open-vault/physical/raft/raft_test.go

704 lines
16 KiB
Go

package raft
import (
"bytes"
"context"
"crypto/md5"
"encoding/base64"
"fmt"
"io"
"io/ioutil"
"math/rand"
"os"
"path/filepath"
"strings"
"testing"
"time"
"github.com/go-test/deep"
"github.com/golang/protobuf/proto"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-secure-stdlib/base62"
"github.com/hashicorp/go-uuid"
"github.com/hashicorp/raft"
"github.com/hashicorp/vault/sdk/helper/jsonutil"
"github.com/hashicorp/vault/sdk/physical"
bolt "go.etcd.io/bbolt"
)
func getRaft(t testing.TB, bootstrap bool, noStoreState bool) (*RaftBackend, string) {
raftDir, err := ioutil.TempDir("", "vault-raft-")
if err != nil {
t.Fatal(err)
}
t.Logf("raft dir: %s", raftDir)
return getRaftWithDir(t, bootstrap, noStoreState, raftDir)
}
func getRaftWithDir(t testing.TB, bootstrap bool, noStoreState bool, raftDir string) (*RaftBackend, string) {
id, err := uuid.GenerateUUID()
if err != nil {
t.Fatal(err)
}
logger := hclog.New(&hclog.LoggerOptions{
Name: fmt.Sprintf("raft-%s", id),
Level: hclog.Trace,
})
logger.Info("raft dir", "dir", raftDir)
conf := map[string]string{
"path": raftDir,
"trailing_logs": "100",
"node_id": id,
}
if noStoreState {
conf["doNotStoreLatestState"] = ""
}
backendRaw, err := NewRaftBackend(conf, logger)
if err != nil {
t.Fatal(err)
}
backend := backendRaw.(*RaftBackend)
if bootstrap {
err = backend.Bootstrap([]Peer{
{
ID: backend.NodeID(),
Address: backend.NodeID(),
},
})
if err != nil {
t.Fatal(err)
}
err = backend.SetupCluster(context.Background(), SetupOpts{})
if err != nil {
t.Fatal(err)
}
for {
if backend.raft.AppliedIndex() >= 2 {
break
}
}
}
backend.DisableAutopilot()
return backend, raftDir
}
func connectPeers(nodes ...*RaftBackend) {
for _, node := range nodes {
for _, peer := range nodes {
if node == peer {
continue
}
node.raftTransport.(*raft.InmemTransport).Connect(raft.ServerAddress(peer.NodeID()), peer.raftTransport)
peer.raftTransport.(*raft.InmemTransport).Connect(raft.ServerAddress(node.NodeID()), node.raftTransport)
}
}
}
func stepDownLeader(t *testing.T, node *RaftBackend) {
t.Helper()
if err := node.raft.LeadershipTransfer().Error(); err != nil {
t.Fatal(err)
}
timeout := time.Now().Add(time.Second * 10)
for !time.Now().After(timeout) {
if err := node.raft.VerifyLeader().Error(); err != nil {
return
}
time.Sleep(100 * time.Millisecond)
}
t.Fatal("still leader")
}
func waitForLeader(t *testing.T, nodes ...*RaftBackend) *RaftBackend {
t.Helper()
timeout := time.Now().Add(time.Second * 10)
for !time.Now().After(timeout) {
for _, node := range nodes {
if node.raft.Leader() == raft.ServerAddress(node.NodeID()) {
return node
}
}
time.Sleep(100 * time.Millisecond)
}
t.Fatal("no leader")
return nil
}
func compareFSMs(t *testing.T, fsm1, fsm2 *FSM) {
t.Helper()
if err := compareFSMsWithErr(t, fsm1, fsm2); err != nil {
t.Fatal(err)
}
}
func compareFSMsWithErr(t *testing.T, fsm1, fsm2 *FSM) error {
t.Helper()
index1, config1 := fsm1.LatestState()
index2, config2 := fsm2.LatestState()
if !proto.Equal(index1, index2) {
return fmt.Errorf("indexes did not match: %+v != %+v", index1, index2)
}
if !proto.Equal(config1, config2) {
return fmt.Errorf("configs did not match: %+v != %+v", config1, config2)
}
return compareDBs(t, fsm1.getDB(), fsm2.getDB(), false)
}
func compareDBs(t *testing.T, boltDB1, boltDB2 *bolt.DB, dataOnly bool) error {
t.Helper()
db1 := make(map[string]string)
db2 := make(map[string]string)
err := boltDB1.View(func(tx *bolt.Tx) error {
c := tx.Cursor()
for bucketName, _ := c.First(); bucketName != nil; bucketName, _ = c.Next() {
if dataOnly && !bytes.Equal(bucketName, dataBucketName) {
continue
}
b := tx.Bucket(bucketName)
cBucket := b.Cursor()
for k, v := cBucket.First(); k != nil; k, v = cBucket.Next() {
db1[string(k)] = base64.StdEncoding.EncodeToString(v)
}
}
return nil
})
if err != nil {
t.Fatal(err)
}
err = boltDB2.View(func(tx *bolt.Tx) error {
c := tx.Cursor()
for bucketName, _ := c.First(); bucketName != nil; bucketName, _ = c.Next() {
if dataOnly && !bytes.Equal(bucketName, dataBucketName) {
continue
}
b := tx.Bucket(bucketName)
c := b.Cursor()
for k, v := c.First(); k != nil; k, v = c.Next() {
db2[string(k)] = base64.StdEncoding.EncodeToString(v)
}
}
return nil
})
if err != nil {
t.Fatal(err)
}
if diff := deep.Equal(db1, db2); diff != nil {
return fmt.Errorf("%+v", diff)
}
return nil
}
func TestRaft_Backend(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
physical.ExerciseBackend(t, b)
}
func TestRaft_ParseAutopilotUpgradeVersion(t *testing.T) {
raftDir, err := ioutil.TempDir("", "vault-raft-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(raftDir)
conf := map[string]string{
"path": raftDir,
"node_id": "abc123",
"autopilot_upgrade_version": "hahano",
}
_, err = NewRaftBackend(conf, hclog.NewNullLogger())
if err == nil {
t.Fatal("expected an error but got none")
}
if !strings.Contains(err.Error(), "does not parse") {
t.Fatal("expected an error about unparseable versions but got none")
}
}
func TestRaft_Backend_LargeKey(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
key, err := base62.Random(bolt.MaxKeySize + 1)
if err != nil {
t.Fatal(err)
}
entry := &physical.Entry{Key: key, Value: []byte(key)}
err = b.Put(context.Background(), entry)
if err == nil {
t.Fatal("expected error for put entry")
}
if !strings.Contains(err.Error(), physical.ErrKeyTooLarge) {
t.Fatalf("expected %q, got %v", physical.ErrKeyTooLarge, err)
}
out, err := b.Get(context.Background(), entry.Key)
if err != nil {
t.Fatalf("unexpected error after failed put: %v", err)
}
if out != nil {
t.Fatal("expected response entry to be nil after a failed put")
}
}
func TestRaft_Backend_LargeValue(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
value := make([]byte, defaultMaxEntrySize+1)
rand.Read(value)
entry := &physical.Entry{Key: "foo", Value: value}
err := b.Put(context.Background(), entry)
if err == nil {
t.Fatal("expected error for put entry")
}
if !strings.Contains(err.Error(), physical.ErrValueTooLarge) {
t.Fatalf("expected %q, got %v", physical.ErrValueTooLarge, err)
}
out, err := b.Get(context.Background(), entry.Key)
if err != nil {
t.Fatalf("unexpected error after failed put: %v", err)
}
if out != nil {
t.Fatal("expected response entry to be nil after a failed put")
}
}
func TestRaft_TransactionalBackend_LargeKey(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
value := make([]byte, defaultMaxEntrySize+1)
rand.Read(value)
key, err := base62.Random(bolt.MaxKeySize + 1)
if err != nil {
t.Fatal(err)
}
txns := []*physical.TxnEntry{
{
Operation: physical.PutOperation,
Entry: &physical.Entry{
Key: key,
Value: []byte(key),
},
},
}
err = b.Transaction(context.Background(), txns)
if err == nil {
t.Fatal("expected error for transactions")
}
if !strings.Contains(err.Error(), physical.ErrKeyTooLarge) {
t.Fatalf("expected %q, got %v", physical.ErrValueTooLarge, err)
}
out, err := b.Get(context.Background(), txns[0].Entry.Key)
if err != nil {
t.Fatalf("unexpected error after failed put: %v", err)
}
if out != nil {
t.Fatal("expected response entry to be nil after a failed put")
}
}
func TestRaft_TransactionalBackend_LargeValue(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
value := make([]byte, defaultMaxEntrySize+1)
rand.Read(value)
txns := []*physical.TxnEntry{
{
Operation: physical.PutOperation,
Entry: &physical.Entry{
Key: "foo",
Value: value,
},
},
}
err := b.Transaction(context.Background(), txns)
if err == nil {
t.Fatal("expected error for transactions")
}
if !strings.Contains(err.Error(), physical.ErrValueTooLarge) {
t.Fatalf("expected %q, got %v", physical.ErrValueTooLarge, err)
}
out, err := b.Get(context.Background(), txns[0].Entry.Key)
if err != nil {
t.Fatalf("unexpected error after failed put: %v", err)
}
if out != nil {
t.Fatal("expected response entry to be nil after a failed put")
}
}
func TestRaft_Backend_ListPrefix(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
physical.ExerciseBackend_ListPrefix(t, b)
}
func TestRaft_TransactionalBackend(t *testing.T) {
b, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
physical.ExerciseTransactionalBackend(t, b)
}
func TestRaft_HABackend(t *testing.T) {
t.Skip()
raft, dir := getRaft(t, true, true)
defer os.RemoveAll(dir)
raft2, dir2 := getRaft(t, false, true)
defer os.RemoveAll(dir2)
// Add raft2 to the cluster
addPeer(t, raft, raft2)
physical.ExerciseHABackend(t, raft, raft2)
}
func TestRaft_Backend_ThreeNode(t *testing.T) {
raft1, dir := getRaft(t, true, true)
raft2, dir2 := getRaft(t, false, true)
raft3, dir3 := getRaft(t, false, true)
defer os.RemoveAll(dir)
defer os.RemoveAll(dir2)
defer os.RemoveAll(dir3)
// Add raft2 to the cluster
addPeer(t, raft1, raft2)
// Add raft3 to the cluster
addPeer(t, raft1, raft3)
physical.ExerciseBackend(t, raft1)
time.Sleep(10 * time.Second)
// Make sure all stores are the same
compareFSMs(t, raft1.fsm, raft2.fsm)
compareFSMs(t, raft1.fsm, raft3.fsm)
}
func TestRaft_GetOfflineConfig(t *testing.T) {
// Create 3 raft nodes
raft1, dir1 := getRaft(t, true, true)
raft2, dir2 := getRaft(t, false, true)
raft3, dir3 := getRaft(t, false, true)
defer os.RemoveAll(dir1)
defer os.RemoveAll(dir2)
defer os.RemoveAll(dir3)
// Add them all to the cluster
addPeer(t, raft1, raft2)
addPeer(t, raft1, raft3)
// Add some data into the FSM
physical.ExerciseBackend(t, raft1)
time.Sleep(10 * time.Second)
// Spin down the raft cluster and check that GetConfigurationOffline
// returns 3 voters
raft3.TeardownCluster(nil)
raft2.TeardownCluster(nil)
raft1.TeardownCluster(nil)
conf, err := raft1.GetConfigurationOffline()
if err != nil {
t.Fatal(err)
}
if len(conf.Servers) != 3 {
t.Fatalf("three raft nodes existed but we only see %d", len(conf.Servers))
}
for _, s := range conf.Servers {
if s.Voter != true {
t.Fatalf("one of the nodes is not a voter")
}
}
}
func TestRaft_Recovery(t *testing.T) {
// Create 4 raft nodes
raft1, dir1 := getRaft(t, true, true)
raft2, dir2 := getRaft(t, false, true)
raft3, dir3 := getRaft(t, false, true)
raft4, dir4 := getRaft(t, false, true)
defer os.RemoveAll(dir1)
defer os.RemoveAll(dir2)
defer os.RemoveAll(dir3)
defer os.RemoveAll(dir4)
// Add them all to the cluster
addPeer(t, raft1, raft2)
addPeer(t, raft1, raft3)
addPeer(t, raft1, raft4)
// Add some data into the FSM
physical.ExerciseBackend(t, raft1)
time.Sleep(10 * time.Second)
// Bring down all nodes
raft1.TeardownCluster(nil)
raft2.TeardownCluster(nil)
raft3.TeardownCluster(nil)
raft4.TeardownCluster(nil)
// Prepare peers.json
type RecoveryPeer struct {
ID string `json:"id"`
Address string `json:"address"`
NonVoter bool `json:"non_voter"`
}
// Leave out node 1 during recovery
peersList := make([]*RecoveryPeer, 0, 3)
peersList = append(peersList, &RecoveryPeer{
ID: raft1.NodeID(),
Address: raft1.NodeID(),
NonVoter: false,
})
peersList = append(peersList, &RecoveryPeer{
ID: raft2.NodeID(),
Address: raft2.NodeID(),
NonVoter: false,
})
peersList = append(peersList, &RecoveryPeer{
ID: raft4.NodeID(),
Address: raft4.NodeID(),
NonVoter: false,
})
peersJSONBytes, err := jsonutil.EncodeJSON(peersList)
if err != nil {
t.Fatal(err)
}
err = ioutil.WriteFile(filepath.Join(filepath.Join(dir1, raftState), "peers.json"), peersJSONBytes, 0o644)
if err != nil {
t.Fatal(err)
}
err = ioutil.WriteFile(filepath.Join(filepath.Join(dir2, raftState), "peers.json"), peersJSONBytes, 0o644)
if err != nil {
t.Fatal(err)
}
err = ioutil.WriteFile(filepath.Join(filepath.Join(dir4, raftState), "peers.json"), peersJSONBytes, 0o644)
if err != nil {
t.Fatal(err)
}
// Bring up the nodes again
raft1.SetupCluster(context.Background(), SetupOpts{})
raft2.SetupCluster(context.Background(), SetupOpts{})
raft4.SetupCluster(context.Background(), SetupOpts{})
peers, err := raft1.Peers(context.Background())
if err != nil {
t.Fatal(err)
}
if len(peers) != 3 {
t.Fatalf("failed to recover the cluster")
}
time.Sleep(10 * time.Second)
compareFSMs(t, raft1.fsm, raft2.fsm)
compareFSMs(t, raft1.fsm, raft4.fsm)
}
func TestRaft_TransactionalBackend_ThreeNode(t *testing.T) {
raft1, dir := getRaft(t, true, true)
raft2, dir2 := getRaft(t, false, true)
raft3, dir3 := getRaft(t, false, true)
defer os.RemoveAll(dir)
defer os.RemoveAll(dir2)
defer os.RemoveAll(dir3)
// Add raft2 to the cluster
addPeer(t, raft1, raft2)
// Add raft3 to the cluster
addPeer(t, raft1, raft3)
physical.ExerciseTransactionalBackend(t, raft1)
time.Sleep(10 * time.Second)
// Make sure all stores are the same
compareFSMs(t, raft1.fsm, raft2.fsm)
compareFSMs(t, raft1.fsm, raft3.fsm)
}
func TestRaft_Backend_Performance(t *testing.T) {
b, dir := getRaft(t, true, false)
defer os.RemoveAll(dir)
defaultConfig := raft.DefaultConfig()
localConfig := raft.DefaultConfig()
b.applyConfigSettings(localConfig)
if localConfig.ElectionTimeout != defaultConfig.ElectionTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.HeartbeatTimeout != defaultConfig.HeartbeatTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.LeaderLeaseTimeout != defaultConfig.LeaderLeaseTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
b.conf = map[string]string{
"path": dir,
"performance_multiplier": "5",
}
localConfig = raft.DefaultConfig()
b.applyConfigSettings(localConfig)
if localConfig.ElectionTimeout != defaultConfig.ElectionTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.HeartbeatTimeout != defaultConfig.HeartbeatTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.LeaderLeaseTimeout != defaultConfig.LeaderLeaseTimeout*5 {
t.Fatalf("bad config: %v", localConfig)
}
b.conf = map[string]string{
"path": dir,
"performance_multiplier": "1",
}
localConfig = raft.DefaultConfig()
b.applyConfigSettings(localConfig)
if localConfig.ElectionTimeout != defaultConfig.ElectionTimeout {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.HeartbeatTimeout != defaultConfig.HeartbeatTimeout {
t.Fatalf("bad config: %v", localConfig)
}
if localConfig.LeaderLeaseTimeout != defaultConfig.LeaderLeaseTimeout {
t.Fatalf("bad config: %v", localConfig)
}
}
func BenchmarkDB_Puts(b *testing.B) {
raft, dir := getRaft(b, true, false)
defer os.RemoveAll(dir)
raft2, dir2 := getRaft(b, true, false)
defer os.RemoveAll(dir2)
bench := func(b *testing.B, s physical.Backend, dataSize int) {
data, err := uuid.GenerateRandomBytes(dataSize)
if err != nil {
b.Fatal(err)
}
ctx := context.Background()
pe := &physical.Entry{
Value: data,
}
testName := b.Name()
b.ResetTimer()
for i := 0; i < b.N; i++ {
pe.Key = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%s-%d", testName, i))))
err := s.Put(ctx, pe)
if err != nil {
b.Fatal(err)
}
}
}
b.Run("256b", func(b *testing.B) { bench(b, raft, 256) })
b.Run("256kb", func(b *testing.B) { bench(b, raft2, 256*1024) })
}
func BenchmarkDB_Snapshot(b *testing.B) {
raft, dir := getRaft(b, true, false)
defer os.RemoveAll(dir)
data, err := uuid.GenerateRandomBytes(256 * 1024)
if err != nil {
b.Fatal(err)
}
ctx := context.Background()
pe := &physical.Entry{
Value: data,
}
testName := b.Name()
for i := 0; i < 100; i++ {
pe.Key = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%s-%d", testName, i))))
err = raft.Put(ctx, pe)
if err != nil {
b.Fatal(err)
}
}
bench := func(b *testing.B, s *FSM) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
pe.Key = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%s-%d", testName, i))))
s.writeTo(ctx, discardCloser{Writer: ioutil.Discard}, discardCloser{Writer: ioutil.Discard})
}
}
b.Run("256kb", func(b *testing.B) { bench(b, raft.fsm) })
}
type discardCloser struct {
io.Writer
}
func (d discardCloser) Close() error { return nil }
func (d discardCloser) CloseWithError(error) error { return nil }