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rafthttp: remove the newPipeline func

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Using struct to initialize pipeline is better when we have many
fields to file in.
This commit is contained in:
Xiang Li 2016-05-30 16:17:13 -07:00
parent 84e7fa149e
commit efe0ee7e59
4 changed files with 68 additions and 53 deletions
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13
rafthttp/peer.go
View File

@ -120,6 +120,17 @@ type peer struct {
func startPeer(transport *Transport, urls types.URLs, local, to, cid types.ID, r Raft, fs *stats.FollowerStats, errorc chan error) *peer {
status := newPeerStatus(to)
picker := newURLPicker(urls)
pipeline := &pipeline{
to: to,
tr: transport,
picker: picker,
status: status,
followerStats: fs,
raft: r,
errorc: errorc,
}
pipeline.start()
p := &peer{
id: to,
r: r,
@ -127,7 +138,7 @@ func startPeer(transport *Transport, urls types.URLs, local, to, cid types.ID, r
picker: picker,
msgAppV2Writer: startStreamWriter(to, status, fs, r),
writer: startStreamWriter(to, status, fs, r),
pipeline: newPipeline(transport, picker, local, to, cid, status, fs, r, errorc),
pipeline: pipeline,
snapSender: newSnapshotSender(transport, picker, local, to, cid, status, r, errorc),
sendc: make(chan raftpb.Message),
recvc: make(chan raftpb.Message, recvBufSize),

42
rafthttp/pipeline.go
View File

@ -41,15 +41,15 @@ const (
var errStopped = errors.New("stopped")
type pipeline struct {
from, to types.ID
cid types.ID
to types.ID
tr *Transport
picker *urlPicker
status *peerStatus
fs *stats.FollowerStats
r Raft
raft Raft
errorc chan error
// deprecate when we depercate v2 API
followerStats *stats.FollowerStats
msgc chan raftpb.Message
// wait for the handling routines
@ -57,25 +57,13 @@ type pipeline struct {
stopc chan struct{}
}
func newPipeline(tr *Transport, picker *urlPicker, from, to, cid types.ID, status *peerStatus, fs *stats.FollowerStats, r Raft, errorc chan error) *pipeline {
p := &pipeline{
from: from,
to: to,
cid: cid,
tr: tr,
picker: picker,
status: status,
fs: fs,
r: r,
errorc: errorc,
stopc: make(chan struct{}),
msgc: make(chan raftpb.Message, pipelineBufSize),
}
func (p *pipeline) start() {
p.stopc = make(chan struct{})
p.msgc = make(chan raftpb.Message, pipelineBufSize)
p.wg.Add(connPerPipeline)
for i := 0; i < connPerPipeline; i++ {
go p.handle()
}
return p
}
func (p *pipeline) stop() {
@ -96,22 +84,22 @@ func (p *pipeline) handle() {
if err != nil {
p.status.deactivate(failureType{source: pipelineMsg, action: "write"}, err.Error())
if m.Type == raftpb.MsgApp && p.fs != nil {
p.fs.Fail()
if m.Type == raftpb.MsgApp && p.followerStats != nil {
p.followerStats.Fail()
}
p.r.ReportUnreachable(m.To)
p.raft.ReportUnreachable(m.To)
if isMsgSnap(m) {
p.r.ReportSnapshot(m.To, raft.SnapshotFailure)
p.raft.ReportSnapshot(m.To, raft.SnapshotFailure)
}
continue
}
p.status.activate()
if m.Type == raftpb.MsgApp && p.fs != nil {
p.fs.Succ(end.Sub(start))
if m.Type == raftpb.MsgApp && p.followerStats != nil {
p.followerStats.Succ(end.Sub(start))
}
if isMsgSnap(m) {
p.r.ReportSnapshot(m.To, raft.SnapshotFinish)
p.raft.ReportSnapshot(m.To, raft.SnapshotFinish)
}
sentBytes.WithLabelValues(types.ID(m.To).String()).Add(float64(m.Size()))
case <-p.stopc:
@ -124,7 +112,7 @@ func (p *pipeline) handle() {
// error on any failure.
func (p *pipeline) post(data []byte) (err error) {
u := p.picker.pick()
req := createPostRequest(u, RaftPrefix, bytes.NewBuffer(data), "application/protobuf", p.tr.URLs, p.from, p.cid)
req := createPostRequest(u, RaftPrefix, bytes.NewBuffer(data), "application/protobuf", p.tr.URLs, p.tr.ID, p.tr.ClusterID)
done := make(chan struct{}, 1)
cancel := httputil.RequestCanceler(p.tr.pipelineRt, req)

54
rafthttp/pipeline_test.go
View File

@ -36,9 +36,8 @@ import (
func TestPipelineSend(t *testing.T) {
tr := &roundTripperRecorder{}
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
tp := &Transport{pipelineRt: tr}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p := startTestPipeline(tp, picker)
p.msgc <- raftpb.Message{Type: raftpb.MsgApp}
testutil.WaitSchedule()
@ -47,10 +46,8 @@ func TestPipelineSend(t *testing.T) {
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)
if p.followerStats.Counts.Success != 1 {
t.Errorf("success = %d, want 1", p.followerStats.Counts.Success)
}
}
@ -59,9 +56,8 @@ func TestPipelineSend(t *testing.T) {
func TestPipelineKeepSendingWhenPostError(t *testing.T) {
tr := &respRoundTripper{rec: testutil.NewRecorderStream(), err: fmt.Errorf("roundtrip error")}
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
tp := &Transport{pipelineRt: tr}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p := startTestPipeline(tp, picker)
defer p.stop()
for i := 0; i < 50; i++ {
@ -77,9 +73,9 @@ func TestPipelineKeepSendingWhenPostError(t *testing.T) {
func TestPipelineExceedMaximumServing(t *testing.T) {
tr := newRoundTripperBlocker()
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
fs := &stats.FollowerStats{}
tp := &Transport{pipelineRt: tr}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p := startTestPipeline(tp, picker)
defer p.stop()
// keep the sender busy and make the buffer full
// nothing can go out as we block the sender
@ -111,33 +107,29 @@ func TestPipelineExceedMaximumServing(t *testing.T) {
default:
t.Errorf("failed to send out message")
}
p.stop()
}
// 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{}
tp := &Transport{pipelineRt: newRespRoundTripper(0, errors.New("blah"))}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), fs, &fakeRaft{}, nil)
p := startTestPipeline(tp, picker)
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)
if p.followerStats.Counts.Fail != 1 {
t.Errorf("fail = %d, want 1", p.followerStats.Counts.Fail)
}
}
func TestPipelinePost(t *testing.T) {
tr := &roundTripperRecorder{}
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
tp := &Transport{pipelineRt: tr}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, nil)
tp := &Transport{ClusterID: types.ID(1), pipelineRt: tr}
p := startTestPipeline(tp, picker)
if err := p.post([]byte("some data")); err != nil {
t.Fatalf("unexpected post error: %v", err)
}
@ -185,7 +177,7 @@ func TestPipelinePostBad(t *testing.T) {
for i, tt := range tests {
picker := mustNewURLPicker(t, []string{tt.u})
tp := &Transport{pipelineRt: newRespRoundTripper(tt.code, tt.err)}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, make(chan error))
p := startTestPipeline(tp, picker)
err := p.post([]byte("some data"))
p.stop()
@ -205,13 +197,12 @@ func TestPipelinePostErrorc(t *testing.T) {
}
for i, tt := range tests {
picker := mustNewURLPicker(t, []string{tt.u})
errorc := make(chan error, 1)
tp := &Transport{pipelineRt: newRespRoundTripper(tt.code, tt.err)}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, errorc)
p := startTestPipeline(tp, picker)
p.post([]byte("some data"))
p.stop()
select {
case <-errorc:
case <-p.errorc:
default:
t.Fatalf("#%d: cannot receive from errorc", i)
}
@ -221,7 +212,7 @@ func TestPipelinePostErrorc(t *testing.T) {
func TestStopBlockedPipeline(t *testing.T) {
picker := mustNewURLPicker(t, []string{"http://localhost:2380"})
tp := &Transport{pipelineRt: newRoundTripperBlocker()}
p := newPipeline(tp, picker, types.ID(2), types.ID(1), types.ID(1), newPeerStatus(types.ID(1)), nil, &fakeRaft{}, nil)
p := startTestPipeline(tp, picker)
// send many messages that most of them will be blocked in buffer
for i := 0; i < connPerPipeline*10; i++ {
p.msgc <- raftpb.Message{}
@ -307,3 +298,18 @@ type nopReadCloser struct{}
func (n *nopReadCloser) Read(p []byte) (int, error) { return 0, io.EOF }
func (n *nopReadCloser) Close() error { return nil }
func startTestPipeline(tr *Transport, picker *urlPicker) *pipeline {
p := &pipeline{
tr: tr,
picker: picker,
to: types.ID(1),
status: newPeerStatus(types.ID(1)),
raft: &fakeRaft{},
followerStats: &stats.FollowerStats{},
errorc: make(chan error, 1),
}
p.start()
return p
}

12
rafthttp/remote.go
View File

@ -28,10 +28,20 @@ type remote struct {
func startRemote(tr *Transport, urls types.URLs, local, to, cid types.ID, r Raft, errorc chan error) *remote {
picker := newURLPicker(urls)
status := newPeerStatus(to)
pipeline := &pipeline{
to: to,
tr: tr,
picker: picker,
status: status,
raft: r,
errorc: errorc,
}
pipeline.start()
return &remote{
id: to,
status: status,
pipeline: newPipeline(tr, picker, local, to, cid, status, nil, r, errorc),
pipeline: pipeline,
}
}