Exemplo n.º 1
func main() {
	list := karambie.List()
	route := mux.NewRouter()       // use gorilla as router
	martini := martinihelper.New() // and also martini as middleware, see below

	currentDir, _ := os.Getwd()

	log := log.New(os.Stdout, "[Karambie] ", 0)

	logger := logger.New(log, false)                               // log every request
	recovery := recovery.New(log, nil)                             // recover if panic
	notfoundhandler := notfoundhandler.New(true, nil)              // show 404, add trailing slash to url if necessary
	static := static.New(filepath.Join(currentDir, "public"), log) // serve static file in folder "public"

	// register logger service for martini

	// the list is immutable, every calling to Add or AddFunc will create new list
	list = list.Add(logger, recovery)
	list = list.Add(karambie.Later(notfoundhandler))
	list = list.Add(karambie.Later(static))
	// or you can use karambie/middleware.Common() to build those list

	// list is [logger, recovery, notfoundhandler, static]
	// but the order of execution is [logger, recovery, static, notfoundhandler]
	// karambie.Later will create new handler that will be executed after succeeding handler
	// list processing will stop if one of them respond the request (http response status != 0)

	secureList := list.Add(martini.Conv(auth.Basic("user", "pass"))) // execution of secureList is [logger, recovery, auth, static, notfoundhandler]
	list = list.Add(martini.Conv(render.Renderer()))                 // execution of list is       [logger, recovery, render, static, notfoundhandler]
	// list != secureList, because it is immutable, every calling to Add or AddFunc will create new list

	// using http.HandlerFunc style
	route.Handle("/helloworld", list.AddFunc(hello)) // [logger, recovery, render, hello]
	// 'static' and 'notfoundhandler' will be ignored because 'hello' response the request

	// we can user list as NotFoundHandler (handle static file, and show error 404 if necessary)
	route.NotFoundHandler = list // [logger, recovery, static, notfoundhandler]
	// 'notfoundhandler' will be ignored if 'static' response the request

	// using martini.Handler style and gorilla routing
	route.Handle("/sayhi/{name}", list.Add(martini.Conv(sayhi))) // [logger, recovery, render, sayhi]

	// use secureList for sensitive resource
	route.Handle("/secret", secureList.AddFunc(secret)) // [logger, recovery, auth, secret]

	// add filterheader to list
	apiList := list.AddFunc(filterheader) // execution of apiList is [logger, recovery, filterheader, static, notfoundhandler]
	route.Handle("/api", apiList.AddFunc(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
		// this handler will not be called if 'filterheader' is not passed

		// get apikey
		ctx := karambie.Context(rw)
		key := ctx.Get("apikey").(string)

		fmt.Fprintln(rw, "Your api key : "+key)

	http.ListenAndServe(":3000", route)
Exemplo n.º 2
// get common HandlerList, it contain [logger, recovery, notfoundhandler, static]
func Common() (karambie.HandlerList, *log.Logger) {
	tag := filepath.Base(os.Args[0])
	log := log.New(os.Stdout, "["+tag+"] ", 0)
	cwd, _ := os.Getwd()

	list := karambie.List(
		logger.New(log, false),
		recovery.New(log, nil),
		karambie.Later(notfoundhandler.New(true, nil)),
		karambie.Later(static.New(filepath.Join(cwd, "public"), log)),
	return list, log