etcd/rafthttp/batcher.go

73 lines
1.3 KiB
Go

package rafthttp
import (
"time"
"github.com/coreos/etcd/raft/raftpb"
)
var (
emptyMsgProp = raftpb.Message{Type: raftpb.MsgProp}
)
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 && m.Reject == false
}
type ProposalBatcher struct {
*Batcher
raftpb.Message
}
func NewProposalBatcher(n int, d time.Duration) *ProposalBatcher {
return &ProposalBatcher{
Batcher: NewBatcher(n, d),
Message: emptyMsgProp,
}
}
func (b *ProposalBatcher) Batch(m raftpb.Message) {
b.Message.From = m.From
b.Message.To = m.To
b.Message.Entries = append(b.Message.Entries, m.Entries...)
}
func (b *ProposalBatcher) IsEmpty() bool {
return len(b.Message.Entries) == 0
}
func (b *ProposalBatcher) Reset(t time.Time) {
b.Batcher.Reset(t)
b.Message = emptyMsgProp
}