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swarm/pss: eliminated the global variables

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This commit is contained in:
Vlad 2019-03-12 20:49:14 +04:00
parent 26ac00d698
commit 3fcebc1c80
1 changed files with 108 additions and 119 deletions
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201
swarm/pss/prox_test.go
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@ -30,7 +30,7 @@ import (
)
// needed to make the enode id of the receiving node available to the handler for triggers
type handlerContextFunc func(*adapters.NodeConfig) *handler
type handlerContextFunc func(*testData, *adapters.NodeConfig) *handler
// struct to notify reception of messages to simulation driver
// TODO To make code cleaner:
@ -41,18 +41,13 @@ type handlerNotification struct {
serial uint64
}
var (
pof = pot.DefaultPof(256) // generate messages and index them
topic = BytesToTopic([]byte{0x00, 0x00, 0x06, 0x82})
mu sync.Mutex // keeps handlerDone in sync
type testData struct {
mu sync.Mutex
sim *simulation.Simulation
mx sync.Mutex // prevents data race for the test variables
handlerDone bool // set to true on termination of the simulation run
requiredMessages int
allowedMessages int
messageCount int
kademlias map[enode.ID]*network.Kademlia
nodeAddrs map[enode.ID][]byte // make predictable overlay addresses from the generated random enode ids
recipients map[int][]enode.ID // for logging output only
@ -65,57 +60,36 @@ var (
errC chan error // error to pass to main sim thread
msgC chan handlerNotification // message receipt notification to main sim thread
msgs [][]byte // recipient addresses of messages
}
var (
pof = pot.DefaultPof(256) // generate messages and index them
topic = BytesToTopic([]byte{0x00, 0x00, 0x06, 0x82})
)
func resetTestVariables() {
handlerDone = false
requiredMessages = 0
allowedMessages = 0
msgs = nil
sim = nil
resetMsgCount()
kademlias = make(map[enode.ID]*network.Kademlia)
nodeAddrs = make(map[enode.ID][]byte)
recipients = make(map[int][]enode.ID)
allowed = make(map[int][]enode.ID)
expectedMsgs = make(map[enode.ID][]uint64)
allowedMsgs = make(map[enode.ID][]uint64)
senders = make(map[int]enode.ID)
handlerC = make(chan handlerNotification)
doneC = make(chan struct{})
errC = make(chan error)
msgC = make(chan handlerNotification)
func (d *testData) getMsgCount() int {
d.mu.Lock()
defer d.mu.Unlock()
return d.messageCount
}
func getMsgCount() int {
mx.Lock()
defer mx.Unlock()
return messageCount
func (d *testData) incrementMsgCount() int {
d.mu.Lock()
defer d.mu.Unlock()
d.messageCount++
return d.messageCount
}
func resetMsgCount() {
mx.Lock()
messageCount = 0
mx.Unlock()
func (d *testData) isDone() bool {
d.mu.Lock()
defer d.mu.Unlock()
return d.handlerDone
}
func incrementMsgCount() int {
mx.Lock()
defer mx.Unlock()
messageCount++
return messageCount
}
func isDone() bool {
mu.Lock()
defer mu.Unlock()
return handlerDone
}
func setDone() {
mu.Lock()
defer mu.Unlock()
handlerDone = true
func (d *testData) setDone() {
d.mu.Lock()
defer d.mu.Unlock()
d.handlerDone = true
}
func getCmdParams(t *testing.T) (int, int) {
@ -149,23 +123,34 @@ func readSnapshot(t *testing.T, nodeCount int) simulations.Snapshot {
return snap
}
func assignTestVariables(sim *simulation.Simulation, msgCount int) {
func initializeTestData(d *testData, msgCount int) {
log.Debug("TestProxNetwork start")
for _, nodeId := range sim.NodeIDs() {
nodeAddrs[nodeId] = nodeIDToAddr(nodeId)
d.nodeAddrs = make(map[enode.ID][]byte)
d.recipients = make(map[int][]enode.ID)
d.allowed = make(map[int][]enode.ID)
d.expectedMsgs = make(map[enode.ID][]uint64)
d.allowedMsgs = make(map[enode.ID][]uint64)
d.senders = make(map[int]enode.ID)
d.handlerC = make(chan handlerNotification)
d.doneC = make(chan struct{})
d.errC = make(chan error)
d.msgC = make(chan handlerNotification)
for _, nodeId := range d.sim.NodeIDs() {
d.nodeAddrs[nodeId] = nodeIDToAddr(nodeId)
}
for i := 0; i < int(msgCount); i++ {
msgAddr := pot.RandomAddress() // we choose message addresses randomly
msgs = append(msgs, msgAddr.Bytes())
d.msgs = append(d.msgs, msgAddr.Bytes())
smallestPo := 256
var targets []enode.ID
var closestPO int
// loop through all nodes and add the message to recipient indices
for _, nod := range sim.Net.GetNodes() {
po, _ := pof(msgs[i], nodeAddrs[nod.ID()], 0)
depth := kademlias[nod.ID()].NeighbourhoodDepth()
for _, nod := range d.sim.Net.GetNodes() {
po, _ := pof(d.msgs[i], d.nodeAddrs[nod.ID()], 0)
depth := d.kademlias[nod.ID()].NeighbourhoodDepth()
// only nodes with closest IDs (wrt msg) will receive the msg
if po > closestPO {
@ -177,27 +162,27 @@ func assignTestVariables(sim *simulation.Simulation, msgCount int) {
}
if po >= depth {
allowedMessages++
allowed[i] = append(allowed[i], nod.ID())
allowedMsgs[nod.ID()] = append(allowedMsgs[nod.ID()], uint64(i))
d.allowedMessages++
d.allowed[i] = append(d.allowed[i], nod.ID())
d.allowedMsgs[nod.ID()] = append(d.allowedMsgs[nod.ID()], uint64(i))
}
// a node with the smallest PO (wrt msg) will be the sender
if po < smallestPo {
smallestPo = po
senders[i] = nod.ID()
d.senders[i] = nod.ID()
}
}
requiredMessages += len(targets)
d.requiredMessages += len(targets)
for _, id := range targets {
recipients[i] = append(recipients[i], id)
expectedMsgs[id] = append(expectedMsgs[id], uint64(i))
d.recipients[i] = append(d.recipients[i], id)
d.expectedMsgs[id] = append(d.expectedMsgs[id], uint64(i))
}
log.Debug("nn for msg", "targets", len(recipients[i]), "msgidx", i, "msg", common.Bytes2Hex(msgAddr[:8]), "sender", senders[i], "senderpo", smallestPo)
log.Debug("nn for msg", "targets", len(d.recipients[i]), "msgidx", i, "msg", common.Bytes2Hex(msgAddr[:8]), "sender", d.senders[i], "senderpo", smallestPo)
}
log.Debug("msgs to receive", "count", requiredMessages)
log.Debug("msgs to receive", "count", d.requiredMessages)
}
func TestProxNetwork(t *testing.T) {
@ -221,33 +206,37 @@ func TestProxNetworkLong(t *testing.T) {
// Upon sending the messages, it verifies that the respective message is passed to the message handlers of these recipients.
// It will fail if a recipient handles a message it should not, or if after propagation not all expected messages are handled (timeout)
func testProxNetwork(t *testing.T) {
resetTestVariables()
var tstdata testData
msgCount, nodeCount := getCmdParams(t)
handlerContextFuncs := make(map[Topic]handlerContextFunc)
handlerContextFuncs[topic] = nodeMsgHandler
services := newProxServices(true, handlerContextFuncs, kademlias)
sim = simulation.New(services)
defer sim.Close()
err := sim.UploadSnapshot(fmt.Sprintf("testdata/snapshot_%d.json", nodeCount))
tstdata.kademlias = make(map[enode.ID]*network.Kademlia)
services := newProxServices(&tstdata, true, handlerContextFuncs, tstdata.kademlias)
tstdata.sim = simulation.New(services)
defer tstdata.sim.Close()
err := tstdata.sim.UploadSnapshot(fmt.Sprintf("testdata/snapshot_%d.json", nodeCount))
if err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second*20) // todo: review
ctx, cancel := context.WithTimeout(context.Background(), time.Second*3) // todo: increase before commit
defer cancel()
snap := readSnapshot(t, nodeCount)
err = sim.WaitTillSnapshotRecreated(ctx, snap)
err = tstdata.sim.WaitTillSnapshotRecreated(ctx, snap)
if err != nil {
t.Fatalf("failed to recreate snapshot: %s", err)
}
assignTestVariables(sim, msgCount)
result := sim.Run(ctx, runFunc)
initializeTestData(&tstdata, msgCount)
wrapper := func(c context.Context, s *simulation.Simulation) error {
return runFunc(&tstdata, c, s)
}
result := tstdata.sim.Run(ctx, wrapper)
if result.Error != nil {
// context deadline exceeded
// however, it might just mean that not all possible messages are received
// now we must check if all required messages are received
cnt := getMsgCount()
cnt := tstdata.getMsgCount()
log.Debug("TestProxNetwork finnished", "rcv", cnt)
if cnt < requiredMessages {
if cnt < tstdata.requiredMessages {
t.Fatal(result.Error)
}
}
@ -268,22 +257,22 @@ func sendAllMsgs(sim *simulation.Simulation, msgs [][]byte, senders map[int]enod
log.Debug("all messages sent")
}
func runFunc(ctx context.Context, sim *simulation.Simulation) error {
go handlerChannelListener(ctx)
go sendAllMsgs(sim, msgs, senders)
func runFunc(tstdata *testData, ctx context.Context, sim *simulation.Simulation) error {
go handlerChannelListener(tstdata, ctx)
go sendAllMsgs(sim, tstdata.msgs, tstdata.senders)
received := 0
// collect incoming messages and terminate with corresponding status when message handler listener ends
for {
select {
case err := <-errC:
case err := <-tstdata.errC:
return err
case hn := <-msgC:
case hn := <-tstdata.msgC:
received++
log.Debug("msg received", "msgs_received", received, "total_expected", requiredMessages, "id", hn.id, "serial", hn.serial)
if received == allowedMessages {
doneC <- struct{}{}
close(doneC)
log.Debug("msg received", "msgs_received", received, "total_expected", tstdata.requiredMessages, "id", hn.id, "serial", hn.serial)
if received == tstdata.allowedMessages {
tstdata.doneC <- struct{}{}
close(tstdata.doneC)
return nil
}
}
@ -291,26 +280,26 @@ func runFunc(ctx context.Context, sim *simulation.Simulation) error {
return nil
}
func handlerChannelListener(ctx context.Context) {
func handlerChannelListener(tstdata *testData, ctx context.Context) {
for {
select {
case <-doneC: // graceful exit
setDone()
errC <- nil
case <-tstdata.doneC: // graceful exit
tstdata.setDone()
tstdata.errC <- nil
return
case <-ctx.Done(): // timeout or cancel
setDone()
errC <- ctx.Err()
tstdata.setDone()
tstdata.errC <- ctx.Err()
return
// incoming message from pss message handler
case handlerNotification := <-handlerC:
case handlerNotification := <-tstdata.handlerC:
// check if recipient has already received all its messages and notify to fail the test if so
aMsgs := allowedMsgs[handlerNotification.id]
aMsgs := tstdata.allowedMsgs[handlerNotification.id]
if len(aMsgs) == 0 {
setDone()
errC <- fmt.Errorf("too many messages received by recipient %x", handlerNotification.id)
tstdata.setDone()
tstdata.errC <- fmt.Errorf("too many messages received by recipient %x", handlerNotification.id)
return
}
@ -323,23 +312,23 @@ func handlerChannelListener(ctx context.Context) {
}
}
if idx == -1 {
setDone()
errC <- fmt.Errorf("message %d received by wrong recipient %v", handlerNotification.serial, handlerNotification.id)
tstdata.setDone()
tstdata.errC <- fmt.Errorf("message %d received by wrong recipient %v", handlerNotification.serial, handlerNotification.id)
return
}
// message is ok, so remove that message serial from the recipient expectation array and notify the main sim thread
aMsgs[idx] = aMsgs[len(aMsgs)-1]
aMsgs = aMsgs[:len(aMsgs)-1]
msgC <- handlerNotification
tstdata.msgC <- handlerNotification
}
}
}
func nodeMsgHandler(config *adapters.NodeConfig) *handler {
func nodeMsgHandler(tstdata *testData, config *adapters.NodeConfig) *handler {
return &handler{
f: func(msg []byte, p *p2p.Peer, asymmetric bool, keyid string) error {
cnt := incrementMsgCount()
cnt := tstdata.incrementMsgCount()
log.Debug("nodeMsgHandler rcv", "cnt", cnt)
// using simple serial in message body, makes it easy to keep track of who's getting what
@ -348,12 +337,12 @@ func nodeMsgHandler(config *adapters.NodeConfig) *handler {
log.Crit(fmt.Sprintf("corrupt message received by %x (uvarint parse returned %d)", config.ID, c))
}
if isDone() {
if tstdata.isDone() {
return errors.New("handlers aborted") // terminate if simulation is over
}
// pass message context to the listener in the simulation
handlerC <- handlerNotification{
tstdata.handlerC <- handlerNotification{
id: config.ID,
serial: serial,
}
@ -368,7 +357,7 @@ func nodeMsgHandler(config *adapters.NodeConfig) *handler {
// an adaptation of the same services setup as in pss_test.go
// replaces pss_test.go when those tests are rewritten to the new swarm/network/simulation package
func newProxServices(allowRaw bool, handlerContextFuncs map[Topic]handlerContextFunc, kademlias map[enode.ID]*network.Kademlia) map[string]simulation.ServiceFunc {
func newProxServices(tstdata *testData, allowRaw bool, handlerContextFuncs map[Topic]handlerContextFunc, kademlias map[enode.ID]*network.Kademlia) map[string]simulation.ServiceFunc {
stateStore := state.NewInmemoryStore()
kademlia := func(id enode.ID) *network.Kademlia {
if k, ok := kademlias[id]; ok {
@ -422,7 +411,7 @@ func newProxServices(allowRaw bool, handlerContextFuncs map[Topic]handlerContext
// register the handlers we've been passed
var deregisters []func()
for tpc, hndlrFunc := range handlerContextFuncs {
deregisters = append(deregisters, ps.Register(&tpc, hndlrFunc(ctx.Config)))
deregisters = append(deregisters, ps.Register(&tpc, hndlrFunc(tstdata, ctx.Config)))
}
// if handshake mode is set, add the controller