1 files changed, 44 insertions, 0 deletions
diff --git a/pkg/api/handlers/utils/handler.go b/pkg/api/handlers/utils/handler.go
new file mode 100644
index 000000000..0815e6eca
--- /dev/null
+++ b/pkg/api/handlers/utils/handler.go
@@ -0,0 +1,44 @@
+package utils
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// WriteResponse encodes the given value as JSON or string and renders it for http client
+func WriteResponse(w http.ResponseWriter, code int, value interface{}) {
+	switch value.(type) {
+	case string:
+		w.Header().Set("Content-Type", "text/plain; charset=us-ascii")
+		w.WriteHeader(code)
+
+		if _, err := fmt.Fprintln(w, value); err != nil {
+			log.Errorf("unable to send string response: %q", err)
+		}
+	case *os.File:
+		w.Header().Set("Content-Type", "application/octet; charset=us-ascii")
+		w.WriteHeader(code)
+
+		if _, err := io.Copy(w, value.(*os.File)); err != nil {
+			log.Errorf("unable to copy to response: %q", err)
+		}
+	default:
+		WriteJSON(w, code, value)
+	}
+}
+
+func WriteJSON(w http.ResponseWriter, code int, value interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+
+	coder := json.NewEncoder(w)
+	coder.SetEscapeHTML(true)
+	if err := coder.Encode(value); err != nil {
+		log.Errorf("unable to write json: %q", err)
+	}
+}