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test/integration/controlplane: add new apiserver identity test TestLeaseGarbageCollectionWithDeprecatedLabels

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Signed-off-by: Andrew Sy Kim <andrewsy@google.com>
This commit is contained in:
Andrew Sy Kim 2022-12-19 13:27:56 -05:00
parent 3da0f1809c
commit 423539cf96
1 changed files with 61 additions and 1 deletions
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62
test/integration/controlplane/apiserver_identity_test.go
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@ -134,12 +134,54 @@ func TestLeaseGarbageCollection(t *testing.T) {
t.Run("expired non-identity lease should not be garbage collected",
testLeaseNotGarbageCollected(t, kubeclient, expiredLease))
// identity leases (with k8s.io/component label) created in user namespaces should not be GC'ed
// identity leases (with apiserver.kubernetes.io/identity label) created in user namespaces should not be GC'ed
expiredNonKubeSystemLease := newTestLease(time.Now().Add(-2*time.Hour), metav1.NamespaceDefault)
t.Run("expired non-system identity lease should not be garbage collected",
testLeaseNotGarbageCollected(t, kubeclient, expiredNonKubeSystemLease))
}
func TestLeaseGarbageCollectionWithDeprecatedLabels(t *testing.T) {
oldIdentityLeaseDurationSeconds := controlplane.IdentityLeaseDurationSeconds
oldIdentityLeaseGCPeriod := controlplane.IdentityLeaseGCPeriod
oldIdentityLeaseRenewIntervalPeriod := controlplane.IdentityLeaseRenewIntervalPeriod
defer func() {
// reset the default values for leases after this test
controlplane.IdentityLeaseDurationSeconds = oldIdentityLeaseDurationSeconds
controlplane.IdentityLeaseGCPeriod = oldIdentityLeaseGCPeriod
controlplane.IdentityLeaseRenewIntervalPeriod = oldIdentityLeaseRenewIntervalPeriod
}()
// Shorten lease parameters so GC behavior can be exercised in integration tests
controlplane.IdentityLeaseDurationSeconds = 1
controlplane.IdentityLeaseGCPeriod = time.Second
controlplane.IdentityLeaseRenewIntervalPeriod = time.Second
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.APIServerIdentity, true)()
result := kubeapiservertesting.StartTestServerOrDie(t, nil, nil, framework.SharedEtcd())
defer result.TearDownFn()
kubeclient, err := kubernetes.NewForConfig(result.ClientConfig)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
expiredLease := newTestLeaseWithDeprecatedLabels(time.Now().Add(-2*time.Hour), metav1.NamespaceSystem)
t.Run("expired apiserver lease should be garbage collected",
testLeaseGarbageCollected(t, kubeclient, expiredLease))
freshLease := newTestLeaseWithDeprecatedLabels(time.Now().Add(-2*time.Minute), metav1.NamespaceSystem)
t.Run("fresh apiserver lease should not be garbage collected",
testLeaseNotGarbageCollected(t, kubeclient, freshLease))
expiredLease.Labels = nil
t.Run("expired non-identity lease should not be garbage collected",
testLeaseNotGarbageCollected(t, kubeclient, expiredLease))
// identity leases (with k8s.io/component label) created in user namespaces should not be GC'ed
expiredNonKubeSystemLease := newTestLeaseWithDeprecatedLabels(time.Now().Add(-2*time.Hour), metav1.NamespaceDefault)
t.Run("expired non-system identity lease should not be garbage collected",
testLeaseNotGarbageCollected(t, kubeclient, expiredNonKubeSystemLease))
}
func testLeaseGarbageCollected(t *testing.T, client kubernetes.Interface, lease *coordinationv1.Lease) func(t *testing.T) {
return func(t *testing.T) {
ns := lease.Namespace
@ -203,3 +245,21 @@ func newTestLease(acquireTime time.Time, namespace string) *coordinationv1.Lease
},
}
}
func newTestLeaseWithDeprecatedLabels(acquireTime time.Time, namespace string) *coordinationv1.Lease {
return &coordinationv1.Lease{
ObjectMeta: metav1.ObjectMeta{
Name: testLeaseName,
Namespace: namespace,
Labels: map[string]string{
"k8s.io/component": "kube-apiserver",
},
},
Spec: coordinationv1.LeaseSpec{
HolderIdentity: pointer.StringPtr(testLeaseName),
LeaseDurationSeconds: pointer.Int32Ptr(3600),
AcquireTime: &metav1.MicroTime{Time: acquireTime},
RenewTime: &metav1.MicroTime{Time: acquireTime},
},
}
}