An golang log lib, supports tracing and level, wrap by standard log lib
shell
go get github.com/chzyer/logex
source code
import "github.com/chzyer/logex" // package name is logexfunc main() { logex.Info("Hello!")}
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}
source code
type MyStruct struct { BiteMe bool}
may change to
type MyStruct struct { BiteMe bool logex.Logger // just this}func main() { ms := new(MyStruct) ms.Info("woo!")}
All log will attach theirs stack info. Stack Info will shown by an layout,{packageName}.{FuncName}:{FileName}:{FileLine}
package mainimport "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"
You can trace an error if you want.
package mainimport ("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
