baisc structure and server begin server impl

pkg/utils/marshal.go

@@ -0,0 +1,18 @@
+package utils
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/caos/utils/logging"
+)
+
+func MarshalJSON(w http.ResponseWriter, i interface{}) {
+	b, err := json.Marshal(i)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	_, err = w.Write(b)
+	logging.Log("UTILS-zVu9OW").OnError(err).Error("error writing response")
+}