//@Mapper(method="GET")
func (c Refresh) Room(user string) Renderer {
subscription := chatroom.Subscribe()
defer subscription.Cancel()
events := subscription.Archive
for i, _ := range events {
if events[i].User == user {
events[i].User = "******"
}
}
return Render(map[string]interface{}{"user": user, "events": events})
}
//@Mapper("/websocket/room/socket", method="WS")
func (c WebSocket) RoomSocket(user string, ws *websocket.Conn) {
// Join the room.
subscription := chatroom.Subscribe()
defer subscription.Cancel()
chatroom.Join(user)
defer chatroom.Leave(user)
// Send down the archive.
for _, event := range subscription.Archive {
if websocket.JSON.Send(ws, &event) != nil {
// They disconnected
return
}
}
// In order to select between websocket messages and subscription events, we
// need to stuff websocket events into a channel.
newMessages := make(chan string)
go func() {
var msg string
for {
err := websocket.Message.Receive(ws, &msg)
if err != nil {
close(newMessages)
return
}
newMessages <- msg
}
}()
// Now listen for new events from either the websocket or the chatroom.
for {
select {
case event := <-subscription.New:
if websocket.JSON.Send(ws, &event) != nil {
// They disconnected.
return
}
case msg, ok := <-newMessages:
// If the channel is closed, they disconnected.
if !ok {
return
}
// Otherwise, say something.
chatroom.Say(user, msg)
}
}
return
}
//@Mapper("/longpolling/room/messages", method="GET")
func (c LongPolling) WaitMessages(lastReceived int) Renderer {
subscription := chatroom.Subscribe()
defer subscription.Cancel()
// See if anything is new in the archive.
var events []chatroom.Event
for _, event := range subscription.Archive {
if event.Timestamp > lastReceived {
events = append(events, event)
}
}
// If we found one, grand.
if len(events) > 0 {
return Render(events)
}
// Else, wait for something new.
event := <-subscription.New
return Render([]chatroom.Event{event})
}
