REST architecture implemented

handlers.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func Index(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintln(w, "Welcome! To send images, go to /image")
+}
+
+func ImageShow(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	imageName := vars["imageName"]
+	fmt.Fprintln(w, "Image show:", imageName)
+}
+
+func NewImage(w http.ResponseWriter, r *http.Request) {
+	var img ImageModel
+	body, err := ioutil.ReadAll(io.LimitReader(r.Body, 1048576))
+	if err != nil {
+		panic(err)
+	}
+	if err := r.Body.Close(); err != nil {
+		panic(err)
+	}
+	fmt.Println(string(body))
+	if err := json.Unmarshal(body, &img); err != nil {
+		w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+		w.WriteHeader(422) // unprocessable entity
+		if err := json.NewEncoder(w).Encode(err); err != nil {
+			panic(err)
+		}
+	}
+	img.File = body
+	fmt.Println(img)
+	fmt.Println(img.File)
+
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusCreated)
+	if err := json.NewEncoder(w).Encode(img.File); err != nil {
+		panic(err)
+	}
+}

imageModel.go

@@ -0,0 +1,5 @@
+package main
+
+type ImageModel struct {
+	File []byte `json:"file"`
+}

logger.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+func Logger(inner http.Handler, name string) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+
+		inner.ServeHTTP(w, r)
+
+		log.Printf(
+			"%s\t%s\t%s\t%s",
+			r.Method,
+			r.RequestURI,
+			name,
+			time.Since(start),
+		)
+	})
+}

main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"log"
+	"net/http"
+)
+
+func main() {
+
+	router := NewRouter()
+
+	log.Fatal(http.ListenAndServe(":3050", router))
+}

router.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func NewRouter() *mux.Router {
+	router := mux.NewRouter().StrictSlash(true)
+	for _, route := range routes {
+		var handler http.Handler
+		handler = route.HandlerFunc
+		handler = Logger(handler, route.Name)
+
+		router.
+			Methods(route.Method).
+			Path(route.Pattern).
+			Name(route.Name).
+			Handler(handler)
+
+	}
+	return router
+}

routes.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"net/http"
+)
+
+type Route struct {
+	Name        string
+	Method      string
+	Pattern     string
+	HandlerFunc http.HandlerFunc
+}
+
+type Routes []Route
+
+var routes = Routes{
+	Route{
+		"Index",
+		"GET",
+		"/",
+		Index,
+	},
+	Route{
+		"ImageShow",
+		"GET",
+		"/images/{imageName}",
+		ImageShow,
+	},
+	Route{
+		"NewImage",
+		"POST",
+		"/image",
+		NewImage,
+	},
+}