long poller

poller.go

@@ -7,39 +7,73 @@ import (
 	"log"
 	"sync"
 
+	cm "loafle.com/overflow/agent_api/config_manager"
+	"loafle.com/overflow/agent_api/observer"
+	"loafle.com/overflow/agent_api/observer/messages"
 	pb "loafle.com/overflow/crawler_go/grpc" //temp
 )
 
 const (
 	POLLING_ID       = "OVERFLOW_LONG_POLLING"
 	DEFAULT_INTERVAL = uint64(3)
-	CENTRAL_ADDR     = "127.0.0.1:50052"
 )
 
-type LongPoller struct {
+var (
+	instance *Poller
+	once     sync.Once
+)
+
+type Poller struct {
 	once    sync.Once
 	runStat chan bool
+	gconf   *cm.GlobalConfig
 }
 
-func (p *LongPoller) Start() {
-	p.once.Do(func() {
-		p.startPolling()
+func init() {
+	addObservers()
+}
+
+func GetInstance() *Poller {
+	once.Do(func() {
+		instance = &Poller{}
 	})
+	return instance
 }
 
-func (p *LongPoller) startPolling() {
+func addObservers() {
+	ch := make(chan interface{}, 0)
+	observer.Add(messages.CONFIGMANAGER_LOADED, ch)
+	handleInit(ch)
+}
+
+func handleInit(ch chan interface{}) {
+	ds := GetInstance()
+	go func() {
+		data := <-ch
+		log.Println(data)
+		ds.gconf = data.(cm.ConfigManager).GetGlobalConfig()
+		ds.start()
+		close(ch)
+	}()
+}
+
+func (p *Poller) start() {
+	p.once.Do(func() {
 		cr := &cron.Cron{}
 		p.runStat = cr.Start()
 		cr.AddTask(POLLING_ID, DEFAULT_INTERVAL).Invoke(p.polling, agentIdentifier())
+	})
 }
 
-func (p *LongPoller) Stop() {
+func (p *Poller) Stop() {
 	p.runStat <- false
+	observer.Notify(messages.POLLER_STOPPED, true)
 }
 
-func (p *LongPoller) polling(agentId string) {
+func (p *Poller) polling(agentId string) {
 
-	conn, err := grpc.Dial(CENTRAL_ADDR, grpc.WithInsecure())
+	addr := p.gconf.Central.Address + ":" + string(p.gconf.Central.Port)
+	conn, err := grpc.Dial(addr, grpc.WithInsecure())
 	if err != nil {
 		log.Println(err)
 		return
@@ -59,7 +93,7 @@ func (p *LongPoller) polling(agentId string) {
 	p.dispatchNotify(out)
 }
 
-func (p *LongPoller) dispatchNotify(result interface{}) {
+func (p *Poller) dispatchNotify(result interface{}) {
 	log.Printf("Polling result - %s ", result)
 }
 

poller_test.go

@@ -1,15 +1,21 @@
 package long_poller_go
 
 import (
+	"loafle.com/overflow/agent_api/observer"
+	"loafle.com/overflow/agent_api/observer/messages"
 	"log"
 	"testing"
 	"time"
 )
 
 func TestPolling(t *testing.T) {
-	poller := &LongPoller{}
-	poller.Start()
-
-	log.Println("hihihihihi")
-
+	poller := &Poller{}
+	poller.start()
+}
+
+func TestTotal(t *testing.T) {
+	time.Sleep(time.Second * 5)
+
+	observer.Notify(messages.AGENT_STARTED, "") //CONFIG LOCATION
+	time.Sleep(time.Second * 5)
 }