forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
results.go
438 lines (376 loc) · 12.6 KB
/
results.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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
package objects
import (
"fmt"
"io"
"io/ioutil"
"strconv"
"strings"
"time"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
"github.com/mitchellh/mapstructure"
)
// Object is a structure that holds information related to a storage object.
type Object struct {
// Bytes is the total number of bytes that comprise the object.
Bytes int64 `json:"bytes" mapstructure:"bytes"`
// ContentType is the content type of the object.
ContentType string `json:"content_type" mapstructure:"content_type"`
// Hash represents the MD5 checksum value of the object's content.
Hash string `json:"hash" mapstructure:"hash"`
// LastModified is the RFC3339Milli time the object was last modified, represented
// as a string. For any given object (obj), this value may be parsed to a time.Time:
// lastModified, err := time.Parse(gophercloud.RFC3339Milli, obj.LastModified)
LastModified string `json:"last_modified" mapstructure:"last_modified"`
// Name is the unique name for the object.
Name string `json:"name" mapstructure:"name"`
}
// ObjectPage is a single page of objects that is returned from a call to the
// List function.
type ObjectPage struct {
pagination.MarkerPageBase
}
// IsEmpty returns true if a ListResult contains no object names.
func (r ObjectPage) IsEmpty() (bool, error) {
names, err := ExtractNames(r)
if err != nil {
return true, err
}
return len(names) == 0, nil
}
// LastMarker returns the last object name in a ListResult.
func (r ObjectPage) LastMarker() (string, error) {
names, err := ExtractNames(r)
if err != nil {
return "", err
}
if len(names) == 0 {
return "", nil
}
return names[len(names)-1], nil
}
// ExtractInfo is a function that takes a page of objects and returns their full information.
func ExtractInfo(page pagination.Page) ([]Object, error) {
untyped := page.(ObjectPage).Body.([]interface{})
results := make([]Object, len(untyped))
for index, each := range untyped {
object := each.(map[string]interface{})
err := mapstructure.Decode(object, &results[index])
if err != nil {
return results, err
}
}
return results, nil
}
// ExtractNames is a function that takes a page of objects and returns only their names.
func ExtractNames(page pagination.Page) ([]string, error) {
casted := page.(ObjectPage)
ct := casted.Header.Get("Content-Type")
switch {
case strings.HasPrefix(ct, "application/json"):
parsed, err := ExtractInfo(page)
if err != nil {
return nil, err
}
names := make([]string, 0, len(parsed))
for _, object := range parsed {
names = append(names, object.Name)
}
return names, nil
case strings.HasPrefix(ct, "text/plain"):
names := make([]string, 0, 50)
body := string(page.(ObjectPage).Body.([]uint8))
for _, name := range strings.Split(body, "\n") {
if len(name) > 0 {
names = append(names, name)
}
}
return names, nil
case strings.HasPrefix(ct, "text/html"):
return []string{}, nil
default:
return nil, fmt.Errorf("Cannot extract names from response with content-type: [%s]", ct)
}
}
// DownloadHeader represents the headers returned in the response from a Download request.
type DownloadHeader struct {
AcceptRanges string `mapstructure:"Accept-Ranges"`
ContentDisposition string `mapstructure:"Content-Disposition"`
ContentEncoding string `mapstructure:"Content-Encoding"`
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
Date time.Time `mapstructure:"-"`
DeleteAt time.Time `mapstructure:"-"`
ETag string `mapstructure:"Etag"`
LastModified time.Time `mapstructure:"-"`
ObjectManifest string `mapstructure:"X-Object-Manifest"`
StaticLargeObject bool `mapstructure:"X-Static-Large-Object"`
TransID string `mapstructure:"X-Trans-Id"`
}
// DownloadResult is a *http.Response that is returned from a call to the Download function.
type DownloadResult struct {
gophercloud.HeaderResult
Body io.ReadCloser
}
// Extract will return a struct of headers returned from a call to Download. To obtain
// a map of headers, call the ExtractHeader method on the DownloadResult.
func (dr DownloadResult) Extract() (DownloadHeader, error) {
var dh DownloadHeader
if dr.Err != nil {
return dh, dr.Err
}
if err := gophercloud.DecodeHeader(dr.Header, &dh); err != nil {
return dh, err
}
if date, ok := dr.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, date[0])
if err != nil {
return dh, err
}
dh.Date = t
}
if date, ok := dr.Header["Last-Modified"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, date[0])
if err != nil {
return dh, err
}
dh.LastModified = t
}
if date, ok := dr.Header["X-Delete-At"]; ok && len(date) > 0 {
unix, err := strconv.ParseInt(date[0], 10, 64)
if err != nil {
return dh, err
}
dh.DeleteAt = time.Unix(unix, 0)
}
return dh, nil
}
// ExtractContent is a function that takes a DownloadResult's io.Reader body
// and reads all available data into a slice of bytes. Please be aware that due
// the nature of io.Reader is forward-only - meaning that it can only be read
// once and not rewound. You can recreate a reader from the output of this
// function by using bytes.NewReader(downloadBytes)
func (dr DownloadResult) ExtractContent() ([]byte, error) {
if dr.Err != nil {
return nil, dr.Err
}
body, err := ioutil.ReadAll(dr.Body)
if err != nil {
return nil, err
}
dr.Body.Close()
return body, nil
}
// GetHeader represents the headers returned in the response from a Get request.
type GetHeader struct {
ContentDisposition string `mapstructure:"Content-Disposition"`
ContentEncoding string `mapstructure:"Content-Encoding"`
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
Date time.Time `mapstructure:"-"`
DeleteAt time.Time `mapstructure:"-"`
ETag string `mapstructure:"Etag"`
LastModified time.Time `mapstructure:"-"`
ObjectManifest string `mapstructure:"X-Object-Manifest"`
StaticLargeObject bool `mapstructure:"X-Static-Large-Object"`
TransID string `mapstructure:"X-Trans-Id"`
}
// GetResult is a *http.Response that is returned from a call to the Get function.
type GetResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Get. To obtain
// a map of headers, call the ExtractHeader method on the GetResult.
func (gr GetResult) Extract() (GetHeader, error) {
var gh GetHeader
if gr.Err != nil {
return gh, gr.Err
}
if err := gophercloud.DecodeHeader(gr.Header, &gh); err != nil {
return gh, err
}
if date, ok := gr.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, gr.Header["Date"][0])
if err != nil {
return gh, err
}
gh.Date = t
}
if date, ok := gr.Header["Last-Modified"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, gr.Header["Last-Modified"][0])
if err != nil {
return gh, err
}
gh.LastModified = t
}
if date, ok := gr.Header["X-Delete-At"]; ok && len(date) > 0 {
unix, err := strconv.ParseInt(date[0], 10, 64)
if err != nil {
return gh, err
}
gh.DeleteAt = time.Unix(unix, 0)
}
return gh, nil
}
// ExtractMetadata is a function that takes a GetResult (of type *http.Response)
// and returns the custom metadata associated with the object.
func (gr GetResult) ExtractMetadata() (map[string]string, error) {
if gr.Err != nil {
return nil, gr.Err
}
metadata := make(map[string]string)
for k, v := range gr.Header {
if strings.HasPrefix(k, "X-Object-Meta-") {
key := strings.TrimPrefix(k, "X-Object-Meta-")
metadata[key] = v[0]
}
}
return metadata, nil
}
// CreateHeader represents the headers returned in the response from a Create request.
type CreateHeader struct {
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
Date time.Time `mapstructure:"-"`
ETag string `mapstructure:"Etag"`
LastModified time.Time `mapstructure:"-"`
TransID string `mapstructure:"X-Trans-Id"`
}
// CreateResult represents the result of a create operation.
type CreateResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Create. To obtain
// a map of headers, call the ExtractHeader method on the CreateResult.
func (cr CreateResult) Extract() (CreateHeader, error) {
var ch CreateHeader
if cr.Err != nil {
return ch, cr.Err
}
if err := gophercloud.DecodeHeader(cr.Header, &ch); err != nil {
return ch, err
}
if date, ok := cr.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, cr.Header["Date"][0])
if err != nil {
return ch, err
}
ch.Date = t
}
if date, ok := cr.Header["Last-Modified"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, cr.Header["Last-Modified"][0])
if err != nil {
return ch, err
}
ch.LastModified = t
}
return ch, nil
}
// UpdateHeader represents the headers returned in the response from a Update request.
type UpdateHeader struct {
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
Date time.Time `mapstructure:"-"`
TransID string `mapstructure:"X-Trans-Id"`
}
// UpdateResult represents the result of an update operation.
type UpdateResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Update. To obtain
// a map of headers, call the ExtractHeader method on the UpdateResult.
func (ur UpdateResult) Extract() (UpdateHeader, error) {
var uh UpdateHeader
if ur.Err != nil {
return uh, ur.Err
}
if err := gophercloud.DecodeHeader(ur.Header, &uh); err != nil {
return uh, err
}
if date, ok := ur.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, ur.Header["Date"][0])
if err != nil {
return uh, err
}
uh.Date = t
}
return uh, nil
}
// DeleteHeader represents the headers returned in the response from a Delete request.
type DeleteHeader struct {
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
Date time.Time `mapstructure:"-"`
TransID string `mapstructure:"X-Trans-Id"`
}
// DeleteResult represents the result of a delete operation.
type DeleteResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Delete. To obtain
// a map of headers, call the ExtractHeader method on the DeleteResult.
func (dr DeleteResult) Extract() (DeleteHeader, error) {
var dh DeleteHeader
if dr.Err != nil {
return dh, dr.Err
}
if err := gophercloud.DecodeHeader(dr.Header, &dh); err != nil {
return dh, err
}
if date, ok := dr.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, dr.Header["Date"][0])
if err != nil {
return dh, err
}
dh.Date = t
}
return dh, nil
}
// CopyHeader represents the headers returned in the response from a Copy request.
type CopyHeader struct {
ContentLength int64 `mapstructure:"Content-Length"`
ContentType string `mapstructure:"Content-Type"`
CopiedFrom string `mapstructure:"X-Copied-From"`
CopiedFromLastModified time.Time `mapstructure:"-"`
Date time.Time `mapstructure:"-"`
ETag string `mapstructure:"Etag"`
LastModified time.Time `mapstructure:"-"`
TransID string `mapstructure:"X-Trans-Id"`
}
// CopyResult represents the result of a copy operation.
type CopyResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Copy. To obtain
// a map of headers, call the ExtractHeader method on the CopyResult.
func (cr CopyResult) Extract() (CopyHeader, error) {
var ch CopyHeader
if cr.Err != nil {
return ch, cr.Err
}
if err := gophercloud.DecodeHeader(cr.Header, &ch); err != nil {
return ch, err
}
if date, ok := cr.Header["Date"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, cr.Header["Date"][0])
if err != nil {
return ch, err
}
ch.Date = t
}
if date, ok := cr.Header["Last-Modified"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, cr.Header["Last-Modified"][0])
if err != nil {
return ch, err
}
ch.LastModified = t
}
if date, ok := cr.Header["X-Copied-From-Last-Modified"]; ok && len(date) > 0 {
t, err := time.Parse(time.RFC1123, cr.Header["X-Copied-From-Last-Modified"][0])
if err != nil {
return ch, err
}
ch.CopiedFromLastModified = t
}
return ch, nil
}