code: func (eventHandler *ConfigCenterEventHandler) OnReceive(sourceConfig map[string]interface{}) {
  
  	events, err := eventHandler.ConfigSource.populateEvents(sourceConfig)
  	if err != nil {
  		openlogging.GetLogger().Error("error in generating event:" + err.Error())
  		return
  	}
  
  	openlogging.GetLogger().Debugf("event On Receive", events)
  	for _, event := range events {
  		eventHandler.Callback.OnEvent(event)
  	}
  
  	return
  }
docs: //OnReceive initializes all necessary components for a configuration center