feat: domain finished

api/middleware/cors.go

@@ -0,0 +1,17 @@
+package middleware
+
+import (
+	"net/http"
+)
+
+//Cors adiciona os headers para suportar o CORS nos navegadores
+func Cors(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
+	w.Header().Set("Access-Control-Allow-Headers", "Accept, Authorization, Content-Type")
+	w.Header().Set("Content-Type", "application/json")
+	if r.Method == "OPTIONS" {
+		return
+	}
+	next(w, r)
+}

api/middleware/metrics.go

@@ -0,0 +1,23 @@
+package middleware
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/eminetto/clean-architecture-go/pkg/metric"
+
+	"github.com/codegangsta/negroni"
+)
+
+//Metrics to prometheus
+func Metrics(mService metric.UseCase) negroni.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+		appMetric := metric.NewHTTP(r.URL.Path, r.Method)
+		appMetric.Started()
+		next(w, r)
+		res := w.(negroni.ResponseWriter)
+		appMetric.Finished()
+		appMetric.StatusCode = strconv.Itoa(res.Status())
+		mService.SaveHTTP(appMetric)
+	}
+}

api/middleware/validate.go

@@ -0,0 +1,29 @@
+package middleware
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/eminetto/clean-architecture-go/pkg/entity"
+	"net/http"
+	"github.com/codegangsta/negroni"
+)
+
+//Validate
+func Validate(e entity.Validable) negroni.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+		err := json.NewDecoder(r.Body).Decode(&e)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		err = e.Validate()
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		ctx := context.WithValue(r.Context(), "InputParam", e)
+		next(w, r.WithContext(ctx))
+	}
+}