Live: update centrifuge and the ChannelHandler api (#28843)

pkg/services/live/pluginHandler.go

@@ -12,21 +12,16 @@ type PluginHandler struct {
 }
 
 // GetHandlerForPath called on init
-func (g *PluginHandler) GetHandlerForPath(path string) (models.ChannelHandler, error) {
-	return g, nil // all dashboards share the same handler
+func (h *PluginHandler) GetHandlerForPath(path string) (models.ChannelHandler, error) {
+	return h, nil // all dashboards share the same handler
 }
 
-// GetChannelOptions called fast and often
-func (g *PluginHandler) GetChannelOptions(id string) centrifuge.ChannelOptions {
-	return centrifuge.ChannelOptions{}
+// OnSubscribe for now allows anyone to subscribe
+func (h *PluginHandler) OnSubscribe(c *centrifuge.Client, e centrifuge.SubscribeEvent) (centrifuge.SubscribeReply, error) {
+	return centrifuge.SubscribeReply{}, nil
 }
 
-// OnSubscribe for now allows anyone to subscribe to any dashboard
-func (g *PluginHandler) OnSubscribe(c *centrifuge.Client, e centrifuge.SubscribeEvent) error {
-	return nil // anyone can subscribe
-}
-
-// AllowBroadcast checks if a message from the websocket can be broadcast on this channel
-func (g *PluginHandler) AllowBroadcast(c *centrifuge.Client, e centrifuge.PublishEvent) error {
-	return nil // broadcast any event
+// OnPublish checks if a message from the websocket can be broadcast on this channel
+func (h *PluginHandler) OnPublish(c *centrifuge.Client, e centrifuge.PublishEvent) (centrifuge.PublishReply, error) {
+	return centrifuge.PublishReply{}, nil // broadcast any event
 }