func (fr *FileReader) ChannelIterator(bufferSize int) <-chan *record.Record {
output := make(chan *record.Record, bufferSize)
go func() {
var err error
for err == nil {
r := record.Record{}
r.Number = fr.lineNumber
r.Fields = &fr.Header
r.Values, err = fr.reader.Read()
if err != nil {
break
}
r.InitMap()
r.Id = uuid.NewRandom().String()
if fr.IdField != "" {
recId, ok := r.Map[fr.IdField]
if ok {
r.Id = recId
} else {
fr.log.WithFields(log.Fields{
"file_line": fr.lineNumber,
}).Errorf("Missing record id field %s", fr.IdField)
}
}
output <- &r
fr.lineNumber += 1
}
if err == io.EOF {
fr.log.WithFields(log.Fields{
"file_line": fr.lineNumber,
}).Debug("End of file reached")
} else {
fr.log.Error(err)
}
close(output)
}()
return output
}