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upgrade: retry when node image update fails due to conflict error (#2123)

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* retry when node image update fails due to conflict error

* improve test
This commit is contained in:
Adrian Stobbe 2023-07-24 12:15:11 +02:00 • committed by GitHub
parent a87b7894db
commit 92abb890ef
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4 changed files with 116 additions and 18 deletions
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61
cli/internal/kubernetes/upgrade_test.go
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@ -13,6 +13,8 @@ import (
"io"
"testing"
kerrors "k8s.io/apimachinery/pkg/api/errors"
"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
"github.com/edgelesssys/constellation/v2/internal/attestation/variant"
"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
@ -24,11 +26,13 @@ import (
"github.com/edgelesssys/constellation/v2/internal/versions/components"
updatev1alpha1 "github.com/edgelesssys/constellation/v2/operators/constellation-node-operator/v2/api/v1alpha1"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
)
func TestUpgradeNodeVersion(t *testing.T) {
@ -46,6 +50,7 @@ func TestUpgradeNodeVersion(t *testing.T) {
wantErr bool
wantUpdate bool
assertCorrectError func(t *testing.T, err error) bool
customClientFn func(nodeVersion updatev1alpha1.NodeVersion) DynamicInterface
}{
"success": {
conf: func() *config.Config {
@ -252,6 +257,29 @@ func TestUpgradeNodeVersion(t *testing.T) {
return assert.ErrorAs(t, err, &upgradeErr)
},
},
"succeed after update retry when the updated node object is outdated": {
conf: func() *config.Config {
conf := config.Default()
conf.Image = "v1.2.3"
conf.KubernetesVersion = versions.SupportedK8sVersions()[1]
return conf
}(),
currentImageVersion: "v1.2.2",
currentClusterVersion: versions.SupportedK8sVersions()[0],
stable: &stubStableClient{
configMaps: map[string]*corev1.ConfigMap{
constants.JoinConfigMap: newJoinConfigMap(`{"0":{"expected":"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA","warnOnly":false}}`),
},
},
wantUpdate: false, // because customClient is used
customClientFn: func(nodeVersion updatev1alpha1.NodeVersion) DynamicInterface {
fakeClient := &fakeDynamicClient{}
fakeClient.On("GetCurrent", mock.Anything, mock.Anything).Return(unstructedObjectWithGeneration(nodeVersion, 1), nil)
fakeClient.On("Update", mock.Anything, mock.Anything).Return(nil, kerrors.NewConflict(schema.GroupResource{Resource: nodeVersion.Name}, nodeVersion.Name, nil)).Once()
fakeClient.On("Update", mock.Anything, mock.Anything).Return(unstructedObjectWithGeneration(nodeVersion, 2), nil).Once()
return fakeClient
},
},
}
for name, tc := range testCases {
@ -269,9 +297,6 @@ func TestUpgradeNodeVersion(t *testing.T) {
},
}
unstrNodeVersion, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&nodeVersion)
require.NoError(err)
var badUpdatedObject *unstructured.Unstructured
if tc.badImageVersion != "" {
nodeVersion.Spec.ImageVersion = tc.badImageVersion
@ -280,6 +305,8 @@ func TestUpgradeNodeVersion(t *testing.T) {
badUpdatedObject = &unstructured.Unstructured{Object: unstrBadNodeVersion}
}
unstrNodeVersion, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&nodeVersion)
require.NoError(err)
dynamicClient := &stubDynamicClient{object: &unstructured.Unstructured{Object: unstrNodeVersion}, badUpdatedObject: badUpdatedObject, getErr: tc.getErr}
upgrader := Upgrader{
stableInterface: tc.stable,
@ -288,9 +315,11 @@ func TestUpgradeNodeVersion(t *testing.T) {
log: logger.NewTest(t),
outWriter: io.Discard,
}
if tc.customClientFn != nil {
upgrader.dynamicInterface = tc.customClientFn(nodeVersion)
}
err = upgrader.UpgradeNodeVersion(context.Background(), tc.conf, tc.force)
// Check upgrades first because if we checked err first, UpgradeImage may error due to other reasons and still trigger an upgrade.
if tc.wantUpdate {
assert.NotNil(dynamicClient.updatedObject)
@ -550,6 +579,23 @@ func newJoinConfigMap(data string) *corev1.ConfigMap {
}
}
type fakeDynamicClient struct {
mock.Mock
}
func (u *fakeDynamicClient) GetCurrent(ctx context.Context, str string) (*unstructured.Unstructured, error) {
args := u.Called(ctx, str)
return args.Get(0).(*unstructured.Unstructured), args.Error(1)
}
func (u *fakeDynamicClient) Update(ctx context.Context, updatedObject *unstructured.Unstructured) (*unstructured.Unstructured, error) {
args := u.Called(ctx, updatedObject)
if args.Get(0) == nil {
return nil, args.Error(1)
}
return updatedObject, args.Error(1)
}
type stubDynamicClient struct {
object *unstructured.Unstructured
updatedObject *unstructured.Unstructured
@ -615,3 +661,10 @@ func (f *stubImageFetcher) FetchReference(_ context.Context,
) (string, error) {
return f.reference, f.fetchReferenceErr
}
func unstructedObjectWithGeneration(nodeVersion updatev1alpha1.NodeVersion, generation int64) *unstructured.Unstructured {
unstrNodeVersion, _ := runtime.DefaultUnstructuredConverter.ToUnstructured(&nodeVersion)
object := &unstructured.Unstructured{Object: unstrNodeVersion}
object.SetGeneration(generation)
return object
}