Imports github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/service/cloudfront/sign github.com/aws/aws-sdk-go/service/s3 gopkg.in/mgo.v2 gopkg.in/mgo.v2/bson Standard library imports crypto/rsa crypto/x509 encoding/json encoding/pem errors io io/ioutil log net/http os sort sync time