How to find what handler ultimately handled a request?

[jackc]

I have a project with a large number of routes. Many of them have URL params. Some of them are grouped into subrouters.

When I have an issue at a particular URL, sometimes it is difficult to determine what handler is responsible.

For example, given the README.md example routes:

 r.Route("/articles", func(r chi.Router) {
    r.With(paginate).Get("/", listArticles)                           // GET /articles
    r.With(paginate).Get("/{month}-{day}-{year}", listArticlesByDate) // GET /articles/01-16-2017

    r.Post("/", createArticle)                                        // POST /articles
    r.Get("/search", searchArticles)                                  // GET /articles/search

    // Regexp url parameters:
    r.Get("/{articleSlug:[a-z-]+}", getArticleBySlug)                // GET /articles/home-is-toronto

    // Subrouters:
    r.Route("/{articleID}", func(r chi.Router) {
      r.Use(ArticleCtx)
      r.Get("/", getArticle)                                          // GET /articles/123
      r.Put("/", updateArticle)                                       // PUT /articles/123
      r.Delete("/", deleteArticle)                                    // DELETE /articles/123
    })
  })

How would I easily find that PUT /articles/123 was routed to the updateArticle function? Obviously, I can go path segment by path segment and eventually find it. But when there are longer paths that can take a little while.

I'm somewhat spoiled by the Ruby on Rails logs where it logs the exact method that handled each request.