ducky/devices
ducky/devices/vendor/code.secondbit.org/uuid.hg/uuid.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 package uuid |
| paddy@0 | 2 |
| paddy@0 | 3 import ( |
| paddy@0 | 4 "database/sql/driver" |
| paddy@0 | 5 "encoding/json" |
| paddy@0 | 6 "encoding/xml" |
| paddy@0 | 7 "errors" |
| paddy@0 | 8 |
| paddy@0 | 9 "code.google.com/p/go-uuid/uuid" |
| paddy@0 | 10 ) |
| paddy@0 | 11 |
| paddy@0 | 12 var InvalidIDError = errors.New("Invalid ID format.") |
| paddy@0 | 13 |
| paddy@0 | 14 type ID uuid.UUID |
| paddy@0 | 15 |
| paddy@0 | 16 func NewID() ID { |
| paddy@0 | 17 return ID(uuid.NewRandom()) |
| paddy@0 | 18 } |
| paddy@0 | 19 |
| paddy@0 | 20 func (id ID) String() string { |
| paddy@0 | 21 return uuid.UUID(id).String() |
| paddy@0 | 22 } |
| paddy@0 | 23 |
| paddy@0 | 24 func (id ID) IsZero() bool { |
| paddy@0 | 25 if id == nil { |
| paddy@0 | 26 return true |
| paddy@0 | 27 } |
| paddy@0 | 28 if len(id) == 0 { |
| paddy@0 | 29 return true |
| paddy@0 | 30 } |
| paddy@0 | 31 return false |
| paddy@0 | 32 } |
| paddy@0 | 33 |
| paddy@0 | 34 func (id ID) Copy() ID { |
| paddy@0 | 35 resp, _ := Parse(id.String()) |
| paddy@0 | 36 // ignore the error because they asked for a copy of the ID, they |
| paddy@0 | 37 // never asked if it was valid or not. |
| paddy@0 | 38 // This is, overall, not the most efficient way to do this (we're |
| paddy@0 | 39 // essentially converting to a string and then back again) but the |
| paddy@0 | 40 // computational complexity involved is pretty minor, and it allows |
| paddy@0 | 41 // us to respect the boundaries between the packages, using only the |
| paddy@0 | 42 // exported interfaces to perform a copy. And that seems pretty |
| paddy@0 | 43 // valuable. |
| paddy@0 | 44 return resp |
| paddy@0 | 45 } |
| paddy@0 | 46 |
| paddy@0 | 47 func (id ID) MarshalJSON() ([]byte, error) { |
| paddy@0 | 48 return json.Marshal(id.String()) |
| paddy@0 | 49 } |
| paddy@0 | 50 |
| paddy@0 | 51 func (id ID) MarshalXML(e *xml.Encoder, start xml.StartElement) error { |
| paddy@0 | 52 return e.EncodeElement(id.String(), start) |
| paddy@0 | 53 } |
| paddy@0 | 54 |
| paddy@0 | 55 func (id ID) Value() (driver.Value, error) { |
| paddy@0 | 56 return id.String(), nil |
| paddy@0 | 57 } |
| paddy@0 | 58 |
| paddy@0 | 59 func (id *ID) Scan(src interface{}) error { |
| paddy@0 | 60 if src == nil { |
| paddy@0 | 61 id = nil |
| paddy@0 | 62 return nil |
| paddy@0 | 63 } |
| paddy@0 | 64 switch src.(type) { |
| paddy@0 | 65 case []byte: |
| paddy@0 | 66 if len(src.([]byte)) == 0 { |
| paddy@0 | 67 *id = (*id)[:0] |
| paddy@0 | 68 return nil |
| paddy@0 | 69 } |
| paddy@0 | 70 newID, err := Parse(string(src.([]byte))) |
| paddy@0 | 71 if err != nil { |
| paddy@0 | 72 return err |
| paddy@0 | 73 } |
| paddy@0 | 74 *id = append((*id)[:0], newID...) |
| paddy@0 | 75 return nil |
| paddy@0 | 76 case string: |
| paddy@0 | 77 if len(src.(string)) == 0 { |
| paddy@0 | 78 *id = (*id)[:0] |
| paddy@0 | 79 return nil |
| paddy@0 | 80 } |
| paddy@0 | 81 newID, err := Parse(src.(string)) |
| paddy@0 | 82 if err != nil { |
| paddy@0 | 83 return err |
| paddy@0 | 84 } |
| paddy@0 | 85 *id = append((*id)[:0], newID...) |
| paddy@0 | 86 return nil |
| paddy@0 | 87 default: |
| paddy@0 | 88 return InvalidIDError |
| paddy@0 | 89 } |
| paddy@0 | 90 return nil |
| paddy@0 | 91 } |
| paddy@0 | 92 |
| paddy@0 | 93 func (id *ID) UnmarshalJSON(in []byte) error { |
| paddy@0 | 94 var tmp string |
| paddy@0 | 95 err := json.Unmarshal(in, &tmp) |
| paddy@0 | 96 if err != nil { |
| paddy@0 | 97 return err |
| paddy@0 | 98 } |
| paddy@0 | 99 newID, err := Parse(tmp) |
| paddy@0 | 100 if err != nil { |
| paddy@0 | 101 return err |
| paddy@0 | 102 } |
| paddy@0 | 103 *id = append((*id)[:0], newID...) |
| paddy@0 | 104 return nil |
| paddy@0 | 105 } |
| paddy@0 | 106 |
| paddy@0 | 107 func (id *ID) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error { |
| paddy@0 | 108 var tmp string |
| paddy@0 | 109 err := d.DecodeElement(&tmp, &start) |
| paddy@0 | 110 if err != nil { |
| paddy@0 | 111 return err |
| paddy@0 | 112 } |
| paddy@0 | 113 newID, err := Parse(tmp) |
| paddy@0 | 114 if err != nil { |
| paddy@0 | 115 return err |
| paddy@0 | 116 } |
| paddy@0 | 117 *id = append((*id)[:0], newID...) |
| paddy@0 | 118 return nil |
| paddy@0 | 119 } |
| paddy@0 | 120 |
| paddy@0 | 121 func Parse(in string) (ID, error) { |
| paddy@0 | 122 id := ID(uuid.Parse(in)) |
| paddy@0 | 123 if id == nil { |
| paddy@0 | 124 return id, InvalidIDError |
| paddy@0 | 125 } |
| paddy@0 | 126 return id, nil |
| paddy@0 | 127 } |
| paddy@0 | 128 |
| paddy@0 | 129 func (id ID) Equal(other ID) bool { |
| paddy@0 | 130 return uuid.Equal(uuid.UUID(id), uuid.UUID(other)) |
| paddy@0 | 131 } |