| // Copyright 2011 Google Inc. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package uuid |
| |
| import ( |
| guuid "github.com/google/uuid" |
| ) |
| |
| // NodeInterface returns the name of the interface from which the NodeID was |
| // derived. The interface "user" is returned if the NodeID was set by |
| // SetNodeID. |
| func NodeInterface() string { |
| return guuid.NodeInterface() |
| } |
| |
| // SetNodeInterface selects the hardware address to be used for Version 1 UUIDs. |
| // If name is "" then the first usable interface found will be used or a random |
| // Node ID will be generated. If a named interface cannot be found then false |
| // is returned. |
| // |
| // SetNodeInterface never fails when name is "". |
| func SetNodeInterface(name string) bool { |
| return guuid.SetNodeInterface(name) |
| } |
| |
| // NodeID returns a slice of a copy of the current Node ID, setting the Node ID |
| // if not already set. |
| func NodeID() []byte { |
| return guuid.NodeID() |
| } |
| |
| // SetNodeID sets the Node ID to be used for Version 1 UUIDs. The first 6 bytes |
| // of id are used. If id is less than 6 bytes then false is returned and the |
| // Node ID is not set. |
| func SetNodeID(id []byte) bool { |
| return guuid.SetNodeID(id) |
| } |
| |
| // NodeID returns the 6 byte node id encoded in uuid. It returns nil if uuid is |
| // not valid. The NodeID is only well defined for version 1 and 2 UUIDs. |
| func (uuid UUID) NodeID() []byte { |
| if len(uuid) != 16 { |
| return nil |
| } |
| node := make([]byte, 6) |
| copy(node, uuid[10:]) |
| return node |
| } |