func (k *KeyManager) updateKey(cluster *api.Cluster) error { return k.store.Update(func(tx store.Tx) error { cluster = store.GetCluster(tx, cluster.ID) if cluster == nil { return nil } cluster.EncryptionKeyLamportClock = k.keyRing.lClock cluster.NetworkBootstrapKeys = k.keyRing.keys return store.UpdateCluster(tx, cluster) }) }