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server_test.go
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// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package etcdserver
import (
"context"
"encoding/json"
errorspkg "errors"
"fmt"
"math"
"net/http"
"os"
"path/filepath"
"reflect"
"strings"
"sync"
"testing"
"time"
"github.com/coreos/go-semver/semver"
"github.com/golang/protobuf/proto"
"github.com/prometheus/client_golang/prometheus"
ptestutil "github.com/prometheus/client_golang/prometheus/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/zap"
"go.uber.org/zap/zaptest"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/api/v3/membershippb"
"go.etcd.io/etcd/api/v3/version"
"go.etcd.io/etcd/client/pkg/v3/fileutil"
"go.etcd.io/etcd/client/pkg/v3/testutil"
"go.etcd.io/etcd/client/pkg/v3/types"
"go.etcd.io/etcd/client/pkg/v3/verify"
"go.etcd.io/etcd/pkg/v3/featuregate"
"go.etcd.io/etcd/pkg/v3/idutil"
"go.etcd.io/etcd/pkg/v3/notify"
"go.etcd.io/etcd/pkg/v3/pbutil"
"go.etcd.io/etcd/pkg/v3/wait"
"go.etcd.io/etcd/server/v3/auth"
"go.etcd.io/etcd/server/v3/config"
"go.etcd.io/etcd/server/v3/etcdserver/api"
"go.etcd.io/etcd/server/v3/etcdserver/api/membership"
"go.etcd.io/etcd/server/v3/etcdserver/api/rafthttp"
"go.etcd.io/etcd/server/v3/etcdserver/api/snap"
"go.etcd.io/etcd/server/v3/etcdserver/api/v2store"
"go.etcd.io/etcd/server/v3/etcdserver/api/v3alarm"
apply2 "go.etcd.io/etcd/server/v3/etcdserver/apply"
"go.etcd.io/etcd/server/v3/etcdserver/cindex"
"go.etcd.io/etcd/server/v3/etcdserver/errors"
"go.etcd.io/etcd/server/v3/features"
"go.etcd.io/etcd/server/v3/lease"
"go.etcd.io/etcd/server/v3/mock/mockstorage"
"go.etcd.io/etcd/server/v3/mock/mockstore"
"go.etcd.io/etcd/server/v3/mock/mockwait"
serverstorage "go.etcd.io/etcd/server/v3/storage"
"go.etcd.io/etcd/server/v3/storage/backend"
betesting "go.etcd.io/etcd/server/v3/storage/backend/testing"
"go.etcd.io/etcd/server/v3/storage/mvcc"
"go.etcd.io/etcd/server/v3/storage/schema"
"go.etcd.io/raft/v3"
"go.etcd.io/raft/v3/raftpb"
)
// TestApplyRepeat tests that server handles repeat raft messages gracefully
func TestApplyRepeat(t *testing.T) {
lg := zaptest.NewLogger(t)
n := newNodeConfChangeCommitterStream()
n.readyc <- raft.Ready{
SoftState: &raft.SoftState{RaftState: raft.StateLeader},
}
cl := newTestCluster(t)
st := v2store.New()
cl.SetStore(v2store.New())
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
cl.AddMember(&membership.Member{ID: 1234}, true)
r := newRaftNode(raftNodeConfig{
lg: zaptest.NewLogger(t),
Node: n,
raftStorage: raft.NewMemoryStorage(),
storage: mockstorage.NewStorageRecorder(""),
transport: newNopTransporter(),
})
s := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
r: *r,
v2store: st,
cluster: cl,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
consistIndex: cindex.NewFakeConsistentIndex(0),
uberApply: uberApplierMock{},
}
s.start()
req := &pb.InternalRaftRequest{
Header: &pb.RequestHeader{ID: 1},
Put: &pb.PutRequest{Key: []byte("foo"), Value: []byte("bar")},
}
ents := []raftpb.Entry{{Index: 1, Data: pbutil.MustMarshal(req)}}
n.readyc <- raft.Ready{CommittedEntries: ents}
// dup msg
n.readyc <- raft.Ready{CommittedEntries: ents}
// use a conf change to block until dup msgs are all processed
cc := &raftpb.ConfChange{Type: raftpb.ConfChangeRemoveNode, NodeID: 2}
ents = []raftpb.Entry{{
Index: 2,
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(cc),
}}
n.readyc <- raft.Ready{CommittedEntries: ents}
// wait for conf change message
act, err := n.Wait(1)
// wait for stop message (async to avoid deadlock)
stopc := make(chan error, 1)
go func() {
_, werr := n.Wait(1)
stopc <- werr
}()
s.Stop()
// only want to confirm etcdserver won't panic; no data to check
if err != nil {
t.Fatal(err)
}
require.NotEmptyf(t, act, "expected len(act)=0, got %d", len(act))
err = <-stopc
require.NoErrorf(t, err, "error on stop (%v)", err)
}
type uberApplierMock struct{}
func (uberApplierMock) Apply(r *pb.InternalRaftRequest) *apply2.Result {
return &apply2.Result{}
}
// TestV2SetMemberAttributes validates support of hybrid v3.5 cluster which still uses v2 request.
// TODO: Remove in v3.7
func TestV2SetMemberAttributes(t *testing.T) {
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl := newTestClusterWithBackend(t, []*membership.Member{{ID: 1}}, be)
cfg := config.ServerConfig{
ServerFeatureGate: features.NewDefaultServerFeatureGate("test", nil),
}
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
v2store: mockstore.NewRecorder(),
cluster: cl,
consistIndex: cindex.NewConsistentIndex(be),
w: wait.New(),
Cfg: cfg,
}
as, err := v3alarm.NewAlarmStore(srv.lg, schema.NewAlarmBackend(srv.lg, be))
if err != nil {
t.Fatal(err)
}
srv.alarmStore = as
srv.uberApply = srv.NewUberApplier()
req := pb.Request{
Method: "PUT",
ID: 1,
Path: membership.MemberAttributesStorePath(1),
Val: `{"Name":"abc","ClientURLs":["http://127.0.0.1:2379"]}`,
}
data, err := proto.Marshal(&req)
if err != nil {
t.Fatal(err)
}
srv.applyEntryNormal(&raftpb.Entry{
Data: data,
}, membership.ApplyV2storeOnly)
w := membership.Attributes{Name: "abc", ClientURLs: []string{"http://127.0.0.1:2379"}}
if g := cl.Member(1).Attributes; !reflect.DeepEqual(g, w) {
t.Errorf("attributes = %v, want %v", g, w)
}
}
// TestV2SetClusterVersion validates support of hybrid v3.5 cluster which still uses v2 request.
// TODO: Remove in v3.7
func TestV2SetClusterVersion(t *testing.T) {
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl := newTestClusterWithBackend(t, []*membership.Member{}, be)
cl.SetVersion(semver.New("3.4.0"), api.UpdateCapability, membership.ApplyBoth)
cfg := config.ServerConfig{
ServerFeatureGate: features.NewDefaultServerFeatureGate("test", nil),
}
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
v2store: mockstore.NewRecorder(),
cluster: cl,
consistIndex: cindex.NewConsistentIndex(be),
w: wait.New(),
Cfg: cfg,
}
as, err := v3alarm.NewAlarmStore(srv.lg, schema.NewAlarmBackend(srv.lg, be))
if err != nil {
t.Fatal(err)
}
srv.alarmStore = as
srv.uberApply = srv.NewUberApplier()
req := pb.Request{
Method: "PUT",
ID: 1,
Path: membership.StoreClusterVersionKey(),
Val: "3.5.0",
}
data, err := proto.Marshal(&req)
if err != nil {
t.Fatal(err)
}
srv.applyEntryNormal(&raftpb.Entry{
Data: data,
}, membership.ApplyV2storeOnly)
if g := cl.Version(); !reflect.DeepEqual(*g, version.V3_5) {
t.Errorf("attributes = %v, want %v", *g, version.V3_5)
}
}
func TestApplyConfStateWithRestart(t *testing.T) {
n := newNodeRecorder()
srv := newServer(t, n)
defer srv.Cleanup()
assert.Equal(t, uint64(0), srv.consistIndex.ConsistentIndex())
var nodeID uint64 = 1
memberData, err := json.Marshal(&membership.Member{ID: types.ID(nodeID), RaftAttributes: membership.RaftAttributes{PeerURLs: []string{""}}})
if err != nil {
t.Fatal(err)
}
entries := []raftpb.Entry{
{
Term: 1,
Index: 1,
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(&raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: nodeID,
Context: memberData,
}),
},
{
Term: 1,
Index: 2,
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(&raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: nodeID,
}),
},
{
Term: 1,
Index: 3,
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(&raftpb.ConfChange{
Type: raftpb.ConfChangeUpdateNode,
NodeID: nodeID,
Context: memberData,
}),
},
}
want := []testutil.Action{
{
Name: "ApplyConfChange",
Params: []any{raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: nodeID,
Context: memberData,
}},
},
{
Name: "ApplyConfChange",
Params: []any{raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: nodeID,
}},
},
// This action is expected to fail validation, thus NodeID is set to 0
{
Name: "ApplyConfChange",
Params: []any{raftpb.ConfChange{
Type: raftpb.ConfChangeUpdateNode,
Context: memberData,
NodeID: 0,
}},
},
}
confState := raftpb.ConfState{}
t.Log("Applying entries for the first time")
srv.apply(entries, &confState, nil)
if got, _ := n.Wait(len(want)); !reflect.DeepEqual(got, want) {
t.Errorf("actions don't match\n got %+v\n want %+v", got, want)
}
t.Log("Simulating etcd restart by clearing v2 store")
srv.cluster.SetStore(v2store.New())
t.Log("Reapplying same entries after restart")
srv.apply(entries, &confState, nil)
if got, _ := n.Wait(2 * len(want)); !reflect.DeepEqual(got[len(want):], want) {
t.Errorf("actions don't match\n got %+v\n want %+v", got, want)
}
}
func newServer(t *testing.T, recorder *nodeRecorder) *EtcdServer {
lg := zaptest.NewLogger(t)
be, _ := betesting.NewDefaultTmpBackend(t)
t.Cleanup(func() {
betesting.Close(t, be)
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
r: *newRaftNode(raftNodeConfig{lg: lg, Node: recorder}),
cluster: membership.NewCluster(lg),
consistIndex: cindex.NewConsistentIndex(be),
}
srv.cluster.SetBackend(schema.NewMembershipBackend(lg, be))
srv.cluster.SetStore(v2store.New())
srv.beHooks = serverstorage.NewBackendHooks(lg, srv.consistIndex)
srv.r.transport = newNopTransporter()
srv.w = mockwait.NewNop()
return srv
}
func TestApplyConfChangeError(t *testing.T) {
lg := zaptest.NewLogger(t)
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl := membership.NewCluster(lg)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
cl.SetStore(v2store.New())
for i := 1; i <= 4; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)}, true)
}
cl.RemoveMember(4, true)
attr := membership.RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 1)}}
ctx, err := json.Marshal(&membership.Member{ID: types.ID(1), RaftAttributes: attr})
if err != nil {
t.Fatal(err)
}
attr = membership.RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 4)}}
ctx4, err := json.Marshal(&membership.Member{ID: types.ID(1), RaftAttributes: attr})
if err != nil {
t.Fatal(err)
}
attr = membership.RaftAttributes{PeerURLs: []string{fmt.Sprintf("http://127.0.0.1:%d", 5)}}
ctx5, err := json.Marshal(&membership.Member{ID: types.ID(1), RaftAttributes: attr})
if err != nil {
t.Fatal(err)
}
tests := []struct {
cc raftpb.ConfChange
werr error
}{
{
raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: 4,
Context: ctx4,
},
membership.ErrIDRemoved,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeUpdateNode,
NodeID: 4,
Context: ctx4,
},
membership.ErrIDRemoved,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: 1,
Context: ctx,
},
membership.ErrIDExists,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: 5,
Context: ctx5,
},
membership.ErrIDNotFound,
},
}
for i, tt := range tests {
n := newNodeRecorder()
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
r: *newRaftNode(raftNodeConfig{lg: zaptest.NewLogger(t), Node: n}),
cluster: cl,
}
_, err := srv.applyConfChange(tt.cc, nil, true)
if !errorspkg.Is(err, tt.werr) {
t.Errorf("#%d: applyConfChange error = %v, want %v", i, err, tt.werr)
}
cc := raftpb.ConfChange{Type: tt.cc.Type, NodeID: raft.None, Context: tt.cc.Context}
w := []testutil.Action{
{
Name: "ApplyConfChange",
Params: []any{cc},
},
}
if g, _ := n.Wait(1); !reflect.DeepEqual(g, w) {
t.Errorf("#%d: action = %+v, want %+v", i, g, w)
}
}
}
func TestApplyConfChangeShouldStop(t *testing.T) {
lg := zaptest.NewLogger(t)
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl := membership.NewCluster(lg)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
cl.SetStore(v2store.New())
for i := 1; i <= 3; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)}, true)
}
r := newRaftNode(raftNodeConfig{
lg: zaptest.NewLogger(t),
Node: newNodeNop(),
transport: newNopTransporter(),
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
memberID: 1,
r: *r,
cluster: cl,
beHooks: serverstorage.NewBackendHooks(lg, nil),
}
cc := raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: 2,
}
// remove non-local member
shouldStop, err := srv.applyConfChange(cc, &raftpb.ConfState{}, true)
if err != nil {
t.Fatalf("unexpected error %v", err)
}
if shouldStop {
t.Errorf("shouldStop = %t, want %t", shouldStop, false)
}
// remove local member
cc.NodeID = 1
shouldStop, err = srv.applyConfChange(cc, &raftpb.ConfState{}, true)
if err != nil {
t.Fatalf("unexpected error %v", err)
}
if !shouldStop {
t.Errorf("shouldStop = %t, want %t", shouldStop, true)
}
}
// TestApplyConfigChangeUpdatesConsistIndex ensures a config change also updates the consistIndex
// where consistIndex equals to applied index.
func TestApplyConfigChangeUpdatesConsistIndex(t *testing.T) {
lg := zaptest.NewLogger(t)
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl := membership.NewCluster(zaptest.NewLogger(t))
cl.SetStore(v2store.New())
cl.SetBackend(schema.NewMembershipBackend(lg, be))
cl.AddMember(&membership.Member{ID: types.ID(1)}, true)
schema.CreateMetaBucket(be.BatchTx())
ci := cindex.NewConsistentIndex(be)
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
memberID: 1,
r: *realisticRaftNode(lg, 1, nil),
cluster: cl,
w: wait.New(),
consistIndex: ci,
beHooks: serverstorage.NewBackendHooks(lg, ci),
}
defer srv.r.raftNodeConfig.Stop()
// create EntryConfChange entry
now := time.Now()
urls, err := types.NewURLs([]string{"http://whatever:123"})
if err != nil {
t.Fatal(err)
}
m := membership.NewMember("", urls, "", &now)
m.ID = types.ID(2)
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
cc := &raftpb.ConfChange{Type: raftpb.ConfChangeAddNode, NodeID: 2, Context: b}
ents := []raftpb.Entry{{
Index: 2,
Term: 4,
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(cc),
}}
raftAdvancedC := make(chan struct{}, 1)
raftAdvancedC <- struct{}{}
_, appliedi, _ := srv.apply(ents, &raftpb.ConfState{}, raftAdvancedC)
consistIndex := srv.consistIndex.ConsistentIndex()
assert.Equal(t, uint64(2), appliedi)
t.Run("verify-backend", func(t *testing.T) {
tx := be.BatchTx()
tx.Lock()
defer tx.Unlock()
srv.beHooks.OnPreCommitUnsafe(tx)
assert.Equal(t, raftpb.ConfState{Voters: []uint64{2}}, *schema.UnsafeConfStateFromBackend(lg, tx))
})
rindex, _ := schema.ReadConsistentIndex(be.ReadTx())
assert.Equal(t, consistIndex, rindex)
}
func realisticRaftNode(lg *zap.Logger, id uint64, snap *raftpb.Snapshot) *raftNode {
storage := raft.NewMemoryStorage()
storage.SetHardState(raftpb.HardState{Commit: 0, Term: 0})
if snap != nil {
err := storage.ApplySnapshot(*snap)
if err != nil {
panic(err)
}
}
c := &raft.Config{
ID: id,
ElectionTick: 10,
HeartbeatTick: 1,
Storage: storage,
MaxSizePerMsg: math.MaxUint64,
MaxInflightMsgs: 256,
}
n := raft.RestartNode(c)
r := newRaftNode(raftNodeConfig{
lg: lg,
Node: n,
transport: newNopTransporter(),
})
return r
}
// TestApplyMultiConfChangeShouldStop ensures that toApply will return shouldStop
// if the local member is removed along with other conf updates.
func TestApplyMultiConfChangeShouldStop(t *testing.T) {
lg := zaptest.NewLogger(t)
cl := membership.NewCluster(lg)
cl.SetStore(v2store.New())
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
for i := 1; i <= 5; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)}, true)
}
r := newRaftNode(raftNodeConfig{
lg: lg,
Node: newNodeNop(),
transport: newNopTransporter(),
})
ci := cindex.NewFakeConsistentIndex(0)
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
memberID: 2,
r: *r,
cluster: cl,
w: wait.New(),
consistIndex: ci,
beHooks: serverstorage.NewBackendHooks(lg, ci),
}
var ents []raftpb.Entry
for i := 1; i <= 4; i++ {
ent := raftpb.Entry{
Term: 1,
Index: uint64(i),
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(
&raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: uint64(i),
}),
}
ents = append(ents, ent)
}
raftAdvancedC := make(chan struct{}, 1)
raftAdvancedC <- struct{}{}
_, _, shouldStop := srv.apply(ents, &raftpb.ConfState{}, raftAdvancedC)
if !shouldStop {
t.Errorf("shouldStop = %t, want %t", shouldStop, true)
}
}
// TestSnapshotDisk should save the snapshot to disk and release old snapshots
func TestSnapshotDisk(t *testing.T) {
revertFunc := verify.DisableVerifications()
defer revertFunc()
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
s := raft.NewMemoryStorage()
s.Append([]raftpb.Entry{{Index: 1}})
st := mockstore.NewRecorderStream()
p := mockstorage.NewStorageRecorderStream("")
r := newRaftNode(raftNodeConfig{
lg: zaptest.NewLogger(t),
Node: newNodeNop(),
raftStorage: s,
storage: p,
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
r: *r,
v2store: st,
consistIndex: cindex.NewConsistentIndex(be),
}
srv.kv = mvcc.New(zaptest.NewLogger(t), be, &lease.FakeLessor{}, mvcc.StoreConfig{})
defer func() {
assert.NoError(t, srv.kv.Close())
}()
srv.be = be
cl := membership.NewCluster(zaptest.NewLogger(t))
srv.cluster = cl
ch := make(chan struct{}, 1)
go func() {
gaction, _ := p.Wait(2)
defer func() { ch <- struct{}{} }()
assert.Len(t, gaction, 2)
assert.Equal(t, testutil.Action{Name: "SaveSnap"}, gaction[0])
assert.Equal(t, testutil.Action{Name: "Release"}, gaction[1])
}()
ep := etcdProgress{appliedi: 1, confState: raftpb.ConfState{Voters: []uint64{1}}}
srv.snapshot(&ep, true)
<-ch
assert.Empty(t, st.Action())
assert.Equal(t, uint64(1), ep.diskSnapshotIndex)
assert.Equal(t, uint64(1), ep.memorySnapshotIndex)
}
func TestSnapshotMemory(t *testing.T) {
revertFunc := verify.DisableVerifications()
defer revertFunc()
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
s := raft.NewMemoryStorage()
s.Append([]raftpb.Entry{{Index: 1}})
st := mockstore.NewRecorderStream()
p := mockstorage.NewStorageRecorderStream("")
r := newRaftNode(raftNodeConfig{
lg: zaptest.NewLogger(t),
Node: newNodeNop(),
raftStorage: s,
storage: p,
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zaptest.NewLogger(t),
r: *r,
v2store: st,
consistIndex: cindex.NewConsistentIndex(be),
}
srv.kv = mvcc.New(zaptest.NewLogger(t), be, &lease.FakeLessor{}, mvcc.StoreConfig{})
defer func() {
assert.NoError(t, srv.kv.Close())
}()
srv.be = be
cl := membership.NewCluster(zaptest.NewLogger(t))
srv.cluster = cl
ch := make(chan struct{}, 1)
go func() {
gaction, _ := p.Wait(1)
defer func() { ch <- struct{}{} }()
assert.Empty(t, gaction)
}()
ep := etcdProgress{appliedi: 1, confState: raftpb.ConfState{Voters: []uint64{1}}}
srv.snapshot(&ep, false)
<-ch
assert.Empty(t, st.Action())
assert.Equal(t, uint64(0), ep.diskSnapshotIndex)
assert.Equal(t, uint64(1), ep.memorySnapshotIndex)
}
// TestSnapshotOrdering ensures raft persists snapshot onto disk before
// snapshot db is applied.
func TestSnapshotOrdering(t *testing.T) {
// Ignore the snapshot index verification in unit test, because
// it doesn't follow the e2e applying logic.
revertFunc := verify.DisableVerifications()
defer revertFunc()
lg := zaptest.NewLogger(t)
n := newNopReadyNode()
st := v2store.New()
cl := membership.NewCluster(lg)
be, _ := betesting.NewDefaultTmpBackend(t)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
testdir := t.TempDir()
snapdir := filepath.Join(testdir, "member", "snap")
if err := os.MkdirAll(snapdir, 0o755); err != nil {
t.Fatalf("couldn't make snap dir (%v)", err)
}
rs := raft.NewMemoryStorage()
p := mockstorage.NewStorageRecorderStream(testdir)
tr, snapDoneC := newSnapTransporter(lg, snapdir)
r := newRaftNode(raftNodeConfig{
lg: lg,
isIDRemoved: func(id uint64) bool { return cl.IsIDRemoved(types.ID(id)) },
Node: n,
transport: tr,
storage: p,
raftStorage: rs,
})
ci := cindex.NewConsistentIndex(be)
cfg := config.ServerConfig{
Logger: lg,
DataDir: testdir,
SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries,
ServerFeatureGate: features.NewDefaultServerFeatureGate("test", lg),
}
s := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
Cfg: cfg,
r: *r,
v2store: st,
snapshotter: snap.New(lg, snapdir),
cluster: cl,
SyncTicker: &time.Ticker{},
consistIndex: ci,
beHooks: serverstorage.NewBackendHooks(lg, ci),
}
s.kv = mvcc.New(lg, be, &lease.FakeLessor{}, mvcc.StoreConfig{})
s.be = be
s.start()
defer s.Stop()
n.readyc <- raft.Ready{Messages: []raftpb.Message{{Type: raftpb.MsgSnap}}}
go func() {
// get the snapshot sent by the transport
snapMsg := <-snapDoneC
// Snapshot first triggers raftnode to persists the snapshot onto disk
// before renaming db snapshot file to db
snapMsg.Snapshot.Metadata.Index = 1
n.readyc <- raft.Ready{Snapshot: *snapMsg.Snapshot}
}()
ac := <-p.Chan()
if ac.Name != "Save" {
t.Fatalf("expected Save, got %+v", ac)
}
if ac := <-p.Chan(); ac.Name != "SaveSnap" {
t.Fatalf("expected SaveSnap, got %+v", ac)
}
if ac := <-p.Chan(); ac.Name != "Save" {
t.Fatalf("expected Save, got %+v", ac)
}
// confirm snapshot file still present before calling SaveSnap
snapPath := filepath.Join(snapdir, fmt.Sprintf("%016x.snap.db", 1))
if !fileutil.Exist(snapPath) {
t.Fatalf("expected file %q, got missing", snapPath)
}
// unblock SaveSnapshot, etcdserver now permitted to move snapshot file
if ac := <-p.Chan(); ac.Name != "Sync" {
t.Fatalf("expected Sync, got %+v", ac)
}
if ac := <-p.Chan(); ac.Name != "Release" {
t.Fatalf("expected Release, got %+v", ac)
}
}
// TestConcurrentApplyAndSnapshotV3 will send out snapshots concurrently with
// proposals.
func TestConcurrentApplyAndSnapshotV3(t *testing.T) {
// Ignore the snapshot index verification in unit test, because
// it doesn't follow the e2e applying logic.
revertFunc := verify.DisableVerifications()
defer revertFunc()
lg := zaptest.NewLogger(t)
n := newNopReadyNode()
st := v2store.New()
cl := membership.NewCluster(lg)
cl.SetStore(st)
be, _ := betesting.NewDefaultTmpBackend(t)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
testdir := t.TempDir()
if err := os.MkdirAll(testdir+"/member/snap", 0o755); err != nil {
t.Fatalf("Couldn't make snap dir (%v)", err)
}
rs := raft.NewMemoryStorage()
tr, snapDoneC := newSnapTransporter(lg, testdir)
r := newRaftNode(raftNodeConfig{
lg: lg,
isIDRemoved: func(id uint64) bool { return cl.IsIDRemoved(types.ID(id)) },
Node: n,
transport: tr,
storage: mockstorage.NewStorageRecorder(testdir),
raftStorage: rs,
})
ci := cindex.NewConsistentIndex(be)
s := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
Cfg: config.ServerConfig{
Logger: lg,
DataDir: testdir,
SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries,
ServerFeatureGate: features.NewDefaultServerFeatureGate("test", lg),
},
r: *r,
v2store: st,
snapshotter: snap.New(lg, testdir),
cluster: cl,
SyncTicker: &time.Ticker{},
consistIndex: ci,
beHooks: serverstorage.NewBackendHooks(lg, ci),
firstCommitInTerm: notify.NewNotifier(),
lessor: &lease.FakeLessor{},
uberApply: uberApplierMock{},
authStore: auth.NewAuthStore(lg, schema.NewAuthBackend(lg, be), nil, 1),
}
s.kv = mvcc.New(lg, be, &lease.FakeLessor{}, mvcc.StoreConfig{})
s.be = be
s.start()
defer s.Stop()
// submit applied entries and snap entries
idx := uint64(0)
outdated := 0
accepted := 0
for k := 1; k <= 101; k++ {
idx++
ch := s.w.Register(idx)
req := &pb.InternalRaftRequest{
Header: &pb.RequestHeader{ID: idx},
Put: &pb.PutRequest{Key: []byte("foo"), Value: []byte("bar")},
}
ent := raftpb.Entry{Index: idx, Data: pbutil.MustMarshal(req)}
ready := raft.Ready{Entries: []raftpb.Entry{ent}}
n.readyc <- ready
ready = raft.Ready{CommittedEntries: []raftpb.Entry{ent}}
n.readyc <- ready
// "idx" applied
<-ch
// one snapshot for every two messages
if k%2 != 0 {
continue
}
n.readyc <- raft.Ready{Messages: []raftpb.Message{{Type: raftpb.MsgSnap}}}
// get the snapshot sent by the transport
snapMsg := <-snapDoneC
// If the snapshot trails applied records, recovery will panic
// since there's no allocated snapshot at the place of the
// snapshot record. This only happens when the applier and the
// snapshot sender get out of sync.
if snapMsg.Snapshot.Metadata.Index == idx {
idx++
snapMsg.Snapshot.Metadata.Index = idx
ready = raft.Ready{Snapshot: *snapMsg.Snapshot}
n.readyc <- ready
accepted++
} else {
outdated++
}
// don't wait for the snapshot to complete, move to next message
}
if accepted != 50 {
t.Errorf("accepted=%v, want 50", accepted)
}
if outdated != 0 {
t.Errorf("outdated=%v, want 0", outdated)
}
}
// TestAddMember tests AddMember can propose and perform node addition.
func TestAddMember(t *testing.T) {
lg := zaptest.NewLogger(t)
n := newNodeConfChangeCommitterRecorder()
n.readyc <- raft.Ready{
SoftState: &raft.SoftState{RaftState: raft.StateLeader},
}
cl := newTestCluster(t)
st := v2store.New()
cl.SetStore(st)
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cl.SetBackend(schema.NewMembershipBackend(lg, be))
r := newRaftNode(raftNodeConfig{
lg: lg,
Node: n,
raftStorage: raft.NewMemoryStorage(),
storage: mockstorage.NewStorageRecorder(""),
transport: newNopTransporter(),
})
s := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
r: *r,
v2store: st,
cluster: cl,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
consistIndex: cindex.NewFakeConsistentIndex(0),
beHooks: serverstorage.NewBackendHooks(lg, nil),
}
s.start()
m := membership.Member{ID: 1234, RaftAttributes: membership.RaftAttributes{PeerURLs: []string{"foo"}}}
_, err := s.AddMember(context.Background(), m)
gaction := n.Action()
s.Stop()
if err != nil {
t.Fatalf("AddMember error: %v", err)
}
wactions := []testutil.Action{{Name: "ProposeConfChange:ConfChangeAddNode"}, {Name: "ApplyConfChange:ConfChangeAddNode"}}
if !reflect.DeepEqual(gaction, wactions) {
t.Errorf("action = %v, want %v", gaction, wactions)
}
if cl.Member(1234) == nil {