glg.go
func CustomLog(level string, val ...interface{}) error {
	return glg.out(glg.TagStringToLevel(level), blankFormat(len(val)), val...)
}
func CustomLog(level string, val ...interface{}) error {
	return glg.out(glg.TagStringToLevel(level), blankFormat(len(val)), val...)
}
// CustomLog outputs custom level log