123.go

package main

import (
	"fmt"
	"net/http"

	log "github.com/Sirupsen/logrus"
	"github.com/codegangsta/negroni"
	"github.com/gorilla/mux"
)

func StartHTTPS() {
	r := mux.NewRouter().StrictSlash(false)
	n := negroni.New()
	n.UseHandler(r)

	r.HandleFunc("/", Hello)

	apiv1 := mux.NewRouter().PathPrefix("/api/v1/").Subrouter().StrictSlash(false)
	apiv1.HandleFunc(`/groupinfo/{namespace}/{path:[a-zA-Z0-9-_\/]+}`, GroupInfo).Methods("GET")
	apiv1.HandleFunc(`/groupinfo/{namespace}/{path:[a-zA-Z0-9-_\/]+}`, GroupInfo).Methods("POST")
	r.PathPrefix("/api/v1/").Handler(negroni.New(
		negroni.HandlerFunc(AtlasAuth),
		negroni.Wrap(apiv1),
	))

	fmt.Println("Serving on :3001")
	http.ListenAndServe(":3001", n)
}

func Hello(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Hi there\n")
}

func AtlasAuth(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
	vars := mux.Vars(r)

	log.WithFields(log.Fields{
		"vars":         vars,
		"request_addr": fmt.Sprintf("%p", r),
		"handler":      "AtlasAuth",
	}).Info("mux vars for request")

	if r.Method == "POST" {
		if _, ok := vars["namespace"]; !ok {
			log.Warn("namespace is empty can't continue")
			w.WriteHeader(http.StatusBadRequest)
			fmt.Fprintf(w, "nope\n")
			return
		}

		next(w, r)
	}
	next(w, r)
}

func GroupInfo(w http.ResponseWriter, req *http.Request) {
	vars := mux.Vars(req)

	log.WithFields(log.Fields{
		"vars":         vars,
		"request_addr": fmt.Sprintf("%p", req),
		"handler":      "GroupInfo",
	}).Info("mux vars for request")

	namespace := vars["namespace"]
	path := vars["path"]
	resp := fmt.Sprintf("{\"namespace\": %q, \"path\": %q}", namespace, path)
	w.Header().Set("Content-Type", "application/json")
	w.Write([]byte(resp))
}

func main() {
	StartHTTPS()
}

log.txt

Serving on :3001
time="2016-05-17T11:35:23-04:00" level=info msg="mux vars for request" handler=AtlasAuth request_addr=0xc8200d6000 vars=map[]
time="2016-05-17T11:35:23-04:00" level=info msg="mux vars for request" handler=GroupInfo request_addr=0xc8200d6000 vars=map[namespace:test path:a/b/c]

request

#!/usr/bin/env bash
exec curl -vvvv http://127.0.0.1:3001/api/v1/groupinfo/test/a/b/c