ducky/devices
2015-12-19
Parent:a700ede02f91
ducky/devices/vendor/github.com/pborman/uuid/version4.go
Fix JSON pointers in errors when creating devices. Our JSON pointers used to point at the root of the document, but the properties were actually in objects in an array keyed off of "devices", so we had to update the field property of our errors to match. While we were in there, we fixed the "insufficient" error for a Device's name to be "missing" when the name is an empty string. So far, the only way for a Device's name for it to be insufficient is _for it to be the empty string_, but if in the future we raise the minimum length of the Device name, there will be a distinction and I'd like the code to recognise it.
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 // Random returns a Random (Version 4) UUID or panics.
8 //
9 // The strength of the UUIDs is based on the strength of the crypto/rand
10 // package.
11 //
12 // A note about uniqueness derived from from the UUID Wikipedia entry:
13 //
14 // Randomly generated UUIDs have 122 random bits. One's annual risk of being
15 // hit by a meteorite is estimated to be one chance in 17 billion, that
16 // means the probability is about 0.00000000006 (6 × 10−11),
17 // equivalent to the odds of creating a few tens of trillions of UUIDs in a
18 // year and having one duplicate.
19 func NewRandom() UUID {
20 uuid := make([]byte, 16)
21 randomBits([]byte(uuid))
22 uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
23 uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
24 return uuid
25 }