CLOUDP-237545: Ignore tenant readonly fields for Kubernetes generation

internal/kubernetes/operator/deployment/deployment.go

@@ -171,9 +171,35 @@ func BuildAtlasAdvancedDeployment(deploymentStore store.OperatorClusterStore, va
 		advancedSpec.ManagedNamespaces = managedNamespaces
 	}
 
+	if hasTenantRegionConfig(atlasDeployment) {
+		atlasDeployment.Spec.DeploymentSpec.BiConnector = nil
+		atlasDeployment.Spec.DeploymentSpec.EncryptionAtRestProvider = ""
+		atlasDeployment.Spec.DeploymentSpec.DiskSizeGB = nil
+		atlasDeployment.Spec.DeploymentSpec.MongoDBMajorVersion = ""
+		atlasDeployment.Spec.DeploymentSpec.PitEnabled = nil
+		atlasDeployment.Spec.DeploymentSpec.BackupEnabled = nil
+	}
+
 	return deploymentResult, nil
 }
 
+func hasTenantRegionConfig(out *akov2.AtlasDeployment) bool {
+	if out.Spec.DeploymentSpec == nil {
+		return false
+	}
+	for _, spec := range out.Spec.DeploymentSpec.ReplicationSpecs {
+		if spec == nil {
+			continue
+		}
+		for _, c := range spec.RegionConfigs {
+			if c != nil && c.ProviderName == "TENANT" {
+				return true
+			}
+		}
+	}
+	return false
+}
+
 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 +520,105 @@ func TestBuildServerlessDeployments(t *testing.T) {
 		}
 	})
 }
+
+func TestCleanTenantFields(t *testing.T) {
+	for _, tt := range []struct {
+		name   string
+		spec   akov2.AtlasDeploymentSpec
+		expect bool
+	}{
+		{
+			name: "nil deploymentspec",
+			spec: akov2.AtlasDeploymentSpec{
+				DeploymentSpec: nil,
+			},
+			expect: false,
+		},
+		{
+			name: "nil replicationspec",
+			spec: akov2.AtlasDeploymentSpec{
+				DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+					ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+						nil,
+					},
+				},
+			},
+			expect: false,
+		},
+		{
+			name: "nil regionconfig",
+			spec: akov2.AtlasDeploymentSpec{
+				DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+					ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+						{
+							RegionConfigs: []*akov2.AdvancedRegionConfig{
+								nil,
+							},
+						},
+					},
+				},
+			},
+			expect: false,
+		},
+		{
+			name: "multiple non-tenant regionconfigs",
+			spec: akov2.AtlasDeploymentSpec{
+				DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+					ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+						{
+							RegionConfigs: []*akov2.AdvancedRegionConfig{
+								{
+									ProviderName: "AWS",
+								},
+								{
+									ProviderName: "GCP",
+								},
+								{
+									ProviderName: "AZURE",
+								},
+								{
+									ProviderName: "AWS",
+								},
+							},
+						},
+					},
+				},
+			},
+			expect: false,
+		},
+		{
+			name: "multiple non-tenant regionconfigs and one tenant",
+			spec: akov2.AtlasDeploymentSpec{
+				DeploymentSpec: &akov2.AdvancedDeploymentSpec{
+					ReplicationSpecs: []*akov2.AdvancedReplicationSpec{
+						{
+							RegionConfigs: []*akov2.AdvancedRegionConfig{
+								{
+									ProviderName: "AWS",
+								},
+								{
+									ProviderName: "GCP",
+								},
+								{
+									ProviderName: "AZURE",
+								},
+								{
+									ProviderName: "TENANT",
+								},
+							},
+						},
+					},
+				},
+			},
+			expect: true,
+		},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := hasTenantRegionConfig(&akov2.AtlasDeployment{
+				Spec: tt.spec,
+			}); got != tt.expect {
+				t.Errorf("expect hasTenantRegionConfig to be %t, got %t", tt.expect, got)
+			}
+		})
+	}
+}