEAT
}
log.Debug(fmt.Sprintf("Chunk with root hash %x successfully retrieved", hash))
}
allSuccess = localSuccess
}
// all nodes and files found, exit loop and return without error
return nil
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {

152
swarm/network/stream/snapshot_sync_test.go
View File

@ -31,6 +31,7 @@ import (
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/simulations"
"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
"github.com/ethereum/go-ethereum/swarm/network"
"github.com/ethereum/go-ethereum/swarm/network/simulation"
@ -50,6 +51,17 @@ type synctestConfig struct {
addrToIDMap map[string]enode.ID
}
const (
// EventTypeNode is the type of event emitted when a node is either
// created, started or stopped
EventTypeChunkCreated simulations.EventType = "chunkCreated"
EventTypeChunkOffered simulations.EventType = "chunkOffered"
EventTypeChunkWanted simulations.EventType = "chunkWanted"
EventTypeChunkDelivered simulations.EventType = "chunkDelivered"
EventTypeChunkArrived simulations.EventType = "chunkArrived"
EventTypeSimTerminated simulations.EventType = "simTerminated"
)
// Tests in this file should not request chunks from peers.
// This function will panic indicating that there is a problem if request has been made.
func dummyRequestFromPeers(_ context.Context, req *network.Request) (*enode.ID, chan struct{}, error) {
@ -131,41 +143,46 @@ func TestSyncingViaDirectSubscribe(t *testing.T) {
}
}
func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
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
var simServiceMap = map[string]simulation.ServiceFunc{
"streamer": streamerFunc,
}
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 3 * time.Second,
})
bucket.Store(bucketKeyRegistry, r)
func streamerFunc(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
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
},
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 3 * time.Second,
})
bucket.Store(bucketKeyRegistry, r)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
}
func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
sim := simulation.New(simServiceMap)
defer sim.Close()
log.Info("Initializing test config")
@ -204,7 +221,17 @@ func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
}
}()
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
result := runSim(conf, ctx, sim, chunkCount)
if result.Error != nil {
t.Fatal(result.Error)
}
log.Info("Simulation ended")
}
func runSim(conf *synctestConfig, ctx context.Context, sim *simulation.Simulation, chunkCount int) simulation.Result {
return sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
nodeIDs := sim.UpNodeIDs()
for _, n := range nodeIDs {
//get the kademlia overlay address from this ID
@ -229,12 +256,19 @@ func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
if err != nil {
return err
}
for _, h := range hashes {
evt := &simulations.Event{
Type: EventTypeChunkCreated,
Node: sim.Net.GetNode(node.ID),
Data: h.String(),
}
sim.Net.Events().Send(evt)
}
conf.hashes = append(conf.hashes, hashes...)
mapKeysToNodes(conf)
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
var gDir string
var globalStore *mockdb.GlobalStore
if *useMockStore {
@ -250,12 +284,11 @@ func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
}
}()
}
for !allSuccess {
allSuccess = true
REPEAT:
for {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
@ -277,29 +310,22 @@ func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
// Do not get crazy with logging the warn message
time.Sleep(500 * time.Millisecond)
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
continue REPEAT
}
}
if !localSuccess {
allSuccess = false
break
evt := &simulations.Event{
Type: EventTypeChunkArrived,
Node: sim.Net.GetNode(id),
Data: chunk.String(),
}
sim.Net.Events().Send(evt)
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
}
return nil
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {
t.Fatal(result.Error)
}
log.Info("Simulation ended")
}
/*
@ -459,13 +485,11 @@ func testSyncingViaDirectSubscribe(t *testing.T, chunkCount int, nodeCount int)
}
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
for !allSuccess {
allSuccess = true
REPEAT:
for {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
@ -487,23 +511,15 @@ func testSyncingViaDirectSubscribe(t *testing.T, chunkCount int, nodeCount int)
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
// Do not get crazy with logging the warn message
time.Sleep(500 * time.Millisecond)
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
continue REPEAT
}
}
if !localSuccess {
allSuccess = false
break
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
}
return nil
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {

2
swarm/network/stream/streamer_test.go
View File

@ -522,7 +522,7 @@ func TestStreamerDownstreamCorruptHashesMsgExchange(t *testing.T) {
}
expectedError := errors.New("Message handler error: (msg code 1): error invalid hashes length (len: 40)")
if err := tester.TestDisconnected(&p2ptest.Disconnect{Peer: tester.Nodes[0].ID(), Error: expectedError}); err != nil {
if err := tester.TestDisconnected(&p2ptest.Disconnect{Peer: node.ID(), Error: expectedError}); err != nil {
t.Fatal(err)
}
}

225
swarm/network/stream/visualized_snapshot_sync_sim_test.go Normal file
View File

@ -0,0 +1,225 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build withserver
package stream
import (
"context"
"fmt"
"testing"
"time"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/p2p/simulations"
"github.com/ethereum/go-ethereum/swarm/log"
"github.com/ethereum/go-ethereum/swarm/network/simulation"
"github.com/ethereum/go-ethereum/swarm/storage"
)
/*
The tests in this file need to be executed with
-tags=withserver
Also, they will stall if executed stand-alone, because they wait
for the visualization frontend to send a POST /runsim message.
*/
//setup the sim, evaluate nodeCount and chunkCount and create the sim
func setupSim(serviceMap map[string]simulation.ServiceFunc) (int, int, *simulation.Simulation) {
nodeCount := *nodes
chunkCount := *chunks
if nodeCount == 0 || chunkCount == 0 {
nodeCount = 32
chunkCount = 1
}
//setup the simulation with server, which means the sim won't run
//until it receives a POST /runsim from the frontend
sim := simulation.New(serviceMap).WithServer(":8888")
return nodeCount, chunkCount, sim
}
//watch for disconnections and wait for healthy
func watchSim(sim *simulation.Simulation) (context.Context, context.CancelFunc) {
ctx, cancelSimRun := context.WithTimeout(context.Background(), 1*time.Minute)
if _, err := sim.WaitTillHealthy(ctx, 2); err != nil {
panic(err)
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeDrop),
)
go func() {
for d := range disconnections {
log.Error("peer drop", "node", d.NodeID, "peer", d.Event.Peer)
panic("unexpected disconnect")
cancelSimRun()
}
}()
return ctx, cancelSimRun
}
//This test requests bogus hashes into the network
func TestNonExistingHashesWithServer(t *testing.T) {
nodeCount, _, sim := setupSim(retrievalSimServiceMap)
defer sim.Close()
err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount))
if err != nil {
panic(err)
}
ctx, cancelSimRun := watchSim(sim)
defer cancelSimRun()
//in order to get some meaningful visualization, it is beneficial
//to define a minimum duration of this test
testDuration := 20 * time.Second
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
//check on the node's FileStore (netstore)
id := sim.RandomUpNode().ID
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
t.Fatalf("No filestore")
}
fileStore := item.(*storage.FileStore)
//create a bogus hash
fakeHash := storage.GenerateRandomChunk(1000).Address()
//try to retrieve it - will propagate RetrieveRequestMsg into the network
reader, _ := fileStore.Retrieve(context.TODO(), fakeHash)
if _, err := reader.Size(ctx, nil); err != nil {
log.Debug("expected error for non-existing chunk")
}
//sleep so that the frontend can have something to display
time.Sleep(testDuration)
return nil
})
if result.Error != nil {
sendSimTerminatedEvent(sim)
t.Fatal(result.Error)
}
sendSimTerminatedEvent(sim)
}
//send a termination event to the frontend
func sendSimTerminatedEvent(sim *simulation.Simulation) {
evt := &simulations.Event{
Type: EventTypeSimTerminated,
Control: false,
}
sim.Net.Events().Send(evt)
}
//This test is the same as the snapshot sync test,
//but with a HTTP server
//It also sends some custom events so that the frontend
//can visualize messages like SendOfferedMsg, WantedHashesMsg, DeliveryMsg
func TestSnapshotSyncWithServer(t *testing.T) {
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)
//map of overlay address to discover ID
conf.addrToIDMap = make(map[string]discover.NodeID)
//array where the generated chunk hashes will be stored
conf.hashes = make([]storage.Address, 0)
err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount))
if err != nil {
panic(err)
}
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)
//send terminated event
evt := &simulations.Event{
Type: EventTypeSimTerminated,
Control: false,
}
sim.Net.Events().Send(evt)
if result.Error != nil {
panic(result.Error)
}
close(quit)
log.Info("Simulation ended")
}