英文:
http HandleFunc argument in golang
问题
我想使用一个速率限制或节流器库来限制客户端请求的数量。我在我的代码库中使用了一个供应商库。我想传入一个ResponseWriter、Request和从URL中检索到的第三个变量。当我使用节流器库进行节流时，它只返回一个处理程序，该处理程序只处理两个参数。我该如何将我的第三个参数传递给处理程序？
以下是我的当前代码：
package mainimport ("fmt""github.com/didip/tollbooth""net/http")func viewHandler(w http.ResponseWriter,r *http.Request,uniqueId string,) {//data := getData(uniqueId)fmt.Println("Id:", uniqueId)p := &objects.ModelApp{LoggedUser: "Ryan Hardy", ViewData: "data"}renderTemplate(w, "view", p)}//URL validation for basic web servicesvar validPath = regexp.MustCompile("^/$|/(home|about|view)/(|[a-zA-Z0-9]+)$")func makeHandler(fn func(http.ResponseWriter,*http.Request, string,)) http.HandlerFunc {return func(w http.ResponseWriter,r *http.Request,) {m := validPath.FindStringSubmatch(r.URL.Path)if m == nil {http.NotFound(w, r)return}fn(w, r, m[2])}}func main() {http.Handle("/view/", makeHandler(tollbooth.LimitFuncHandler(tollbooth.NewLimiter(1, time.Second), viewHandler)))http.ListenAndServe(":8080", nil)}
有人可以帮我解决这个问题吗？
英文:
I want to use a rate limiting or throttler library to limit the number of client requests. I use a vendor library in my code base. I want to pass in a ResponseWriter, Request and a third variable retrieved from the URL. When I use the library for throttling, it gives me back a handler that only handles two arguments. How can I pass my third argument into the handler?
Here is my current code:
package mainimport ("fmt""github.com/didip/tollbooth""net/http")func viewHandler(w http.ResponseWriter,r *http.Request,uniqueId string,) {//data := getData(uniqueId)fmt.Println("Id:", uniqueId)p := &objects.ModelApp{LoggedUser: "Ryan Hardy", ViewData: "data"}renderTemplate(w, "view", p)}//URL validation for basic web servicesvar validPath = regexp.MustCompile("^/$|/(home|about|view)/(|[a-zA-Z0-9]+)$")func makeHandler(fn func(http.ResponseWriter,*http.Request, string,)) http.HandlerFunc {return func(w http.ResponseWriter,r *http.Request,) {m := validPath.FindStringSubmatch(r.URL.Path)if m == nil {http.NotFound(w, r)return}fn(w, r, m[2])}}func main() {http.Handle("/view/", makeHandler(tollbooth.LimitFuncHandler(tollbooth.NewLimiter(1, time.Second), viewHandler)))http.ListenAndServe(":8080", nil)}
Could anyone help me with this?
答案1
得分: 1
我在手机上，所以可能很难输入，但你可以使用http.Handle函数，该函数接受一个Handler接口的参数，类似于以下代码：
type makeHandler struct {YourVariable string}func (m *makeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {yourVariableYouNeed := m.YourVariable// 做你需要的任何操作w.Write()}// 做你需要的操作以获取你的变量blah := &makeHandler{yourThing}http.Handle("/views", blah)
我无法测试，因为我在手机上，但它应该可以工作。如果不能，请告诉我。
英文:
I'm on my phone so this may be difficult to type but you could use the http.Handle function which takes an interface of Handler something like
type makeHandler struct {YourVariable string}func (m *makeHandler) ServeHTTP (w http.ResponseWriter, r *http.Request) {yourVariableYouNeed := m.YourVariable// do whateverw.Write()}// do whatever you need to get your variableblah := &makeHandler{ yourThing }http.Handle("/views", blah)
On my phone so can't test but it should work, let me know if it doesn't.
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