Imports github.com/aws/aws-sdk-go/aws/credentials github.com/aws/aws-sdk-go/service/s3 github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/awserr github.com/aws/aws-sdk-go/aws/session Standard library imports hash crypto/sha512 hash/crc32 encoding/csv bytes crypto/md5 crypto/sha1 crypto/sha256 crypto/tls encoding/hex encoding/json errors fmt io io/ioutil log net/http net/url os path/filepath strings sync time