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package driver
import (
cstorage "github.com/containers/storage"
)
// Data handles the data for a storage driver
type Data struct {
Name string `json:"Name"`
Data map[string]string `json:"Data"`
}
// GetDriverName returns the name of the driver for the given store
func GetDriverName(store cstorage.Store) (string, error) {
driver, err := store.GraphDriver()
if err != nil {
return "", err
}
return driver.String(), nil
}
// GetDriverMetadata returns the metadata regarding the driver for the layer in the given store
func GetDriverMetadata(store cstorage.Store, layerID string) (map[string]string, error) {
driver, err := store.GraphDriver()
if err != nil {
return nil, err
}
return driver.Metadata(layerID)
}
// GetDriverData returns the Data struct with information of the driver used by the store
func GetDriverData(store cstorage.Store, layerID string) (*Data, error) {
name, err := GetDriverName(store)
if err != nil {
return nil, err
}
metaData, err := GetDriverMetadata(store, layerID)
if err != nil {
return nil, err
}
if mountTimes, err := store.Mounted(layerID); mountTimes == 0 || err != nil {
delete(metaData, "MergedDir")
}
return &Data{
Name: name,
Data: metaData,
}, nil
}
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