func TestStreamReaderDialRequest(t *testing.T) {
for i, tt := range []streamType{streamTypeMsgApp, streamTypeMessage, streamTypeMsgAppV2} {
tr := &roundTripperRecorder{}
sr := &streamReader{
tr: tr,
picker: mustNewURLPicker(t, []string{"http://localhost:2380"}),
local: types.ID(1),
remote: types.ID(2),
cid: types.ID(1),
msgAppTerm: 1,
}
sr.dial(tt)
req := tr.Request()
wurl := fmt.Sprintf("http://localhost:2380" + tt.endpoint() + "/1")
if req.URL.String() != wurl {
t.Errorf("#%d: url = %s, want %s", i, req.URL.String(), wurl)
}
if w := "GET"; req.Method != w {
t.Errorf("#%d: method = %s, want %s", i, req.Method, w)
}
if g := req.Header.Get("X-Etcd-Cluster-ID"); g != "1" {
t.Errorf("#%d: header X-Etcd-Cluster-ID = %s, want 1", i, g)
}
if g := req.Header.Get("X-Raft-To"); g != "2" {
t.Errorf("#%d: header X-Raft-To = %s, want 2", i, g)
}
if g := req.Header.Get("X-Raft-Term"); tt == streamTypeMsgApp && g != "1" {
t.Errorf("#%d: header X-Raft-Term = %s, want 1", i, g)
}
}
}
func TestClusterUpdateAttributes(t *testing.T) {
name := "etcd"
clientURLs := []string{"http://127.0.0.1:4001"}
tests := []struct {
mems []*Member
removed map[types.ID]bool
wmems []*Member
}{
// update attributes of existing member
{
[]*Member{
newTestMember(1, nil, "", nil),
},
nil,
[]*Member{
newTestMember(1, nil, name, clientURLs),
},
},
// update attributes of removed member
{
nil,
map[types.ID]bool{types.ID(1): true},
nil,
},
}
for i, tt := range tests {
c := newTestCluster(tt.mems)
c.removed = tt.removed
c.UpdateAttributes(types.ID(1), Attributes{Name: name, ClientURLs: clientURLs})
if g := c.Members(); !reflect.DeepEqual(g, tt.wmems) {
t.Errorf("#%d: members = %+v, want %+v", i, g, tt.wmems)
}
}
}
func TestPipelinePost(t *testing.T) {
tr := &roundTripperRecorder{}
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
p := newPipeline(tr, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, nil)
if err := p.post([]byte("some data")); err != nil {
t.Fatalf("unexpect post error: %v", err)
}
p.stop()
if g := tr.Request().Method; g != "POST" {
t.Errorf("method = %s, want %s", g, "POST")
}
if g := tr.Request().URL.String(); g != "http://localhost:2380/raft" {
t.Errorf("url = %s, want %s", g, "http://localhost:2380/raft")
}
if g := tr.Request().Header.Get("Content-Type"); g != "application/protobuf" {
t.Errorf("content type = %s, want %s", g, "application/protobuf")
}
if g := tr.Request().Header.Get("X-Server-Version"); g != version.Version {
t.Errorf("version = %s, want %s", g, version.Version)
}
if g := tr.Request().Header.Get("X-Min-Cluster-Version"); g != version.MinClusterVersion {
t.Errorf("min version = %s, want %s", g, version.MinClusterVersion)
}
if g := tr.Request().Header.Get("X-Etcd-Cluster-ID"); g != "1" {
t.Errorf("cluster id = %s, want %s", g, "1")
}
b, err := ioutil.ReadAll(tr.Request().Body)
if err != nil {
t.Fatalf("unexpected ReadAll error: %v", err)
}
if string(b) != "some data" {
t.Errorf("body = %s, want %s", b, "some data")
}
}
func readWAL(waldir string, snap walpb.Snapshot) (w *wal.WAL, id, cid types.ID, st raftpb.HardState, ents []raftpb.Entry) {
var (
err error
wmetadata []byte
)
repaired := false
for {
if w, err = wal.Open(waldir, snap); err != nil {
plog.Fatalf("open wal error: %v", err)
}
if wmetadata, st, ents, err = w.ReadAll(); err != nil {
w.Close()
// we can only repair ErrUnexpectedEOF and we never repair twice.
if repaired || err != io.ErrUnexpectedEOF {
plog.Fatalf("read wal error (%v) and cannot be repaired", err)
}
if !wal.Repair(waldir) {
plog.Fatalf("WAL error (%v) cannot be repaired", err)
} else {
plog.Infof("repaired WAL error (%v)", err)
repaired = true
}
continue
}
break
}
var metadata pb.Metadata
pbutil.MustUnmarshal(&metadata, wmetadata)
id = types.ID(metadata.NodeID)
cid = types.ID(metadata.ClusterID)
return
}
func TestTransportAdd(t *testing.T) {
ls := stats.NewLeaderStats("")
term := uint64(10)
tr := &Transport{
LeaderStats: ls,
streamRt: &roundTripperRecorder{},
term: term,
peers: make(map[types.ID]Peer),
prober: probing.NewProber(nil),
}
tr.AddPeer(1, []string{"http://localhost:2380"})
if _, ok := ls.Followers["1"]; !ok {
t.Errorf("FollowerStats[1] is nil, want exists")
}
s, ok := tr.peers[types.ID(1)]
if !ok {
tr.Stop()
t.Fatalf("senders[1] is nil, want exists")
}
// duplicate AddPeer is ignored
tr.AddPeer(1, []string{"http://localhost:2380"})
ns := tr.peers[types.ID(1)]
if s != ns {
t.Errorf("sender = %v, want %v", ns, s)
}
tr.Stop()
if g := s.(*peer).msgAppReader.msgAppTerm; g != term {
t.Errorf("peer.term = %d, want %d", g, term)
}
}
func TestServeRaftStreamPrefix(t *testing.T) {
tests := []struct {
path string
wtype streamType
}{
{
RaftStreamPrefix + "/message/1",
streamTypeMessage,
},
{
RaftStreamPrefix + "/msgapp/1",
streamTypeMsgAppV2,
},
// backward compatibility
{
RaftStreamPrefix + "/1",
streamTypeMsgApp,
},
}
for i, tt := range tests {
req, err := http.NewRequest("GET", "http://localhost:2380"+tt.path, nil)
if err != nil {
t.Fatalf("#%d: could not create request: %#v", i, err)
}
req.Header.Set("X-Etcd-Cluster-ID", "1")
req.Header.Set("X-Server-Version", version.Version)
req.Header.Set("X-Raft-To", "2")
wterm := "1"
req.Header.Set("X-Raft-Term", wterm)
peer := newFakePeer()
peerGetter := &fakePeerGetter{peers: map[types.ID]Peer{types.ID(1): peer}}
h := newStreamHandler(peerGetter, &fakeRaft{}, types.ID(2), types.ID(1))
rw := httptest.NewRecorder()
go h.ServeHTTP(rw, req)
var conn *outgoingConn
select {
case conn = <-peer.connc:
case <-time.After(time.Second):
t.Fatalf("#%d: failed to attach outgoingConn", i)
}
if g := rw.Header().Get("X-Server-Version"); g != version.Version {
t.Errorf("#%d: X-Server-Version = %s, want %s", i, g, version.Version)
}
if conn.t != tt.wtype {
t.Errorf("#%d: type = %s, want %s", i, conn.t, tt.wtype)
}
if conn.termStr != wterm {
t.Errorf("#%d: term = %s, want %s", i, conn.termStr, wterm)
}
conn.Close()
}
}
func TestTransportUpdate(t *testing.T) {
peer := newFakePeer()
tr := &Transport{
peers: map[types.ID]Peer{types.ID(1): peer},
prober: probing.NewProber(nil),
}
u := "http://localhost:2380"
tr.UpdatePeer(types.ID(1), []string{u})
wurls := types.URLs(testutil.MustNewURLs(t, []string{"http://localhost:2380"}))
if !reflect.DeepEqual(peer.urls, wurls) {
t.Errorf("urls = %+v, want %+v", peer.urls, wurls)
}
}
// TestPipelineSendFailed tests that when send func meets the post error,
// it increases fail count in stats.
func TestPipelineSendFailed(t *testing.T) {
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
p := newPipeline(newRespRoundTripper(0, errors.New("blah")), picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p.msgc <- raftpb.Message{Type: raftpb.MsgApp}
testutil.WaitSchedule()
p.stop()
fs.Lock()
defer fs.Unlock()
if fs.Counts.Fail != 1 {
t.Errorf("fail = %d, want 1", fs.Counts.Fail)
}
}
func TestTransportRemove(t *testing.T) {
tr := &Transport{
LeaderStats: stats.NewLeaderStats(""),
streamRt: &roundTripperRecorder{},
peers: make(map[types.ID]Peer),
prober: probing.NewProber(nil),
}
tr.AddPeer(1, []string{"http://localhost:2380"})
tr.RemovePeer(types.ID(1))
defer tr.Stop()
if _, ok := tr.peers[types.ID(1)]; ok {
t.Fatalf("senders[1] exists, want removed")
}
}
// TestStreamWriterAttachBadOutgoingConn tests that streamWriter with bad
// outgoingConn will close the outgoingConn and fall back to non-working status.
func TestStreamWriterAttachBadOutgoingConn(t *testing.T) {
sw := startStreamWriter(types.ID(1), newPeerStatus(types.ID(1)), &stats.FollowerStats{}, &fakeRaft{})
defer sw.stop()
wfc := &fakeWriteFlushCloser{err: errors.New("blah")}
sw.attach(&outgoingConn{t: streamTypeMessage, Writer: wfc, Flusher: wfc, Closer: wfc})
sw.msgc <- raftpb.Message{}
testutil.WaitSchedule()
// no longer working
if _, ok := sw.writec(); ok != false {
t.Errorf("working = %v, want false", ok)
}
if wfc.closed != true {
t.Errorf("failed to close the underlying connection")
}
}
func newTestMember(id uint64, peerURLs []string, name string, clientURLs []string) *Member {
return &Member{
ID: types.ID(id),
RaftAttributes: RaftAttributes{PeerURLs: peerURLs},
Attributes: Attributes{Name: name, ClientURLs: clientURLs},
}
}
func (t *Transport) Send(msgs []raftpb.Message) {
for _, m := range msgs {
// intentionally dropped message
if m.To == 0 {
continue
}
to := types.ID(m.To)
if m.Type != raftpb.MsgProp { // proposal message does not have a valid term
t.maybeUpdatePeersTerm(m.Term)
}
p, ok := t.peers[to]
if ok {
if m.Type == raftpb.MsgApp {
t.ServerStats.SendAppendReq(m.Size())
}
p.Send(m)
continue
}
g, ok := t.remotes[to]
if ok {
g.Send(m)
continue
}
plog.Debugf("ignored message %s (sent to unknown peer %s)", m.Type, to)
}
}
func (c *cluster) RemoveMember(t *testing.T, id uint64) {
// send remove request to the cluster
cc := mustNewHTTPClient(t, c.URLs())
ma := client.NewMembersAPI(cc)
ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
if err := ma.Remove(ctx, types.ID(id).String()); err != nil {
t.Fatalf("unexpected remove error %v", err)
}
cancel()
newMembers := make([]*member, 0)
for _, m := range c.Members {
if uint64(m.s.ID()) != id {
newMembers = append(newMembers, m)
} else {
select {
case <-m.s.StopNotify():
m.Terminate(t)
// 1s stop delay + election timeout + 1s disk and network delay + connection write timeout
// TODO: remove connection write timeout by selecting on http response closeNotifier
// blocking on https://github.com/golang/go/issues/9524
case <-time.After(time.Second + time.Duration(electionTicks)*tickDuration + time.Second + rafthttp.ConnWriteTimeout):
t.Fatalf("failed to remove member %s in time", m.s.ID())
}
}
}
c.Members = newMembers
c.waitMembersMatch(t, c.HTTPMembers())
}
// ValidateConfigurationChange takes a proposed ConfChange and
// ensures that it is still valid.
func (c *cluster) ValidateConfigurationChange(cc raftpb.ConfChange) error {
members, removed := membersFromStore(c.store)
id := types.ID(cc.NodeID)
if removed[id] {
return ErrIDRemoved
}
switch cc.Type {
case raftpb.ConfChangeAddNode:
if members[id] != nil {
return ErrIDExists
}
urls := make(map[string]bool)
for _, m := range members {
for _, u := range m.PeerURLs {
urls[u] = true
}
}
m := new(Member)
if err := json.Unmarshal(cc.Context, m); err != nil {
plog.Panicf("unmarshal member should never fail: %v", err)
}
for _, u := range m.PeerURLs {
if urls[u] {
return ErrPeerURLexists
}
}
case raftpb.ConfChangeRemoveNode:
if members[id] == nil {
return ErrIDNotFound
}
case raftpb.ConfChangeUpdateNode:
if members[id] == nil {
return ErrIDNotFound
}
urls := make(map[string]bool)
for _, m := range members {
if m.ID == id {
continue
}
for _, u := range m.PeerURLs {
urls[u] = true
}
}
m := new(Member)
if err := json.Unmarshal(cc.Context, m); err != nil {
plog.Panicf("unmarshal member should never fail: %v", err)
}
for _, u := range m.PeerURLs {
if urls[u] {
return ErrPeerURLexists
}
}
default:
plog.Panicf("ConfChange type should be either AddNode, RemoveNode or UpdateNode")
}
return nil
}
func (c *cluster) genID() {
mIDs := c.MemberIDs()
b := make([]byte, 8*len(mIDs))
for i, id := range mIDs {
binary.BigEndian.PutUint64(b[8*i:], uint64(id))
}
hash := sha1.Sum(b)
c.id = types.ID(binary.BigEndian.Uint64(hash[:8]))
}
func TestMsgApp(t *testing.T) {
tests := []raftpb.Message{
{
Type: raftpb.MsgApp,
From: 1,
To: 2,
Term: 1,
LogTerm: 1,
Index: 3,
Entries: []raftpb.Entry{{Term: 1, Index: 4}},
},
{
Type: raftpb.MsgApp,
From: 1,
To: 2,
Term: 1,
LogTerm: 1,
Index: 0,
Entries: []raftpb.Entry{
{Term: 1, Index: 1, Data: []byte("some data")},
{Term: 1, Index: 2, Data: []byte("some data")},
{Term: 1, Index: 3, Data: []byte("some data")},
},
},
linkHeartbeatMessage,
}
for i, tt := range tests {
b := &bytes.Buffer{}
enc := &msgAppEncoder{w: b, fs: &stats.FollowerStats{}}
if err := enc.encode(tt); err != nil {
t.Errorf("#%d: unexpected encode message error: %v", i, err)
continue
}
dec := &msgAppDecoder{r: b, local: types.ID(tt.To), remote: types.ID(tt.From), term: tt.Term}
m, err := dec.decode()
if err != nil {
t.Errorf("#%d: unexpected decode message error: %v", i, err)
continue
}
if !reflect.DeepEqual(m, tt) {
t.Errorf("#%d: message = %+v, want %+v", i, m, tt)
}
}
}
// TestPipelineSend tests that pipeline could send data using roundtripper
// and increase success count in stats.
func TestPipelineSend(t *testing.T) {
tr := &roundTripperRecorder{}
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
p := newPipeline(tr, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p.msgc <- raftpb.Message{Type: raftpb.MsgApp}
testutil.WaitSchedule()
p.stop()
if tr.Request() == nil {
t.Errorf("sender fails to post the data")
}
fs.Lock()
defer fs.Unlock()
if fs.Counts.Success != 1 {
t.Errorf("success = %d, want 1", fs.Counts.Success)
}
}
func TestStopBlockedPipeline(t *testing.T) {
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
p := newPipeline(newRoundTripperBlocker(), picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, nil)
// send many messages that most of them will be blocked in buffer
for i := 0; i < connPerPipeline*10; i++ {
p.msgc <- raftpb.Message{}
}
done := make(chan struct{})
go func() {
p.stop()
done <- struct{}{}
}()
select {
case <-done:
case <-time.After(time.Second):
t.Fatalf("failed to stop pipeline in 1s")
}
}
func (cr *streamReader) decodeLoop(rc io.ReadCloser, t streamType) error {
var dec decoder
cr.mu.Lock()
switch t {
case streamTypeMsgApp:
dec = &msgAppDecoder{r: rc, local: cr.local, remote: cr.remote, term: cr.msgAppTerm}
case streamTypeMsgAppV2:
dec = newMsgAppV2Decoder(rc, cr.local, cr.remote)
case streamTypeMessage:
dec = &messageDecoder{r: rc}
default:
plog.Panicf("unhandled stream type %s", t)
}
cr.closer = rc
cr.mu.Unlock()
for {
m, err := dec.decode()
switch {
case err != nil:
cr.mu.Lock()
cr.close()
cr.mu.Unlock()
return err
case isLinkHeartbeatMessage(m):
// do nothing for linkHeartbeatMessage
default:
recvc := cr.recvc
if m.Type == raftpb.MsgProp {
recvc = cr.propc
}
select {
case recvc <- m:
default:
if cr.status.isActive() {
plog.Warningf("dropped %s from %s since receiving buffer is full", m.Type, types.ID(m.From))
} else {
plog.Debugf("dropped %s from %s since receiving buffer is full", m.Type, types.ID(m.From))
}
}
}
}
}
// TestStreamWriterAttachOutgoingConn tests that outgoingConn can be attached
// to streamWriter. After that, streamWriter can use it to send messages
// continuously, and closes it when stopped.
func TestStreamWriterAttachOutgoingConn(t *testing.T) {
sw := startStreamWriter(types.ID(1), newPeerStatus(types.ID(1)), &stats.FollowerStats{}, &fakeRaft{})
// the expected initial state of streamWrite is not working
if _, ok := sw.writec(); ok != false {
t.Errorf("initial working status = %v, want false", ok)
}
// repeatitive tests to ensure it can use latest connection
var wfc *fakeWriteFlushCloser
for i := 0; i < 3; i++ {
prevwfc := wfc
wfc = &fakeWriteFlushCloser{}
sw.attach(&outgoingConn{t: streamTypeMessage, Writer: wfc, Flusher: wfc, Closer: wfc})
testutil.WaitSchedule()
// previous attached connection should be closed
if prevwfc != nil && prevwfc.closed != true {
t.Errorf("#%d: close of previous connection = %v, want true", i, prevwfc.closed)
}
// starts working
if _, ok := sw.writec(); ok != true {
t.Errorf("#%d: working status = %v, want true", i, ok)
}
sw.msgc <- raftpb.Message{}
testutil.WaitSchedule()
// still working
if _, ok := sw.writec(); ok != true {
t.Errorf("#%d: working status = %v, want true", i, ok)
}
if wfc.written == 0 {
t.Errorf("#%d: failed to write to the underlying connection", i)
}
}
sw.stop()
// no longer in working status now
if _, ok := sw.writec(); ok != false {
t.Errorf("working status after stop = %v, want false", ok)
}
if wfc.closed != true {
t.Errorf("failed to close the underlying connection")
}
}
func TestSendMessage(t *testing.T) {
// member 1
tr := &Transport{
ID: types.ID(1),
ClusterID: types.ID(1),
Raft: &fakeRaft{},
ServerStats: newServerStats(),
LeaderStats: stats.NewLeaderStats("1"),
}
tr.Start()
srv := httptest.NewServer(tr.Handler())
defer srv.Close()
// member 2
recvc := make(chan raftpb.Message, 1)
p := &fakeRaft{recvc: recvc}
tr2 := &Transport{
ID: types.ID(2),
ClusterID: types.ID(1),
Raft: p,
ServerStats: newServerStats(),
LeaderStats: stats.NewLeaderStats("2"),
}
tr2.Start()
srv2 := httptest.NewServer(tr2.Handler())
defer srv2.Close()
tr.AddPeer(types.ID(2), []string{srv2.URL})
defer tr.Stop()
tr2.AddPeer(types.ID(1), []string{srv.URL})
defer tr2.Stop()
if !waitStreamWorking(tr.Get(types.ID(2)).(*peer)) {
t.Fatalf("stream from 1 to 2 is not in work as expected")
}
data := []byte("some data")
tests := []raftpb.Message{
// these messages are set to send to itself, which facilitates testing.
{Type: raftpb.MsgProp, From: 1, To: 2, Entries: []raftpb.Entry{{Data: data}}},
// TODO: send out MsgApp which fits msgapp stream but the term doesn't match
{Type: raftpb.MsgApp, From: 1, To: 2, Term: 1, Index: 3, LogTerm: 0, Entries: []raftpb.Entry{{Index: 4, Term: 1, Data: data}}, Commit: 3},
{Type: raftpb.MsgAppResp, From: 1, To: 2, Term: 1, Index: 3},
{Type: raftpb.MsgVote, From: 1, To: 2, Term: 1, Index: 3, LogTerm: 0},
{Type: raftpb.MsgVoteResp, From: 1, To: 2, Term: 1},
{Type: raftpb.MsgSnap, From: 1, To: 2, Term: 1, Snapshot: raftpb.Snapshot{Metadata: raftpb.SnapshotMetadata{Index: 1000, Term: 1}, Data: data}},
{Type: raftpb.MsgHeartbeat, From: 1, To: 2, Term: 1, Commit: 3},
{Type: raftpb.MsgHeartbeatResp, From: 1, To: 2, Term: 1},
}
for i, tt := range tests {
tr.Send([]raftpb.Message{tt})
msg := <-recvc
if !reflect.DeepEqual(msg, tt) {
t.Errorf("#%d: msg = %+v, want %+v", i, msg, tt)
}
}
}
func TestPipelinePostErrorc(t *testing.T) {
tests := []struct {
u string
code int
err error
}{
{"http://localhost:2380", http.StatusForbidden, nil},
}
for i, tt := range tests {
picker := mustNewURLPicker(t, []string{tt.u})
errorc := make(chan error, 1)
p := newPipeline(newRespRoundTripper(tt.code, tt.err), picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, errorc)
p.post([]byte("some data"))
p.stop()
select {
case <-errorc:
default:
t.Fatalf("#%d: cannot receive from errorc", i)
}
}
}
// TestStreamReaderDialDetectUnsupport tests that dial func could find
// out that the stream type is not supported by the remote.
func TestStreamReaderDialDetectUnsupport(t *testing.T) {
for i, typ := range []streamType{streamTypeMsgAppV2, streamTypeMessage} {
// the response from etcd 2.0
tr := &respRoundTripper{
code: http.StatusNotFound,
header: http.Header{},
}
sr := &streamReader{
tr: tr,
picker: mustNewURLPicker(t, []string{"http://localhost:2380"}),
local: types.ID(1),
remote: types.ID(2),
cid: types.ID(1),
}
_, err := sr.dial(typ)
if err != errUnsupportedStreamType {
t.Errorf("#%d: error = %v, want %v", i, err, errUnsupportedStreamType)
}
}
}
// TestStreamReaderDialResult tests the result of the dial func call meets the
// HTTP response received.
func TestStreamReaderDialResult(t *testing.T) {
tests := []struct {
code int
err error
wok bool
whalt bool
}{
{0, errors.New("blah"), false, false},
{http.StatusOK, nil, true, false},
{http.StatusMethodNotAllowed, nil, false, false},
{http.StatusNotFound, nil, false, false},
{http.StatusPreconditionFailed, nil, false, false},
{http.StatusGone, nil, false, true},
}
for i, tt := range tests {
h := http.Header{}
h.Add("X-Server-Version", version.Version)
tr := &respRoundTripper{
code: tt.code,
header: h,
err: tt.err,
}
sr := &streamReader{
tr: tr,
picker: mustNewURLPicker(t, []string{"http://localhost:2380"}),
local: types.ID(1),
remote: types.ID(2),
cid: types.ID(1),
errorc: make(chan error, 1),
}
_, err := sr.dial(streamTypeMessage)
if ok := err == nil; ok != tt.wok {
t.Errorf("#%d: ok = %v, want %v", i, ok, tt.wok)
}
if halt := len(sr.errorc) > 0; halt != tt.whalt {
t.Errorf("#%d: halt = %v, want %v", i, halt, tt.whalt)
}
}
}
func TestPipelineExceedMaximumServing(t *testing.T) {
tr := newRoundTripperBlocker()
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
p := newPipeline(tr, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
// keep the sender busy and make the buffer full
// nothing can go out as we block the sender
testutil.WaitSchedule()
for i := 0; i < connPerPipeline+pipelineBufSize; i++ {
select {
case p.msgc <- raftpb.Message{}:
default:
t.Errorf("failed to send out message")
}
// force the sender to grab data
testutil.WaitSchedule()
}
// try to send a data when we are sure the buffer is full
select {
case p.msgc <- raftpb.Message{}:
t.Errorf("unexpected message sendout")
default:
}
// unblock the senders and force them to send out the data
tr.unblock()
testutil.WaitSchedule()
// It could send new data after previous ones succeed
select {
case p.msgc <- raftpb.Message{}:
default:
t.Errorf("failed to send out message")
}
p.stop()
}
// TestSendMessageWhenStreamIsBroken tests that message can be sent to the
// remote in a limited time when all underlying connections are broken.
func TestSendMessageWhenStreamIsBroken(t *testing.T) {
// member 1
tr := &Transport{
ID: types.ID(1),
ClusterID: types.ID(1),
Raft: &fakeRaft{},
ServerStats: newServerStats(),
LeaderStats: stats.NewLeaderStats("1"),
}
tr.Start()
srv := httptest.NewServer(tr.Handler())
defer srv.Close()
// member 2
recvc := make(chan raftpb.Message, 1)
p := &fakeRaft{recvc: recvc}
tr2 := &Transport{
ID: types.ID(2),
ClusterID: types.ID(1),
Raft: p,
ServerStats: newServerStats(),
LeaderStats: stats.NewLeaderStats("2"),
}
tr2.Start()
srv2 := httptest.NewServer(tr2.Handler())
defer srv2.Close()
tr.AddPeer(types.ID(2), []string{srv2.URL})
defer tr.Stop()
tr2.AddPeer(types.ID(1), []string{srv.URL})
defer tr2.Stop()
if !waitStreamWorking(tr.Get(types.ID(2)).(*peer)) {
t.Fatalf("stream from 1 to 2 is not in work as expected")
}
// break the stream
srv.CloseClientConnections()
srv2.CloseClientConnections()
var n int
for {
select {
// TODO: remove this resend logic when we add retry logic into the code
case <-time.After(time.Millisecond):
n++
tr.Send([]raftpb.Message{{Type: raftpb.MsgHeartbeat, From: 1, To: 2, Term: 1, Commit: 3}})
case <-recvc:
if n > 10 {
t.Errorf("disconnection time = %dms, want < 10ms", n)
}
return
}
}
}
func TestPipelinePostBad(t *testing.T) {
tests := []struct {
u string
code int
err error
}{
// RoundTrip returns error
{"http://localhost:2380", 0, errors.New("blah")},
// unexpected response status code
{"http://localhost:2380", http.StatusOK, nil},
{"http://localhost:2380", http.StatusCreated, nil},
}
for i, tt := range tests {
picker := mustNewURLPicker(t, []string{tt.u})
p := newPipeline(newRespRoundTripper(tt.code, tt.err), picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, make(chan error))
err := p.post([]byte("some data"))
p.stop()
if err == nil {
t.Errorf("#%d: err = nil, want not nil", i)
}
}
}
// TestTransportSend tests that transport can send messages using correct
// underlying peer, and drop local or unknown-target messages.
func TestTransportSend(t *testing.T) {
ss := &stats.ServerStats{}
ss.Initialize()
peer1 := newFakePeer()
peer2 := newFakePeer()
tr := &Transport{
ServerStats: ss,
peers: map[types.ID]Peer{types.ID(1): peer1, types.ID(2): peer2},
}
wmsgsIgnored := []raftpb.Message{
// bad local message
{Type: raftpb.MsgBeat},
// bad remote message
{Type: raftpb.MsgProp, To: 3},
}
wmsgsTo1 := []raftpb.Message{
// good message
{Type: raftpb.MsgProp, To: 1},
{Type: raftpb.MsgApp, To: 1},
}
wmsgsTo2 := []raftpb.Message{
// good message
{Type: raftpb.MsgProp, To: 2},
{Type: raftpb.MsgApp, To: 2},
}
tr.Send(wmsgsIgnored)
tr.Send(wmsgsTo1)
tr.Send(wmsgsTo2)
if !reflect.DeepEqual(peer1.msgs, wmsgsTo1) {
t.Errorf("msgs to peer 1 = %+v, want %+v", peer1.msgs, wmsgsTo1)
}
if !reflect.DeepEqual(peer2.msgs, wmsgsTo2) {
t.Errorf("msgs to peer 2 = %+v, want %+v", peer2.msgs, wmsgsTo2)
}
}
// createConfigChangeEnts creates a series of Raft entries (i.e.
// EntryConfChange) to remove the set of given IDs from the cluster. The ID
// `self` is _not_ removed, even if present in the set.
// If `self` is not inside the given ids, it creates a Raft entry to add a
// default member with the given `self`.
func createConfigChangeEnts(ids []uint64, self uint64, term, index uint64) []raftpb.Entry {
ents := make([]raftpb.Entry, 0)
next := index + 1
found := false
for _, id := range ids {
if id == self {
found = true
continue
}
cc := &raftpb.ConfChange{
Type: raftpb.ConfChangeRemoveNode,
NodeID: id,
}
e := raftpb.Entry{
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(cc),
Term: term,
Index: next,
}
ents = append(ents, e)
next++
}
if !found {
m := Member{
ID: types.ID(self),
RaftAttributes: RaftAttributes{PeerURLs: []string{"http://localhost:7001", "http://localhost:2380"}},
}
ctx, err := json.Marshal(m)
if err != nil {
plog.Panicf("marshal member should never fail: %v", err)
}
cc := &raftpb.ConfChange{
Type: raftpb.ConfChangeAddNode,
NodeID: self,
Context: ctx,
}
e := raftpb.Entry{
Type: raftpb.EntryConfChange,
Data: pbutil.MustMarshal(cc),
Term: term,
Index: next,
}
ents = append(ents, e)
}
return ents
}
// NewMember creates a Member without an ID and generates one based on the
// name, peer URLs. This is used for bootstrapping/adding new member.
func NewMember(name string, peerURLs types.URLs, clusterName string, now *time.Time) *Member {
m := &Member{
RaftAttributes: RaftAttributes{PeerURLs: peerURLs.StringSlice()},
Attributes: Attributes{Name: name},
}
var b []byte
sort.Strings(m.PeerURLs)
for _, p := range m.PeerURLs {
b = append(b, []byte(p)...)
}
b = append(b, []byte(clusterName)...)
if now != nil {
b = append(b, []byte(fmt.Sprintf("%d", now.Unix()))...)
}
hash := sha1.Sum(b)
m.ID = types.ID(binary.BigEndian.Uint64(hash[:8]))
return m
}