/
server_test.go
2094 lines (1930 loc) · 58.6 KB
/
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"
"fmt"
"io/ioutil"
"math"
"net/http"
"os"
"path"
"path/filepath"
"reflect"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
"go.etcd.io/etcd/api/v3/membershippb"
"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/pkg/v3/idutil"
"go.etcd.io/etcd/pkg/v3/pbutil"
"go.etcd.io/etcd/pkg/v3/wait"
"go.etcd.io/etcd/raft/v3"
"go.etcd.io/etcd/raft/v3/raftpb"
"go.etcd.io/etcd/server/v3/auth"
"go.etcd.io/etcd/server/v3/config"
"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/cindex"
"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"
"go.etcd.io/etcd/server/v3/mvcc"
betesting "go.etcd.io/etcd/server/v3/mvcc/backend/testing"
"go.uber.org/zap"
"go.uber.org/zap/zaptest"
)
// TestDoLocalAction tests requests which do not need to go through raft to be applied,
// and are served through local data.
func TestDoLocalAction(t *testing.T) {
tests := []struct {
req pb.Request
wresp Response
werr error
wactions []testutil.Action
}{
{
pb.Request{Method: "GET", ID: 1, Wait: true},
Response{Watcher: v2store.NewNopWatcher()}, nil, []testutil.Action{{Name: "Watch"}},
},
{
pb.Request{Method: "GET", ID: 1},
Response{Event: &v2store.Event{}}, nil,
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
{
pb.Request{Method: "HEAD", ID: 1},
Response{Event: &v2store.Event{}}, nil,
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
{
pb.Request{Method: "BADMETHOD", ID: 1},
Response{}, ErrUnknownMethod, []testutil.Action{},
},
}
for i, tt := range tests {
st := mockstore.NewRecorder()
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
v2store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
resp, err := srv.Do(context.Background(), tt.req)
if err != tt.werr {
t.Fatalf("#%d: err = %+v, want %+v", i, err, tt.werr)
}
if !reflect.DeepEqual(resp, tt.wresp) {
t.Errorf("#%d: resp = %+v, want %+v", i, resp, tt.wresp)
}
gaction := st.Action()
if !reflect.DeepEqual(gaction, tt.wactions) {
t.Errorf("#%d: action = %+v, want %+v", i, gaction, tt.wactions)
}
}
}
// TestDoBadLocalAction tests server requests which do not need to go through consensus,
// and return errors when they fetch from local data.
func TestDoBadLocalAction(t *testing.T) {
storeErr := fmt.Errorf("bah")
tests := []struct {
req pb.Request
wactions []testutil.Action
}{
{
pb.Request{Method: "GET", ID: 1, Wait: true},
[]testutil.Action{{Name: "Watch"}},
},
{
pb.Request{Method: "GET", ID: 1},
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
{
pb.Request{Method: "HEAD", ID: 1},
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
}
for i, tt := range tests {
st := mockstore.NewErrRecorder(storeErr)
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
v2store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
resp, err := srv.Do(context.Background(), tt.req)
if err != storeErr {
t.Fatalf("#%d: err = %+v, want %+v", i, err, storeErr)
}
if !reflect.DeepEqual(resp, Response{}) {
t.Errorf("#%d: resp = %+v, want %+v", i, resp, Response{})
}
gaction := st.Action()
if !reflect.DeepEqual(gaction, tt.wactions) {
t.Errorf("#%d: action = %+v, want %+v", i, gaction, tt.wactions)
}
}
}
// TestApplyRepeat tests that server handles repeat raft messages gracefully
func TestApplyRepeat(t *testing.T) {
n := newNodeConfChangeCommitterStream()
n.readyc <- raft.Ready{
SoftState: &raft.SoftState{RaftState: raft.StateLeader},
}
cl := newTestCluster(t, nil)
st := v2store.New()
cl.SetStore(v2store.New())
cl.AddMember(&membership.Member{ID: 1234}, true)
r := newRaftNode(raftNodeConfig{
lg: zap.NewExample(),
Node: n,
raftStorage: raft.NewMemoryStorage(),
storage: mockstorage.NewStorageRecorder(""),
transport: newNopTransporter(),
})
s := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
r: *r,
v2store: st,
cluster: cl,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
consistIndex: cindex.NewFakeConsistentIndex(0),
}
s.applyV2 = &applierV2store{store: s.v2store, cluster: s.cluster}
s.start()
req := &pb.Request{Method: "QGET", ID: uint64(1)}
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)
}
if len(act) == 0 {
t.Fatalf("expected len(act)=0, got %d", len(act))
}
if err = <-stopc; err != nil {
t.Fatalf("error on stop (%v)", err)
}
}
func TestApplyRequest(t *testing.T) {
tests := []struct {
req pb.Request
wresp Response
wactions []testutil.Action
}{
// POST ==> Create
{
pb.Request{Method: "POST", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", true, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// POST ==> Create, with expiration
{
pb.Request{Method: "POST", ID: 1, Expiration: 1337},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", true, v2store.TTLOptionSet{ExpireTime: time.Unix(0, 1337)}},
},
},
},
// POST ==> Create, with dir
{
pb.Request{Method: "POST", ID: 1, Dir: true},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", true, "", true, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set
{
pb.Request{Method: "PUT", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []interface{}{"", false, "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set, with dir
{
pb.Request{Method: "PUT", ID: 1, Dir: true},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []interface{}{"", true, "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=true ==> Update
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(true)},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Update",
Params: []interface{}{"", "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=false ==> Create
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(false)},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", false, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=true *and* PrevIndex set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(true), PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=false *and* PrevIndex set ==> Create
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(false), PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", false, v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "bar", uint64(0), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex and PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "bar", uint64(1), "", v2store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// DELETE ==> Delete
{
pb.Request{Method: "DELETE", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Delete",
Params: []interface{}{"", false, false},
},
},
},
// DELETE with PrevIndex set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevIndex: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []interface{}{"", "", uint64(1)},
},
},
},
// DELETE with PrevValue set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []interface{}{"", "bar", uint64(0)},
},
},
},
// DELETE with PrevIndex *and* PrevValue set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevIndex: 5, PrevValue: "bar"},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []interface{}{"", "bar", uint64(5)},
},
},
},
// QGET ==> Get
{
pb.Request{Method: "QGET", ID: 1},
Response{Event: &v2store.Event{}},
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
// SYNC ==> DeleteExpiredKeys
{
pb.Request{Method: "SYNC", ID: 1},
Response{},
[]testutil.Action{
{
Name: "DeleteExpiredKeys",
Params: []interface{}{time.Unix(0, 0)},
},
},
},
{
pb.Request{Method: "SYNC", ID: 1, Time: 12345},
Response{},
[]testutil.Action{
{
Name: "DeleteExpiredKeys",
Params: []interface{}{time.Unix(0, 12345)},
},
},
},
// Unknown method - error
{
pb.Request{Method: "BADMETHOD", ID: 1},
Response{Err: ErrUnknownMethod},
[]testutil.Action{},
},
}
for i, tt := range tests {
st := mockstore.NewRecorder()
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
v2store: st,
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
resp := srv.applyV2Request((*RequestV2)(&tt.req), membership.ApplyBoth)
if !reflect.DeepEqual(resp, tt.wresp) {
t.Errorf("#%d: resp = %+v, want %+v", i, resp, tt.wresp)
}
gaction := st.Action()
if !reflect.DeepEqual(gaction, tt.wactions) {
t.Errorf("#%d: action = %#v, want %#v", i, gaction, tt.wactions)
}
}
}
func TestApplyRequestOnAdminMemberAttributes(t *testing.T) {
cl := newTestCluster(t, []*membership.Member{{ID: 1}})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
v2store: mockstore.NewRecorder(),
cluster: cl,
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
req := pb.Request{
Method: "PUT",
ID: 1,
Path: membership.MemberAttributesStorePath(1),
Val: `{"Name":"abc","ClientURLs":["http://127.0.0.1:2379"]}`,
}
srv.applyV2Request((*RequestV2)(&req), membership.ApplyBoth)
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)
}
}
func TestApplyConfChangeError(t *testing.T) {
cl := membership.NewCluster(zaptest.NewLogger(t))
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: zap.NewExample(),
r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: n}),
cluster: cl,
}
_, err := srv.applyConfChange(tt.cc, nil, true)
if 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: []interface{}{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) {
cl := membership.NewCluster(zaptest.NewLogger(t))
cl.SetStore(v2store.New())
for i := 1; i <= 3; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)}, true)
}
r := newRaftNode(raftNodeConfig{
lg: zap.NewExample(),
Node: newNodeNop(),
transport: newNopTransporter(),
})
lg := zaptest.NewLogger(t)
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
id: 1,
r: *r,
cluster: cl,
beHooks: &backendHooks{lg: lg},
}
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)
cl := membership.NewCluster(zaptest.NewLogger(t))
cl.SetStore(v2store.New())
cl.AddMember(&membership.Member{ID: types.ID(1)}, true)
be, _ := betesting.NewDefaultTmpBackend(t)
defer betesting.Close(t, be)
cindex.CreateMetaBucket(be.BatchTx())
ci := cindex.NewConsistentIndex(be)
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: lg,
id: 1,
r: *realisticRaftNode(lg),
cluster: cl,
w: wait.New(),
consistIndex: ci,
beHooks: &backendHooks{lg: lg, indexer: ci},
}
// 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),
}}
_, appliedi, _ := srv.apply(ents, &raftpb.ConfState{})
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}}, *membership.UnsafeConfStateFromBackend(lg, tx))
})
rindex, _ := cindex.ReadConsistentIndex(be.ReadTx())
assert.Equal(t, consistIndex, rindex)
}
func realisticRaftNode(lg *zap.Logger) *raftNode {
storage := raft.NewMemoryStorage()
storage.SetHardState(raftpb.HardState{Commit: 0, Term: 0})
c := &raft.Config{
ID: 1,
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 apply 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())
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,
id: 2,
r: *r,
cluster: cl,
w: wait.New(),
consistIndex: ci,
beHooks: &backendHooks{lg: lg, indexer: ci},
}
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)
}
_, _, shouldStop := srv.apply(ents, &raftpb.ConfState{})
if !shouldStop {
t.Errorf("shouldStop = %t, want %t", shouldStop, true)
}
}
func TestDoProposal(t *testing.T) {
tests := []pb.Request{
{Method: "POST", ID: 1},
{Method: "PUT", ID: 1},
{Method: "DELETE", ID: 1},
{Method: "GET", ID: 1, Quorum: true},
}
for i, tt := range tests {
st := mockstore.NewRecorder()
r := newRaftNode(raftNodeConfig{
lg: zap.NewExample(),
Node: newNodeCommitter(),
storage: mockstorage.NewStorageRecorder(""),
raftStorage: raft.NewMemoryStorage(),
transport: newNopTransporter(),
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
Cfg: config.ServerConfig{Logger: zap.NewExample(), TickMs: 1, SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries},
r: *r,
v2store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
consistIndex: cindex.NewFakeConsistentIndex(0),
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
srv.start()
resp, err := srv.Do(context.Background(), tt)
srv.Stop()
action := st.Action()
if len(action) != 1 {
t.Errorf("#%d: len(action) = %d, want 1", i, len(action))
}
if err != nil {
t.Fatalf("#%d: err = %v, want nil", i, err)
}
// resp.Index is set in Do() based on the raft state; may either be 0 or 1
wresp := Response{Event: &v2store.Event{}, Index: resp.Index}
if !reflect.DeepEqual(resp, wresp) {
t.Errorf("#%d: resp = %v, want %v", i, resp, wresp)
}
}
}
func TestDoProposalCancelled(t *testing.T) {
wt := mockwait.NewRecorder()
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
Cfg: config.ServerConfig{Logger: zap.NewExample(), TickMs: 1, SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries},
r: *newRaftNode(raftNodeConfig{Node: newNodeNop()}),
w: wt,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := srv.Do(ctx, pb.Request{Method: "PUT"})
if err != ErrCanceled {
t.Fatalf("err = %v, want %v", err, ErrCanceled)
}
w := []testutil.Action{{Name: "Register"}, {Name: "Trigger"}}
if !reflect.DeepEqual(wt.Action(), w) {
t.Errorf("wt.action = %+v, want %+v", wt.Action(), w)
}
}
func TestDoProposalTimeout(t *testing.T) {
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
Cfg: config.ServerConfig{Logger: zap.NewExample(), TickMs: 1, SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries},
r: *newRaftNode(raftNodeConfig{Node: newNodeNop()}),
w: mockwait.NewNop(),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
ctx, cancel := context.WithTimeout(context.Background(), 0)
_, err := srv.Do(ctx, pb.Request{Method: "PUT"})
cancel()
if err != ErrTimeout {
t.Fatalf("err = %v, want %v", err, ErrTimeout)
}
}
func TestDoProposalStopped(t *testing.T) {
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
Cfg: config.ServerConfig{Logger: zap.NewExample(), TickMs: 1, SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries},
r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: newNodeNop()}),
w: mockwait.NewNop(),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
srv.stopping = make(chan struct{})
close(srv.stopping)
_, err := srv.Do(context.Background(), pb.Request{Method: "PUT", ID: 1})
if err != ErrStopped {
t.Errorf("err = %v, want %v", err, ErrStopped)
}
}
// TestSync tests sync 1. is nonblocking 2. proposes SYNC request.
func TestSync(t *testing.T) {
n := newNodeRecorder()
ctx, cancel := context.WithCancel(context.Background())
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: n}),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
ctx: ctx,
cancel: cancel,
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
// check that sync is non-blocking
done := make(chan struct{}, 1)
go func() {
srv.sync(10 * time.Second)
done <- struct{}{}
}()
select {
case <-done:
case <-time.After(time.Second):
t.Fatal("sync should be non-blocking but did not return after 1s!")
}
action, _ := n.Wait(1)
if len(action) != 1 {
t.Fatalf("len(action) = %d, want 1", len(action))
}
if action[0].Name != "Propose" {
t.Fatalf("action = %s, want Propose", action[0].Name)
}
data := action[0].Params[0].([]byte)
var r pb.Request
if err := r.Unmarshal(data); err != nil {
t.Fatalf("unmarshal request error: %v", err)
}
if r.Method != "SYNC" {
t.Errorf("method = %s, want SYNC", r.Method)
}
}
// TestSyncTimeout tests the case that sync 1. is non-blocking 2. cancel request
// after timeout
func TestSyncTimeout(t *testing.T) {
n := newProposalBlockerRecorder()
ctx, cancel := context.WithCancel(context.Background())
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: n}),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
ctx: ctx,
cancel: cancel,
}
srv.applyV2 = &applierV2store{store: srv.v2store, cluster: srv.cluster}
// check that sync is non-blocking
done := make(chan struct{}, 1)
go func() {
srv.sync(0)
done <- struct{}{}
}()
select {
case <-done:
case <-time.After(time.Second):
t.Fatal("sync should be non-blocking but did not return after 1s!")
}
w := []testutil.Action{{Name: "Propose blocked"}}
if g, _ := n.Wait(1); !reflect.DeepEqual(g, w) {
t.Errorf("action = %v, want %v", g, w)
}
}
// TODO: TestNoSyncWhenNoLeader
// TestSyncTrigger tests that the server proposes a SYNC request when its sync timer ticks
func TestSyncTrigger(t *testing.T) {
n := newReadyNode()
st := make(chan time.Time, 1)
tk := &time.Ticker{C: st}
r := newRaftNode(raftNodeConfig{
lg: zap.NewExample(),
Node: n,
raftStorage: raft.NewMemoryStorage(),
transport: newNopTransporter(),
storage: mockstorage.NewStorageRecorder(""),
})
srv := &EtcdServer{
lgMu: new(sync.RWMutex),
lg: zap.NewExample(),
Cfg: config.ServerConfig{Logger: zap.NewExample(), TickMs: 1, SnapshotCatchUpEntries: DefaultSnapshotCatchUpEntries},
r: *r,
v2store: mockstore.NewNop(),
SyncTicker: tk,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
// trigger the server to become a leader and accept sync requests
go func() {
srv.start()
n.readyc <- raft.Ready{
SoftState: &raft.SoftState{
RaftState: raft.StateLeader,
},
}
// trigger a sync request
st <- time.Time{}
}()
action, _ := n.Wait(1)
go srv.Stop()
if len(action) != 1 {
t.Fatalf("len(action) = %d, want 1", len(action))
}
if action[0].Name != "Propose" {
t.Fatalf("action = %s, want Propose", action[0].Name)
}
data := action[0].Params[0].([]byte)