package version import ( "io" "io/ioutil" "os" "runtime" "text/template" "time" beeLogger "github.com/beego/bee/logger" ) // RuntimeInfo holds information about the current runtime. type RuntimeInfo struct { GoVersion string GOOS string GOARCH string NumCPU int GOPATH string GOROOT string Compiler string BeeVersion string BeegoVersion string } // InitBanner loads the banner and prints it to output // All errors are ignored, the application will not // print the banner in case of error. func InitBanner(out io.Writer, in io.Reader) { if in == nil { beeLogger.Log.Fatal("The input is nil") } banner, err := ioutil.ReadAll(in) if err != nil { beeLogger.Log.Fatalf("Error while trying to read the banner: %s", err) } show(out, string(banner)) } func show(out io.Writer, content string) { t, err := template.New("banner"). Funcs(template.FuncMap{"Now": Now}). Parse(content) if err != nil { beeLogger.Log.Fatalf("Cannot parse the banner template: %s", err) } err = t.Execute(out, RuntimeInfo{ GetGoVersion(), runtime.GOOS, runtime.GOARCH, runtime.NumCPU(), os.Getenv("GOPATH"), runtime.GOROOT(), runtime.Compiler, version, GetBeegoVersion(), }) if err != nil { beeLogger.Log.Error(err.Error()) } } // Now returns the current local time in the specified layout func Now(layout string) string { return time.Now().Format(layout) }