https://github.com/codeskyblue/beelog
A simple log for Debug Trace Warn Error Critacal, extract code from astaxie/beego.
https://github.com/codeskyblue/beelog
Last synced: about 1 month ago
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A simple log for Debug Trace Warn Error Critacal, extract code from astaxie/beego.
- Host: GitHub
- URL: https://github.com/codeskyblue/beelog
- Owner: codeskyblue
- Created: 2013-06-22T04:48:13.000Z (almost 12 years ago)
- Default Branch: master
- Last Pushed: 2013-10-10T01:37:20.000Z (over 11 years ago)
- Last Synced: 2025-03-25T14:51:17.654Z (about 2 months ago)
- Language: Go
- Size: 503 KB
- Stars: 6
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
*This project is not maintained anymore. Suggest to use* **[klog](https://github.com/shxsun/klog)**
# beelog
A simple log for Debug Trace Warn Error Critacal, extract code from astaxie/beego.
## 日志处理
beelog默认有一个初始化的BeeLogger对象输出内容到stdout中，你可以通过如下的方式设置自己的输出：
beelog.SetLogger(*log.Logger)
只要你的输出符合`*log.Logger`就可以，例如输出到文件：
fd,err := os.OpenFile("/var/log/beeapp/beeapp.log", os.O_RDWR|os.O_APPEND, 0644)
if err != nil {
beelog.Critical("openfile beeapp.log:", err)
return
}
lg := log.New(fd, "", log.Ldate|log.Ltime)
beelog.SetLogger(lg)
### 不同级别的log日志函数
* Trace(v ...interface{})
* Debug(v ...interface{})
* Info(v ...interface{})
* Warn(v ...interface{})
* Error(v ...interface{})
* Critical(v ...interface{})
你可以通过下面的方式设置不同的日志分级：
beelog.SetLevel(beelog.LevelError)
当你代码中有很多日志输出之后，如果想上线，但是你不想输出Trace、Debug、Info等信息，那么你可以设置如下：
beelog.SetLevel(beelog.LevelWarning)
这样的话就不会输出小于这个level的日志，日志的排序如下：
LevelTrace、LevelDebug、LevelInfo、LevelWarning、LevelError、LevelCritical
用户可以根据不同的级别输出不同的错误信息，如下例子所示：
### Examples of log messages
- Trace
* "Entered parse function validation block"
* "Validation: entered second 'if'"
* "Dictionary 'Dict' is empty. Using default value"
- Debug
* "Web page requested: http://somesite.com Params='...'"
* "Response generated. Response size: 10000. Sending."
* "New file received. Type:PNG Size:20000"
- Info
* "Web server restarted"
* "Hourly statistics: Requested pages: 12345 Errors: 123 ..."
* "Service paused. Waiting for 'resume' call"
- Warn
* "Cache corrupted for file='test.file'. Reading from back-end"
* "Database 192.168.0.7/DB not responding. Using backup 192.168.0.8/DB"
* "No response from statistics server. Statistics not sent"
- Error
* "Internal error. Cannot process request #12345 Error:...."
* "Cannot perform login: credentials DB not responding"
- Critical
* "Critical panic received: .... Shutting down"
* "Fatal error: ... App is shutting down to prevent data corruption or loss"
### Example
func internalCalculationFunc(x, y int) (result int, err error) {
beelog.Debug("calculating z. x:", x, " y:", y)
z := y
switch {
case x == 3:
beelog.Trace("x == 3")
panic("Failure.")
case y == 1:
beelog.Trace("y == 1")
return 0, errors.New("Error!")
case y == 2:
beelog.Trace("y == 2")
z = x
default:
beelog.Trace("default")
z += x
}
retVal := z - 3
beelog.Debug("Returning ", retVal)
return retVal, nil
}
func processInput(input inputData) {
defer func() {
if r := recover(); r != nil {
beelog.Error("Unexpected error occurred: ", r)
outputs <- outputData{result: 0, error: true}
}
}()
beelog.Info("Received input signal. x:", input.x, " y:", input.y)
res, err := internalCalculationFunc(input.x, input.y)
if err != nil {
beelog.Warn("Error in calculation:", err.Error())
}
beelog.Info("Returning result: ", res, " error: ", err)
outputs <- outputData{result: res, error: err != nil}
}
func main() {
inputs = make(chan inputData)
outputs = make(chan outputData)
criticalChan = make(chan int)
beelog.Info("App started.")
go consumeResults(outputs)
beelog.Info("Started receiving results.")
go generateInputs(inputs)
beelog.Info("Started sending signals.")
for {
select {
case input := <-inputs:
processInput(input)
case <-criticalChan:
beelog.Critical("Caught value from criticalChan: Go shut down.")
panic("Shut down due to critical fault.")
}
}
}