https://github.com/chzyer/logex
An golang log lib, supports tracking and level, wrap by standard log lib
https://github.com/chzyer/logex
Last synced: 3 months ago
JSON representation
An golang log lib, supports tracking and level, wrap by standard log lib
- Host: GitHub
- URL: https://github.com/chzyer/logex
- Owner: chzyer
- License: mit
- Created: 2014-10-10T06:38:39.000Z (about 11 years ago)
- Default Branch: master
- Last Pushed: 2024-04-02T15:49:33.000Z (over 1 year ago)
- Last Synced: 2025-07-08T01:39:07.207Z (4 months ago)
- Language: Go
- Homepage:
- Size: 30.3 KB
- Stars: 42
- Watchers: 9
- Forks: 13
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
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- awesome-go - logex - An golang log lib, supports tracking and level, wrap by standard log lib - ★ 33 (Logging)
- awesome-go-extra - logex - 10-10T06:38:39Z|2022-04-24T13:15:45Z| (Logging / Advanced Console UIs)
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README
Logex
=======
[](https://travis-ci.org/chzyer/logex)
[](https://godoc.org/github.com/chzyer/logex)
An golang log lib, supports tracing and level, wrap by standard log lib
How To Get
=======
shell
```
go get github.com/chzyer/logex
```
source code
```{go}
import "github.com/chzyer/logex" // package name is logex
func main() {
logex.Info("Hello!")
}
```
Level
=======
```{go}
import "github.com/chzyer/logex"
func main() {
logex.Println("")
logex.Debug("debug staff.") // Only show if has an "DEBUG" named env variable(whatever value).
logex.Info("info")
logex.Warn("")
logex.Fatal("") // also trigger exec "os.Exit(1)"
logex.Error(err) // print error
logex.Struct(obj) // print objs follow such layout "%T(%+v)"
logex.Pretty(obj) // print objs as JSON-style, more readable and hide non-publish properties, just JSON
}
```
Extendability
======
source code
```{go}
type MyStruct struct {
BiteMe bool
}
```
may change to
```{go}
type MyStruct struct {
BiteMe bool
logex.Logger // just this
}
func main() {
ms := new(MyStruct)
ms.Info("woo!")
}
```
Runtime Tracing
======
All log will attach theirs stack info. Stack Info will shown by an layout, `{packageName}.{FuncName}:{FileName}:{FileLine}`
```{go}
package main
import "github.com/chzyer/logex"
func test() {
logex.Pretty("hello")
}
func main() {
test()
}
```
response
```
2014/10/10 15:17:14 [main.test:testlog.go:6][PRETTY] "hello"
```
Error Tracing
======
You can trace an error if you want.
```{go}
package main
import (
"github.com/chzyer/logex"
"os"
)
func openfile() (*os.File, error) {
f, err := os.Open("xxx")
if err != nil {
err = logex.Trace(err)
}
return f, err
}
func test() error {
f, err := openfile()
if err != nil {
return logex.Trace(err)
}
f.Close()
return nil
}
func main() {
err := test()
if err != nil {
logex.Error(err)
return
}
logex.Info("test success")
}
```
response
```
2014/10/10 15:22:29 [main.main:testlog.go:28][ERROR] [main.openfile:11;main.test:19] open xxx: no such file or directory
```