Imports github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/session github.com/aws/aws-sdk-go/service/s3 github.com/aws/aws-sdk-go/service/s3/s3manager Standard library imports bytes cloudrack-lambda-core/core encoding/base64 encoding/json errors image/jpeg io/ioutil log math net/http os strings sync time