Пример #1
0
// updateXChecksum 更新XChecksum, 在之前该方法前, 需要上锁.
func (lg *logger) updateXChecksum(log []byte) {
	lg.xChecksum = calChecksum(lg.xChecksum, log)
	_, err := lg.file.WriteAt(utils.Uint32ToRaw(lg.xChecksum), 0)
	if err != nil {
		panic(err)
	}
	err = lg.file.Sync()
	if err != nil {
		panic(err)
	}
}
Пример #2
0
func Create(path string) *logger {
	file, err := os.OpenFile(path+SUFFIX_LOG, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
	if err != nil {
		panic(err)
	}

	xChecksum := utils.Uint32ToRaw(0)
	_, err = file.Write(xChecksum)
	if err != nil {
		panic(err)
	}
	err = file.Sync()
	if err != nil {
		panic(err)
	}

	lg := new(logger)
	lg.file = file
	lg.xChecksum = 0

	return lg
}