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swarm: fix network/stream data races (#19051)

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* swarm/network/stream: newStreamerTester cleanup only if err is nil

* swarm/network/stream: raise newStreamerTester waitForPeers timeout

* swarm/network/stream: fix data races in GetPeerSubscriptions

* swarm/storage: prevent data race on LDBStore.batchesC

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461775049

* swarm/network/stream: fix TestGetSubscriptionsRPC data race

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461768477

* swarm/network/stream: correctly use Simulation.Run callback

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461783804

* swarm/network: protect addrCountC in Kademlia.AddrCountC function

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-462273444

* p2p/simulations: fix a deadlock calling getRandomNode with lock

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-462317407

* swarm/network/stream: terminate disconnect goruotines in tests

* swarm/network/stream: reduce memory consumption when testing data races

* swarm/network/stream: add watchDisconnections helper function

* swarm/network/stream: add concurrent counter for tests

* swarm/network/stream: rename race/norace test files and use const

* swarm/network/stream: remove watchSim and its panic

* swarm/network/stream: pass context in watchDisconnections

* swarm/network/stream: add concurrent safe bool for watchDisconnections

* swarm/storage: fix LDBStore.batchesC data race by not closing it
This commit is contained in:
Janoš Guljaš 2019-02-13 13:03:23 +01:00 committed by Viktor Trón
parent d596bea2d5
commit 3fd6db2bf6
14 changed files with 274 additions and 197 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
p2p/simulations/network.go
View File

@ -461,7 +461,7 @@ func (net *Network) getRandomNode(ids []enode.ID, excludeIDs []enode.ID) *Node {
if l == 0 {
return nil
}
return net.GetNode(filtered[rand.Intn(l)])
return net.getNode(filtered[rand.Intn(l)])
}
func filterIDs(ids []enode.ID, excludeIDs []enode.ID) []enode.ID {

3
swarm/network/kademlia.go
View File

@ -353,6 +353,9 @@ func (k *Kademlia) sendNeighbourhoodDepthChange() {
// Not receiving from the returned channel will block Register function
// when address count value changes.
func (k *Kademlia) AddrCountC() <-chan int {
k.lock.Lock()
defer k.lock.Unlock()
if k.addrCountC == nil {
k.addrCountC = make(chan int)
}

62
swarm/network/stream/common_test.go
View File

@ -151,7 +151,7 @@ func newStreamerTester(registryOptions *RegistryOptions) (*p2ptest.ProtocolTeste
// temp datadir
datadir, err := ioutil.TempDir("", "streamer")
if err != nil {
return nil, nil, nil, func() {}, err
return nil, nil, nil, nil, err
}
removeDataDir := func() {
os.RemoveAll(datadir)
@ -163,12 +163,14 @@ func newStreamerTester(registryOptions *RegistryOptions) (*p2ptest.ProtocolTeste
localStore, err := storage.NewTestLocalStoreForAddr(params)
if err != nil {
return nil, nil, nil, removeDataDir, err
removeDataDir()
return nil, nil, nil, nil, err
}
netStore, err := storage.NewNetStore(localStore, nil)
if err != nil {
return nil, nil, nil, removeDataDir, err
removeDataDir()
return nil, nil, nil, nil, err
}
delivery := NewDelivery(to, netStore)
@ -180,8 +182,9 @@ func newStreamerTester(registryOptions *RegistryOptions) (*p2ptest.ProtocolTeste
}
protocolTester := p2ptest.NewProtocolTester(addr.ID(), 1, streamer.runProtocol)
err = waitForPeers(streamer, 1*time.Second, 1)
err = waitForPeers(streamer, 10*time.Second, 1)
if err != nil {
teardown()
return nil, nil, nil, nil, errors.New("timeout: peer is not created")
}
@ -317,3 +320,54 @@ func createTestLocalStorageForID(id enode.ID, addr *network.BzzAddr) (storage.Ch
}
return store, datadir, nil
}
// watchDisconnections receives simulation peer events in a new goroutine and sets atomic value
// disconnected to true in case of a disconnect event.
func watchDisconnections(ctx context.Context, sim *simulation.Simulation) (disconnected *boolean) {
log.Debug("Watching for disconnections")
disconnections := sim.PeerEvents(
ctx,
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
disconnected = new(boolean)
go func() {
for {
select {
case <-ctx.Done():
return
case d := <-disconnections:
if d.Error != nil {
log.Error("peer drop event error", "node", d.NodeID, "peer", d.PeerID, "err", d.Error)
} else {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
}
disconnected.set(true)
}
}
}()
return disconnected
}
// boolean is used to concurrently set
// and read a boolean value.
type boolean struct {
v bool
mu sync.RWMutex
}
// set sets the value.
func (b *boolean) set(v bool) {
b.mu.Lock()
defer b.mu.Unlock()
b.v = v
}
// bool reads the value.
func (b *boolean) bool() bool {
b.mu.RLock()
defer b.mu.RUnlock()
return b.v
}

71
swarm/network/stream/delivery_test.go
View File

@ -22,7 +22,6 @@ import (
"errors"
"fmt"
"sync"
"sync/atomic"
"testing"
"time"
@ -48,10 +47,10 @@ func TestStreamerRetrieveRequest(t *testing.T) {
Syncing: SyncingDisabled,
}
tester, streamer, _, teardown, err := newStreamerTester(regOpts)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -100,10 +99,10 @@ func TestStreamerUpstreamRetrieveRequestMsgExchangeWithoutStore(t *testing.T) {
Retrieval: RetrievalEnabled,
Syncing: SyncingDisabled, //do no syncing
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -172,10 +171,10 @@ func TestStreamerUpstreamRetrieveRequestMsgExchange(t *testing.T) {
Retrieval: RetrievalEnabled,
Syncing: SyncingDisabled,
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -362,10 +361,10 @@ func TestStreamerDownstreamChunkDeliveryMsgExchange(t *testing.T) {
Retrieval: RetrievalDisabled,
Syncing: SyncingDisabled,
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterClientFunc("foo", func(p *Peer, t string, live bool) (Client, error) {
return &testClient{
@ -485,7 +484,8 @@ func testDeliveryFromNodes(t *testing.T, nodes, chunkCount int, skipCheck bool)
}
log.Info("Starting simulation")
ctx := context.Background()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) (err error) {
nodeIDs := sim.UpNodeIDs()
//determine the pivot node to be the first node of the simulation
@ -548,28 +548,11 @@ func testDeliveryFromNodes(t *testing.T, nodes, chunkCount int, skipCheck bool)
retErrC <- err
}()
log.Debug("Watching for disconnections")
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
var disconnected atomic.Value
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
disconnected.Store(true)
}
}
}()
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil {
if yes, ok := disconnected.Load().(bool); ok && yes {
if err != nil && disconnected.bool() {
err = errors.New("disconnect events received")
}
}
}()
//finally check that the pivot node gets all chunks via the root hash
@ -589,7 +572,7 @@ func testDeliveryFromNodes(t *testing.T, nodes, chunkCount int, skipCheck bool)
return fmt.Errorf("Test failed, chunks not available on all nodes")
}
if err := <-retErrC; err != nil {
t.Fatalf("requesting chunks: %v", err)
return fmt.Errorf("requesting chunks: %v", err)
}
log.Debug("Test terminated successfully")
return nil
@ -657,21 +640,22 @@ func benchmarkDeliveryFromNodes(b *testing.B, nodes, chunkCount int, skipCheck b
b.Fatal(err)
}
ctx := context.Background()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) (err error) {
nodeIDs := sim.UpNodeIDs()
node := nodeIDs[len(nodeIDs)-1]
item, ok := sim.NodeItem(node, bucketKeyFileStore)
if !ok {
b.Fatal("No filestore")
return errors.New("No filestore")
}
remoteFileStore := item.(*storage.FileStore)
pivotNode := nodeIDs[0]
item, ok = sim.NodeItem(pivotNode, bucketKeyNetStore)
if !ok {
b.Fatal("No filestore")
return errors.New("No filestore")
}
netStore := item.(*storage.NetStore)
@ -679,27 +663,11 @@ func benchmarkDeliveryFromNodes(b *testing.B, nodes, chunkCount int, skipCheck b
return err
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
var disconnected atomic.Value
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
disconnected.Store(true)
}
}
}()
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil {
if yes, ok := disconnected.Load().(bool); ok && yes {
if err != nil && disconnected.bool() {
err = errors.New("disconnect events received")
}
}
}()
// benchmark loop
b.ResetTimer()
@ -713,12 +681,12 @@ func benchmarkDeliveryFromNodes(b *testing.B, nodes, chunkCount int, skipCheck b
ctx := context.TODO()
hash, wait, err := remoteFileStore.Store(ctx, testutil.RandomReader(i, chunkSize), int64(chunkSize), false)
if err != nil {
b.Fatalf("expected no error. got %v", err)
return fmt.Errorf("store: %v", err)
}
// wait until all chunks stored
err = wait(ctx)
if err != nil {
b.Fatalf("expected no error. got %v", err)
return fmt.Errorf("wait store: %v", err)
}
// collect the hashes
hashes[i] = hash
@ -754,10 +722,7 @@ func benchmarkDeliveryFromNodes(b *testing.B, nodes, chunkCount int, skipCheck b
break Loop
}
}
if err != nil {
b.Fatal(err)
}
return nil
return err
})
if result.Error != nil {
b.Fatal(result.Error)

28
swarm/network/stream/intervals_test.go
View File

@ -22,7 +22,6 @@ import (
"errors"
"fmt"
"sync"
"sync/atomic"
"testing"
"time"
@ -118,13 +117,11 @@ func testIntervals(t *testing.T, live bool, history *Range, skipCheck bool) {
_, wait, err := fileStore.Store(ctx, testutil.RandomReader(1, size), int64(size), false)
if err != nil {
log.Error("Store error: %v", "err", err)
t.Fatal(err)
return fmt.Errorf("store: %v", err)
}
err = wait(ctx)
if err != nil {
log.Error("Wait error: %v", "err", err)
t.Fatal(err)
return fmt.Errorf("wait store: %v", err)
}
item, ok = sim.NodeItem(checker, bucketKeyRegistry)
@ -136,33 +133,16 @@ func testIntervals(t *testing.T, live bool, history *Range, skipCheck bool) {
liveErrC := make(chan error)
historyErrC := make(chan error)
log.Debug("Watching for disconnections")
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
err = registry.Subscribe(storer, NewStream(externalStreamName, "", live), history, Top)
if err != nil {
return err
}
var disconnected atomic.Value
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
disconnected.Store(true)
}
}
}()
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil {
if yes, ok := disconnected.Load().(bool); ok && yes {
if err != nil && disconnected.bool() {
err = errors.New("disconnect events received")
}
}
}()
go func() {

8
swarm/network/stream/lightnode_test.go
View File

@ -29,10 +29,10 @@ func TestLigthnodeRetrieveRequestWithRetrieve(t *testing.T) {
Syncing: SyncingDisabled,
}
tester, _, _, teardown, err := newStreamerTester(registryOptions)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -68,10 +68,10 @@ func TestLigthnodeRetrieveRequestWithoutRetrieve(t *testing.T) {
Syncing: SyncingDisabled,
}
tester, _, _, teardown, err := newStreamerTester(registryOptions)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -112,10 +112,10 @@ func TestLigthnodeRequestSubscriptionWithSync(t *testing.T) {
Syncing: SyncingRegisterOnly,
}
tester, _, _, teardown, err := newStreamerTester(registryOptions)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]
@ -157,10 +157,10 @@ func TestLigthnodeRequestSubscriptionWithoutSync(t *testing.T) {
Syncing: SyncingDisabled,
}
tester, _, _, teardown, err := newStreamerTester(registryOptions)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
node := tester.Nodes[0]

24
swarm/network/stream/norace_test.go Normal file
View File

@ -0,0 +1,24 @@
// Copyright 2019 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 !race
package stream
// Provide a flag to reduce the scope of tests when running them
// with race detector. Some of the tests are doing a lot of allocations
// on the heap, and race detector uses much more memory to track them.
const raceTest = false

23
swarm/network/stream/race_test.go Normal file
View File

@ -0,0 +1,23 @@
// Copyright 2019 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 race
package stream
// Reduce the scope of some tests when running with race detector,
// as it raises the memory consumption significantly.
const raceTest = true

58
swarm/network/stream/snapshot_sync_test.go
View File

@ -17,11 +17,12 @@ package stream
import (
"context"
"errors"
"fmt"
"io/ioutil"
"os"
"runtime"
"sync"
"sync/atomic"
"testing"
"time"
@ -92,6 +93,15 @@ func TestSyncingViaGlobalSync(t *testing.T) {
if *longrunning {
chnkCnt = []int{1, 8, 32, 256, 1024}
nodeCnt = []int{16, 32, 64, 128, 256}
} else if raceTest {
// TestSyncingViaGlobalSync allocates a lot of memory
// with race detector. By reducing the number of chunks
// and nodes, memory consumption is lower and data races
// are still checked, while correctness of syncing is
// tested with more chunks and nodes in regular (!race)
// tests.
chnkCnt = []int{4}
nodeCnt = []int{16}
} else {
//default test
chnkCnt = []int{4, 32}
@ -113,7 +123,23 @@ var simServiceMap = map[string]simulation.ServiceFunc{
return nil, nil, err
}
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
var dir string
var store *state.DBStore
if raceTest {
// Use on-disk DBStore to reduce memory consumption in race tests.
dir, err = ioutil.TempDir("", "swarm-stream-")
if err != nil {
return nil, nil, err
}
store, err = state.NewDBStore(dir)
if err != nil {
return nil, nil, err
}
} else {
store = state.NewInmemoryStore()
}
r := NewRegistry(addr.ID(), delivery, netStore, store, &RegistryOptions{
Retrieval: RetrievalDisabled,
Syncing: SyncingAutoSubscribe,
SyncUpdateDelay: 3 * time.Second,
@ -156,36 +182,24 @@ func testSyncingViaGlobalSync(t *testing.T, chunkCount int, nodeCount int) {
t.Fatal(err)
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
var disconnected atomic.Value
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
disconnected.Store(true)
}
}
}()
result := runSim(conf, ctx, sim, chunkCount)
if result.Error != nil {
t.Fatal(result.Error)
}
if yes, ok := disconnected.Load().(bool); ok && yes {
t.Fatal("disconnect events received")
}
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 {
return sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) (err error) {
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil && disconnected.bool() {
err = errors.New("disconnect events received")
}
}()
nodeIDs := sim.UpNodeIDs()
for _, n := range nodeIDs {
//get the kademlia overlay address from this ID

6
swarm/network/stream/stream.go
View File

@ -939,16 +939,22 @@ It returns a map of node IDs with an array of string representations of Stream o
func (api *API) GetPeerSubscriptions() map[string][]string {
//create the empty map
pstreams := make(map[string][]string)
//iterate all streamer peers
api.streamer.peersMu.RLock()
defer api.streamer.peersMu.RUnlock()
for id, p := range api.streamer.peers {
var streams []string
//every peer has a map of stream servers
//every stream server represents a subscription
p.serverMu.RLock()
for s := range p.servers {
//append the string representation of the stream
//to the list for this peer
streams = append(streams, s.String())
}
p.serverMu.RUnlock()
//set the array of stream servers to the map
pstreams[id.String()] = streams
}

70
swarm/network/stream/streamer_test.go
View File

@ -41,10 +41,10 @@ import (
func TestStreamerSubscribe(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", true)
err = streamer.Subscribe(tester.Nodes[0].ID(), stream, NewRange(0, 0), Top)
@ -55,10 +55,10 @@ func TestStreamerSubscribe(t *testing.T) {
func TestStreamerRequestSubscription(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", false)
err = streamer.RequestSubscription(tester.Nodes[0].ID(), stream, &Range{}, Top)
@ -146,10 +146,10 @@ func (self *testServer) Close() {
func TestStreamerDownstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterClientFunc("foo", func(p *Peer, t string, live bool) (Client, error) {
return newTestClient(t), nil
@ -239,10 +239,10 @@ func TestStreamerDownstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
func TestStreamerUpstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", false)
@ -306,10 +306,10 @@ func TestStreamerUpstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
func TestStreamerUpstreamSubscribeUnsubscribeMsgExchangeLive(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", true)
@ -372,10 +372,10 @@ func TestStreamerUpstreamSubscribeUnsubscribeMsgExchangeLive(t *testing.T) {
func TestStreamerUpstreamSubscribeErrorMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
return newTestServer(t, 0), nil
@ -416,10 +416,10 @@ func TestStreamerUpstreamSubscribeErrorMsgExchange(t *testing.T) {
func TestStreamerUpstreamSubscribeLiveAndHistory(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", true)
@ -479,10 +479,10 @@ func TestStreamerUpstreamSubscribeLiveAndHistory(t *testing.T) {
func TestStreamerDownstreamCorruptHashesMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", true)
@ -544,10 +544,10 @@ func TestStreamerDownstreamCorruptHashesMsgExchange(t *testing.T) {
func TestStreamerDownstreamOfferedHashesMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
stream := NewStream("foo", "", true)
@ -643,10 +643,10 @@ func TestStreamerDownstreamOfferedHashesMsgExchange(t *testing.T) {
func TestStreamerRequestSubscriptionQuitMsgExchange(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(nil)
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
return newTestServer(t, 10), nil
@ -780,10 +780,10 @@ func TestMaxPeerServersWithUnsubscribe(t *testing.T) {
Syncing: SyncingDisabled,
MaxPeerServers: maxPeerServers,
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
return newTestServer(t, 0), nil
@ -854,10 +854,10 @@ func TestMaxPeerServersWithoutUnsubscribe(t *testing.T) {
tester, streamer, _, teardown, err := newStreamerTester(&RegistryOptions{
MaxPeerServers: maxPeerServers,
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
return newTestServer(t, 0), nil
@ -940,10 +940,10 @@ func TestHasPriceImplementation(t *testing.T) {
Retrieval: RetrievalDisabled,
Syncing: SyncingDisabled,
})
defer teardown()
if err != nil {
t.Fatal(err)
}
defer teardown()
if r.prices == nil {
t.Fatal("No prices implementation available for the stream protocol")
@ -1177,6 +1177,7 @@ starts the simulation, waits for SyncUpdateDelay in order to kick off
stream registration, then tests that there are subscriptions.
*/
func TestGetSubscriptionsRPC(t *testing.T) {
// arbitrarily set to 4
nodeCount := 4
// run with more nodes if `longrunning` flag is set
@ -1188,19 +1189,16 @@ func TestGetSubscriptionsRPC(t *testing.T) {
// holds the msg code for SubscribeMsg
var subscribeMsgCode uint64
var ok bool
var expectedMsgCount = 0
var expectedMsgCount counter
// this channel signalizes that the expected amount of subscriptiosn is done
allSubscriptionsDone := make(chan struct{})
lock := sync.RWMutex{}
// after the test, we need to reset the subscriptionFunc to the default
defer func() { subscriptionFunc = doRequestSubscription }()
// we use this subscriptionFunc for this test: just increases count and calls the actual subscription
subscriptionFunc = func(r *Registry, p *network.Peer, bin uint8, subs map[enode.ID]map[Stream]struct{}) bool {
lock.Lock()
expectedMsgCount++
lock.Unlock()
expectedMsgCount.inc()
doRequestSubscription(r, p, bin, subs)
return true
}
@ -1290,24 +1288,24 @@ func TestGetSubscriptionsRPC(t *testing.T) {
select {
case <-allSubscriptionsDone:
case <-ctx.Done():
t.Fatal("Context timed out")
return errors.New("Context timed out")
}
log.Debug("Expected message count: ", "expectedMsgCount", expectedMsgCount)
log.Debug("Expected message count: ", "expectedMsgCount", expectedMsgCount.count())
//now iterate again, this time we call each node via RPC to get its subscriptions
realCount := 0
for _, node := range nodes {
//create rpc client
client, err := node.Client()
if err != nil {
t.Fatalf("create node 1 rpc client fail: %v", err)
return fmt.Errorf("create node 1 rpc client fail: %v", err)
}
//ask it for subscriptions
pstreams := make(map[string][]string)
err = client.Call(&pstreams, "stream_getPeerSubscriptions")
if err != nil {
t.Fatal(err)
return fmt.Errorf("client call stream_getPeerSubscriptions: %v", err)
}
//length of the subscriptions can not be smaller than number of peers
log.Debug("node subscriptions", "node", node.String())
@ -1324,8 +1322,9 @@ func TestGetSubscriptionsRPC(t *testing.T) {
}
}
// every node is mutually subscribed to each other, so the actual count is half of it
if realCount/2 != expectedMsgCount {
return fmt.Errorf("Real subscriptions and expected amount don't match; real: %d, expected: %d", realCount/2, expectedMsgCount)
emc := expectedMsgCount.count()
if realCount/2 != emc {
return fmt.Errorf("Real subscriptions and expected amount don't match; real: %d, expected: %d", realCount/2, emc)
}
return nil
})
@ -1333,3 +1332,26 @@ func TestGetSubscriptionsRPC(t *testing.T) {
t.Fatal(result.Error)
}
}
// counter is used to concurrently increment
// and read an integer value.
type counter struct {
v int
mu sync.RWMutex
}
// Increment the counter.
func (c *counter) inc() {
c.mu.Lock()
defer c.mu.Unlock()
c.v++
}
// Read the counter value.
func (c *counter) count() int {
c.mu.RLock()
defer c.mu.RUnlock()
return c.v
}

57
swarm/network/stream/syncer_test.go
View File

@ -22,8 +22,8 @@ import (
"fmt"
"io/ioutil"
"math"
"os"
"sync"
"sync/atomic"
"testing"
"time"
@ -44,10 +44,16 @@ const dataChunkCount = 200
func TestSyncerSimulation(t *testing.T) {
testSyncBetweenNodes(t, 2, dataChunkCount, true, 1)
// This test uses much more memory when running with
// race detector. Allow it to finish successfully by
// reducing its scope, and still check for data races
// with the smallest number of nodes.
if !raceTest {
testSyncBetweenNodes(t, 4, dataChunkCount, true, 1)
testSyncBetweenNodes(t, 8, dataChunkCount, true, 1)
testSyncBetweenNodes(t, 16, dataChunkCount, true, 1)
}
}
func createMockStore(globalStore mock.GlobalStorer, id enode.ID, addr *network.BzzAddr) (lstore storage.ChunkStore, datadir string, err error) {
address := common.BytesToAddress(id.Bytes())
@ -80,7 +86,23 @@ func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, p
return nil, nil, err
}
r := NewRegistry(addr.ID(), delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
var dir string
var store *state.DBStore
if raceTest {
// Use on-disk DBStore to reduce memory consumption in race tests.
dir, err = ioutil.TempDir("", "swarm-stream-")
if err != nil {
return nil, nil, err
}
store, err = state.NewDBStore(dir)
if err != nil {
return nil, nil, err
}
} else {
store = state.NewInmemoryStore()
}
r := NewRegistry(addr.ID(), delivery, netStore, store, &RegistryOptions{
Retrieval: RetrievalDisabled,
Syncing: SyncingAutoSubscribe,
SkipCheck: skipCheck,
@ -89,6 +111,9 @@ func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, p
cleanup = func() {
r.Close()
clean()
if dir != "" {
os.RemoveAll(dir)
}
}
return r, cleanup, nil
@ -114,27 +139,11 @@ func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, p
nodeIndex[id] = i
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
var disconnected atomic.Value
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
disconnected.Store(true)
}
}
}()
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil {
if yes, ok := disconnected.Load().(bool); ok && yes {
if err != nil && disconnected.bool() {
err = errors.New("disconnect events received")
}
}
}()
// each node Subscribes to each other's swarmChunkServerStreamName
@ -142,7 +151,7 @@ func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, p
id := nodeIDs[j]
client, err := sim.Net.GetNode(id).Client()
if err != nil {
t.Fatal(err)
return fmt.Errorf("node %s client: %v", id, err)
}
sid := nodeIDs[j+1]
client.CallContext(ctx, nil, "stream_subscribeStream", sid, NewStream("SYNC", FormatSyncBinKey(1), false), NewRange(0, 0), Top)
@ -158,7 +167,7 @@ func testSyncBetweenNodes(t *testing.T, nodes, chunkCount int, skipCheck bool, p
size := chunkCount * chunkSize
_, wait, err := fileStore.Store(ctx, testutil.RandomReader(j, size), int64(size), false)
if err != nil {
t.Fatal(err.Error())
return fmt.Errorf("fileStore.Store: %v", err)
}
wait(ctx)
}
@ -273,7 +282,7 @@ func TestSameVersionID(t *testing.T) {
//the peers should connect, thus getting the peer should not return nil
if registry.getPeer(nodes[1]) == nil {
t.Fatal("Expected the peer to not be nil, but it is")
return errors.New("Expected the peer to not be nil, but it is")
}
return nil
})
@ -338,7 +347,7 @@ func TestDifferentVersionID(t *testing.T) {
//getting the other peer should fail due to the different version numbers
if registry.getPeer(nodes[1]) != nil {
t.Fatal("Expected the peer to be nil, but it is not")
return errors.New("Expected the peer to be nil, but it is not")
}
return nil
})

44
swarm/network/stream/visualized_snapshot_sync_sim_test.go
View File

@ -66,31 +66,6 @@ func setupSim(serviceMap map[string]simulation.ServiceFunc) (int, int, *simulati
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); err != nil {
panic(err)
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Drop(),
)
go func() {
for d := range disconnections {
log.Error("peer drop", "node", d.NodeID, "peer", d.PeerID)
panic("unexpected disconnect")
cancelSimRun()
}
}()
return ctx, cancelSimRun
}
//This test requests bogus hashes into the network
func TestNonExistingHashesWithServer(t *testing.T) {
@ -102,19 +77,25 @@ func TestNonExistingHashesWithServer(t *testing.T) {
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 {
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) (err error) {
disconnected := watchDisconnections(ctx, sim)
defer func() {
if err != nil {
if yes, ok := disconnected.Load().(bool); ok && yes {
err = errors.New("disconnect events received")
}
}
}()
//check on the node's FileStore (netstore)
id := sim.Net.GetRandomUpNode().ID()
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
t.Fatalf("No filestore")
return errors.New("No filestore")
}
fileStore := item.(*storage.FileStore)
//create a bogus hash
@ -213,9 +194,6 @@ func TestSnapshotSyncWithServer(t *testing.T) {
panic(err)
}
ctx, cancelSimRun := watchSim(sim)
defer cancelSimRun()
//run the sim
result := runSim(conf, ctx, sim, chunkCount)

1
swarm/storage/ldbstore.go
View File

@ -1049,7 +1049,6 @@ func (s *LDBStore) Close() {
s.lock.Unlock()
// force writing out current batch
s.writeCurrentBatch()
close(s.batchesC)
s.db.Close()
}