func (ss *SessionStore) Create(conn interface{}, sid string) *Session {
var s Session
s.sid = sid
switch c := conn.(type) {
case *websocket.Conn:
s.proto = WEBSOCK
s.ws = c
case http.ResponseWriter:
s.proto = LPOLL
s.wrt = c
case *ClusterNode:
s.proto = RPC
s.rpcnode = c
default:
s.proto = NONE
}
if s.proto != NONE {
s.subs = make(map[string]*Subscription)
s.send = make(chan []byte, 64) // buffered
s.stop = make(chan []byte, 1) // Buffered by 1 just to make it non-blocking
s.detach = make(chan string, 64) // buffered
}
s.lastTouched = time.Now()
if s.sid == "" {
s.sid = store.GetUidString()
}
ss.rw.Lock()
ss.sessCache[s.sid] = &s
if s.proto == LPOLL {
// Only LP sessions need to be sorted by last active
s.lpTracker = ss.lru.PushFront(&s)
// Remove expired sessions
expire := s.lastTouched.Add(-ss.lifeTime)
for elem := ss.lru.Back(); elem != nil; elem = ss.lru.Back() {
sess := elem.Value.(*Session)
if sess.lastTouched.Before(expire) {
ss.lru.Remove(elem)
delete(ss.sessCache, sess.sid)
globals.cluster.sessionGone(sess)
} else {
break // don't need to traverse further
}
}
}
ss.rw.Unlock()
return &s
}
// Generate random string as a name of the group topic
func genTopicName() string {
return "grp" + store.GetUidString()
}
