EventEmitter
example:
package main
import (
"fmt"
"github.com/alphaqiu/EventEmitter/event"
"sync"
"time"
)
const (
fireEvent event.EventType = "fire"
)
func main() {
emitter := event.NewEmitter(2)
c := make(chan string, 1)
go func() {
identity, listener := emitter.Subscribe(fireEvent)
if listener == nil {
return
}
c <- identity
for event := range listener {
fmt.Printf("device 1: %s\n", event.GetData())
}
}()
go func() {
emitter.On(fireEvent, doEvent())
}()
go func() {
_, listener := emitter.Once(fireEvent)
if listener == nil {
return
}
for event := range listener {
fmt.Printf("device 2: %s\n", event.GetData())
}
}()
times := 10
counter := 0
var wg sync.WaitGroup
wg.Add(times)
go func() {
time.Sleep(time.Second)
for {
if counter >= times {
break
}
if counter == 5 {
emitter.UnSubscribe(<-c)
}
time.Sleep(2 * time.Millisecond)
event := event.GenericEvent{
EventType: fireEvent,
Data: []byte(fmt.Sprintf("fire in the hole %d", counter)),
}
emitter.Emit(event)
counter += 1
wg.Done()
}
}()
wg.Wait()
time.Sleep(5 * time.Second)
}
func doEvent() event.Callback {
ch := make(chan event.Event)
go func() {
for e := range ch {
fmt.Printf("device 3: %s\n", e.GetData())
}
}()
return func(event event.Event){
ch <- event
}
}