I am using gorilla mux for manage routing. What I am missing is to integrate a middleware between every request.
For example
package main
import (
"fmt"
"github.com/gorilla/mux"
"log"
"net/http"
"strconv"
)
func HomeHandler(response http.ResponseWriter, request *http.Request) {
fmt.Fprintf(response, "Hello home")
}
func main() {
port := 3000
portstring := strconv.Itoa(port)
r := mux.NewRouter()
r.HandleFunc("/", HomeHandler)
http.Handle("/", r)
log.Print("Listening on port " + portstring + " ... ")
err := http.ListenAndServe(":"+portstring, nil)
if err != nil {
log.Fatal("ListenAndServe error: ", err)
}
}
Every incoming request should pass through the middleware. How can I integrate here a midleware?
Update
I will use it in combination with gorilla/sessions, and they say:
Important Note: If you aren't using gorilla/mux, you need to wrap your handlers with context.ClearHandler as or else you will leak memory! An easy way to do this is to wrap the top-level mux when calling http.ListenAndServe:
How can I prevent this scenario?
Just create a wrapper, it's rather easy in Go:
func HomeHandler(response http.ResponseWriter, request *http.Request) {
fmt.Fprintf(response, "Hello home")
}
func Middleware(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log.Println("middleware", r.URL)
h.ServeHTTP(w, r)
})
}
func main() {
r := mux.NewRouter()
r.HandleFunc("/", HomeHandler)
http.Handle("/", Middleware(r))
}