ducky/devices
2015-11-29
Parent:b6494e1a499e
ducky/devices/vendor/code.google.com/p/go-uuid/uuid/hash.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.
| 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 "crypto/md5" |
| paddy@0 | 9 "crypto/sha1" |
| paddy@0 | 10 "hash" |
| paddy@0 | 11 ) |
| paddy@0 | 12 |
| paddy@0 | 13 // Well known Name Space IDs and UUIDs |
| paddy@0 | 14 var ( |
| paddy@0 | 15 NameSpace_DNS = Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8") |
| paddy@0 | 16 NameSpace_URL = Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8") |
| paddy@0 | 17 NameSpace_OID = Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8") |
| paddy@0 | 18 NameSpace_X500 = Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8") |
| paddy@0 | 19 NIL = Parse("00000000-0000-0000-0000-000000000000") |
| paddy@0 | 20 ) |
| paddy@0 | 21 |
| paddy@0 | 22 // NewHash returns a new UUID dervied from the hash of space concatenated with |
| paddy@0 | 23 // data generated by h. The hash should be at least 16 byte in length. The |
| paddy@0 | 24 // first 16 bytes of the hash are used to form the UUID. The version of the |
| paddy@0 | 25 // UUID will be the lower 4 bits of version. NewHash is used to implement |
| paddy@0 | 26 // NewMD5 and NewSHA1. |
| paddy@0 | 27 func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID { |
| paddy@0 | 28 h.Reset() |
| paddy@0 | 29 h.Write(space) |
| paddy@0 | 30 h.Write([]byte(data)) |
| paddy@0 | 31 s := h.Sum(nil) |
| paddy@0 | 32 uuid := make([]byte, 16) |
| paddy@0 | 33 copy(uuid, s) |
| paddy@0 | 34 uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4) |
| paddy@0 | 35 uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant |
| paddy@0 | 36 return uuid |
| paddy@0 | 37 } |
| paddy@0 | 38 |
| paddy@0 | 39 // NewMD5 returns a new MD5 (Version 3) UUID based on the |
| paddy@0 | 40 // supplied name space and data. |
| paddy@0 | 41 // |
| paddy@0 | 42 // NewHash(md5.New(), space, data, 3) |
| paddy@0 | 43 func NewMD5(space UUID, data []byte) UUID { |
| paddy@0 | 44 return NewHash(md5.New(), space, data, 3) |
| paddy@0 | 45 } |
| paddy@0 | 46 |
| paddy@0 | 47 // NewSHA1 returns a new SHA1 (Version 5) UUID based on the |
| paddy@0 | 48 // supplied name space and data. |
| paddy@0 | 49 // |
| paddy@0 | 50 // NewHash(sha1.New(), space, data, 5) |
| paddy@0 | 51 func NewSHA1(space UUID, data []byte) UUID { |
| paddy@0 | 52 return NewHash(sha1.New(), space, data, 5) |
| paddy@0 | 53 } |