remove creationTimestamp under Template object and format metadata pr…

…operly (#50)

pkg/cmd/generate/assertion_test.go

@@ -141,6 +141,9 @@ func (a *kStructureAssertion) listObjects(dirName, kind string, object runtimecl
 			obj := object.DeepCopyObject()
 			objFile, err := os.ReadFile(path)
 			require.NoError(a.t, err)
+			assert.True(a.t, strings.HasPrefix(string(objFile), header), "every file generated by cli should container a header")
+			assert.NotContains(a.t, string(objFile), "creationTimestamp")
+			assert.NotContains(a.t, string(objFile), "user: {}")
 			err = yaml.Unmarshal(objFile, obj)
 			require.NoError(a.t, err)
 			if obj.GetObjectKind().GroupVersionKind().Kind == kind {

pkg/cmd/generate/util.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"regexp"
 	"sort"
 	"strings"
 
@@ -19,6 +20,8 @@ import (
 	runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
 )
 
+var emptyCreationTimestamp = regexp.MustCompile(`\n *creationTimestamp: null`)
+
 type objectsCache map[string]runtimeclient.Object
 
 func (c objectsCache) storeObject(ctx *clusterContext, obj runtimeclient.Object) error {
@@ -162,8 +165,10 @@ const header = `# --------------------------------------------------------------
 
 func writeFile(filePath string, content []byte) error {
 	// https://github.com/kubernetes/kubernetes/issues/67610
-	contentString := strings.ReplaceAll(string(content), "\n  creationTimestamp: null", "")
+	contentString := emptyCreationTimestamp.ReplaceAllString(string(content), "")
 	contentString = strings.ReplaceAll(contentString, "\nuser: {}", "")
+	// This will only apply to konflux tier template that start with metadata = {}
+	contentString = strings.ReplaceAll(contentString, "metadata:\n    objects:", "metadata: {}\n    objects:")
 	contentString = fmt.Sprintf("%s%s", header, contentString)
 	return os.WriteFile(filePath, []byte(contentString), 0600)
 }