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raft: add index to entry

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This commit is contained in:
Xiang Li 2014-08-01 21:43:08 -07:00 committed by Yicheng Qin
parent 46eab903e9
commit 54b4f52e48
6 changed files with 24 additions and 28 deletions
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2
etcd/participant.go
View File

@ -201,7 +201,7 @@ func (p *participant) run() int64 {
return stopMode
}
p.apply(node.Next())
_, ents := node.UnstableEnts()
ents := node.UnstableEnts()
p.save(ents, node.UnstableState())
p.send(node.Msgs())
if node.IsRemoved() {

12
raft/log.go
View File

@ -15,9 +15,10 @@ const (
)
type Entry struct {
Type int64
Term int64
Data []byte
Type int64
Term int64
Index int64
Data []byte
}
func (e *Entry) isConfig() bool {
@ -88,11 +89,10 @@ func (l *raftLog) findConflict(from int64, ents []Entry) int64 {
return -1
}
func (l *raftLog) unstableEnts() (int64, []Entry) {
offset := l.unstable
func (l *raftLog) unstableEnts() []Entry {
ents := l.entries(l.unstable)
l.unstable = l.lastIndex() + 1
return offset, ents
return ents
}
func (l *raftLog) lastIndex() int64 {

23
raft/log_test.go
View File

@ -77,7 +77,7 @@ func TestCompactionSideEffects(t *testing.T) {
raftLog := newLog()
for i = 0; i < lastIndex; i++ {
raftLog.append(int64(i), Entry{Term: int64(i + 1)})
raftLog.append(int64(i), Entry{Term: int64(i + 1), Index: int64(i + 1)})
}
raftLog.compact(500)
@ -98,13 +98,13 @@ func TestCompactionSideEffects(t *testing.T) {
}
}
offset, unstableEnts := raftLog.unstableEnts()
if offset != 501 {
t.Errorf("offset(unstableEntries) = %d, want = %d", offset, 500)
}
unstableEnts := raftLog.unstableEnts()
if g := len(unstableEnts); g != 500 {
t.Errorf("len(unstableEntries) = %d, want = %d", g, 500)
}
if unstableEnts[0].Index != 501 {
t.Errorf("Index = %d, want = %d", unstableEnts[0].Index, 501)
}
prev := raftLog.lastIndex()
raftLog.append(raftLog.lastIndex(), Entry{Term: raftLog.lastIndex() + 1})
@ -119,25 +119,21 @@ func TestCompactionSideEffects(t *testing.T) {
}
func TestUnstableEnts(t *testing.T) {
previousEnts := []Entry{{Term: 1}, {Term: 2}}
previousEnts := []Entry{{Term: 1, Index: 1}, {Term: 2, Index: 2}}
tests := []struct {
unstable int64
woffset int64
wents []Entry
wunstable int64
}{
{3, 3, nil, 3},
{1, 1, []Entry{{Term: 1}, {Term: 2}}, 3},
{3, nil, 3},
{1, previousEnts, 3},
}
for i, tt := range tests {
raftLog := newLog()
raftLog.ents = append(raftLog.ents, previousEnts...)
raftLog.unstable = tt.unstable
offset, ents := raftLog.unstableEnts()
if offset != tt.woffset {
t.Errorf("#%d: offset = %d, want = %d", i, offset, tt.woffset)
}
ents := raftLog.unstableEnts()
if !reflect.DeepEqual(ents, tt.wents) {
t.Errorf("#%d: unstableEnts = %+v, want %+v", i, ents, tt.wents)
}
@ -145,7 +141,6 @@ func TestUnstableEnts(t *testing.T) {
t.Errorf("#%d: unstable = %d, want %d", i, g, tt.wunstable)
}
}
}
//TestCompaction ensures that the number of log entreis is correct after compactions.

2
raft/node.go
View File

@ -219,7 +219,7 @@ func (n *Node) UpdateConf(t int64, c *Config) {
// UnstableEnts retuens all the entries that need to be persistent.
// The first return value is offset, and the second one is unstable entries.
func (n *Node) UnstableEnts() (int64, []Entry) {
func (n *Node) UnstableEnts() []Entry {
return n.sm.raftLog.unstableEnts()
}

1
raft/raft.go
View File

@ -301,6 +301,7 @@ func (sm *stateMachine) q() int {
func (sm *stateMachine) appendEntry(e Entry) {
e.Term = sm.term.Get()
e.Index = sm.raftLog.lastIndex() + 1
sm.index.Set(sm.raftLog.append(sm.raftLog.lastIndex(), e))
sm.ins[sm.id].update(sm.raftLog.lastIndex())
sm.maybeCommit()

12
raft/raft_test.go
View File

@ -210,7 +210,7 @@ func TestDuelingCandidates(t *testing.T) {
nt.recover()
nt.send(Message{From: 2, To: 2, Type: msgHup})
wlog := &raftLog{ents: []Entry{{}, Entry{Type: Normal, Data: nil, Term: 1}}, committed: 1}
wlog := &raftLog{ents: []Entry{{}, Entry{Type: Normal, Data: nil, Term: 1, Index: 1}}, committed: 1}
tests := []struct {
sm *stateMachine
state stateType
@ -262,7 +262,7 @@ func TestCandidateConcede(t *testing.T) {
if g := a.term; g != 1 {
t.Errorf("term = %d, want %d", g, 1)
}
wantLog := ltoa(&raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1}, {Term: 1, Data: data}}, committed: 2})
wantLog := ltoa(&raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1, Index: 1}, {Term: 1, Index: 2, Data: data}}, committed: 2})
for i, p := range tt.peers {
if sm, ok := p.(*stateMachine); ok {
l := ltoa(sm.raftLog)
@ -296,8 +296,8 @@ func TestOldMessages(t *testing.T) {
l := &raftLog{
ents: []Entry{
{}, {Type: Normal, Data: nil, Term: 1},
{Type: Normal, Data: nil, Term: 2}, {Type: Normal, Data: nil, Term: 3},
{}, {Type: Normal, Data: nil, Term: 1, Index: 1},
{Type: Normal, Data: nil, Term: 2, Index: 2}, {Type: Normal, Data: nil, Term: 3, Index: 3},
},
committed: 3,
}
@ -351,7 +351,7 @@ func TestProposal(t *testing.T) {
wantLog := newLog()
if tt.success {
wantLog = &raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1}, {Term: 1, Data: data}}, committed: 2}
wantLog = &raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1, Index: 1}, {Term: 1, Index: 2, Data: data}}, committed: 2}
}
base := ltoa(wantLog)
for i, p := range tt.peers {
@ -385,7 +385,7 @@ func TestProposalByProxy(t *testing.T) {
// propose via follower
tt.send(Message{From: 1, To: 1, Type: msgProp, Entries: []Entry{{Data: []byte("somedata")}}})
wantLog := &raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1}, {Term: 1, Data: data}}, committed: 2}
wantLog := &raftLog{ents: []Entry{{}, {Type: Normal, Data: nil, Term: 1, Index: 1}, {Term: 1, Data: data, Index: 2}}, committed: 2}
base := ltoa(wantLog)
for i, p := range tt.peers {
if sm, ok := p.(*stateMachine); ok {