forked from kyma-project/kyma
-
Notifications
You must be signed in to change notification settings - Fork 0
/
uploader.go
191 lines (159 loc) · 4.77 KB
/
uploader.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
package uploader
import (
"context"
"fmt"
"io"
"sync"
"time"
"github.com/kyma-project/kyma/components/asset-upload-service/internal/fileheader"
"github.com/golang/glog"
"github.com/minio/minio-go"
"github.com/pkg/errors"
)
//go:generate mockery -name=MinioClient -output=automock -outpkg=automock -case=underscore
type MinioClient interface {
PutObjectWithContext(ctx context.Context, bucketName, objectName string, reader io.Reader, objectSize int64,
opts minio.PutObjectOptions) (n int64, err error)
}
type FileUpload struct {
Bucket string
File fileheader.FileHeader
Directory string
}
type UploadResult struct {
FileName string `json:"fileName"`
RemotePath string `json:"remotePath"`
Bucket string `json:"bucket"`
Size int64 `json:"size"`
}
type UploadError struct {
FileName string
Error error
}
// Uploader is an abstraction layer for Minio client
type Uploader struct {
client MinioClient
externalUploadOrigin string
UploadTimeout time.Duration
MaxUploadWorkers int
}
// New returns a new instance of Uploader
func New(client MinioClient, uploadOrigin string, uploadTimeout time.Duration, maxUploadWorkers int) *Uploader {
return &Uploader{
client: client,
UploadTimeout: uploadTimeout,
MaxUploadWorkers: maxUploadWorkers,
externalUploadOrigin: uploadOrigin,
}
}
// UploadFiles uploads multiple files (Files struct) to particular bucket
func (u *Uploader) UploadFiles(ctx context.Context, filesChannel chan FileUpload, filesCount int) ([]UploadResult, []UploadError) {
errorsCh := make(chan *UploadError, filesCount)
resultsCh := make(chan *UploadResult, filesCount)
contextWithTimeout, cancel := context.WithTimeout(ctx, u.UploadTimeout)
defer cancel()
workersCount := u.countNeededWorkers(filesCount, u.MaxUploadWorkers)
glog.Infof("Creating %d concurrent upload worker(s)...", workersCount)
var waitGroup sync.WaitGroup
waitGroup.Add(workersCount)
for i := 0; i < workersCount; i++ {
go func() {
defer waitGroup.Done()
for {
select {
case <-contextWithTimeout.Done():
glog.Error(errors.Wrapf(contextWithTimeout.Err(), "Error while concurrently uploading file"))
return
default:
}
select {
case upload, ok := <-filesChannel:
if !ok {
return
}
res, err := u.uploadFile(contextWithTimeout, upload)
if err != nil {
errorsCh <- &UploadError{
Error: err,
FileName: upload.File.Filename(),
}
}
if res != nil {
resultsCh <- res
}
default:
}
}
}()
}
waitGroup.Wait()
close(resultsCh)
close(errorsCh)
result := u.populateResults(resultsCh)
errs := u.populateErrors(errorsCh)
return result, errs
}
func (u *Uploader) countNeededWorkers(filesCount, maxUploadWorkers int) int {
if filesCount < maxUploadWorkers {
return filesCount
}
return maxUploadWorkers
}
// UploadFile uploads single file from given path to particular bucket
func (u *Uploader) uploadFile(ctx context.Context, fileUpload FileUpload) (*UploadResult, error) {
file := fileUpload.File
f, err := fileUpload.File.Open()
if err != nil {
return nil, errors.Wrapf(err, "while opening file %s", file.Filename())
}
defer func() {
err := f.Close()
if err != nil {
glog.Error(errors.Wrapf(err, "while closing file %s", file.Filename()))
}
}()
fileName := file.Filename()
fileSize := file.Size()
objectName := fmt.Sprintf("%s/%s", fileUpload.Directory, fileName)
glog.Infof("Uploading `%s` into bucket `%s`...\n", objectName, fileUpload.Bucket)
_, err = u.client.PutObjectWithContext(ctx, fileUpload.Bucket, objectName, f, fileSize, minio.PutObjectOptions{})
if err != nil {
return nil, errors.Wrapf(err, "Error while uploading file `%s` into `%s`", objectName, fileUpload.Bucket)
}
glog.Infof("Upload succeeded for `%s`.\n", objectName)
result := &UploadResult{
FileName: fileName,
Size: fileSize,
Bucket: fileUpload.Bucket,
RemotePath: fmt.Sprintf("%s/%s/%s", u.externalUploadOrigin, fileUpload.Bucket, objectName),
}
return result, nil
}
func (u *Uploader) populateResults(resultsCh chan *UploadResult) []UploadResult {
var result []UploadResult
for i := range resultsCh {
if i == nil {
continue
}
result = append(result, *i)
}
return result
}
// consumeUploadErrors consolidates all error messages into one and returns it
func (u *Uploader) populateErrors(errorsCh chan *UploadError) []UploadError {
var errs []UploadError
for uploadErr := range errorsCh {
if uploadErr == nil {
continue
}
errs = append(errs, *uploadErr)
}
return errs
}
func Origin(uploadEndpoint string, secure bool) string {
uploadProtocol := fmt.Sprint("http")
if secure {
uploadProtocol = uploadProtocol + "s"
}
return fmt.Sprintf("%s://%s", uploadProtocol, uploadEndpoint)
}