forked from ha/doozerd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
clean.go
67 lines (58 loc) · 1.13 KB
/
clean.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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
package gc
import (
"doozer/store"
"doozer/util"
"log"
"strings"
"strconv"
)
var applied = store.MustCompileGlob("/doozer/info/*/applied")
type cleaner struct {
st *store.Store
table map[string]int64
logger *log.Logger
}
func Clean(st *store.Store) {
cl := &cleaner{
st: st,
table: make(map[string]int64),
logger: util.NewLogger("clean"),
}
for ev := range st.Watch(applied) {
cl.update(ev)
cl.check()
}
}
func (cl *cleaner) update(ev store.Event) {
parts := strings.Split(ev.Path, "/", -1)
id := parts[3]
seqn, err := strconv.Atoi64(ev.Body)
if err != nil {
cl.logger.Println(err)
return
}
cl.table[id] = seqn
}
func (cl *cleaner) check() {
for _, seqn := range cl.table {
if cl.isOk(seqn) {
cl.st.Clean(seqn)
}
}
}
func (cl *cleaner) isOk(seqn int64) bool {
for _, c := range cl.getCals(seqn) {
if cl.table[c] < seqn {
return false
}
}
return true
}
func (cl *cleaner) getCals(seqn int64) []string {
slots := store.Getdir(cl.st, "/doozer/slot")
cals := make([]string, len(slots))
for i, slot := range slots {
cals[i] = store.GetString(cl.st, "/doozer/slot/"+slot)
}
return cals
}