mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-08-17 17:33:47 +00:00
327 lines
9.9 KiB
Go
327 lines
9.9 KiB
Go
package discovery
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"os"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/node"
|
|
"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/p2p/simulations/adapters"
|
|
"github.com/ethereum/go-ethereum/swarm/network"
|
|
)
|
|
|
|
// serviceName is used with the exec adapter so the exec'd binary knows which
|
|
// service to execute
|
|
const serviceName = "discovery"
|
|
const testMinProxBinSize = 2
|
|
|
|
var services = adapters.Services{
|
|
serviceName: newService,
|
|
}
|
|
|
|
var (
|
|
nodeCount = flag.Int("nodes", 16, "number of nodes to create (default 10)")
|
|
initCount = flag.Int("conns", 1, "number of originally connected peers (default 1)")
|
|
snapshotFile = flag.String("snapshot", "", "create snapshot")
|
|
loglevel = flag.Int("loglevel", 3, "verbosity of logs")
|
|
)
|
|
|
|
func init() {
|
|
flag.Parse()
|
|
// register the discovery service which will run as a devp2p
|
|
// protocol when using the exec adapter
|
|
adapters.RegisterServices(services)
|
|
|
|
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(os.Stderr, log.TerminalFormat(false))))
|
|
}
|
|
|
|
// Benchmarks to test the average time it takes for an N-node ring
|
|
// to full a healthy kademlia topology
|
|
func BenchmarkDiscovery_8_1(b *testing.B) { benchmarkDiscovery(b, 8, 1) }
|
|
func BenchmarkDiscovery_16_1(b *testing.B) { benchmarkDiscovery(b, 16, 1) }
|
|
func BenchmarkDiscovery_32_1(b *testing.B) { benchmarkDiscovery(b, 32, 1) }
|
|
func BenchmarkDiscovery_64_1(b *testing.B) { benchmarkDiscovery(b, 64, 1) }
|
|
func BenchmarkDiscovery_128_1(b *testing.B) { benchmarkDiscovery(b, 128, 1) }
|
|
func BenchmarkDiscovery_256_1(b *testing.B) { benchmarkDiscovery(b, 256, 1) }
|
|
|
|
func BenchmarkDiscovery_8_2(b *testing.B) { benchmarkDiscovery(b, 8, 2) }
|
|
func BenchmarkDiscovery_16_2(b *testing.B) { benchmarkDiscovery(b, 16, 2) }
|
|
func BenchmarkDiscovery_32_2(b *testing.B) { benchmarkDiscovery(b, 32, 2) }
|
|
func BenchmarkDiscovery_64_2(b *testing.B) { benchmarkDiscovery(b, 64, 2) }
|
|
func BenchmarkDiscovery_128_2(b *testing.B) { benchmarkDiscovery(b, 128, 2) }
|
|
func BenchmarkDiscovery_256_2(b *testing.B) { benchmarkDiscovery(b, 256, 2) }
|
|
|
|
func BenchmarkDiscovery_8_4(b *testing.B) { benchmarkDiscovery(b, 8, 4) }
|
|
func BenchmarkDiscovery_16_4(b *testing.B) { benchmarkDiscovery(b, 16, 4) }
|
|
func BenchmarkDiscovery_32_4(b *testing.B) { benchmarkDiscovery(b, 32, 4) }
|
|
func BenchmarkDiscovery_64_4(b *testing.B) { benchmarkDiscovery(b, 64, 4) }
|
|
func BenchmarkDiscovery_128_4(b *testing.B) { benchmarkDiscovery(b, 128, 4) }
|
|
func BenchmarkDiscovery_256_4(b *testing.B) { benchmarkDiscovery(b, 256, 4) }
|
|
|
|
func TestDiscoverySimulationDockerAdapter(t *testing.T) {
|
|
testDiscoverySimulationDockerAdapter(t, *nodeCount, *initCount)
|
|
}
|
|
|
|
func testDiscoverySimulationDockerAdapter(t *testing.T, nodes, conns int) {
|
|
adapter, err := adapters.NewDockerAdapter()
|
|
if err != nil {
|
|
if err == adapters.ErrLinuxOnly {
|
|
t.Skip(err)
|
|
} else {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
testDiscoverySimulation(t, nodes, conns, adapter)
|
|
}
|
|
|
|
func TestDiscoverySimulationExecAdapter(t *testing.T) {
|
|
testDiscoverySimulationExecAdapter(t, *nodeCount, *initCount)
|
|
}
|
|
|
|
func testDiscoverySimulationExecAdapter(t *testing.T, nodes, conns int) {
|
|
baseDir, err := ioutil.TempDir("", "swarm-test")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(baseDir)
|
|
testDiscoverySimulation(t, nodes, conns, adapters.NewExecAdapter(baseDir))
|
|
}
|
|
|
|
func TestDiscoverySimulationSimAdapter(t *testing.T) {
|
|
testDiscoverySimulationSimAdapter(t, *nodeCount, *initCount)
|
|
}
|
|
|
|
func testDiscoverySimulationSimAdapter(t *testing.T, nodes, conns int) {
|
|
testDiscoverySimulation(t, nodes, conns, adapters.NewSocketAdapter(services))
|
|
// testDiscoverySimulation(t, nodes, conns, adapters.NewSimAdapter(services))
|
|
}
|
|
|
|
func testDiscoverySimulation(t *testing.T, nodes, conns int, adapter adapters.NodeAdapter) {
|
|
startedAt := time.Now()
|
|
result, err := discoverySimulation(nodes, conns, adapter)
|
|
if err != nil {
|
|
t.Fatalf("Setting up simulation failed: %v", err)
|
|
}
|
|
if result.Error != nil {
|
|
t.Fatalf("Simulation failed: %s", result.Error)
|
|
}
|
|
t.Logf("Simulation with %d nodes passed in %s", nodes, result.FinishedAt.Sub(result.StartedAt))
|
|
var min, max time.Duration
|
|
var sum int
|
|
for _, pass := range result.Passes {
|
|
duration := pass.Sub(result.StartedAt)
|
|
if sum == 0 || duration < min {
|
|
min = duration
|
|
}
|
|
if duration > max {
|
|
max = duration
|
|
}
|
|
sum += int(duration.Nanoseconds())
|
|
}
|
|
t.Logf("Min: %s, Max: %s, Average: %s", min, max, time.Duration(sum/len(result.Passes))*time.Nanosecond)
|
|
finishedAt := time.Now()
|
|
t.Logf("Setup: %s, shutdown: %s", result.StartedAt.Sub(startedAt), finishedAt.Sub(result.FinishedAt))
|
|
}
|
|
|
|
func benchmarkDiscovery(b *testing.B, nodes, conns int) {
|
|
for i := 0; i < b.N; i++ {
|
|
result, err := discoverySimulation(nodes, conns, adapters.NewSimAdapter(services))
|
|
if err != nil {
|
|
b.Fatalf("setting up simulation failed: %s", err)
|
|
}
|
|
if result.Error != nil {
|
|
b.Logf("simulation failed: %s", result.Error)
|
|
}
|
|
}
|
|
}
|
|
|
|
func discoverySimulation(nodes, conns int, adapter adapters.NodeAdapter) (*simulations.StepResult, error) {
|
|
// create network
|
|
net := simulations.NewNetwork(adapter, &simulations.NetworkConfig{
|
|
ID: "0",
|
|
DefaultService: serviceName,
|
|
})
|
|
defer net.Shutdown()
|
|
trigger := make(chan discover.NodeID)
|
|
ids := make([]discover.NodeID, nodes)
|
|
for i := 0; i < nodes; i++ {
|
|
node, err := net.NewNode()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error starting node: %s", err)
|
|
}
|
|
if err := net.Start(node.ID()); err != nil {
|
|
return nil, fmt.Errorf("error starting node %s: %s", node.ID().TerminalString(), err)
|
|
}
|
|
if err := triggerChecks(trigger, net, node.ID()); err != nil {
|
|
return nil, fmt.Errorf("error triggering checks for node %s: %s", node.ID().TerminalString(), err)
|
|
}
|
|
ids[i] = node.ID()
|
|
}
|
|
|
|
// run a simulation which connects the 10 nodes in a ring and waits
|
|
// for full peer discovery
|
|
var addrs [][]byte
|
|
action := func(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
wg := sync.WaitGroup{}
|
|
for i := range ids {
|
|
// collect the overlay addresses, to
|
|
addrs = append(addrs, network.ToOverlayAddr(ids[i].Bytes()))
|
|
for j := 0; j < conns; j++ {
|
|
var k int
|
|
if j == 0 {
|
|
k = (i + 1) % len(ids)
|
|
} else {
|
|
k = rand.Intn(len(ids))
|
|
}
|
|
wg.Add(1)
|
|
go func(i, k int) {
|
|
defer wg.Done()
|
|
net.Connect(ids[i], ids[k])
|
|
}(i, k)
|
|
}
|
|
}
|
|
wg.Wait()
|
|
log.Debug(fmt.Sprintf("nodes: %v", len(addrs)))
|
|
// construct the peer pot, so that kademlia health can be checked
|
|
ppmap := network.NewPeerPot(testMinProxBinSize, ids, addrs)
|
|
check := func(ctx context.Context, id discover.NodeID) (bool, error) {
|
|
select {
|
|
case <-ctx.Done():
|
|
return false, ctx.Err()
|
|
default:
|
|
}
|
|
|
|
node := net.GetNode(id)
|
|
if node == nil {
|
|
return false, fmt.Errorf("unknown node: %s", id)
|
|
}
|
|
client, err := node.Client()
|
|
if err != nil {
|
|
return false, fmt.Errorf("error getting node client: %s", err)
|
|
}
|
|
healthy := &network.Health{}
|
|
if err := client.Call(&healthy, "hive_healthy", ppmap[id]); err != nil {
|
|
return false, fmt.Errorf("error getting node health: %s", err)
|
|
}
|
|
log.Debug(fmt.Sprintf("node %4s healthy: got nearest neighbours: %v, know nearest neighbours: %v, saturated: %v\n%v", id, healthy.GotNN, healthy.KnowNN, healthy.Full, healthy.Hive))
|
|
return healthy.KnowNN && healthy.GotNN && healthy.Full, nil
|
|
}
|
|
|
|
// 64 nodes ~ 1min
|
|
// 128 nodes ~
|
|
timeout := 300 * time.Second
|
|
ctx, cancel := context.WithTimeout(context.Background(), timeout)
|
|
defer cancel()
|
|
result := simulations.NewSimulation(net).Run(ctx, &simulations.Step{
|
|
Action: action,
|
|
Trigger: trigger,
|
|
Expect: &simulations.Expectation{
|
|
Nodes: ids,
|
|
Check: check,
|
|
},
|
|
})
|
|
if result.Error != nil {
|
|
return result, nil
|
|
}
|
|
|
|
if *snapshotFile != "" {
|
|
snap, err := net.Snapshot()
|
|
if err != nil {
|
|
return nil, errors.New("no shapshot dude")
|
|
}
|
|
jsonsnapshot, err := json.Marshal(snap)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("corrupt json snapshot: %v", err)
|
|
}
|
|
log.Info("writing snapshot", "file", *snapshotFile)
|
|
err = ioutil.WriteFile(*snapshotFile, jsonsnapshot, 0755)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
// triggerChecks triggers a simulation step check whenever a peer is added or
|
|
// removed from the given node, and also every second to avoid a race between
|
|
// peer events and kademlia becoming healthy
|
|
func triggerChecks(trigger chan discover.NodeID, net *simulations.Network, id discover.NodeID) error {
|
|
node := net.GetNode(id)
|
|
if node == nil {
|
|
return fmt.Errorf("unknown node: %s", id)
|
|
}
|
|
client, err := node.Client()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
events := make(chan *p2p.PeerEvent)
|
|
sub, err := client.Subscribe(context.Background(), "admin", events, "peerEvents")
|
|
if err != nil {
|
|
return fmt.Errorf("error getting peer events for node %v: %s", id, err)
|
|
}
|
|
go func() {
|
|
defer sub.Unsubscribe()
|
|
|
|
tick := time.NewTicker(time.Second)
|
|
defer tick.Stop()
|
|
|
|
for {
|
|
select {
|
|
case <-events:
|
|
trigger <- id
|
|
case <-tick.C:
|
|
trigger <- id
|
|
case err := <-sub.Err():
|
|
if err != nil {
|
|
log.Error(fmt.Sprintf("error getting peer events for node %v", id), "err", err)
|
|
}
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
return nil
|
|
}
|
|
|
|
func newService(ctx *adapters.ServiceContext) (node.Service, error) {
|
|
addr := network.NewAddrFromNodeIDAndPort(ctx.Config.ID, ctx.Config.Port)
|
|
|
|
kp := network.NewKadParams()
|
|
kp.MinProxBinSize = testMinProxBinSize
|
|
kp.MaxBinSize = 3
|
|
kp.MinBinSize = 1
|
|
kp.MaxRetries = 1000
|
|
kp.RetryExponent = 2
|
|
kp.RetryInterval = 50000000
|
|
|
|
if ctx.Config.Reachable != nil {
|
|
kp.Reachable = func(o network.OverlayAddr) bool {
|
|
return ctx.Config.Reachable(o.(*network.BzzAddr).ID())
|
|
}
|
|
}
|
|
kad := network.NewKademlia(addr.Over(), kp)
|
|
|
|
hp := network.NewHiveParams()
|
|
hp.KeepAliveInterval = 200 * time.Millisecond
|
|
|
|
config := &network.BzzConfig{
|
|
OverlayAddr: addr.Over(),
|
|
UnderlayAddr: addr.Under(),
|
|
HiveParams: hp,
|
|
}
|
|
|
|
return network.NewBzz(config, kad, nil), nil
|
|
}
|