DefaultConfig                  *proxyConfig                                              `json:"defaultConfig" patchStrategy:"merge"`
	ConfigSources                  []*v1alpha13.ConfigSource                                 `json:"configSources" patchStrategy:"merge" patchMergeKey:"address"`
	TrustDomainAliases             []string                                                  `json:"trustDomainAliases" patchStrategy:"merge"`

	current := w.MeshConfig.Load()
	if !reflect.DeepEqual(meshConfig, current) {
		log.Infof("mesh configuration updated to: %s", PrettyFormatOfMeshConfig(meshConfig))
		if !reflect.DeepEqual(meshConfig.ConfigSources, current.ConfigSources) {
			log.Info("mesh configuration sources have changed")
			// TODO Need to recreate or reload initConfigController()
		}

		w.MeshConfig.Store(meshConfig)

	return nil
}

// initConfigSources will process mesh config 'configSources' and initialize
// associated configs.
func (s *Server) initConfigSources(args *PilotArgs) (err error) {
	for _, configSource := range s.environment.Mesh().ConfigSources {
		srcAddress, err := url.Parse(configSource.Address)
		if err != nil {

			if err != nil {
				return fmt.Errorf("failed reading mesh config: %v", err)
			}
			if len(meshConfig.ConfigSources) == 0 && args.RegistryOptions.KubeConfig != "" {
				hasK8SConfigStore = true
			}
			for _, cs := range meshConfig.ConfigSources {
				if cs.Address == string(Kubernetes)+"://" {
					hasK8SConfigStore = true
					break
				}
			}