Negroni Route Specific Middleware

Question

I'm struggling to get my route specific middleware working with httprouter and Negroni. The login route requires Middleware2 and all the other routes require Middleware1.

So far I have:

func Main() {
    router := httprouter.New()
    protectedRoutes := httprouter.New()

    DefineRoutes(router)
    DefineProtectedRoutes(protectedRoutes)

    //This is the block that I'm unsure about
    //How can I introduce Middleware2 for a specific route?
    n := negroni.New()
    n.Use(negroni.HandlerFunc(Middleware1))
    n.UseHandler(router)


    n.Run(":5000")
}

func DefineRoutes(router *httprouter.Router) {
    router.POST("/v1/users/authenticate", UserLogin)
    router.POST("/v1/users/authorize", UserLogin)
    router.POST("/v1/users/logout", UserLogout)
}

func DefineProtectedRoutes(router *httprouter.Router) {
    router.POST("/v1/users/login", UserLogin)
}

but now I'm a bit stuck as the examples on the site (https://github.com/codegangsta/negroni) use the standard handlers.

possible duplicate of Route-specific Middlewares with Negroni — Not_a_Golfer
that answer covers it pretty well, basically you add a negroni middleware chain as a router handler. The down side is that you lose direct access to the httprouter.Params — Not_a_Golfer
I did see this one but as it was the same person answering his own question I wasn't convinced it was "the way to do it" — tommyd456
I couldn't find a better way to do it myself. It seems legit, although with that caveat I mentioned. — Not_a_Golfer
BTW I ended up manually copying data from the request params to the post params so that the handlers can still access it. — Not_a_Golfer

Unni Unni · Accepted Answer · 2016-07-20T00:04:05

Not sure if anyone is still looking for an answer. I think params can be retrieved by calling the router.Lookup function. Here is what I did:

_, params, _ :=  router.Lookup("GET", req.URL.Path)

where router is an instance of httprouter.Router

Negroni Route Specific Middleware

1 Answers