ducky/devices
2015-11-29
Parent:b6494e1a499e
ducky/devices/vendor/code.google.com/p/go-uuid/uuid/version1.go
Set up DeleteDevices in Memstore. Implement the DeleteDevices method for our Memstore, removing the Devices specified by the passed IDs. Also, create a simple test that verifies that when Devices are deleted, only the Devices you intend to delete are actually deleted. Further tests should be written to verify that this extends to ListDevicesByOwner (e.g., deleted devices will not be returned when listing them), CreateDevices (e.g., will not result in an ErrDeviceAlreadyExists error), and UpdateDevice (e.g., will return an ErrDeviceNotFound error after the Device is deleted). But for now, we're confident that it works in the simplest possible case.
1 // Copyright 2011 Google Inc. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 package uuid
7 import (
8 "encoding/binary"
9 )
11 // NewUUID returns a Version 1 UUID based on the current NodeID and clock
12 // sequence, and the current time. If the NodeID has not been set by SetNodeID
13 // or SetNodeInterface then it will be set automatically. If the NodeID cannot
14 // be set NewUUID returns nil. If clock sequence has not been set by
15 // SetClockSequence then it will be set automatically. If GetTime fails to
16 // return the current NewUUID returns nil.
17 func NewUUID() UUID {
18 if nodeID == nil {
19 SetNodeInterface("")
20 }
22 now, seq, err := GetTime()
23 if err != nil {
24 return nil
25 }
27 uuid := make([]byte, 16)
29 time_low := uint32(now & 0xffffffff)
30 time_mid := uint16((now >> 32) & 0xffff)
31 time_hi := uint16((now >> 48) & 0x0fff)
32 time_hi |= 0x1000 // Version 1
34 binary.BigEndian.PutUint32(uuid[0:], time_low)
35 binary.BigEndian.PutUint16(uuid[4:], time_mid)
36 binary.BigEndian.PutUint16(uuid[6:], time_hi)
37 binary.BigEndian.PutUint16(uuid[8:], seq)
38 copy(uuid[10:], nodeID)
40 return uuid
41 }