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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 (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path"
"reflect"
"testing"
"time"
pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
"github.com/coreos/etcd/etcdserver/membership"
"github.com/coreos/etcd/lease"
"github.com/coreos/etcd/mvcc"
"github.com/coreos/etcd/mvcc/backend"
"github.com/coreos/etcd/pkg/idutil"
"github.com/coreos/etcd/pkg/mock/mockstorage"
"github.com/coreos/etcd/pkg/mock/mockstore"
"github.com/coreos/etcd/pkg/mock/mockwait"
"github.com/coreos/etcd/pkg/pbutil"
"github.com/coreos/etcd/pkg/testutil"
"github.com/coreos/etcd/pkg/types"
"github.com/coreos/etcd/pkg/wait"
"github.com/coreos/etcd/raft"
"github.com/coreos/etcd/raft/raftpb"
"github.com/coreos/etcd/rafthttp"
"github.com/coreos/etcd/store"
"golang.org/x/net/context"
)
// 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: store.NewNopWatcher()}, nil, []testutil.Action{{Name: "Watch"}},
},
{
pb.Request{Method: "GET", ID: 1},
Response{Event: &store.Event{}}, nil,
[]testutil.Action{
{
Name: "Get",
Params: []interface{}{"", false, false},
},
},
},
{
pb.Request{Method: "HEAD", ID: 1},
Response{Event: &store.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{
store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
resp, err := srv.Do(context.TODO(), 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{
store: 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(nil)
st := store.New()
cl.SetStore(store.New())
cl.AddMember(&membership.Member{ID: 1234})
s := &EtcdServer{
r: raftNode{
Node: n,
raftStorage: raft.NewMemoryStorage(),
storage: mockstorage.NewStorageRecorder(""),
transport: rafthttp.NewNopTransporter(),
ticker: &time.Ticker{},
},
Cfg: &ServerConfig{},
store: st,
cluster: cl,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
}
s.applyV2 = &applierV2store{store: s.store, 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)
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: &store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", true, store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// POST ==> Create, with expiration
{
pb.Request{Method: "POST", ID: 1, Expiration: 1337},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", true, store.TTLOptionSet{ExpireTime: time.Unix(0, 1337)}},
},
},
},
// POST ==> Create, with dir
{
pb.Request{Method: "POST", ID: 1, Dir: true},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", true, "", true, store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set
{
pb.Request{Method: "PUT", ID: 1},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []interface{}{"", false, "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT ==> Set, with dir
{
pb.Request{Method: "PUT", ID: 1, Dir: true},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Set",
Params: []interface{}{"", true, "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=true ==> Update
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(true)},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Update",
Params: []interface{}{"", "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevExist=false ==> Create
{
pb.Request{Method: "PUT", ID: 1, PrevExist: pbutil.Boolp(false)},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", false, store.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: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "", uint64(1), "", store.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: &store.Event{}},
[]testutil.Action{
{
Name: "Create",
Params: []interface{}{"", false, "", false, store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "", uint64(1), "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevValue: "bar"},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "bar", uint64(0), "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// PUT with PrevIndex and PrevValue set ==> CompareAndSwap
{
pb.Request{Method: "PUT", ID: 1, PrevIndex: 1, PrevValue: "bar"},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndSwap",
Params: []interface{}{"", "bar", uint64(1), "", store.TTLOptionSet{ExpireTime: time.Time{}}},
},
},
},
// DELETE ==> Delete
{
pb.Request{Method: "DELETE", ID: 1},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "Delete",
Params: []interface{}{"", false, false},
},
},
},
// DELETE with PrevIndex set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevIndex: 1},
Response{Event: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []interface{}{"", "", uint64(1)},
},
},
},
// DELETE with PrevValue set ==> CompareAndDelete
{
pb.Request{Method: "DELETE", ID: 1, PrevValue: "bar"},
Response{Event: &store.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: &store.Event{}},
[]testutil.Action{
{
Name: "CompareAndDelete",
Params: []interface{}{"", "bar", uint64(5)},
},
},
},
// QGET ==> Get
{
pb.Request{Method: "QGET", ID: 1},
Response{Event: &store.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{store: st}
srv.applyV2 = &applierV2store{store: srv.store, cluster: srv.cluster}
resp := srv.applyV2Request(&tt.req)
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([]*membership.Member{{ID: 1}})
srv := &EtcdServer{
store: mockstore.NewRecorder(),
cluster: cl,
}
srv.applyV2 = &applierV2store{store: srv.store, 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(&req)
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("")
cl.SetStore(store.New())
for i := 1; i <= 4; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)})
}
cl.RemoveMember(4)
tests := []struct {
cc raftpb.ConfChange
werr error
}{
{
raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: 4,
},
membership.ErrIDRemoved,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeUpdateNode,
NodeID: 4,
},
membership.ErrIDRemoved,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: 1,
},
membership.ErrIDExists,
},
{
raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: 5,
},
membership.ErrIDNotFound,
},
}
for i, tt := range tests {
n := newNodeRecorder()
srv := &EtcdServer{
r: raftNode{Node: n},
cluster: cl,
Cfg: &ServerConfig{},
}
_, err := srv.applyConfChange(tt.cc, nil)
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}
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("")
cl.SetStore(store.New())
for i := 1; i <= 3; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)})
}
srv := &EtcdServer{
id: 1,
r: raftNode{
Node: newNodeNop(),
transport: rafthttp.NewNopTransporter(),
},
cluster: cl,
}
cc := raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: 2,
}
// remove non-local member
shouldStop, err := srv.applyConfChange(cc, &raftpb.ConfState{})
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{})
if err != nil {
t.Fatalf("unexpected error %v", err)
}
if !shouldStop {
t.Errorf("shouldStop = %t, want %t", shouldStop, true)
}
}
// TestApplyMultiConfChangeShouldStop ensures that apply will return shouldStop
// if the local member is removed along with other conf updates.
func TestApplyMultiConfChangeShouldStop(t *testing.T) {
cl := membership.NewCluster("")
cl.SetStore(store.New())
for i := 1; i <= 5; i++ {
cl.AddMember(&membership.Member{ID: types.ID(i)})
}
srv := &EtcdServer{
id: 2,
r: raftNode{
Node: newNodeNop(),
transport: rafthttp.NewNopTransporter(),
},
cluster: cl,
w: wait.New(),
}
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()
srv := &EtcdServer{
Cfg: &ServerConfig{TickMs: 1},
r: raftNode{
Node: newNodeCommitter(),
storage: mockstorage.NewStorageRecorder(""),
raftStorage: raft.NewMemoryStorage(),
transport: rafthttp.NewNopTransporter(),
ticker: &time.Ticker{},
},
store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
}
srv.applyV2 = &applierV2store{store: srv.store, 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)
}
wresp := Response{Event: &store.Event{}}
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{
Cfg: &ServerConfig{TickMs: 1},
r: raftNode{Node: newNodeNop()},
w: wt,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.store, 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{
Cfg: &ServerConfig{TickMs: 1},
r: raftNode{Node: newNodeNop()},
w: mockwait.NewNop(),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.store, cluster: srv.cluster}
ctx, _ := context.WithTimeout(context.Background(), 0)
_, err := srv.Do(ctx, pb.Request{Method: "PUT"})
if err != ErrTimeout {
t.Fatalf("err = %v, want %v", err, ErrTimeout)
}
}
func TestDoProposalStopped(t *testing.T) {
srv := &EtcdServer{
Cfg: &ServerConfig{TickMs: 1},
r: raftNode{Node: newNodeNop()},
w: mockwait.NewNop(),
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.store, 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()
srv := &EtcdServer{
r: raftNode{Node: n},
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.store, cluster: srv.cluster}
// check that sync is non-blocking
done := make(chan struct{})
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()
srv := &EtcdServer{
r: raftNode{Node: n},
reqIDGen: idutil.NewGenerator(0, time.Time{}),
}
srv.applyV2 = &applierV2store{store: srv.store, cluster: srv.cluster}
// check that sync is non-blocking
done := make(chan struct{})
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}
srv := &EtcdServer{
Cfg: &ServerConfig{TickMs: 1},
r: raftNode{
Node: n,
raftStorage: raft.NewMemoryStorage(),
transport: rafthttp.NewNopTransporter(),
storage: mockstorage.NewStorageRecorder(""),
ticker: &time.Ticker{},
},
store: 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)
var req pb.Request
if err := req.Unmarshal(data); err != nil {
t.Fatalf("error unmarshalling data: %v", err)
}
if req.Method != "SYNC" {
t.Fatalf("unexpected proposed request: %#v", req.Method)
}
// wait on stop message
<-n.Chan()
}
// snapshot should snapshot the store and cut the persistent
func TestSnapshot(t *testing.T) {
be, tmpPath := backend.NewDefaultTmpBackend()
defer func() {
os.RemoveAll(tmpPath)
}()
s := raft.NewMemoryStorage()
s.Append([]raftpb.Entry{{Index: 1}})
st := mockstore.NewRecorderStream()
p := mockstorage.NewStorageRecorderStream("")
srv := &EtcdServer{
Cfg: &ServerConfig{},
r: raftNode{
Node: newNodeNop(),
raftStorage: s,
storage: p,
},
store: st,
}
srv.kv = mvcc.New(be, &lease.FakeLessor{}, &srv.consistIndex)
srv.be = be
ch := make(chan struct{}, 2)
go func() {
gaction, _ := p.Wait(1)
defer func() { ch <- struct{}{} }()
if len(gaction) != 1 {
t.Fatalf("len(action) = %d, want 1", len(gaction))
}
if !reflect.DeepEqual(gaction[0], testutil.Action{Name: "SaveSnap"}) {
t.Errorf("action = %s, want SaveSnap", gaction[0])
}
}()
go func() {
gaction, _ := st.Wait(2)
defer func() { ch <- struct{}{} }()
if len(gaction) != 2 {
t.Fatalf("len(action) = %d, want 2", len(gaction))
}
if !reflect.DeepEqual(gaction[0], testutil.Action{Name: "Clone"}) {
t.Errorf("action = %s, want Clone", gaction[0])
}
if !reflect.DeepEqual(gaction[1], testutil.Action{Name: "SaveNoCopy"}) {
t.Errorf("action = %s, want SaveNoCopy", gaction[1])
}
}()
srv.snapshot(1, raftpb.ConfState{Nodes: []uint64{1}})
<-ch
<-ch
}
// Applied > SnapCount should trigger a SaveSnap event
func TestTriggerSnap(t *testing.T) {
be, tmpPath := backend.NewDefaultTmpBackend()
defer func() {
os.RemoveAll(tmpPath)
}()
snapc := 10
st := mockstore.NewRecorder()
p := mockstorage.NewStorageRecorderStream("")
srv := &EtcdServer{
Cfg: &ServerConfig{TickMs: 1},
snapCount: uint64(snapc),
r: raftNode{
Node: newNodeCommitter(),
raftStorage: raft.NewMemoryStorage(),
storage: p,
transport: rafthttp.NewNopTransporter(),
ticker: &time.Ticker{},
},
store: st,
reqIDGen: idutil.NewGenerator(0, time.Time{}),
SyncTicker: &time.Ticker{},
}
srv.applyV2 = &applierV2store{store: srv.store, cluster: srv.cluster}
srv.kv = mvcc.New(be, &lease.FakeLessor{}, &srv.consistIndex)
srv.be = be
srv.start()
donec := make(chan struct{})
go func() {
wcnt := 2 + snapc
gaction, _ := p.Wait(wcnt)
// each operation is recorded as a Save
// (SnapCount+1) * Puts + SaveSnap = (SnapCount+1) * Save + SaveSnap
if len(gaction) != wcnt {
t.Fatalf("len(action) = %d, want %d", len(gaction), wcnt)
}
if !reflect.DeepEqual(gaction[wcnt-1], testutil.Action{Name: "SaveSnap"}) {
t.Errorf("action = %s, want SaveSnap", gaction[wcnt-1])
}
close(donec)
}()
for i := 0; i < snapc+1; i++ {
srv.Do(context.Background(), pb.Request{Method: "PUT"})
}
<-donec
srv.Stop()
}
// TestConcurrentApplyAndSnapshotV3 will send out snapshots concurrently with
// proposals.
func TestConcurrentApplyAndSnapshotV3(t *testing.T) {
const (
// snapshots that may queue up at once without dropping
maxInFlightMsgSnap = 16
)
n := newNopReadyNode()
st := store.New()
cl := membership.NewCluster("abc")
cl.SetStore(st)
testdir, err := ioutil.TempDir(os.TempDir(), "testsnapdir")
if err != nil {
t.Fatalf("Couldn't open tempdir (%v)", err)
}
defer os.RemoveAll(testdir)
if err := os.MkdirAll(testdir+"/member/snap", 0755); err != nil {
t.Fatalf("Couldn't make snap dir (%v)", err)
}
rs := raft.NewMemoryStorage()
tr, snapDoneC := rafthttp.NewSnapTransporter(testdir)
s := &EtcdServer{
Cfg: &ServerConfig{
DataDir: testdir,
},
r: raftNode{
isIDRemoved: func(id uint64) bool { return cl.IsIDRemoved(types.ID(id)) },
Node: n,
transport: tr,
storage: mockstorage.NewStorageRecorder(testdir),
raftStorage: rs,
msgSnapC: make(chan raftpb.Message, maxInFlightMsgSnap),
ticker: &time.Ticker{},
},
store: st,
cluster: cl,
SyncTicker: &time.Ticker{},
}
s.applyV2 = &applierV2store{store: s.store, cluster: s.cluster}
be, tmpPath := backend.NewDefaultTmpBackend()
defer func() {
os.RemoveAll(tmpPath)