ducky/devices

Paddy 2016-01-02 Parent:a700ede02f91

19:51ad0db105c8 Go to Latest

ducky/devices/vendor/github.com/pborman/uuid/version1.go

Update trout to fix routing bug. Update to tip on trout to fix the routing bug that was causing us such issues. See the commit message of trout at 3df515f0cec5 for more details.

History
paddy@0 1 // Copyright 2011 Google Inc. All rights reserved.
paddy@0 2 // Use of this source code is governed by a BSD-style
paddy@0 3 // license that can be found in the LICENSE file.
paddy@0 4
paddy@0 5 package uuid
paddy@0 6
paddy@0 7 import (
paddy@0 8 "encoding/binary"
paddy@0 9 )
paddy@0 10
paddy@0 11 // NewUUID returns a Version 1 UUID based on the current NodeID and clock
paddy@0 12 // sequence, and the current time. If the NodeID has not been set by SetNodeID
paddy@0 13 // or SetNodeInterface then it will be set automatically. If the NodeID cannot
paddy@0 14 // be set NewUUID returns nil. If clock sequence has not been set by
paddy@0 15 // SetClockSequence then it will be set automatically. If GetTime fails to
paddy@0 16 // return the current NewUUID returns nil.
paddy@0 17 func NewUUID() UUID {
paddy@0 18 if nodeID == nil {
paddy@0 19 SetNodeInterface("")
paddy@0 20 }
paddy@0 21
paddy@0 22 now, seq, err := GetTime()
paddy@0 23 if err != nil {
paddy@0 24 return nil
paddy@0 25 }
paddy@0 26
paddy@0 27 uuid := make([]byte, 16)
paddy@0 28
paddy@0 29 time_low := uint32(now & 0xffffffff)
paddy@0 30 time_mid := uint16((now >> 32) & 0xffff)
paddy@0 31 time_hi := uint16((now >> 48) & 0x0fff)
paddy@0 32 time_hi |= 0x1000 // Version 1
paddy@0 33
paddy@0 34 binary.BigEndian.PutUint32(uuid[0:], time_low)
paddy@0 35 binary.BigEndian.PutUint16(uuid[4:], time_mid)
paddy@0 36 binary.BigEndian.PutUint16(uuid[6:], time_hi)
paddy@0 37 binary.BigEndian.PutUint16(uuid[8:], seq)
paddy@0 38 copy(uuid[10:], nodeID)
paddy@0 39
paddy@0 40 return uuid
paddy@0 41 }