在AWS开发工具包（golang）中设置内容处置和内容类型无效

Question

The title says most of it. I have the following code:

        copySource := bucket + "/" + sourcePath + "/" + filenameIn
        destPath := lambdaParams.DestinationPath + "/" + filenameIn
        copyObjectInput := s3.CopyObjectInput{
                CopySource: aws.String(copySource),
                Bucket:     aws.String(bucket),
                Key:        aws.String(destPath),
        }

            if filepath.Ext(filenameIn) == ".pdf" {
copyObjectInput.SetContentType("application/pdf").SetContentDisposition("inline; filename=\"" + filenameIn + "\"")
            }

            _, err := svc.CopyObject(&copyObjectInput)
            if err != nil {
                    logErrorAndInformGFS(err, "S3 copy error.", c, log, filenameIn)
                    return err
            }

I am setting both the Content-Type and the Content-Disposition with the hope of having the copied object have the new values from Content-Type and Content-Disposition. However, I can see in AWS that the copied file has the same metadata as the original file. What am I leaving out?

Answer 1

It looks like the issue was that I needed to tell AWS I wanted to REPLACE the metadata. Adding the following line finally allowed me to change the metadata:

copyObjectInput.SetMetadataDirective("REPLACE")