vendor dependencies with dep

vendor/github.com/go-chi/chi/_examples/custom-handler/main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/go-chi/chi"
+)
+
+type Handler func(w http.ResponseWriter, r *http.Request) error
+
+func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if err := h(w, r); err != nil {
+		// handle returned error here.
+		w.WriteHeader(503)
+		w.Write([]byte("bad"))
+	}
+}
+
+func main() {
+	r := chi.NewRouter()
+	r.Method("GET", "/", Handler(customHandler))
+	http.ListenAndServe(":3333", r)
+}
+
+func customHandler(w http.ResponseWriter, r *http.Request) error {
+	q := r.URL.Query().Get("err")
+
+	if q != "" {
+		return errors.New(q)
+	}
+
+	w.Write([]byte("foo"))
+	return nil
+}