func (logger *fileLogger) logEvent(event eventlogger.Event) (err error) {
file, err := logger.getTopicFile(event.Topic)
if err != nil {
return err
}
//if _, err = fmt.Fprintf(file, "[%37s] %10s\n", event.Time, event.Data); err != nil {
var bytes []byte
bytes, err = event.MarshalBinary()
if err != nil {
log.Printf("Error marshalling event, err: %s", err)
return err
}
if _, err = file.Write(bytes); err != nil {
log.Printf("Error writing event, err: %s", err)
}
return err
}
func main() {
scanner := io.NewScanner(os.Stdin)
path := flag.String("path", "topic", "path+filename")
flag.Parse()
file, err := os.Open(*path) // todo: path for topic
if err != nil {
log.Printf("Error opening file, path: %s, err: %s\n", *path, err)
return
}
var recordNumber int
for {
//fmt.Print("\noffset length: ")
fmt.Print("\nrecord number: ")
//offset, err = scanner.ReadLong()
recordNumber, err = scanner.ReadInt()
if err != nil {
fmt.Println("Enter an int\n")
continue
}
//length, err = scanner.ReadInt()
//if err != nil {
// fmt.Println("Enter an int\n")
// continue
//}
bytes := make([]byte, RECLEN)
if _, err = file.ReadAt(bytes, int64(recordNumber)*RECLEN); err != nil {
fmt.Println(err)
} else {
event := eventlogger.Event{}
if err = event.UnmarshalBinary(bytes); err != nil {
fmt.Println(err)
} else {
fmt.Println(event.ToString())
}
}
}
}