CLOUDP-237545: Ignore tenant readonly fields for Kubernetes generation

internal/kubernetes/operator/deployment/deployment.go

@@ -171,9 +171,36 @@ func BuildAtlasAdvancedDeployment(deploymentStore store.OperatorClusterStore, va
 		advancedSpec.ManagedNamespaces = managedNamespaces
 	}
 
+	cleanTenantFields(&atlasDeployment.Spec)
+
 	return deploymentResult, nil
 }
 
+func cleanTenantFields(out *akov2.AtlasDeploymentSpec) {
+	isTenant := false
+
+	if out.DeploymentSpec == nil {
+		return
+	}
+	for _, spec := range out.DeploymentSpec.ReplicationSpecs {
+		for _, c := range spec.RegionConfigs {
+			if c.ProviderName == "TENANT" {
+				isTenant = true
+				break
+			}
+		}
+	}
+
+	if isTenant {
+		out.DeploymentSpec.BiConnector = nil
+		out.DeploymentSpec.EncryptionAtRestProvider = ""
+		out.DeploymentSpec.DiskSizeGB = nil
+		out.DeploymentSpec.MongoDBMajorVersion = ""
+		out.DeploymentSpec.PitEnabled = nil
+		out.DeploymentSpec.BackupEnabled = nil
+	}
+}
+
 func buildGlobalDeployment(atlasRepSpec []atlasv2.ReplicationSpec, globalDeploymentProvider store.GlobalClusterDescriber, projectID, clusterID string) ([]akov2.CustomZoneMapping, []akov2.ManagedNamespace, error) {
 	globalCluster, err := globalDeploymentProvider.GlobalCluster(projectID, clusterID)
 	if err != nil {

internal/kubernetes/operator/deployment/deployment_test.go

@@ -520,3 +520,51 @@ func TestBuildServerlessDeployments(t *testing.T) {
 		}
 	})
 }
+
+func TestCleanTenantFields(t *testing.T) {
+	spec := akov2.AtlasDeploymentSpec{
+		DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+			BackupEnabled: pointer.Get(true),
+			BiConnector: &akov2.BiConnectorSpec{
+				Enabled:        pointer.Get(true),
+				ReadPreference: "SECONDARY",
+			},
+			EncryptionAtRestProvider: "AWS",
+			PitEnabled:               pointer.Get(true),
+			MongoDBMajorVersion:      "5.1",
+			ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+				{
+					RegionConfigs: []*akov2.AdvancedRegionConfig{
+						{
+							ProviderName: "TENANT",
+						},
+					},
+				},
+			},
+		},
+	}
+
+	cleanTenantFields(&spec)
+
+	expected := akov2.AtlasDeploymentSpec{
+		DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+			BackupEnabled:            nil,
+			BiConnector:              nil,
+			EncryptionAtRestProvider: "",
+			PitEnabled:               nil,
+			MongoDBMajorVersion:      "",
+			ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+				{
+					RegionConfigs: []*akov2.AdvancedRegionConfig{
+						{
+							ProviderName: "TENANT",
+						},
+					},
+				},
+			},
+		},
+	}
+	if !reflect.DeepEqual(spec, expected) {
+		t.Fatalf("Cleaning tenant readonly fields mismatch.\r\nexpected: %v\r\ngot: %v\r\n", expected, spec)
+	}
+}