func protoToKey(p *pb.Key) *Key {
keys := make([]*Key, len(p.GetPathElement()))
for i, el := range p.GetPathElement() {
keys[i] = &Key{
namespace: p.GetPartitionId().GetNamespace(),
kind: el.GetKind(),
id: el.GetId(),
name: el.GetName(),
}
}
for i := 0; i < len(keys)-1; i++ {
keys[i+1].parent = keys[i]
}
return keys[len(keys)-1]
}
// protoToKey decodes a protocol buffer representation of a key into an
// equivalent *Key object.
func protoToKey(p *pb.Key) (*Key, error) {
var key *Key
for _, el := range p.GetPathElement() {
key = &Key{
namespace: p.GetPartitionId().GetNamespace(),
kind: el.GetKind(),
id: el.GetId(),
name: el.GetName(),
parent: key,
}
}
if !key.valid() { // Also detects key == nil.
return nil, ErrInvalidKey
}
return key, nil
}