long poller

.gitignore

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+# Created by .ignore support plugin (hsz.mobi)
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+.glide/
+

poller.go

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+package long_poller_go
+
+import (
+	"fmt"
+	"loafle.com/overflow/cron_go"
+	"sync"
+)
+
+var (
+	POLLING_ID       = "OVERFLOW_LONG_POLLING"
+	DEFAULT_INTERVAL = uint64(3)
+)
+
+type LongPoller struct {
+	once    sync.Once
+	runStat chan bool
+	wg      sync.WaitGroup
+}
+
+func (p *LongPoller) Start() {
+	p.once.Do(func() {
+		p.wg.Add(1)
+		p.startPolling()
+		p.wg.Wait()
+	})
+}
+
+func (p *LongPoller) startPolling() {
+	cr := &cron.Cron{}
+	p.runStat = cr.Start()
+	cr.AddTask(POLLING_ID, DEFAULT_INTERVAL).Invoke(p.poll, "agent0001")
+}
+
+func (p *LongPoller) Stop() {
+	p.runStat <- false
+	p.wg.Done()
+}
+
+func (p *LongPoller) poll(agentId string) {
+	fmt.Printf("%s :: LongPolling\n", agentId)
+}

poller_test.go

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+package long_poller_go
+
+import (
+	"testing"
+)
+
+func TestPolling(t *testing.T) {
+	poller := &LongPoller{}
+	poller.Start()
+}