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57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package s3_backend
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import (
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"fmt"
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"os"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/s3/s3iface"
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"github.com/aws/aws-sdk-go/service/s3/s3manager"
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)
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func uploadToS3(sess s3iface.S3API, filename string, destBucket string, destKey string) error {
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//open the file
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f, err := os.Open(filename)
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if err != nil {
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return fmt.Errorf("failed to open file %q, %v", filename, err)
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}
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defer f.Close()
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info, err := f.Stat()
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if err != nil {
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return fmt.Errorf("failed to stat file %q, %v", filename, err)
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}
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fileSize := info.Size()
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partSize := int64(64 * 1024 * 1024) // The minimum/default allowed part size is 5MB
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for partSize*1000 < fileSize {
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partSize *= 4
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}
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// Create an uploader with the session and custom options
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uploader := s3manager.NewUploaderWithClient(sess, func(u *s3manager.Uploader) {
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u.PartSize = partSize
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u.Concurrency = 15 // default is 15
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})
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// Upload the file to S3.
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result, err := uploader.Upload(&s3manager.UploadInput{
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Bucket: aws.String(destBucket),
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Key: aws.String(destKey),
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Body: f,
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ACL: aws.String("private"),
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ServerSideEncryption: aws.String("AES256"),
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StorageClass: aws.String("STANDARD_IA"),
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})
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//in case it fails to upload
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if err != nil {
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return fmt.Errorf("failed to upload file, %v", err)
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}
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fmt.Printf("file %s uploaded to %s\n", filename, result.Location)
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return nil
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}
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