Imports github.com/aws/aws-sdk-go-v2/aws github.com/aws/aws-sdk-go-v2/config github.com/aws/aws-sdk-go-v2/service/s3 github.com/cenkalti/backoff/v4 github.com/klauspost/compress/gzip github.com/klauspost/compress/zstd github.com/ulikunitz/xz Standard library imports bufio compress/bzip2 context encoding/binary errors fmt io net/http net/url os path/filepath runtime strings time