kubernetes/cmd/kube-controller-manager/app/plugins.go

// ProbeAttachableVolumePlugins collects all volume plugins for the attach/
// detach controller.
// The list of plugins is manually compiled. This code and the plugin
// initialization code for kubelet really, really need a through refactor.
func ProbeAttachableVolumePlugins(logger klog.Logger) ([]volume.VolumePlugin, error) { … }

// GetDynamicPluginProber gets the probers of dynamically discoverable plugins
// for the attach/detach controller.
// Currently only Flexvolume plugins are dynamically discoverable.
func GetDynamicPluginProber(config persistentvolumeconfig.VolumeConfiguration) volume.DynamicPluginProber { … }

// ProbeExpandableVolumePlugins returns volume plugins which are expandable
func ProbeExpandableVolumePlugins(logger klog.Logger, config persistentvolumeconfig.VolumeConfiguration) ([]volume.VolumePlugin, error) { … }

// ProbeControllerVolumePlugins collects all persistent volume plugins into an
// easy to use list. Only volume plugins that implement any of
// provisioner/recycler/deleter interface should be returned.
func ProbeControllerVolumePlugins(logger klog.Logger, config persistentvolumeconfig.VolumeConfiguration) ([]volume.VolumePlugin, error) { … }

// AttemptToLoadRecycler tries decoding a pod from a filepath for use as a recycler for a volume.
// If successful, this method will set the recycler on the config.
// If unsuccessful, an error is returned. Function is exported for reuse downstream.
func AttemptToLoadRecycler(path string, config *volume.VolumeConfig) error { … }