matryer/way

Way

HTTP router for Go 1.7

• Deliberately simple
• Extremely fast
• Route based on HTTP methods and path
• Path parameters via Context (e.g. /music/:band/:song)
• Trailing / matches path prefixes

Install

There's no need to add a dependency to Way, just copy way.go and way_test.go into your project, or drop them in:

drop github.com/matryer/way

If you prefer, it is go gettable:

go get github.com/matryer/way

Usage

• Use NewRouter to make a new Router
• Call Handle and HandleFunc to add handlers
• Specify HTTP method and path pattern for each route
• Use Param function to get the path parameters from the context

func main() {
	router := way.NewRouter()

	router.HandleFunc("GET", "/music/:band/:song", handleReadSong)
	router.HandleFunc("PUT", "/music/:band/:song", handleUpdateSong)
	router.HandleFunc("DELETE", "/music/:band/:song", handleDeleteSong)

	log.Fatalln(http.ListenAndServe(":8080", router))
}

func handleReadSong(w http.ResponseWriter, r *http.Request) {
	band := way.Param(r.Context(), "band")
	song := way.Param(r.Context(), "song")
	// use 'band' and 'song' parameters...
}

• Prefix matching

To match any path that has a specific prefix, use the ... prefix indicator:

func main() {
	router := way.NewRouter()

	router.HandleFunc("GET", "/images...", handleImages)
	log.Fatalln(http.ListenAndServe(":8080", router))
}

In the above example, the following paths will match:

• /images

• /images/

• /images/one/two/three.jpg

• Set Router.NotFound to handle 404 errors manually

func main() {
	router := way.NewRouter()
	
	router.NotFound = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotFound)
		fmt.Fprintf(w, "This is not the page you are looking for")
	})
	
	log.Fatalln(http.ListenAndServe(":8080", router))
}

Why another HTTP router?

I know, I know. But no routers offer the simplicity of path parameters via Context, and HTTP method matching. Which covers 100% of my use cases so far.