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302 lines
16 KiB
Go
302 lines
16 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !plan9
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package main
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import (
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_ "embed"
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"fmt"
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"reflect"
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"regexp"
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"strings"
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"testing"
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"github.com/google/go-cmp/cmp"
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appsv1 "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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"sigs.k8s.io/yaml"
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tsapi "tailscale.com/k8s-operator/apis/v1alpha1"
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"tailscale.com/types/ptr"
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)
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// Test_statefulSetNameBase tests that parent name portion in a StatefulSet name
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// base will be truncated if the parent name is longer than 43 chars to ensure
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// that the total does not exceed 52 chars.
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// How many chars need to be cut off parent name depends on an internal var in
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// kube name generation code that can change at which point this test will break
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// and need to be changed. This is okay as we do not rely on that value in
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// code whilst being aware when it changes might still be useful.
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// https://github.com/kubernetes/kubernetes/blob/v1.28.4/staging/src/k8s.io/apiserver/pkg/storage/names/generate.go#L45.
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// https://github.com/kubernetes/kubernetes/pull/116430
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func Test_statefulSetNameBase(t *testing.T) {
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// Service name lengths can be 1 - 63 chars, be paranoid and test them all.
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var b strings.Builder
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for b.Len() < 63 {
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if _, err := b.WriteString("a"); err != nil {
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t.Fatalf("error writing to string builder: %v", err)
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}
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baseLength := b.Len()
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if baseLength > 43 {
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baseLength = 43 // currently 43 is the max base length
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}
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wantsNameR := regexp.MustCompile(`^ts-a{` + fmt.Sprint(baseLength) + `}-$`) // to match a string like ts-aaaa-
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gotName := statefulSetNameBase(b.String())
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if !wantsNameR.MatchString(gotName) {
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t.Fatalf("expected string %s to match regex %s ", gotName, wantsNameR.String()) // fatal rather than error as this test is called 63 times
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}
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}
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}
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func Test_applyProxyClassToStatefulSet(t *testing.T) {
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// Setup
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proxyClassAllOpts := &tsapi.ProxyClass{
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Spec: tsapi.ProxyClassSpec{
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StatefulSet: &tsapi.StatefulSet{
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Labels: map[string]string{"foo": "bar"},
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Annotations: map[string]string{"foo.io/bar": "foo"},
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Pod: &tsapi.Pod{
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Labels: map[string]string{"bar": "foo"},
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Annotations: map[string]string{"bar.io/foo": "foo"},
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SecurityContext: &corev1.PodSecurityContext{
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RunAsUser: ptr.To(int64(0)),
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},
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ImagePullSecrets: []corev1.LocalObjectReference{{Name: "docker-creds"}},
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NodeName: "some-node",
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NodeSelector: map[string]string{"beta.kubernetes.io/os": "linux"},
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Affinity: &corev1.Affinity{NodeAffinity: &corev1.NodeAffinity{RequiredDuringSchedulingIgnoredDuringExecution: &corev1.NodeSelector{}}},
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Tolerations: []corev1.Toleration{{Key: "", Operator: "Exists"}},
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TailscaleContainer: &tsapi.Container{
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SecurityContext: &corev1.SecurityContext{
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Privileged: ptr.To(true),
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},
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Resources: corev1.ResourceRequirements{
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Limits: corev1.ResourceList{corev1.ResourceCPU: resource.MustParse("1000m"), corev1.ResourceMemory: resource.MustParse("128Mi")},
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Requests: corev1.ResourceList{corev1.ResourceCPU: resource.MustParse("500m"), corev1.ResourceMemory: resource.MustParse("64Mi")},
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},
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Env: []tsapi.Env{{Name: "foo", Value: "bar"}, {Name: "TS_USERSPACE", Value: "true"}, {Name: "bar"}},
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},
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TailscaleInitContainer: &tsapi.Container{
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SecurityContext: &corev1.SecurityContext{
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Privileged: ptr.To(true),
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RunAsUser: ptr.To(int64(0)),
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},
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Resources: corev1.ResourceRequirements{
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Limits: corev1.ResourceList{corev1.ResourceCPU: resource.MustParse("1000m"), corev1.ResourceMemory: resource.MustParse("128Mi")},
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Requests: corev1.ResourceList{corev1.ResourceCPU: resource.MustParse("500m"), corev1.ResourceMemory: resource.MustParse("64Mi")},
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},
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Env: []tsapi.Env{{Name: "foo", Value: "bar"}, {Name: "TS_USERSPACE", Value: "true"}, {Name: "bar"}},
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},
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},
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},
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},
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}
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proxyClassJustLabels := &tsapi.ProxyClass{
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Spec: tsapi.ProxyClassSpec{
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StatefulSet: &tsapi.StatefulSet{
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Labels: map[string]string{"foo": "bar"},
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Annotations: map[string]string{"foo.io/bar": "foo"},
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Pod: &tsapi.Pod{
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Labels: map[string]string{"bar": "foo"},
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Annotations: map[string]string{"bar.io/foo": "foo"},
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},
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},
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},
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}
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var userspaceProxySS, nonUserspaceProxySS appsv1.StatefulSet
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if err := yaml.Unmarshal(userspaceProxyYaml, &userspaceProxySS); err != nil {
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t.Fatalf("unmarshaling userspace proxy template: %v", err)
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}
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if err := yaml.Unmarshal(proxyYaml, &nonUserspaceProxySS); err != nil {
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t.Fatalf("unmarshaling non-userspace proxy template: %v", err)
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}
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// Set a couple additional fields so we can test that we don't
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// mistakenly override those.
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labels := map[string]string{
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LabelManaged: "true",
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LabelParentName: "foo",
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}
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annots := map[string]string{
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podAnnotationLastSetClusterIP: "1.2.3.4",
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}
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env := []corev1.EnvVar{{Name: "TS_HOSTNAME", Value: "nginx"}}
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userspaceProxySS.Labels = labels
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userspaceProxySS.Annotations = annots
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userspaceProxySS.Spec.Template.Spec.Containers[0].Env = env
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nonUserspaceProxySS.ObjectMeta.Labels = labels
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nonUserspaceProxySS.ObjectMeta.Annotations = annots
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nonUserspaceProxySS.Spec.Template.Spec.Containers[0].Env = env
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// 1. Test that a ProxyClass with all fields set gets correctly applied
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// to a Statefulset built from non-userspace proxy template.
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wantSS := nonUserspaceProxySS.DeepCopy()
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wantSS.ObjectMeta.Labels = mergeMapKeys(wantSS.ObjectMeta.Labels, proxyClassAllOpts.Spec.StatefulSet.Labels)
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wantSS.ObjectMeta.Annotations = mergeMapKeys(wantSS.ObjectMeta.Annotations, proxyClassAllOpts.Spec.StatefulSet.Annotations)
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wantSS.Spec.Template.Labels = proxyClassAllOpts.Spec.StatefulSet.Pod.Labels
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wantSS.Spec.Template.Annotations = proxyClassAllOpts.Spec.StatefulSet.Pod.Annotations
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wantSS.Spec.Template.Spec.SecurityContext = proxyClassAllOpts.Spec.StatefulSet.Pod.SecurityContext
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wantSS.Spec.Template.Spec.ImagePullSecrets = proxyClassAllOpts.Spec.StatefulSet.Pod.ImagePullSecrets
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wantSS.Spec.Template.Spec.NodeName = proxyClassAllOpts.Spec.StatefulSet.Pod.NodeName
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wantSS.Spec.Template.Spec.NodeSelector = proxyClassAllOpts.Spec.StatefulSet.Pod.NodeSelector
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wantSS.Spec.Template.Spec.Affinity = proxyClassAllOpts.Spec.StatefulSet.Pod.Affinity
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wantSS.Spec.Template.Spec.Tolerations = proxyClassAllOpts.Spec.StatefulSet.Pod.Tolerations
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wantSS.Spec.Template.Spec.Containers[0].SecurityContext = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleContainer.SecurityContext
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wantSS.Spec.Template.Spec.InitContainers[0].SecurityContext = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleInitContainer.SecurityContext
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wantSS.Spec.Template.Spec.Containers[0].Resources = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleContainer.Resources
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wantSS.Spec.Template.Spec.InitContainers[0].Resources = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleInitContainer.Resources
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wantSS.Spec.Template.Spec.InitContainers[0].Env = append(wantSS.Spec.Template.Spec.InitContainers[0].Env, []corev1.EnvVar{{Name: "foo", Value: "bar"}, {Name: "TS_USERSPACE", Value: "true"}, {Name: "bar"}}...)
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wantSS.Spec.Template.Spec.Containers[0].Env = append(wantSS.Spec.Template.Spec.Containers[0].Env, []corev1.EnvVar{{Name: "foo", Value: "bar"}, {Name: "TS_USERSPACE", Value: "true"}, {Name: "bar"}}...)
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gotSS := applyProxyClassToStatefulSet(proxyClassAllOpts, nonUserspaceProxySS.DeepCopy())
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if diff := cmp.Diff(gotSS, wantSS); diff != "" {
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t.Fatalf("Unexpected result applying ProxyClass with all fields set to a StatefulSet for non-userspace proxy (-got +want):\n%s", diff)
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}
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// 2. Test that a ProxyClass with custom labels and annotations for
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// StatefulSet and Pod set gets correctly applied to a Statefulset built
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// from non-userspace proxy template.
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wantSS = nonUserspaceProxySS.DeepCopy()
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wantSS.ObjectMeta.Labels = mergeMapKeys(wantSS.ObjectMeta.Labels, proxyClassJustLabels.Spec.StatefulSet.Labels)
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wantSS.ObjectMeta.Annotations = mergeMapKeys(wantSS.ObjectMeta.Annotations, proxyClassJustLabels.Spec.StatefulSet.Annotations)
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wantSS.Spec.Template.Labels = proxyClassJustLabels.Spec.StatefulSet.Pod.Labels
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wantSS.Spec.Template.Annotations = proxyClassJustLabels.Spec.StatefulSet.Pod.Annotations
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gotSS = applyProxyClassToStatefulSet(proxyClassJustLabels, nonUserspaceProxySS.DeepCopy())
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if diff := cmp.Diff(gotSS, wantSS); diff != "" {
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t.Fatalf("Unexpected result applying ProxyClass with custom labels and annotations to a StatefulSet for non-userspace proxy (-got +want):\n%s", diff)
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}
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// 3. Test that a ProxyClass with all fields set gets correctly applied
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// to a Statefulset built from a userspace proxy template.
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wantSS = userspaceProxySS.DeepCopy()
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wantSS.ObjectMeta.Labels = mergeMapKeys(wantSS.ObjectMeta.Labels, proxyClassAllOpts.Spec.StatefulSet.Labels)
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wantSS.ObjectMeta.Annotations = mergeMapKeys(wantSS.ObjectMeta.Annotations, proxyClassAllOpts.Spec.StatefulSet.Annotations)
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wantSS.Spec.Template.Labels = proxyClassAllOpts.Spec.StatefulSet.Pod.Labels
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wantSS.Spec.Template.Annotations = proxyClassAllOpts.Spec.StatefulSet.Pod.Annotations
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wantSS.Spec.Template.Spec.SecurityContext = proxyClassAllOpts.Spec.StatefulSet.Pod.SecurityContext
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wantSS.Spec.Template.Spec.ImagePullSecrets = proxyClassAllOpts.Spec.StatefulSet.Pod.ImagePullSecrets
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wantSS.Spec.Template.Spec.NodeName = proxyClassAllOpts.Spec.StatefulSet.Pod.NodeName
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wantSS.Spec.Template.Spec.NodeSelector = proxyClassAllOpts.Spec.StatefulSet.Pod.NodeSelector
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wantSS.Spec.Template.Spec.Affinity = proxyClassAllOpts.Spec.StatefulSet.Pod.Affinity
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wantSS.Spec.Template.Spec.Tolerations = proxyClassAllOpts.Spec.StatefulSet.Pod.Tolerations
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wantSS.Spec.Template.Spec.Containers[0].SecurityContext = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleContainer.SecurityContext
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wantSS.Spec.Template.Spec.Containers[0].Resources = proxyClassAllOpts.Spec.StatefulSet.Pod.TailscaleContainer.Resources
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wantSS.Spec.Template.Spec.Containers[0].Env = append(wantSS.Spec.Template.Spec.Containers[0].Env, []corev1.EnvVar{{Name: "foo", Value: "bar"}, {Name: "TS_USERSPACE", Value: "true"}, {Name: "bar"}}...)
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gotSS = applyProxyClassToStatefulSet(proxyClassAllOpts, userspaceProxySS.DeepCopy())
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if diff := cmp.Diff(gotSS, wantSS); diff != "" {
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t.Fatalf("Unexpected result applying ProxyClass with custom labels and annotations to a StatefulSet for a userspace proxy (-got +want):\n%s", diff)
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}
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// 4. Test that a ProxyClass with custom labels and annotations gets correctly applied
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// to a Statefulset built from a userspace proxy template.
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wantSS = userspaceProxySS.DeepCopy()
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wantSS.ObjectMeta.Labels = mergeMapKeys(wantSS.ObjectMeta.Labels, proxyClassJustLabels.Spec.StatefulSet.Labels)
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wantSS.ObjectMeta.Annotations = mergeMapKeys(wantSS.ObjectMeta.Annotations, proxyClassJustLabels.Spec.StatefulSet.Annotations)
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wantSS.Spec.Template.Labels = proxyClassJustLabels.Spec.StatefulSet.Pod.Labels
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wantSS.Spec.Template.Annotations = proxyClassJustLabels.Spec.StatefulSet.Pod.Annotations
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gotSS = applyProxyClassToStatefulSet(proxyClassJustLabels, userspaceProxySS.DeepCopy())
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if diff := cmp.Diff(gotSS, wantSS); diff != "" {
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t.Fatalf("Unexpected result applying ProxyClass with custom labels and annotations to a StatefulSet for a userspace proxy (-got +want):\n%s", diff)
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}
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}
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func mergeMapKeys(a, b map[string]string) map[string]string {
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for key, val := range b {
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a[key] = val
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}
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return a
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}
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func Test_mergeStatefulSetLabelsOrAnnots(t *testing.T) {
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tests := []struct {
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name string
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current map[string]string
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custom map[string]string
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managed []string
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want map[string]string
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}{
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{
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name: "no custom labels specified and none present in current labels, return current labels",
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current: map[string]string{LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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want: map[string]string{LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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managed: tailscaleManagedLabels,
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},
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{
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name: "no custom labels specified, but some present in current labels, return tailscale managed labels only from the current labels",
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current: map[string]string{"foo": "bar", "something.io/foo": "bar", LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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want: map[string]string{LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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managed: tailscaleManagedLabels,
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},
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{
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name: "custom labels specified, current labels only contain tailscale managed labels, return a union of both",
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current: map[string]string{LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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custom: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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want: map[string]string{"foo": "bar", "something.io/foo": "bar", LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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managed: tailscaleManagedLabels,
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},
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{
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name: "custom labels specified, current labels contain tailscale managed labels and custom labels, some of which re not present in the new custom labels, return a union of managed labels and the desired custom labels",
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current: map[string]string{"foo": "bar", "bar": "baz", "app": "1234", LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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custom: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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want: map[string]string{"foo": "bar", "something.io/foo": "bar", "app": "1234", LabelManaged: "true", LabelParentName: "foo", LabelParentType: "svc", LabelParentNamespace: "foo"},
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managed: tailscaleManagedLabels,
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},
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{
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name: "no current labels present, return custom labels only",
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custom: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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want: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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managed: tailscaleManagedLabels,
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},
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{
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name: "no current labels present, no custom labels specified, return empty map",
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want: map[string]string{},
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managed: tailscaleManagedLabels,
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},
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{
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name: "no custom annots specified and none present in current annots, return current annots",
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current: map[string]string{podAnnotationLastSetClusterIP: "1.2.3.4"},
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want: map[string]string{podAnnotationLastSetClusterIP: "1.2.3.4"},
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managed: tailscaleManagedAnnotations,
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},
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{
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name: "no custom annots specified, but some present in current annots, return tailscale managed annots only from the current annots",
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current: map[string]string{"foo": "bar", "something.io/foo": "bar", podAnnotationLastSetClusterIP: "1.2.3.4"},
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want: map[string]string{podAnnotationLastSetClusterIP: "1.2.3.4"},
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managed: tailscaleManagedAnnotations,
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},
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{
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name: "custom annots specified, current annots only contain tailscale managed annots, return a union of both",
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current: map[string]string{podAnnotationLastSetClusterIP: "1.2.3.4"},
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custom: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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want: map[string]string{"foo": "bar", "something.io/foo": "bar", podAnnotationLastSetClusterIP: "1.2.3.4"},
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managed: tailscaleManagedAnnotations,
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},
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{
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name: "custom annots specified, current annots contain tailscale managed annots and custom annots, some of which are not present in the new custom annots, return a union of managed annots and the desired custom annots",
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current: map[string]string{"foo": "bar", "something.io/foo": "bar", podAnnotationLastSetClusterIP: "1.2.3.4"},
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custom: map[string]string{"something.io/foo": "bar"},
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want: map[string]string{"something.io/foo": "bar", podAnnotationLastSetClusterIP: "1.2.3.4"},
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managed: tailscaleManagedAnnotations,
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},
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{
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name: "no current annots present, return custom annots only",
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custom: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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want: map[string]string{"foo": "bar", "something.io/foo": "bar"},
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managed: tailscaleManagedAnnotations,
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},
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{
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name: "no current labels present, no custom labels specified, return empty map",
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want: map[string]string{},
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managed: tailscaleManagedAnnotations,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := mergeStatefulSetLabelsOrAnnots(tt.current, tt.custom, tt.managed); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("mergeStatefulSetLabels() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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