Function DeleteKey

store.go:274–314

Delete a key-value in a Graviton tree

(t string, key []byte)

// Delete a key-value in a Graviton tree
func DeleteKey(t string, key []byte) (err error) {
	if t == "" {
		err = errors.New("error: missing graviton tree input")
		return
	} else if key == nil {
		err = errors.New("error: missing graviton key input")
		return
	}

	shard, err := GetShard()
	if err != nil {
		return
	}

	store, err := graviton.NewDiskStore(shard)
	if err != nil {
		return
	}

	ss, err := store.LoadSnapshot(0)
	if err != nil {
		return
	}

	tree, err := ss.GetTree(t)
	if err != nil {
		return
	}

	err = tree.Delete(key)
	if err != nil {
		return
	}

	_, err = graviton.Commit(tree)
	if err != nil {
		return
	}

	return
}