func getGraphDB(d dvid.Data) (db storage.GraphDB, err error) {
store, err := d.BackendStore()
if err != nil {
return nil, err
}
if store == nil {
return nil, ErrInvalidStore
}
var ok bool
db, ok = store.(storage.GraphDB)
if !ok {
return nil, fmt.Errorf("Store assigned to data %q (%s) is not a graph db", d.DataName(), store)
}
return
}
func getKeyValueBatcher(d dvid.Data) (db storage.KeyValueBatcher, err error) {
store, err := d.BackendStore()
if err != nil {
return nil, err
}
if store == nil {
return nil, ErrInvalidStore
}
var ok bool
db, ok = store.(storage.KeyValueBatcher)
if !ok {
return nil, fmt.Errorf("Store assigned to data %q (%s) is not able to batch key-value ops", d.DataName(), store)
}
return
}
// DeleteDataInstance removes a data instance.
func DeleteDataInstance(data dvid.Data) error {
if !manager.setup {
return fmt.Errorf("Can't delete data instance %q before storage manager is initialized", data.DataName())
}
// Get the store for the data instance.
store, err := data.BackendStore()
if err != nil {
return err
}
db, ok := store.(OrderedKeyValueDB)
if !ok {
return fmt.Errorf("store assigned to data %q is not an ordered kv db with ability to delete all", data.DataName())
}
dvid.Infof("Starting delete of instance %d: name %q, type %s\n", data.InstanceID(), data.DataName(), data.TypeName())
ctx := NewDataContext(data, 0)
if err := db.DeleteAll(ctx, true); err != nil {
return err
}
return nil
}