-
Notifications
You must be signed in to change notification settings - Fork 17
/
stats.go
62 lines (52 loc) · 1002 Bytes
/
stats.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
package util
import (
"sync"
"github.com/couchbase/eventing/common"
)
type Stats struct {
stopCh chan struct{}
appendCh chan common.StatsData
data common.StatsData
mu sync.RWMutex
}
func NewStats() *Stats {
instance := &Stats{
stopCh: make(chan struct{}),
appendCh: make(chan common.StatsData),
data: make(common.StatsData),
}
go instance.updater()
return instance
}
func (s *Stats) Close() {
s.stopCh <- struct{}{}
}
func (s *Stats) Append(deltas common.StatsData) {
s.appendCh <- deltas
}
func (s *Stats) Get() common.StatsData {
s.mu.RLock()
defer s.mu.RUnlock()
stats := make(common.StatsData)
for key, value := range s.data {
stats[key] = value
}
return stats
}
func (s *Stats) update(deltas common.StatsData) {
s.mu.Lock()
defer s.mu.Unlock()
for key, value := range deltas {
s.data[key] += value
}
}
func (s *Stats) updater() {
for {
select {
case deltas := <-s.appendCh:
s.update(deltas)
case <-s.stopCh:
return
}
}
}