add marshal/unmarshal for dashboards

bolt/internal/internal.go

@@ -188,12 +188,43 @@ func UnmarshalLayout(data []byte, l *chronograf.Layout) error {
 	return nil
 }
 
+// MarshalDashboard encodes a dashboard to binary protobuf format.
 func MarshalDashboard(d chronograf.Dashboard) ([]byte, error) {
-	return proto.Marshal(&Dashboard{
+	cells := make([]*DashboardCell, len(l.Cells))
+	for i, c := range l.Cells {
 
+		cells[i] = &DashboardCell{
+			X:       c.X,
+			Y:       c.Y,
+			W:       c.W,
+			H:       c.H,
+			Name:    c.Name,
+			Queries: c.Queries,
+			Type:    c.Type,
+		}
+	}
+
+	return proto.Marshal(&Dashboard{
+		ID:   d.ID,
+    Cells: cells,
+		Name: d.Name,
 	})
 }
 
+// UnmarshalDashboard decodes a layout from binary protobuf data.
+func UnmarshalDashboard(data []byte, d *chonograf.Dashboard) error {
+	var pb Dashboard
+	if err := proto.Unmarshal(data, &pb); err != nil {
+		return err
+	}
+
+	d.ID    = pb.ID
+	d.Cells = pb.Cells
+	d.Name  = pb.Name
+
+	return nil
+}
+
 // ScopedAlert contains the source and the kapacitor id
 type ScopedAlert struct {
 	chronograf.AlertRule