Get working console websocket implementation and fix race condition

server/events.go

@@ -0,0 +1,46 @@
+package server
+
+type EventListeners map[string][]EventListenerFunction
+
+type EventListenerFunction *func(string)
+
+// Defines all of the possible output events for a server.
+const (
+	ConsoleOutputEvent = "console"
+)
+
+// Adds an event listener for the server instance.
+func (s *Server) AddListener(event string, f EventListenerFunction) {
+	if s.listeners == nil {
+		s.listeners = make(map[string][]EventListenerFunction)
+	}
+
+	if _, ok := s.listeners[event]; ok {
+		s.listeners[event] = append(s.listeners[event], f)
+	} else {
+		s.listeners[event] = []EventListenerFunction{f}
+	}
+}
+
+// Removes the event listener for the server instance.
+func (s *Server) RemoveListener(event string, f EventListenerFunction) {
+	if _, ok := s.listeners[event]; ok {
+		for i := range s.listeners[event] {
+			if s.listeners[event][i] == f {
+				s.listeners[event] = append(s.listeners[event][:i], s.listeners[event][i+1:]...)
+				break
+			}
+		}
+	}
+}
+
+// Emits an event to all of the active listeners for a server.
+func (s *Server) Emit(event string, data string) {
+	if _, ok := s.listeners[event]; ok {
+		for _, handler := range s.listeners[event] {
+			go func (f EventListenerFunction, d string) {
+				(*f)(d)
+			}(handler, data)
+		}
+	}
+}