type StorageDriver interface {
AddStats(ref info.ContainerReference, stats *info.ContainerStats) error// Read most recent stats. numStats indicates max number of stats// returned. The returned stats must be consecutive observed stats. If// numStats < 0, then return all stats stored in the storage. The// returned stats should be sorted in time increasing order, i.e. Most// recent stats should be the last.
RecentStats(containerName string, numStats int) ([]*info.ContainerStats, error)
// Close will clear the state of the storage driver. The elements// stored in the underlying storage may or may not be deleted depending// on the implementation of the storage driver.
Close() error
}