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s3.go
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s3.go
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package simpleuploader
import (
"io"
"log"
"os"
"strings"
"time"
)
import (
"github.com/IAkumaI/retry"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
)
type S3Uploader struct {
client *s3.S3
bucket string
dir string
pathPrefix string
urlPrefix string
}
// NewS3 создает настроенный S3Uploader uploader
func NewS3(config *aws.Config, bucket string, dir string, pathPrefix string, urlPrefix string) Uploader {
sess, err := session.NewSession(config)
if err != nil {
panic(err)
}
return &S3Uploader{
client: s3.New(sess),
bucket: bucket,
dir: dir,
pathPrefix: pathPrefix,
urlPrefix: urlPrefix,
}
}
func (uploader *S3Uploader) Upload(file *os.File, name string) (string, error) {
result := ""
objKey := uploader.pathPrefix + "/" + name
if uploader.dir != "" {
objKey = strings.TrimRight(uploader.dir, "/") + "/" + strings.TrimLeft(objKey, "/")
}
err := retry.Do(10, func(retryCount int) error {
_, err := file.Seek(0, io.SeekStart)
if err != nil {
log.Println("Can not seek to file start")
log.Printf("Retry in 5 sec... (%d)\n", retryCount)
time.Sleep(time.Second * 5)
return err
}
_, err = uploader.client.PutObject(&s3.PutObjectInput{
Body: file,
Bucket: aws.String(uploader.bucket),
Key: aws.String(objKey),
ContentDisposition: aws.String("attachment"),
})
if err != nil {
log.Printf("Can not upload to S3 %s: %v\n", name, err)
log.Printf("Retry in 5 sec... (%d)\n", retryCount)
time.Sleep(time.Second * 5)
return err
}
result = uploader.urlPrefix + uploader.pathPrefix + "/" + name
return nil
})
if err != nil {
return "", err
}
return result, nil
}