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raft: return offset for unstableEnts

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This commit is contained in:
Yicheng Qin 2014-07-25 12:03:03 -07:00
parent 311db876b0
commit e850c644da
3 changed files with 16 additions and 7 deletions
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5
raft/log.go
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@ -84,10 +84,11 @@ func (l *raftLog) findConflict(from int64, ents []Entry) int64 {
return -1
}
func (l *raftLog) unstableEnts() []Entry {
func (l *raftLog) unstableEnts() (int64, []Entry) {
offset := l.unstable
ents := l.entries(l.unstable)
l.unstable = l.lastIndex() + 1
return ents
return offset, ents
}
func (l *raftLog) lastIndex() int64 {

15
raft/log_test.go
View File

@ -98,7 +98,10 @@ func TestCompactionSideEffects(t *testing.T) {
}
}
unstableEnts := raftLog.unstableEnts()
offset, unstableEnts := raftLog.unstableEnts()
if offset != 501 {
t.Errorf("offset(unstableEntries) = %d, want = %d", offset, 500)
}
if g := len(unstableEnts); g != 500 {
t.Errorf("len(unstableEntries) = %d, want = %d", g, 500)
}
@ -119,18 +122,22 @@ func TestUnstableEnts(t *testing.T) {
previousEnts := []Entry{{Term: 1}, {Term: 2}}
tests := []struct {
unstable int64
woffset int64
wents []Entry
wunstable int64
}{
{3, nil, 3},
{1, []Entry{{Term: 1}, {Term: 2}}, 3},
{3, 3, nil, 3},
{1, 1, []Entry{{Term: 1}, {Term: 2}}, 3},
}
for i, tt := range tests {
raftLog := newLog()
raftLog.ents = append(raftLog.ents, previousEnts...)
raftLog.unstable = tt.unstable
ents := raftLog.unstableEnts()
offset, ents := raftLog.unstableEnts()
if offset != tt.woffset {
t.Errorf("#%d: offset = %d, want = %d", i, offset, tt.woffset)
}
if !reflect.DeepEqual(ents, tt.wents) {
t.Errorf("#%d: unstableEnts = %+v, want %+v", i, ents, tt.wents)
}

3
raft/node.go
View File

@ -206,7 +206,8 @@ func (n *Node) UpdateConf(t int64, c *Config) {
}
// UnstableEnts retuens all the entries that need to be persistent.
func (n *Node) UnstableEnts() []Entry {
// The first return value is offset, and the second one is unstable entries.
func (n *Node) UnstableEnts() (int64, []Entry) {
return n.sm.raftLog.unstableEnts()
}