type Conflict struct {
	// Human-readable name of the conflicting property + value of "property" label of selinux_volume_conflict metric.
	PropertyName string
	// Reason for the event, to be set as the Event.Reason field.
	EventReason string

	// Pod to generate the event on
	Pod           cache.ObjectName
	PropertyValue string
	// only for logging / messaging
	OtherPod           cache.ObjectName
	OtherPropertyValue string
}

type VolumeCache interface {
	// Add a single volume to the cache. Returns list of conflicts it caused.
	AddVolume(logger klog.Logger, volumeName v1.UniqueVolumeName, podKey cache.ObjectName, seLinuxLabel string, changePolicy v1.PodSELinuxChangePolicy, csiDriver string) []Conflict

	// Remove a pod from the cache. Prunes all empty structures.
	DeletePod(logger klog.Logger, podKey cache.ObjectName)

	// GetPodsForCSIDriver returns all pods that use volumes with the given CSI driver.
	// This is useful when a CSIDrive changes its spec.seLinuxMount and the controller
	// needs to reevaluate all pods that use volumes with this driver.
	// The controller doesn't need to track in-tree volume plugins, because they don't
	// change their SELinux support dynamically.
	GetPodsForCSIDriver(driverName string) []cache.ObjectName

	// SendConflicts sends all current conflicts to the given channel.
	SendConflicts(logger klog.Logger, ch chan<- Conflict)
}