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tailscale/cmd/k8s-operator/ingress_test.go

274 lines
9.2 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build !plan9
package main
import (
"testing"
"go.uber.org/zap"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client/fake"
"tailscale.com/ipn"
tsapi "tailscale.com/k8s-operator/apis/v1alpha1"
"tailscale.com/kube/kubetypes"
"tailscale.com/types/ptr"
"tailscale.com/util/mak"
)
func TestTailscaleIngress(t *testing.T) {
tsIngressClass := &networkingv1.IngressClass{ObjectMeta: metav1.ObjectMeta{Name: "tailscale"}, Spec: networkingv1.IngressClassSpec{Controller: "tailscale.com/ts-ingress"}}
fc := fake.NewFakeClient(tsIngressClass)
ft := &fakeTSClient{}
fakeTsnetServer := &fakeTSNetServer{certDomains: []string{"foo.com"}}
zl, err := zap.NewDevelopment()
if err != nil {
t.Fatal(err)
}
ingR := &IngressReconciler{
Client: fc,
ssr: &tailscaleSTSReconciler{
Client: fc,
tsClient: ft,
tsnetServer: fakeTsnetServer,
defaultTags: []string{"tag:k8s"},
operatorNamespace: "operator-ns",
proxyImage: "tailscale/tailscale",
},
logger: zl.Sugar(),
}
// 1. Resources get created for regular Ingress
ing := &networkingv1.Ingress{
TypeMeta: metav1.TypeMeta{Kind: "Ingress", APIVersion: "networking.k8s.io/v1"},
ObjectMeta: metav1.ObjectMeta{
Name: "test",
Namespace: "default",
// The apiserver is supposed to set the UID, but the fake client
// doesn't. So, set it explicitly because other code later depends
// on it being set.
UID: types.UID("1234-UID"),
},
Spec: networkingv1.IngressSpec{
IngressClassName: ptr.To("tailscale"),
DefaultBackend: &networkingv1.IngressBackend{
Service: &networkingv1.IngressServiceBackend{
Name: "test",
Port: networkingv1.ServiceBackendPort{
Number: 8080,
},
},
},
TLS: []networkingv1.IngressTLS{
{Hosts: []string{"default-test"}},
},
},
}
mustCreate(t, fc, ing)
mustCreate(t, fc, &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: "test",
Namespace: "default",
},
Spec: corev1.ServiceSpec{
ClusterIP: "1.2.3.4",
Ports: []corev1.ServicePort{{
Port: 8080,
Name: "http"},
},
},
})
expectReconciled(t, ingR, "default", "test")
fullName, shortName := findGenName(t, fc, "default", "test", "ingress")
opts := configOpts{
stsName: shortName,
secretName: fullName,
namespace: "default",
parentType: "ingress",
hostname: "default-test",
app: kubetypes.AppIngressResource,
}
serveConfig := &ipn.ServeConfig{
TCP: map[uint16]*ipn.TCPPortHandler{443: {HTTPS: true}},
Web: map[ipn.HostPort]*ipn.WebServerConfig{"${TS_CERT_DOMAIN}:443": {Handlers: map[string]*ipn.HTTPHandler{"/": {Proxy: "http://1.2.3.4:8080/"}}}},
}
opts.serveConfig = serveConfig
expectEqual(t, fc, expectedSecret(t, fc, opts), nil)
expectEqual(t, fc, expectedHeadlessService(shortName, "ingress"), nil)
expectEqual(t, fc, expectedSTSUserspace(t, fc, opts), removeHashAnnotation)
// 2. Ingress status gets updated with ingress proxy's MagicDNS name
// once that becomes available.
mustUpdate(t, fc, "operator-ns", opts.secretName, func(secret *corev1.Secret) {
mak.Set(&secret.Data, "device_id", []byte("1234"))
mak.Set(&secret.Data, "device_fqdn", []byte("foo.tailnetxyz.ts.net"))
})
expectReconciled(t, ingR, "default", "test")
ing.Finalizers = append(ing.Finalizers, "tailscale.com/finalizer")
ing.Status.LoadBalancer = networkingv1.IngressLoadBalancerStatus{
Ingress: []networkingv1.IngressLoadBalancerIngress{
{Hostname: "foo.tailnetxyz.ts.net", Ports: []networkingv1.IngressPortStatus{{Port: 443, Protocol: "TCP"}}},
},
}
expectEqual(t, fc, ing, nil)
// 3. Resources get created for Ingress that should allow forwarding
// cluster traffic
mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
mak.Set(&ing.ObjectMeta.Annotations, AnnotationExperimentalForwardClusterTrafficViaL7IngresProxy, "true")
})
opts.shouldEnableForwardingClusterTrafficViaIngress = true
expectReconciled(t, ingR, "default", "test")
expectEqual(t, fc, expectedSTS(t, fc, opts), removeHashAnnotation)
// 4. Resources get cleaned up when Ingress class is unset
mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
ing.Spec.IngressClassName = ptr.To("nginx")
})
expectReconciled(t, ingR, "default", "test")
expectReconciled(t, ingR, "default", "test") // deleting Ingress STS requires two reconciles
expectMissing[appsv1.StatefulSet](t, fc, "operator-ns", shortName)
expectMissing[corev1.Service](t, fc, "operator-ns", shortName)
expectMissing[corev1.Secret](t, fc, "operator-ns", fullName)
}
func TestTailscaleIngressWithProxyClass(t *testing.T) {
// Setup
pc := &tsapi.ProxyClass{
ObjectMeta: metav1.ObjectMeta{Name: "custom-metadata"},
Spec: tsapi.ProxyClassSpec{StatefulSet: &tsapi.StatefulSet{
Labels: map[string]string{"foo": "bar"},
Annotations: map[string]string{"bar.io/foo": "some-val"},
Pod: &tsapi.Pod{Annotations: map[string]string{"foo.io/bar": "some-val"}}}},
}
tsIngressClass := &networkingv1.IngressClass{ObjectMeta: metav1.ObjectMeta{Name: "tailscale"}, Spec: networkingv1.IngressClassSpec{Controller: "tailscale.com/ts-ingress"}}
fc := fake.NewClientBuilder().
WithScheme(tsapi.GlobalScheme).
WithObjects(pc, tsIngressClass).
WithStatusSubresource(pc).
Build()
ft := &fakeTSClient{}
fakeTsnetServer := &fakeTSNetServer{certDomains: []string{"foo.com"}}
zl, err := zap.NewDevelopment()
if err != nil {
t.Fatal(err)
}
ingR := &IngressReconciler{
Client: fc,
ssr: &tailscaleSTSReconciler{
Client: fc,
tsClient: ft,
tsnetServer: fakeTsnetServer,
defaultTags: []string{"tag:k8s"},
operatorNamespace: "operator-ns",
proxyImage: "tailscale/tailscale",
},
logger: zl.Sugar(),
}
// 1. Ingress is created with no ProxyClass specified, default proxy
// resources get configured.
ing := &networkingv1.Ingress{
TypeMeta: metav1.TypeMeta{Kind: "Ingress", APIVersion: "networking.k8s.io/v1"},
ObjectMeta: metav1.ObjectMeta{
Name: "test",
Namespace: "default",
// The apiserver is supposed to set the UID, but the fake client
// doesn't. So, set it explicitly because other code later depends
// on it being set.
UID: types.UID("1234-UID"),
},
Spec: networkingv1.IngressSpec{
IngressClassName: ptr.To("tailscale"),
DefaultBackend: &networkingv1.IngressBackend{
Service: &networkingv1.IngressServiceBackend{
Name: "test",
Port: networkingv1.ServiceBackendPort{
Number: 8080,
},
},
},
TLS: []networkingv1.IngressTLS{
{Hosts: []string{"default-test"}},
},
},
}
mustCreate(t, fc, ing)
mustCreate(t, fc, &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: "test",
Namespace: "default",
},
Spec: corev1.ServiceSpec{
ClusterIP: "1.2.3.4",
Ports: []corev1.ServicePort{{
Port: 8080,
Name: "http"},
},
},
})
expectReconciled(t, ingR, "default", "test")
fullName, shortName := findGenName(t, fc, "default", "test", "ingress")
opts := configOpts{
stsName: shortName,
secretName: fullName,
namespace: "default",
parentType: "ingress",
hostname: "default-test",
app: kubetypes.AppIngressResource,
}
serveConfig := &ipn.ServeConfig{
TCP: map[uint16]*ipn.TCPPortHandler{443: {HTTPS: true}},
Web: map[ipn.HostPort]*ipn.WebServerConfig{"${TS_CERT_DOMAIN}:443": {Handlers: map[string]*ipn.HTTPHandler{"/": {Proxy: "http://1.2.3.4:8080/"}}}},
}
opts.serveConfig = serveConfig
expectEqual(t, fc, expectedSecret(t, fc, opts), nil)
expectEqual(t, fc, expectedHeadlessService(shortName, "ingress"), nil)
expectEqual(t, fc, expectedSTSUserspace(t, fc, opts), removeHashAnnotation)
// 2. Ingress is updated to specify a ProxyClass, ProxyClass is not yet
// ready, so proxy resource configuration does not change.
mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
mak.Set(&ing.ObjectMeta.Labels, LabelProxyClass, "custom-metadata")
})
expectReconciled(t, ingR, "default", "test")
expectEqual(t, fc, expectedSTSUserspace(t, fc, opts), removeHashAnnotation)
// 3. ProxyClass is set to Ready by proxy-class reconciler. Ingress get
// reconciled and configuration from the ProxyClass is applied to the
// created proxy resources.
mustUpdateStatus(t, fc, "", "custom-metadata", func(pc *tsapi.ProxyClass) {
pc.Status = tsapi.ProxyClassStatus{
Conditions: []metav1.Condition{{
Status: metav1.ConditionTrue,
Type: string(tsapi.ProxyClassready),
ObservedGeneration: pc.Generation,
}}}
})
expectReconciled(t, ingR, "default", "test")
opts.proxyClass = pc.Name
expectEqual(t, fc, expectedSTSUserspace(t, fc, opts), removeHashAnnotation)
// 4. tailscale.com/proxy-class label is removed from the Ingress, the
// Ingress gets reconciled and the custom ProxyClass configuration is
// removed from the proxy resources.
mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
delete(ing.ObjectMeta.Labels, LabelProxyClass)
})
expectReconciled(t, ingR, "default", "test")
opts.proxyClass = ""
expectEqual(t, fc, expectedSTSUserspace(t, fc, opts), removeHashAnnotation)
}