forked from etcd-io/etcd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
snapshot.go
36 lines (30 loc) · 895 Bytes
/
snapshot.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
package main
import (
"time"
)
// basic conf.
// TODO: find a good policy to do snapshot
type snapshotConf struct {
// Etcd will check if snapshot is need every checkingInterval
checkingInterval time.Duration
// The number of writes when the last snapshot happened
lastWrites uint64
// If the incremental number of writes since the last snapshot
// exceeds the write Threshold, etcd will do a snapshot
writesThr uint64
}
var snapConf *snapshotConf
func newSnapshotConf() *snapshotConf {
// check snapshot every 3 seconds and the threshold is 20K
return &snapshotConf{time.Second * 3, etcdStore.TotalWrites(), 20 * 1000}
}
func monitorSnapshot() {
for {
time.Sleep(snapConf.checkingInterval)
currentWrites := etcdStore.TotalWrites() - snapConf.lastWrites
if currentWrites > snapConf.writesThr {
r.TakeSnapshot()
snapConf.lastWrites = etcdStore.TotalWrites()
}
}
}