// DecodeToVersion converts a JSON string back into a pointer to an api object.
// Deduces the type based upon the fields added by the MetaInsertionFactory
// technique. The object will be converted, if necessary, into the versioned
// type before being returned. Decode will not decode objects without version
// set unless version is also "".
// a GroupVersion with .IsEmpty() == true is means "use the internal version for
// the object's group"
func (s *Scheme) DecodeToVersion(data []byte, gv unversioned.GroupVersion) (interface{}, error) {
obj, sourceVersion, kind, err := s.DecodeToVersionedObject(data)
if err != nil {
return nil, err
}
// Version and Kind should be blank in memory.
if err := s.SetVersionAndKind("", "", obj); err != nil {
return nil, err
}
sourceGV, err := unversioned.ParseGroupVersion(sourceVersion)
if err != nil {
return nil, err
}
// if the gv is empty, then we want the internal version, but the internal version varies by
// group. We can lookup the group now because we have knowledge of the group
if gv.IsEmpty() {
exists := false
gv, exists = s.InternalVersions[sourceGV.Group]
if !exists {
return nil, fmt.Errorf("no internalVersion specified for %v", gv)
}
}
// Convert if needed.
if gv != sourceGV {
objOut, err := s.NewObject(gv.String(), kind)
if err != nil {
return nil, err
}
flags, meta := s.generateConvertMeta(sourceVersion, gv.String(), obj)
if err := s.converter.Convert(obj, objOut, flags, meta); err != nil {
return nil, err
}
obj = objOut
}
return obj, nil
}
