forked from Vivena/babelweb2
/
multicastGroup.go
65 lines (54 loc) · 1.29 KB
/
multicastGroup.go
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package ws
import (
"container/list"
"sync"
"github.com/Vivena/babelweb2/parser"
)
//Listener unique channel for each ws
type Listener struct {
Channel chan parser.SBabelUpdate
}
//NewListener function to call if you want a new Listener
func NewListener() *Listener {
l := new(Listener)
l.Channel = make(chan parser.SBabelUpdate)
return l
}
//Listenergroup list of all the Listeners for the multicast
type Listenergroup struct {
sync.Mutex
listeners *list.List
}
//NewListenerGroup function to call if you want a new Listenergroup
func NewListenerGroup() *Listenergroup {
lg := new(Listenergroup)
lg.listeners = list.New()
return lg
}
//Push add a Listener to the Listenergroup
func (g *Listenergroup) Push(newListener *Listener) {
g.Lock()
defer g.Unlock()
g.listeners.PushBack(newListener)
}
//Flush remove a Listener from the Listenergroup
func (g *Listenergroup) Flush(l *Listener) {
g.Lock()
defer g.Unlock()
for i := g.listeners.Front(); i != nil; i = i.Next() {
current := i.Value.(*Listener)
if current == l {
g.listeners.Remove(i)
return
}
}
}
//Iter Call the routine for each Listener
func (g *Listenergroup) Iter(routine func(*Listener)) {
g.Lock()
defer g.Unlock()
for i := g.listeners.Front(); i != nil; i = i.Next() {
l := i.Value.(*Listener)
routine(l)
}
}