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tests: Implement network delay and blackholing in linearizability tests

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Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>
This commit is contained in:
Marek Siarkowicz 2022-12-26 19:02:53 +01:00
parent de8b914eb0
commit 064fad5ae4
8 changed files with 136 additions and 32 deletions
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2
tests/e2e/ctl_v3_snapshot_test.go
View File

@ -212,7 +212,7 @@ func testIssue6361(t *testing.T) {
newDataDir := filepath.Join(t.TempDir(), "test.data")
t.Log("etcdctl restoring the snapshot...")
err = e2e.SpawnWithExpect([]string{e2e.BinPath.Etcdutl, "snapshot", "restore", fpath, "--name", epc.Procs[0].Config().Name, "--initial-cluster", epc.Procs[0].Config().InitialCluster, "--initial-cluster-token", epc.Procs[0].Config().InitialToken, "--initial-advertise-peer-urls", epc.Procs[0].Config().Purl.String(), "--data-dir", newDataDir}, "added member")
err = e2e.SpawnWithExpect([]string{e2e.BinPath.Etcdutl, "snapshot", "restore", fpath, "--name", epc.Procs[0].Config().Name, "--initial-cluster", epc.Procs[0].Config().InitialCluster, "--initial-cluster-token", epc.Procs[0].Config().InitialToken, "--initial-advertise-peer-urls", epc.Procs[0].Config().PeerURL.String(), "--data-dir", newDataDir}, "added member")
if err != nil {
t.Fatal(err)
}

6
tests/e2e/etcd_grpcproxy_test.go
View File

@ -42,7 +42,7 @@ func TestGrpcProxyAutoSync(t *testing.T) {
}()
var (
node1ClientURL = epc.Procs[0].Config().Acurl
node1ClientURL = epc.Procs[0].Config().ClientURL
proxyClientURL = "127.0.0.1:32379"
)
@ -67,11 +67,11 @@ func TestGrpcProxyAutoSync(t *testing.T) {
require.NoError(t, err)
// Wait for auto sync of endpoints
err = waitForEndpointInLog(ctx, proxyProc, epc.Procs[1].Config().Acurl)
err = waitForEndpointInLog(ctx, proxyProc, epc.Procs[1].Config().ClientURL)
require.NoError(t, err)
err = epc.CloseProc(ctx, func(proc e2e.EtcdProcess) bool {
return proc.Config().Acurl == node1ClientURL
return proc.Config().ClientURL == node1ClientURL
})
require.NoError(t, err)

49
tests/framework/e2e/cluster.go
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@ -30,6 +30,7 @@ import (
"go.uber.org/zap/zaptest"
"go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/pkg/v3/proxy"
"go.etcd.io/etcd/server/v3/etcdserver"
"go.etcd.io/etcd/tests/v3/framework/config"
)
@ -182,6 +183,7 @@ type EtcdProcessClusterConfig struct {
WarningUnaryRequestDuration time.Duration
ExperimentalWarningUnaryRequestDuration time.Duration
PeerProxy bool
}
func DefaultConfig() *EtcdProcessClusterConfig {
@ -329,6 +331,10 @@ func WithCompactionBatchLimit(limit int) EPClusterOption {
return func(c *EtcdProcessClusterConfig) { c.CompactionBatchLimit = limit }
}
func WithPeerProxy(enabled bool) EPClusterOption {
return func(c *EtcdProcessClusterConfig) { c.PeerProxy = enabled }
}
// NewEtcdProcessCluster launches a new cluster from etcd processes, returning
// a new EtcdProcessCluster once all nodes are ready to accept client requests.
func NewEtcdProcessCluster(ctx context.Context, t testing.TB, opts ...EPClusterOption) (*EtcdProcessCluster, error) {
@ -416,7 +422,7 @@ func (cfg *EtcdProcessClusterConfig) EtcdAllServerProcessConfigs(tb testing.TB)
for i := 0; i < cfg.ClusterSize; i++ {
etcdCfgs[i] = cfg.EtcdServerProcessConfig(tb, i)
initialCluster[i] = fmt.Sprintf("%s=%s", etcdCfgs[i].Name, etcdCfgs[i].Purl.String())
initialCluster[i] = fmt.Sprintf("%s=%s", etcdCfgs[i].Name, etcdCfgs[i].PeerURL.String())
}
for i := range etcdCfgs {
@ -443,8 +449,12 @@ func (cfg *EtcdProcessClusterConfig) EtcdServerProcessConfig(tb testing.TB, i in
var curls []string
var curl, curltls string
port := cfg.BasePort + 5*i
curlHost := fmt.Sprintf("localhost:%d", port)
clientPort := port
peerPort := port + 1
metricsPort := port + 2
peer2Port := port + 3
curlHost := fmt.Sprintf("localhost:%d", clientPort)
switch cfg.Client.ConnectionType {
case ClientNonTLS, ClientTLS:
curl = (&url.URL{Scheme: cfg.ClientScheme(), Host: curlHost}).String()
@ -455,7 +465,17 @@ func (cfg *EtcdProcessClusterConfig) EtcdServerProcessConfig(tb testing.TB, i in
curls = []string{curl, curltls}
}
purl := url.URL{Scheme: cfg.PeerScheme(), Host: fmt.Sprintf("localhost:%d", port+1)}
peerListenUrl := url.URL{Scheme: cfg.PeerScheme(), Host: fmt.Sprintf("localhost:%d", peerPort)}
peerAdvertiseUrl := url.URL{Scheme: cfg.PeerScheme(), Host: fmt.Sprintf("localhost:%d", peerPort)}
var proxyCfg *proxy.ServerConfig
if cfg.PeerProxy {
peerAdvertiseUrl.Host = fmt.Sprintf("localhost:%d", peer2Port)
proxyCfg = &proxy.ServerConfig{
Logger: zap.NewNop(),
To: peerListenUrl,
From: peerAdvertiseUrl,
}
}
name := fmt.Sprintf("%s-test-%d", testNameCleanRegex.ReplaceAllString(tb.Name(), ""), i)
@ -475,8 +495,8 @@ func (cfg *EtcdProcessClusterConfig) EtcdServerProcessConfig(tb testing.TB, i in
"--name", name,
"--listen-client-urls", strings.Join(curls, ","),
"--advertise-client-urls", strings.Join(curls, ","),
"--listen-peer-urls", purl.String(),
"--initial-advertise-peer-urls", purl.String(),
"--listen-peer-urls", peerListenUrl.String(),
"--initial-advertise-peer-urls", peerAdvertiseUrl.String(),
"--initial-cluster-token", cfg.InitialToken,
"--data-dir", dataDirPath,
"--snapshot-count", fmt.Sprintf("%d", cfg.SnapshotCount),
@ -503,7 +523,7 @@ func (cfg *EtcdProcessClusterConfig) EtcdServerProcessConfig(tb testing.TB, i in
if cfg.MetricsURLScheme != "" {
murl = (&url.URL{
Scheme: cfg.MetricsURLScheme,
Host: fmt.Sprintf("localhost:%d", port+2),
Host: fmt.Sprintf("localhost:%d", metricsPort),
}).String()
args = append(args, "--listen-metrics-urls", murl)
}
@ -590,11 +610,12 @@ func (cfg *EtcdProcessClusterConfig) EtcdServerProcessConfig(tb testing.TB, i in
DataDirPath: dataDirPath,
KeepDataDir: cfg.KeepDataDir,
Name: name,
Purl: purl,
Acurl: curl,
Murl: murl,
PeerURL: peerAdvertiseUrl,
ClientURL: curl,
MetricsURL: murl,
InitialToken: cfg.InitialToken,
GoFailPort: gofailPort,
Proxy: proxyCfg,
}
}
@ -687,7 +708,7 @@ func (epc *EtcdProcessCluster) CloseProc(ctx context.Context, finder func(EtcdPr
return fmt.Errorf("failed to get member list: %w", err)
}
memberID, err := findMemberIDByEndpoint(memberList.Members, proc.Config().Acurl)
memberID, err := findMemberIDByEndpoint(memberList.Members, proc.Config().ClientURL)
if err != nil {
return fmt.Errorf("failed to find member ID: %w", err)
}
@ -707,7 +728,7 @@ func (epc *EtcdProcessCluster) CloseProc(ctx context.Context, finder func(EtcdPr
return errors.New("failed to remove member after 10 tries")
}
epc.lg.Info("successfully removed member", zap.String("acurl", proc.Config().Acurl))
epc.lg.Info("successfully removed member", zap.String("acurl", proc.Config().ClientURL))
// Then stop process
return proc.Close()
@ -724,17 +745,17 @@ func (epc *EtcdProcessCluster) StartNewProc(ctx context.Context, cfg *EtcdProces
epc.nextSeq++
initialCluster := []string{
fmt.Sprintf("%s=%s", serverCfg.Name, serverCfg.Purl.String()),
fmt.Sprintf("%s=%s", serverCfg.Name, serverCfg.PeerURL.String()),
}
for _, p := range epc.Procs {
initialCluster = append(initialCluster, fmt.Sprintf("%s=%s", p.Config().Name, p.Config().Purl.String()))
initialCluster = append(initialCluster, fmt.Sprintf("%s=%s", p.Config().Name, p.Config().PeerURL.String()))
}
epc.Cfg.SetInitialOrDiscovery(serverCfg, initialCluster, "existing")
// First add new member to cluster
memberCtl := epc.Client(opts...)
_, err := memberCtl.MemberAdd(ctx, serverCfg.Name, []string{serverCfg.Purl.String()})
_, err := memberCtl.MemberAdd(ctx, serverCfg.Name, []string{serverCfg.PeerURL.String()})
if err != nil {
return fmt.Errorf("failed to add new member: %w", err)
}

13
tests/framework/e2e/cluster_proxy.go
View File

@ -29,6 +29,7 @@ import (
"go.uber.org/zap"
"go.etcd.io/etcd/pkg/v3/expect"
"go.etcd.io/etcd/pkg/v3/proxy"
"go.etcd.io/etcd/tests/v3/framework/config"
)
@ -124,6 +125,10 @@ func (p *proxyEtcdProcess) Wait(ctx context.Context) error {
return p.etcdProc.Wait(ctx)
}
func (p *proxyEtcdProcess) PeerProxy() proxy.Server {
return nil
}
type proxyProc struct {
lg *zap.Logger
name string
@ -188,7 +193,7 @@ type proxyV2Proc struct {
}
func proxyListenURL(cfg *EtcdServerProcessConfig, portOffset int) string {
u, err := url.Parse(cfg.Acurl)
u, err := url.Parse(cfg.ClientURL)
if err != nil {
panic(err)
}
@ -206,7 +211,7 @@ func newProxyV2Proc(cfg *EtcdServerProcessConfig) *proxyV2Proc {
"--name", name,
"--proxy", "on",
"--listen-client-urls", listenAddr,
"--initial-cluster", cfg.Name + "=" + cfg.Purl.String(),
"--initial-cluster", cfg.Name + "=" + cfg.PeerURL.String(),
"--data-dir", dataDir,
}
return &proxyV2Proc{
@ -232,13 +237,13 @@ func newProxyV3Proc(cfg *EtcdServerProcessConfig) *proxyV3Proc {
"grpc-proxy",
"start",
"--listen-addr", strings.Split(listenAddr, "/")[2],
"--endpoints", cfg.Acurl,
"--endpoints", cfg.ClientURL,
// pass-through member RPCs
"--advertise-client-url", "",
"--data-dir", cfg.DataDirPath,
}
murl := ""
if cfg.Murl != "" {
if cfg.MetricsURL != "" {
murl = proxyListenURL(cfg, 4)
args = append(args, "--metrics-addr", murl)
}

4
tests/framework/e2e/curl.go
View File

@ -54,7 +54,7 @@ func (r CURLReq) timeoutDuration() time.Duration {
func CURLPrefixArgs(cfg *EtcdProcessClusterConfig, member EtcdProcess, method string, req CURLReq) []string {
var (
cmdArgs = []string{"curl"}
acurl = member.Config().Acurl
acurl = member.Config().ClientURL
)
if req.MetricsURLScheme != "https" {
if req.IsTLS {
@ -62,7 +62,7 @@ func CURLPrefixArgs(cfg *EtcdProcessClusterConfig, member EtcdProcess, method st
panic("should not use cURLPrefixArgsUseTLS when serving only TLS or non-TLS")
}
cmdArgs = append(cmdArgs, "--cacert", CaPath, "--cert", CertPath, "--key", PrivateKeyPath)
acurl = ToTLS(member.Config().Acurl)
acurl = ToTLS(member.Config().ClientURL)
} else if cfg.Client.ConnectionType == ClientTLS {
if cfg.CN {
cmdArgs = append(cmdArgs, "--cacert", CaPath, "--cert", CertPath, "--key", PrivateKeyPath)

42
tests/framework/e2e/etcd_process.go
View File

@ -28,6 +28,7 @@ import (
"go.etcd.io/etcd/client/pkg/v3/fileutil"
"go.etcd.io/etcd/pkg/v3/expect"
"go.etcd.io/etcd/pkg/v3/proxy"
"go.etcd.io/etcd/tests/v3/framework/config"
)
@ -49,6 +50,7 @@ type EtcdProcess interface {
Stop() error
Close() error
Config() *EtcdServerProcessConfig
PeerProxy() proxy.Server
Logs() LogsExpect
Kill() error
}
@ -62,6 +64,7 @@ type LogsExpect interface {
type EtcdServerProcess struct {
cfg *EtcdServerProcessConfig
proc *expect.ExpectProcess
proxy proxy.Server
donec chan struct{} // closed when Interact() terminates
}
@ -78,14 +81,15 @@ type EtcdServerProcessConfig struct {
Name string
Purl url.URL
Acurl string
Murl string
PeerURL url.URL
ClientURL string
MetricsURL string
InitialToken string
InitialCluster string
GoFailPort int
Proxy *proxy.ServerConfig
}
func NewEtcdServerProcess(cfg *EtcdServerProcessConfig) (*EtcdServerProcess, error) {
@ -100,9 +104,9 @@ func NewEtcdServerProcess(cfg *EtcdServerProcessConfig) (*EtcdServerProcess, err
return &EtcdServerProcess{cfg: cfg, donec: make(chan struct{})}, nil
}
func (ep *EtcdServerProcess) EndpointsV2() []string { return []string{ep.cfg.Acurl} }
func (ep *EtcdServerProcess) EndpointsV2() []string { return []string{ep.cfg.ClientURL} }
func (ep *EtcdServerProcess) EndpointsV3() []string { return ep.EndpointsV2() }
func (ep *EtcdServerProcess) EndpointsMetrics() []string { return []string{ep.cfg.Murl} }
func (ep *EtcdServerProcess) EndpointsMetrics() []string { return []string{ep.cfg.MetricsURL} }
func (epc *EtcdServerProcess) Client(opts ...config.ClientOption) *EtcdctlV3 {
etcdctl, err := NewEtcdctl(epc.Config().Client, epc.EndpointsV3(), opts...)
@ -117,6 +121,15 @@ func (ep *EtcdServerProcess) Start(ctx context.Context) error {
if ep.proc != nil {
panic("already started")
}
if ep.cfg.Proxy != nil && ep.proxy == nil {
ep.cfg.lg.Info("starting proxy...", zap.String("name", ep.cfg.Name), zap.String("from", ep.cfg.Proxy.From.String()), zap.String("to", ep.cfg.Proxy.To.String()))
ep.proxy = proxy.NewServer(*ep.cfg.Proxy)
select {
case <-ep.proxy.Ready():
case err := <-ep.proxy.Error():
return err
}
}
ep.cfg.lg.Info("starting server...", zap.String("name", ep.cfg.Name))
proc, err := SpawnCmdWithLogger(ep.cfg.lg, append([]string{ep.cfg.ExecPath}, ep.cfg.Args...), ep.cfg.EnvVars, ep.cfg.Name)
if err != nil {
@ -161,8 +174,8 @@ func (ep *EtcdServerProcess) Stop() (err error) {
}
<-ep.donec
ep.donec = make(chan struct{})
if ep.cfg.Purl.Scheme == "unix" || ep.cfg.Purl.Scheme == "unixs" {
err = os.Remove(ep.cfg.Purl.Host + ep.cfg.Purl.Path)
if ep.cfg.PeerURL.Scheme == "unix" || ep.cfg.PeerURL.Scheme == "unixs" {
err = os.Remove(ep.cfg.PeerURL.Host + ep.cfg.PeerURL.Path)
if err != nil && !os.IsNotExist(err) {
return err
}
@ -176,6 +189,15 @@ func (ep *EtcdServerProcess) Close() error {
if err := ep.Stop(); err != nil {
return err
}
if ep.proxy != nil {
ep.cfg.lg.Info("closing proxy...", zap.String("name", ep.cfg.Name))
err := ep.proxy.Close()
if err != nil {
return err
}
ep.proxy = nil
}
if !ep.cfg.KeepDataDir {
ep.cfg.lg.Info("removing directory", zap.String("data-dir", ep.cfg.DataDirPath))
return os.RemoveAll(ep.cfg.DataDirPath)
@ -243,3 +265,7 @@ func AssertProcessLogs(t *testing.T, ep EtcdProcess, expectLog string) {
t.Fatal(err)
}
}
func (ep *EtcdServerProcess) PeerProxy() proxy.Server {
return ep.proxy
}

50
tests/linearizability/failpoints.go
View File

@ -56,6 +56,8 @@ var (
CompactBeforeCommitBatchPanic Failpoint = goPanicFailpoint{"compactBeforeCommitBatch", triggerCompact, AnyMember}
CompactAfterCommitBatchPanic Failpoint = goPanicFailpoint{"compactAfterCommitBatch", triggerCompact, AnyMember}
RaftBeforeLeaderSendPanic Failpoint = goPanicFailpoint{"raftBeforeLeaderSend", nil, Leader}
BlackholePeerNetwork Failpoint = blackholePeerNetworkFailpoint{duration: time.Second}
DelayPeerNetwork Failpoint = delayPeerNetworkFailpoint{duration: time.Second, baseLatency: 75 * time.Millisecond, randomizedLatency: 50 * time.Millisecond}
RandomFailpoint Failpoint = randomFailpoint{[]Failpoint{
KillFailpoint, BeforeCommitPanic, AfterCommitPanic, RaftBeforeSavePanic,
RaftAfterSavePanic, DefragBeforeCopyPanic, DefragBeforeRenamePanic,
@ -66,6 +68,8 @@ var (
CompactBeforeSetFinishedCompactPanic, CompactAfterSetFinishedCompactPanic,
CompactBeforeCommitBatchPanic, CompactAfterCommitBatchPanic,
RaftBeforeLeaderSendPanic,
BlackholePeerNetwork,
DelayPeerNetwork,
}}
// TODO: Figure out how to reliably trigger below failpoints and add them to RandomFailpoint
raftBeforeApplySnapPanic Failpoint = goPanicFailpoint{"raftBeforeApplySnap", nil, AnyMember}
@ -247,3 +251,49 @@ func (f randomFailpoint) Trigger(t *testing.T, ctx context.Context, clus *e2e.Et
func (f randomFailpoint) Name() string {
return "Random"
}
type blackholePeerNetworkFailpoint struct {
duration time.Duration
}
func (f blackholePeerNetworkFailpoint) Trigger(t *testing.T, ctx context.Context, clus *e2e.EtcdProcessCluster) error {
member := clus.Procs[rand.Int()%len(clus.Procs)]
proxy := member.PeerProxy()
proxy.BlackholeTx()
proxy.BlackholeRx()
t.Logf("Blackholing traffic from and to %s", member.Config().Name)
time.Sleep(f.duration)
t.Logf("Traffic restored for %s", member.Config().Name)
proxy.UnblackholeTx()
proxy.UnblackholeRx()
return nil
}
func (f blackholePeerNetworkFailpoint) Name() string {
return "blackhole"
}
type delayPeerNetworkFailpoint struct {
duration time.Duration
baseLatency time.Duration
randomizedLatency time.Duration
}
func (f delayPeerNetworkFailpoint) Trigger(t *testing.T, ctx context.Context, clus *e2e.EtcdProcessCluster) error {
member := clus.Procs[rand.Int()%len(clus.Procs)]
proxy := member.PeerProxy()
proxy.DelayRx(f.baseLatency, f.randomizedLatency)
proxy.DelayTx(f.baseLatency, f.randomizedLatency)
t.Logf("Delaying traffic from and to %s by %v +/- %v", member.Config().Name, f.baseLatency, f.randomizedLatency)
time.Sleep(f.duration)
t.Logf("Traffic delay removed for %s", member.Config().Name)
proxy.UndelayRx()
proxy.UndelayTx()
return nil
}
func (f delayPeerNetworkFailpoint) Name() string {
return "delay"
}

2
tests/linearizability/linearizability_test.go
View File

@ -50,6 +50,7 @@ func TestLinearizability(t *testing.T) {
failpoint: RandomFailpoint,
config: *e2e.NewConfig(
e2e.WithClusterSize(1),
e2e.WithPeerProxy(true),
e2e.WithGoFailEnabled(true),
e2e.WithCompactionBatchLimit(100), // required for compactBeforeCommitBatch and compactAfterCommitBatch failpoints
),
@ -58,6 +59,7 @@ func TestLinearizability(t *testing.T) {
name: "ClusterOfSize3",
failpoint: RandomFailpoint,
config: *e2e.NewConfig(
e2e.WithPeerProxy(true),
e2e.WithGoFailEnabled(true),
e2e.WithCompactionBatchLimit(100), // required for compactBeforeCommitBatch and compactAfterCommitBatch failpoints
),