// Create implements storage.Interface.Create.
func (s *store) Create(ctx context.Context, key string, obj, out runtime.Object, ttl uint64) error {
if version, err := s.versioner.ObjectResourceVersion(obj); err == nil && version != 0 {
return errors.New("resourceVersion should not be set on objects to be created")
}
data, err := runtime.Encode(s.codec, obj)
if err != nil {
return err
}
key = keyWithPrefix(s.pathPrefix, key)
opts, err := s.ttlOpts(ctx, int64(ttl))
if err != nil {
return err
}
txnResp, err := s.client.KV.Txn(ctx).If(
notFound(key),
).Then(
clientv3.OpPut(key, string(data), opts...),
).Commit()
if err != nil {
return err
}
if !txnResp.Succeeded {
return storage.NewKeyExistsError(key, 0)
}
if out != nil {
putResp := txnResp.Responses[0].GetResponsePut()
return decode(s.codec, s.versioner, data, out, putResp.Header.Revision)
}
return nil
}
func toStorageErr(err error, key string, rv int64) error {
if err == nil {
return nil
}
switch {
case etcdutil.IsEtcdNotFound(err):
return storage.NewKeyNotFoundError(key, rv)
case etcdutil.IsEtcdNodeExist(err):
return storage.NewKeyExistsError(key, rv)
case etcdutil.IsEtcdTestFailed(err):
return storage.NewResourceVersionConflictsError(key, rv)
case etcdutil.IsEtcdUnreachable(err):
return storage.NewUnreachableError(key, rv)
default:
return err
}
}