etcd/rafthttp/batcher.go
Xiang Li 91bfead9e9 rafthttp: add batcher
After we enable streaming, there will be a large amount of msgAppResp due to high
rate msgApp. We should batch msgAppResp in a meanful way.
2014-11-23 12:05:42 -08:00

42 lines
655 B
Go

package rafthttp
import (
"time"
"github.com/coreos/etcd/raft/raftpb"
)
type Batcher struct {
batchedN int
batchedT time.Time
batchN int
batchD time.Duration
}
func NewBatcher(n int, d time.Duration) *Batcher {
return &Batcher{
batchN: n,
batchD: d,
batchedT: time.Now(),
}
}
func (b *Batcher) ShouldBatch(now time.Time) bool {
b.batchedN++
batchedD := now.Sub(b.batchedT)
if b.batchedN >= b.batchN || batchedD >= b.batchD {
b.Reset(now)
return false
}
return true
}
func (b *Batcher) Reset(t time.Time) {
b.batchedN = 0
b.batchedT = t
}
func canBatch(m raftpb.Message) bool {
return m.Type == raftpb.MsgAppResp
}