forked from minio/minio
-
Notifications
You must be signed in to change notification settings - Fork 0
/
fs-multipart.go
562 lines (508 loc) · 16.9 KB
/
fs-multipart.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
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package fs
import (
"bytes"
"crypto/md5"
"encoding/base64"
"encoding/hex"
"encoding/json"
"encoding/xml"
"errors"
"fmt"
"io"
"io/ioutil"
"math/rand"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"time"
"github.com/minio/minio-xl/pkg/atomic"
"github.com/minio/minio-xl/pkg/crypto/sha256"
"github.com/minio/minio-xl/pkg/crypto/sha512"
"github.com/minio/minio-xl/pkg/probe"
"github.com/minio/minio/pkg/disk"
)
func (fs Filesystem) isValidUploadID(object, uploadID string) bool {
s, ok := fs.multiparts.ActiveSession[object]
if !ok {
return false
}
if uploadID == s.UploadID {
return true
}
return false
}
// ListMultipartUploads - list incomplete multipart sessions for a given BucketMultipartResourcesMetadata
func (fs Filesystem) ListMultipartUploads(bucket string, resources BucketMultipartResourcesMetadata) (BucketMultipartResourcesMetadata, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
if !IsValidBucket(bucket) {
return BucketMultipartResourcesMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
}
bucketPath := filepath.Join(fs.path, bucket)
_, err := os.Stat(bucketPath)
// check bucket exists
if os.IsNotExist(err) {
return BucketMultipartResourcesMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return BucketMultipartResourcesMetadata{}, probe.NewError(InternalError{})
}
var uploads []*UploadMetadata
for object, session := range fs.multiparts.ActiveSession {
if strings.HasPrefix(object, resources.Prefix) {
if len(uploads) > resources.MaxUploads {
sort.Sort(byUploadMetadataKey(uploads))
resources.Upload = uploads
resources.NextKeyMarker = object
resources.NextUploadIDMarker = session.UploadID
resources.IsTruncated = true
return resources, nil
}
// uploadIDMarker is ignored if KeyMarker is empty
switch {
case resources.KeyMarker != "" && resources.UploadIDMarker == "":
if object > resources.KeyMarker {
upload := new(UploadMetadata)
upload.Object = object
upload.UploadID = session.UploadID
upload.Initiated = session.Initiated
uploads = append(uploads, upload)
}
case resources.KeyMarker != "" && resources.UploadIDMarker != "":
if session.UploadID > resources.UploadIDMarker {
if object >= resources.KeyMarker {
upload := new(UploadMetadata)
upload.Object = object
upload.UploadID = session.UploadID
upload.Initiated = session.Initiated
uploads = append(uploads, upload)
}
}
default:
upload := new(UploadMetadata)
upload.Object = object
upload.UploadID = session.UploadID
upload.Initiated = session.Initiated
uploads = append(uploads, upload)
}
}
}
sort.Sort(byUploadMetadataKey(uploads))
resources.Upload = uploads
return resources, nil
}
func (fs Filesystem) concatParts(parts *CompleteMultipartUpload, objectPath string, mw io.Writer) *probe.Error {
for _, part := range parts.Part {
recvMD5 := part.ETag
partFile, err := os.OpenFile(objectPath+fmt.Sprintf("$%d", part.PartNumber), os.O_RDONLY, 0600)
defer partFile.Close()
if err != nil {
return probe.NewError(err)
}
obj, err := ioutil.ReadAll(partFile)
if err != nil {
return probe.NewError(err)
}
calcMD5Bytes := md5.Sum(obj)
// complete multi part request header md5sum per part is hex encoded
recvMD5Bytes, err := hex.DecodeString(strings.Trim(recvMD5, "\""))
if err != nil {
return probe.NewError(InvalidDigest{Md5: recvMD5})
}
if !bytes.Equal(recvMD5Bytes, calcMD5Bytes[:]) {
return probe.NewError(BadDigest{Md5: recvMD5})
}
_, err = io.Copy(mw, bytes.NewBuffer(obj))
if err != nil {
return probe.NewError(err)
}
}
return nil
}
// NewMultipartUpload - initiate a new multipart session
func (fs Filesystem) NewMultipartUpload(bucket, object string) (string, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return "", probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
if !IsValidBucket(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Object: object})
}
bucketPath := filepath.Join(fs.path, bucket)
_, err = os.Stat(bucketPath)
// check bucket exists
if os.IsNotExist(err) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return "", probe.NewError(InternalError{})
}
objectPath := filepath.Join(bucketPath, object)
objectDir := filepath.Dir(objectPath)
if _, err = os.Stat(objectDir); os.IsNotExist(err) {
err = os.MkdirAll(objectDir, 0700)
if err != nil {
return "", probe.NewError(err)
}
}
id := []byte(strconv.FormatInt(rand.Int63(), 10) + bucket + object + time.Now().String())
uploadIDSum := sha512.Sum512(id)
uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
multiPartfile, err := os.OpenFile(objectPath+"$multiparts", os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
return "", probe.NewError(err)
}
defer multiPartfile.Close()
mpartSession := new(MultipartSession)
mpartSession.TotalParts = 0
mpartSession.UploadID = uploadID
mpartSession.Initiated = time.Now().UTC()
var parts []*PartMetadata
mpartSession.Parts = parts
fs.multiparts.ActiveSession[object] = mpartSession
encoder := json.NewEncoder(multiPartfile)
err = encoder.Encode(mpartSession)
if err != nil {
return "", probe.NewError(err)
}
if err := SaveMultipartsSession(fs.multiparts); err != nil {
return "", err.Trace()
}
return uploadID, nil
}
// partNumber is a sortable interface for Part slice
type partNumber []*PartMetadata
func (a partNumber) Len() int { return len(a) }
func (a partNumber) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a partNumber) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
// CreateObjectPart - create a part in a multipart session
func (fs Filesystem) CreateObjectPart(bucket, object, uploadID, expectedMD5Sum string, partID int, size int64, data io.Reader, signature *Signature) (string, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
stfs, err := disk.Stat(fs.path)
if err != nil {
return "", probe.NewError(err)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(stfs.Free) / (float64(stfs.Total) - (0.05 * float64(stfs.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
if partID <= 0 {
return "", probe.NewError(errors.New("invalid part id, cannot be zero or less than zero"))
}
// check bucket name valid
if !IsValidBucket(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !fs.isValidUploadID(object, uploadID) {
return "", probe.NewError(InvalidUploadID{UploadID: uploadID})
}
if strings.TrimSpace(expectedMD5Sum) != "" {
var expectedMD5SumBytes []byte
expectedMD5SumBytes, err = base64.StdEncoding.DecodeString(strings.TrimSpace(expectedMD5Sum))
if err != nil {
// pro-actively close the connection
return "", probe.NewError(InvalidDigest{Md5: expectedMD5Sum})
}
expectedMD5Sum = hex.EncodeToString(expectedMD5SumBytes)
}
bucketPath := filepath.Join(fs.path, bucket)
if _, err = os.Stat(bucketPath); err != nil {
// check bucket exists
if os.IsNotExist(err) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return "", probe.NewError(InternalError{})
}
}
objectPath := filepath.Join(bucketPath, object)
partPath := objectPath + fmt.Sprintf("$%d", partID)
partFile, err := atomic.FileCreate(partPath)
if err != nil {
return "", probe.NewError(err)
}
h := md5.New()
sh := sha256.New()
mw := io.MultiWriter(partFile, h, sh)
_, err = io.CopyN(mw, data, size)
if err != nil {
partFile.CloseAndPurge()
return "", probe.NewError(err)
}
md5sum := hex.EncodeToString(h.Sum(nil))
// Verify if the written object is equal to what is expected, only if it is requested as such
if strings.TrimSpace(expectedMD5Sum) != "" {
if err := isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), md5sum); err != nil {
partFile.CloseAndPurge()
return "", probe.NewError(BadDigest{Md5: expectedMD5Sum, Bucket: bucket, Object: object})
}
}
if signature != nil {
ok, perr := signature.DoesSignatureMatch(hex.EncodeToString(sh.Sum(nil)))
if perr != nil {
partFile.CloseAndPurge()
return "", perr.Trace()
}
if !ok {
partFile.CloseAndPurge()
return "", probe.NewError(SignatureDoesNotMatch{})
}
}
partFile.File.Sync()
partFile.Close()
fi, err := os.Stat(partPath)
if err != nil {
return "", probe.NewError(err)
}
partMetadata := PartMetadata{}
partMetadata.ETag = md5sum
partMetadata.PartNumber = partID
partMetadata.Size = fi.Size()
partMetadata.LastModified = fi.ModTime()
multiPartfile, err := os.OpenFile(objectPath+"$multiparts", os.O_RDWR|os.O_APPEND, 0600)
if err != nil {
return "", probe.NewError(err)
}
defer multiPartfile.Close()
var deserializedMultipartSession MultipartSession
decoder := json.NewDecoder(multiPartfile)
err = decoder.Decode(&deserializedMultipartSession)
if err != nil {
return "", probe.NewError(err)
}
deserializedMultipartSession.Parts = append(deserializedMultipartSession.Parts, &partMetadata)
deserializedMultipartSession.TotalParts++
fs.multiparts.ActiveSession[object] = &deserializedMultipartSession
sort.Sort(partNumber(deserializedMultipartSession.Parts))
encoder := json.NewEncoder(multiPartfile)
err = encoder.Encode(&deserializedMultipartSession)
if err != nil {
return "", probe.NewError(err)
}
return partMetadata.ETag, nil
}
// CompleteMultipartUpload - complete a multipart upload and persist the data
func (fs Filesystem) CompleteMultipartUpload(bucket, object, uploadID string, data io.Reader, signature *Signature) (ObjectMetadata, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
// check bucket name valid
if !IsValidBucket(bucket) {
return ObjectMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return ObjectMetadata{}, probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !fs.isValidUploadID(object, uploadID) {
return ObjectMetadata{}, probe.NewError(InvalidUploadID{UploadID: uploadID})
}
bucketPath := filepath.Join(fs.path, bucket)
if _, err := os.Stat(bucketPath); err != nil {
// check bucket exists
if os.IsNotExist(err) {
return ObjectMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
}
return ObjectMetadata{}, probe.NewError(InternalError{})
}
objectPath := filepath.Join(bucketPath, object)
file, err := atomic.FileCreate(objectPath)
if err != nil {
return ObjectMetadata{}, probe.NewError(err)
}
h := md5.New()
mw := io.MultiWriter(file, h)
partBytes, err := ioutil.ReadAll(data)
if err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
if signature != nil {
sh := sha256.New()
sh.Write(partBytes)
ok, perr := signature.DoesSignatureMatch(hex.EncodeToString(sh.Sum(nil)))
if perr != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
if !ok {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(SignatureDoesNotMatch{})
}
}
parts := &CompleteMultipartUpload{}
if err := xml.Unmarshal(partBytes, parts); err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(MalformedXML{})
}
if !sort.IsSorted(completedParts(parts.Part)) {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(InvalidPartOrder{})
}
if err := fs.concatParts(parts, objectPath, mw); err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, err.Trace()
}
delete(fs.multiparts.ActiveSession, object)
for _, part := range parts.Part {
err = os.Remove(objectPath + fmt.Sprintf("$%d", part.PartNumber))
if err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
}
if err := os.Remove(objectPath + "$multiparts"); err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, probe.NewError(err)
}
if err := SaveMultipartsSession(fs.multiparts); err != nil {
file.CloseAndPurge()
return ObjectMetadata{}, err.Trace()
}
file.File.Sync()
file.Close()
st, err := os.Stat(objectPath)
if err != nil {
return ObjectMetadata{}, probe.NewError(err)
}
newObject := ObjectMetadata{
Bucket: bucket,
Object: object,
Created: st.ModTime(),
Size: st.Size(),
ContentType: "application/octet-stream",
Md5: hex.EncodeToString(h.Sum(nil)),
}
return newObject, nil
}
// ListObjectParts - list parts from incomplete multipart session for a given ObjectResourcesMetadata
func (fs Filesystem) ListObjectParts(bucket, object string, resources ObjectResourcesMetadata) (ObjectResourcesMetadata, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
// check bucket name valid
if !IsValidBucket(bucket) {
return ObjectResourcesMetadata{}, probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return ObjectResourcesMetadata{}, probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !fs.isValidUploadID(object, resources.UploadID) {
return ObjectResourcesMetadata{}, probe.NewError(InvalidUploadID{UploadID: resources.UploadID})
}
objectResourcesMetadata := resources
objectResourcesMetadata.Bucket = bucket
objectResourcesMetadata.Object = object
var startPartNumber int
switch {
case objectResourcesMetadata.PartNumberMarker == 0:
startPartNumber = 1
default:
startPartNumber = objectResourcesMetadata.PartNumberMarker
}
bucketPath := filepath.Join(fs.path, bucket)
_, err := os.Stat(bucketPath)
// check bucket exists
if os.IsNotExist(err) {
return ObjectResourcesMetadata{}, probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return ObjectResourcesMetadata{}, probe.NewError(InternalError{})
}
objectPath := filepath.Join(bucketPath, object)
multiPartfile, err := os.OpenFile(objectPath+"$multiparts", os.O_RDONLY, 0600)
if err != nil {
return ObjectResourcesMetadata{}, probe.NewError(err)
}
defer multiPartfile.Close()
var deserializedMultipartSession MultipartSession
decoder := json.NewDecoder(multiPartfile)
err = decoder.Decode(&deserializedMultipartSession)
if err != nil {
return ObjectResourcesMetadata{}, probe.NewError(err)
}
var parts []*PartMetadata
for i := startPartNumber; i <= deserializedMultipartSession.TotalParts; i++ {
if len(parts) > objectResourcesMetadata.MaxParts {
sort.Sort(partNumber(parts))
objectResourcesMetadata.IsTruncated = true
objectResourcesMetadata.Part = parts
objectResourcesMetadata.NextPartNumberMarker = i
return objectResourcesMetadata, nil
}
parts = append(parts, deserializedMultipartSession.Parts[i-1])
}
sort.Sort(partNumber(parts))
objectResourcesMetadata.Part = parts
return objectResourcesMetadata, nil
}
// AbortMultipartUpload - abort an incomplete multipart session
func (fs Filesystem) AbortMultipartUpload(bucket, object, uploadID string) *probe.Error {
fs.lock.Lock()
defer fs.lock.Unlock()
// check bucket name valid
if !IsValidBucket(bucket) {
return probe.NewError(BucketNameInvalid{Bucket: bucket})
}
// verify object path legal
if !IsValidObjectName(object) {
return probe.NewError(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !fs.isValidUploadID(object, uploadID) {
return probe.NewError(InvalidUploadID{UploadID: uploadID})
}
bucketPath := filepath.Join(fs.path, bucket)
_, err := os.Stat(bucketPath)
// check bucket exists
if os.IsNotExist(err) {
return probe.NewError(BucketNotFound{Bucket: bucket})
}
if err != nil {
return probe.NewError(InternalError{})
}
objectPath := filepath.Join(bucketPath, object)
for _, part := range fs.multiparts.ActiveSession[object].Parts {
err = os.RemoveAll(objectPath + fmt.Sprintf("$%d", part.PartNumber))
if err != nil {
return probe.NewError(err)
}
}
delete(fs.multiparts.ActiveSession, object)
err = os.RemoveAll(objectPath + "$multiparts")
if err != nil {
return probe.NewError(err)
}
return nil
}