我目前正在尝试编写一些中间件来使用fasthttp和fasthttprouter。而且我被困住了。
func jwt(h fasthttprouter.Handle) fasthttprouter.Handle {
myfunc := func(ctx *fasthttp.RequestCtx, _ fasthttprouter.Params) {
fmt.Println(string(ctx.Request.Header.Cookie("Authorization")))
}
return myfunc
}
我现在如何运行实际的处理程序?我觉得我错过了很简单的事情。
我已经阅读了这篇博文:Middleware in Golang。但我迷路了。
有任何想法吗?
问候
例如,让我们创建一个中间件函数,它将使用以下方法处理CORS:
github.com/buaazp/fasthttprouter和github.com/valyala/fasthttp
var (
corsAllowHeaders = "authorization"
corsAllowMethods = "HEAD,GET,POST,PUT,DELETE,OPTIONS"
corsAllowOrigin = "*"
corsAllowCredentials = "true"
)
func CORS(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
ctx.Response.Header.Set("Access-Control-Allow-Credentials", corsAllowCredentials)
ctx.Response.Header.Set("Access-Control-Allow-Headers", corsAllowHeaders)
ctx.Response.Header.Set("Access-Control-Allow-Methods", corsAllowMethods)
ctx.Response.Header.Set("Access-Control-Allow-Origin", corsAllowOrigin)
next(ctx)
}
}
现在我们将这个中间件函数链接到我们的索引处理程序并在路由器上注册它。
func Index(ctx *fasthttp.RequestCtx) {
fmt.Fprint(ctx, "some-api")
}
func main() {
router := fasthttprouter.New()
router.GET("/", Index)
if err := fasthttp.ListenAndServe(":8181", CORS(router.Handler)); err != nil {
log.Fatalf("Error in ListenAndServe: %s", err)
}
}
fasthttp&fasthttprouter的auth中间件示例(新版本)
type Middleware func(h fasthttp.RequestHandler) fasthttp.RequestHandler
type AuthFunc func(ctx *fasthttp.RequestCtx) bool
func NewAuthMiddleware(authFunc AuthFunc) Middleware {
return func(h fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
result, err: = authFunc(ctx)
if result {
h(ctx)
} else {
ctx.Response.SetStatusCode(fasthttp.StatusUnauthorized)
}
}
}
}
func AuthCheck(ctx *fasthttp.RequestCtx)(bool, error) {
return false; // for example ;)
}
// router
authMiddleware: = middleware.NewAuthMiddleware(security.AuthCheck)
...
router.GET("/protected", authMiddleware(handlers.ProtectedHandler))