chore!: change map and filter from string to object

api/v1alpha1/filter.go

@@ -2,11 +2,13 @@ package v1alpha1
 
 import corev1 "k8s.io/api/core/v1"
 
-type Filter string
+type Filter struct {
+	Expression string `json:"expression" protobuf:"bytes,1,opt,name=expression"`
+}
 
 func (m Filter) getContainer(req getContainerReq) corev1.Container {
 	return containerBuilder{}.
 		init(req).
-		args("filter", string(m)).
+		args("filter", m.Expression).
 		build()
 }

api/v1alpha1/filter_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func TestFilter_getContainer(t *testing.T) {
-	const x Filter = "my-filter"
+	x := &Filter{Expression: "my-filter"}
 	c := x.getContainer(getContainerReq{})
 	assert.Equal(t, []string{"filter", "my-filter"}, c.Args)
 }