Imports github.com/alecthomas/kingpin/v2 github.com/elastic/go-elasticsearch/v8 github.com/elastic/go-elasticsearch/v8/esapi github.com/elastic/go-elasticsearch/v8/esutil github.com/schollz/progressbar/v3 github.com/vmihailenco/msgpack Standard library imports bufio bytes context crypto/tls encoding/csv encoding/json fmt io log net/http os runtime strings sync/atomic time