forked from launchdarkly/go-client
-
Notifications
You must be signed in to change notification settings - Fork 0
/
polling.go
73 lines (62 loc) · 1.27 KB
/
polling.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
68
69
70
71
72
73
package ldclient
import (
"sync"
"time"
)
type pollingProcessor struct {
store FeatureStore
requestor *requestor
config Config
setInitializedOnce sync.Once
isInitialized bool
quit chan bool
}
func newPollingProcessor(config Config, requestor *requestor) updateProcessor {
pp := &pollingProcessor{
store: config.FeatureStore,
requestor: requestor,
config: config,
quit: make(chan bool),
}
return pp
}
func (pp *pollingProcessor) start(ch chan<- bool) {
go func() {
for {
select {
case <-pp.quit:
return
default:
then := time.Now()
err := pp.poll()
if err == nil {
pp.setInitializedOnce.Do(func() {
pp.isInitialized = true
ch <- true
})
}
delta := pp.config.PollInterval - time.Since(then)
if delta > 0 {
time.Sleep(delta)
}
}
}
}()
}
func (pp *pollingProcessor) poll() error {
features, cached, err := pp.requestor.makeAllRequest(true)
if err != nil {
return err
}
// We initialize the store only if the request wasn't cached
if !cached {
return pp.store.Init(features)
}
return nil
}
func (pp *pollingProcessor) close() {
pp.quit <- true
}
func (pp *pollingProcessor) initialized() bool {
return pp.isInitialized
}