This repository has been archived by the owner on Jul 9, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
cloud.go
180 lines (144 loc) · 4.27 KB
/
cloud.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
package datastore
import (
"reflect"
cds "cloud.google.com/go/datastore"
"golang.org/x/net/context"
)
// NewCloudClient creates a datastore client for use outside of Google App
// Engine.
func NewCloudClient(projectID string) (Client, error) {
ctx := context.Background()
client, err := cds.NewClient(ctx, projectID)
return &cloudClient{context: ctx, client: client}, err
}
type cloudClient struct {
context context.Context
client *cds.Client
}
func getCloudKey(key Key) *cds.Key {
if key == nil {
return nil
}
return key.getInternal().cloud
}
func (c *cloudClient) IDKey(kind string, id int64, parent Key) Key {
return &cloudKey{key: cds.IDKey(kind, id, getCloudKey(parent))}
}
func (c *cloudClient) IncompleteKey(kind string, parent Key) Key {
return &cloudKey{key: cds.IncompleteKey(kind, getCloudKey(parent))}
}
func (c *cloudClient) NameKey(kind, name string, parent Key) Key {
return &cloudKey{key: cds.NameKey(kind, name, getCloudKey(parent))}
}
func (c *cloudClient) AllocateIDs(keys []Key) ([]Key, error) {
k, err := c.client.AllocateIDs(c.context, convertKeyToCloudKey(keys))
if err != nil {
return nil, err
}
return convertCloudKeyToKey(k), nil
}
func (c *cloudClient) Close() error {
return c.client.Close()
}
func (c *cloudClient) Delete(key Key) error {
return c.client.Delete(c.context, getCloudKey(key))
}
func convertKeyToCloudKey(keys []Key) []*cds.Key {
rv := make([]*cds.Key, len(keys))
for i := range keys {
rv[i] = getCloudKey(keys[i])
}
return rv
}
func convertCloudKeyToKey(keys []*cds.Key) []Key {
rv := make([]Key, len(keys))
for i := range keys {
rv[i] = &cloudKey{key: keys[i]}
}
return rv
}
func (c *cloudClient) DeleteMulti(keys []Key) error {
return c.client.DeleteMulti(c.context,
convertKeyToCloudKey(keys))
}
func (c *cloudClient) Get(key Key, dst interface{}) error {
return c.client.Get(c.context, getCloudKey(key), dst)
}
func (c *cloudClient) GetAll(q Query, dst interface{}) ([]Key, error) {
k, err := c.client.GetAll(c.context, q.getInternal().cloud, dst)
if err != nil {
return nil, err
}
return convertCloudKeyToKey(k), nil
}
func (c *cloudClient) GetMulti(keys []Key, dst interface{}) error {
return c.client.GetMulti(c.context, convertKeyToCloudKey(keys), dst)
}
func (c *cloudClient) Put(key Key, src interface{}) (Key, error) {
k, err := c.client.Put(c.context, getCloudKey(key), src)
return &cloudKey{key: k}, err
}
func (c *cloudClient) PutMulti(keys []Key, src interface{}) ([]Key, error) {
k, err := c.client.PutMulti(c.context, convertKeyToCloudKey(keys), src)
if err != nil {
return nil, err
}
return convertCloudKeyToKey(k), nil
}
func (c *cloudClient) NewQuery(kind string) Query {
return &cloudQuery{internal: cds.NewQuery(kind)}
}
func (c *cloudClient) Run(query Query) Iterator {
return &cloudIterator{it: c.client.Run(
c.context, query.getInternal().cloud)}
}
type cloudKey struct {
key *cds.Key
}
func (c *cloudKey) getInternal() internalKey {
return internalKey{cloud: c.key}
}
func (c *cloudKey) GetID() int64 {
return c.key.ID
}
func (c *cloudKey) GetName() string {
return c.key.Name
}
type cloudQuery struct {
internal *cds.Query
}
func (q *cloudQuery) Ancestor(ancestor Key) Query {
return &cloudQuery{internal: q.internal.Ancestor(ancestor.getInternal().cloud)}
}
func (q *cloudQuery) Distinct() Query {
return &cloudQuery{internal: q.internal.Distinct()}
}
func (q *cloudQuery) EventualConsistency() Query {
return &cloudQuery{internal: q.internal.EventualConsistency()}
}
func (q *cloudQuery) Filter(filterStr string, value interface{}) Query {
if reflect.TypeOf(value) == reflect.TypeOf((*Key)(nil)) {
value = value.(Key).getInternal()
}
return &cloudQuery{internal: q.internal.Filter(filterStr,
value)}
}
func (q *cloudQuery) Limit(limit int) Query {
return &cloudQuery{internal: q.internal.Limit(limit)}
}
func (q *cloudQuery) Offset(offset int) Query {
return &cloudQuery{internal: q.internal.Offset(offset)}
}
func (q *cloudQuery) Order(fieldName string) Query {
return &cloudQuery{internal: q.internal.Order(fieldName)}
}
func (q *cloudQuery) getInternal() internalQuery {
return internalQuery{cloud: q.internal}
}
type cloudIterator struct {
it *cds.Iterator
}
func (i *cloudIterator) Next(dst interface{}) (Key, error) {
k, err := i.it.Next(dst)
return &cloudKey{key: k}, err
}