func execFormatExamples() {
// 默认简洁格式
log.Infof("this is a test message, %d", 6)
// 带标签的格式
log.SetFormat(log.DefaultFormatTag)
log.Tinfof("6ba7b814-9dad-11d1-80b4-00c04fd430c8", "this is a test message, %d", 7)
// 自定义其他格式的日志
format := fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.000",
log.LevelToken, log.PathToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 8)
// 自定义 json 格式的日志
format = fmt.Sprintf(`{"date": "%s", "time": "%s", "level": "%s", "file": "%s", "line": %d, "log": "%s"}`,
"2006-01-02", "15:04:05.999", log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 9)
// 自定义 xml 格式的日志
format = fmt.Sprintf(`<log><date>%s</date><time>%s</time><tid>%s</tid><level>%s</level><file>%s</file><line>%d</line><msg>%s</msg><log>`,
"2006-01-02", "15:04:05.000", log.TagToken, log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Tinfof("6ba7b814-9dad-11d1-80b4-00c04fd430c8", "this is a test message, %d", 10)
}
func execLevelExamples() {
// 默认日志级别 debug
log.Printf("default log level: %s", log.GetLevel())
log.Tracef("IsTraceEnabled? %t", log.IsTraceEnabled())
log.Debugf("IsDebugEnabled? %t", log.IsDebugEnabled())
log.Infof("IsInfoEnabled? %t", log.IsInfoEnabled())
// trace 级别
log.SetLevel(log.Ltrace)
log.Tracef(msgFmt, 1)
// info 级别
log.SetLevel(log.Linfo)
log.Debugf(msgFmt, 2)
log.Infof(msgFmt, 2)
// warn 级别
log.SetLevel(log.Lwarn)
log.Infof(msgFmt, 3)
log.Warnf(msgFmt, 3)
// error 级别
log.SetLevel(log.Lerror)
log.Warnf(msgFmt, 4)
log.Errorf(msgFmt, 4)
// 恢复默认级别，防止影响其他测试
// debug 级别
log.SetLevel(log.Ldebug)
log.Tracef(msgFmt, 5)
log.Debugf(msgFmt, 5)
}
func execSourceFileExamples() {
// 全路经
format := fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.000",
log.LevelToken, log.PathToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 11)
// 包
format = fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.000",
log.LevelToken, log.PackageToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 12)
// 项目
format = fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.000",
log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 13)
// 文件
format = fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.000",
log.LevelToken, log.FileToken, log.LineToken, log.MessageToken)
log.SetFormat(format)
log.Infof("this is a test message, %d", 14)
}
func execCustomPrinterExample() {
c := NewCustomPrinter()
c.SetFormat(log.DefaultFormat)
log.SetPrinter(c)
log.Infof(msgFmt, 16)
// 查看缓冲区
// 每条日志结尾会加一个换行符
line, err := c.ReadLog()
if err != nil {
fmt.Println(err) // 这里不能再调用 log.Error()
os.Exit(1)
}
fmt.Print(line)
}
func execChangeWriterExample() {
// 改变 Writer，把日志打印到缓冲区，也可以打印到文件，定时切换文件，可以实现日志滚动
buf := bytes.NewBuffer(make([]byte, 255))
log.SetWriter(buf)
log.Infof(msgFmt, 15)
// 查看缓冲区
// 每条日志结尾会加一个换行符
line, err := buf.ReadString('\n')
if err != nil {
fmt.Println(err) // 这里不能再调用 log.Error()
os.Exit(1)
}
fmt.Print(line)
}
func main() {
log.Debugf("this is a test message, %d", 1111)
format := fmt.Sprintf("%s %s %s %s:%d %s", "2006-01-02 15:04:05.000000", log.TagToken,
log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Tinfof("6ba7b814-9dad-11d1-80b4-00c04fd430c8", "this is a test message, %d", 1111)
format = fmt.Sprintf(`{"date": "%s", "time": "%s", "level": "%s", "file": "%s", "line": %d, "log": "%s"}`,
"2006-01-02", "15:04:05.999", log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
format = fmt.Sprintf(`<log><date>%s</date><time>%s</time><level>%s</level><file>%s</file><line>%d</line><msg>%s</msg><log>`,
"2006-01-02", "15:04:05.000", log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Tinfof("6ba7b814-9dad-11d1-80b4-00c04fd430c8", "this is a test message, %d", 1111)
log.Error("level = debug")
log.Infof("this is a test message, %d", 1111)
log.Errorf("this is another test message, %d", 22222)
// Fatalf("%d %s", log.FatalLevel, log.FatalLevel)
format = fmt.Sprintf("%s %s %s %s:%d %s", "2006-1-2", "3:4:05.9",
log.LevelToken, log.PathToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
format = fmt.Sprintf("%s %s %s %s:%d %s", "2006-01-02", "15:04:05.999999",
log.LevelToken, log.PackageToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
format = fmt.Sprintf("%s %s %s:%d %s", "2006-01-02 15:04:05.000000",
log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
format = fmt.Sprintf(`{"date": "%s", "time": "%s", "level": "%s", "file": "%s", "line": %d, "log": "%s"}`,
"2006-01-02", "15:04:05.999", log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
format = fmt.Sprintf(`<log><date>%s</date><time>%s</time><level>%s</level><file>%s</file><line>%d</line><msg>%s</msg><log>`,
"2006-01-02", "15:04:05.000", log.LevelToken, log.ProjectToken, log.LineToken, log.MessageToken)
log.ChangeFormat(format)
log.Infof("this is a test message, %d", 1111)
}