Gateway API support (#117)

This change adds support for the new proxy service to the operator
through Gateway API. This change attempts to standardize concepts around
the Gateway API to allow for compatibility with other projects.

Fixes #111
Fixes #44

Signed-off-by: Philip Laine <philip.laine@gmail.com>
This commit is contained in:
Philip Laine
2026-03-19 13:01:58 +01:00
committed by GitHub
parent ccf819d2ff
commit 7acd175882
11 changed files with 769 additions and 69 deletions
+212
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@@ -0,0 +1,212 @@
/*
Copyright 2025.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package controller
import (
"context"
"fmt"
"slices"
"time"
netbird "github.com/netbirdio/netbird/shared/management/client/rest"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
netbirdiov1 "github.com/netbirdio/kubernetes-operator/api/v1"
)
const (
GatewayFinalizer = "gateway.netbird.io/gateway"
)
type GatewayReconciler struct {
client.Client
}
func (r *GatewayReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
gw := gatewayv1.Gateway{}
err := r.Get(ctx, req.NamespacedName, &gw)
if err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// Check if referenced class belongs to this controller.
gwc := &gatewayv1.GatewayClass{}
nn := types.NamespacedName{
Name: string(gw.Spec.GatewayClassName),
}
err = r.Get(ctx, nn, gwc)
if err != nil {
return ctrl.Result{}, err
}
if string(gwc.Spec.ControllerName) != GatewayControllerName {
return ctrl.Result{}, nil
}
if !meta.IsStatusConditionTrue(gwc.Status.Conditions, string(gatewayv1.GatewayClassConditionStatusAccepted)) {
return ctrl.Result{RequeueAfter: 5 * time.Second}, nil
}
// Handle resource deletion.
if !gw.DeletionTimestamp.IsZero() {
return r.reconcileDelete(ctx, gw)
}
// Verify Gateway configuration.
if gw.Spec.Infrastructure == nil || gw.Spec.Infrastructure.ParametersRef == nil {
cond := metav1.Condition{
Type: string(gatewayv1.GatewayConditionAccepted),
Status: metav1.ConditionFalse,
Reason: string(gatewayv1.GatewayReasonInvalidParameters),
Message: "Gateway expected to reference a NBRoutingPeer",
}
if meta.SetStatusCondition(&gw.Status.Conditions, cond) {
err = r.Status().Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
return ctrl.Result{}, nil
}
parametersRef := gw.Spec.Infrastructure.ParametersRef
if parametersRef.Group != "netbird.io" && parametersRef.Kind != "NBRoutingPeer" {
cond := metav1.Condition{
Type: string(gatewayv1.GatewayConditionAccepted),
Status: metav1.ConditionFalse,
Reason: string(gatewayv1.GatewayReasonInvalidParameters),
Message: fmt.Sprintf("unsupported parameter group and kind %s.%s", parametersRef.Group, parametersRef.Kind),
}
if meta.SetStatusCondition(&gw.Status.Conditions, cond) {
err = r.Status().Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
return ctrl.Result{}, nil
}
cond := metav1.Condition{
Type: string(gatewayv1.GatewayConditionAccepted),
Status: metav1.ConditionTrue,
Reason: string(gatewayv1.GatewayReasonAccepted),
}
if meta.SetStatusCondition(&gw.Status.Conditions, cond) {
err = r.Status().Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
if controllerutil.AddFinalizer(&gw, GatewayFinalizer) {
err = r.Client.Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
}
// Ensure routing peer is ready.
nbrp := &netbirdiov1.NBRoutingPeer{}
err = r.Get(ctx, types.NamespacedName{Namespace: req.Namespace, Name: parametersRef.Name}, nbrp)
if err != nil {
return ctrl.Result{}, err
}
idx := slices.IndexFunc(nbrp.Status.Conditions, func(cond netbirdiov1.NBCondition) bool {
return cond.Type == netbirdiov1.NBSetupKeyReady
})
if idx == -1 || nbrp.Status.Conditions[idx].Status != corev1.ConditionStatus(metav1.ConditionTrue) {
cond := metav1.Condition{
Type: string(gatewayv1.GatewayConditionProgrammed),
Status: metav1.ConditionFalse,
Reason: string(gatewayv1.GatewayReasonProgrammed),
Message: fmt.Sprintf("NBRoutingPeer %s is not ready", parametersRef.Name),
}
if meta.SetStatusCondition(&gw.Status.Conditions, cond) {
err = r.Status().Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
return ctrl.Result{RequeueAfter: 5 * time.Second}, nil
}
// Signal Gateway is programmed.
cond = metav1.Condition{
Type: string(gatewayv1.GatewayConditionProgrammed),
Status: metav1.ConditionTrue,
Reason: string(gatewayv1.GatewayReasonProgrammed),
}
if meta.SetStatusCondition(&gw.Status.Conditions, cond) {
err = r.Status().Update(ctx, &gw)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
return ctrl.Result{}, nil
}
func (r *GatewayReconciler) reconcileDelete(ctx context.Context, gw gatewayv1.Gateway) (ctrl.Result, error) {
var httpRouteList gatewayv1.HTTPRouteList
err := r.Client.List(ctx, &httpRouteList)
if err != nil {
return ctrl.Result{}, err
}
gvk := gw.GroupVersionKind()
for _, route := range httpRouteList.Items {
for _, ref := range route.Spec.ParentRefs {
group := gvk.Group
if ref.Group != nil {
group = string(*ref.Group)
}
kind := gvk.Kind
if ref.Kind != nil {
kind = string(*ref.Kind)
}
namespace := route.Namespace
if ref.Namespace != nil {
namespace = string(*ref.Namespace)
}
if group == gvk.Group && kind == gvk.Kind && namespace == gw.Namespace && string(ref.Name) == gw.Name {
return ctrl.Result{RequeueAfter: 5 * time.Second}, nil
}
}
}
if controllerutil.RemoveFinalizer(&gw, GatewayFinalizer) {
err := r.Client.Update(ctx, &gw)
if err != nil && !netbird.IsNotFound(err) {
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *GatewayReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&gatewayv1.Gateway{}).
Complete(r)
}
@@ -0,0 +1,107 @@
package controller
import (
"context"
"time"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
)
const (
GatewayClassFinalizer = "gateway.netbird.io/gatewayclass"
GatewayControllerName = "gateway.netbird.io/controller"
)
type GatewayClassReconciler struct {
client.Client
}
func (r *GatewayClassReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
gwc := gatewayv1.GatewayClass{}
err := r.Client.Get(ctx, req.NamespacedName, &gwc)
if err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// Controller name does not match.
if gwc.Spec.ControllerName != GatewayControllerName {
return ctrl.Result{}, nil
}
// Gateway class is being deleted.
if !gwc.GetDeletionTimestamp().IsZero() {
return r.reconcileDelete(ctx, gwc)
}
// Validate configuration.
if gwc.Spec.ParametersRef != nil {
cond := metav1.Condition{
Type: string(gatewayv1.GatewayClassConditionStatusAccepted),
Status: metav1.ConditionFalse,
Reason: string(gatewayv1.GatewayClassReasonInvalidParameters),
Message: "Parameters references is not supported.",
}
if meta.SetStatusCondition(&gwc.Status.Conditions, cond) {
err = r.Client.Status().Update(ctx, &gwc)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
}
// Add finalizer to validate deletion.
if controllerutil.AddFinalizer(&gwc, GatewayClassFinalizer) {
err = r.Client.Update(ctx, &gwc)
if err != nil {
return ctrl.Result{}, err
}
}
// Set condition to accepted.
cond := metav1.Condition{
Type: string(gatewayv1.GatewayClassConditionStatusAccepted),
Status: metav1.ConditionTrue,
Reason: string(gatewayv1.GatewayClassReasonAccepted),
Message: "Reconciled by Netbird Operator.",
}
meta.SetStatusCondition(&gwc.Status.Conditions, cond)
err = r.Client.Status().Update(ctx, &gwc)
if err != nil {
return ctrl.Result{}, err
}
return ctrl.Result{}, nil
}
func (r *GatewayClassReconciler) reconcileDelete(ctx context.Context, gwc gatewayv1.GatewayClass) (ctrl.Result, error) {
var gatewayList gatewayv1.GatewayList
err := r.Client.List(ctx, &gatewayList)
if err != nil {
return ctrl.Result{}, err
}
for _, gw := range gatewayList.Items {
if string(gw.Spec.GatewayClassName) == gwc.ObjectMeta.Name {
return ctrl.Result{RequeueAfter: 5 * time.Second}, nil
}
}
if controllerutil.RemoveFinalizer(&gwc, GatewayClassFinalizer) {
err = r.Client.Update(ctx, &gwc)
if err != nil {
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *GatewayClassReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&gatewayv1.GatewayClass{}).
Complete(r)
}
+286
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@@ -0,0 +1,286 @@
package controller
import (
"context"
"encoding/json"
"fmt"
"strings"
netbird "github.com/netbirdio/netbird/shared/management/client/rest"
"github.com/netbirdio/netbird/shared/management/http/api"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
netbirdiov1 "github.com/netbirdio/kubernetes-operator/api/v1"
"github.com/netbirdio/kubernetes-operator/internal/util"
)
const (
HTTPRouteFinalizer = "gateway.netbird.io/httproute"
ResourceIDAnnotationKey = "gateway.netbird.io/resource-ids"
ProxyIDAnnotationKey = "gateway.netbird.io/proxy-ids"
)
type HTTPRouteReconciler struct {
client.Client
Netbird *netbird.Client
ClusterDNS string
}
// nolint:gocyclo
func (r *HTTPRouteReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
logger := ctrl.Log.WithName("HTTPRoute").WithValues("namespace", req.Namespace, "name", req.Name)
hr := gatewayv1.HTTPRoute{}
err := r.Get(ctx, req.NamespacedName, &hr)
if err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
if !hr.DeletionTimestamp.IsZero() {
return r.reconcileDelete(ctx, hr)
}
for _, parent := range hr.Spec.ParentRefs {
// Check if controller is responsible for route.
parentNamespace := hr.Namespace
if parent.Namespace != nil {
parentNamespace = string(*parent.Namespace)
}
gw := &gatewayv1.Gateway{}
err = r.Client.Get(ctx, types.NamespacedName{Namespace: parentNamespace, Name: string(parent.Name)}, gw)
if err != nil {
return ctrl.Result{}, err
}
gwc := &gatewayv1.GatewayClass{}
err := r.Get(ctx, client.ObjectKey{Name: string(gw.Spec.GatewayClassName)}, gwc)
if err != nil {
return ctrl.Result{}, err
}
if gwc.Spec.ControllerName != GatewayControllerName {
continue
}
if !meta.IsStatusConditionTrue(gw.Status.Conditions, string(gatewayv1.GatewayConditionProgrammed)) {
logger.Info("gateway is not ready", "name", gw.ObjectMeta.Name)
return ctrl.Result{Requeue: true}, nil
}
nbrp := &netbirdiov1.NBRoutingPeer{}
err = r.Get(ctx, types.NamespacedName{Namespace: gw.Namespace, Name: gw.Spec.Infrastructure.ParametersRef.Name}, nbrp)
if err != nil {
return ctrl.Result{}, err
}
if controllerutil.AddFinalizer(&hr, HTTPRouteFinalizer) {
err = r.Client.Update(ctx, &hr)
if err != nil {
return ctrl.Result{}, err
}
}
// Create network resources.
oldResourceIDs := map[string]string{}
if s, ok := hr.Annotations[ResourceIDAnnotationKey]; ok {
err := json.Unmarshal([]byte(s), &oldResourceIDs)
if err != nil {
return ctrl.Result{}, err
}
}
resourceIDs := map[string]string{}
targets := []api.ServiceTarget{}
for _, rule := range hr.Spec.Rules {
for _, ref := range rule.BackendRefs {
// TODO (phillebaba): Support reference grants.
refNamespace := hr.Namespace
key := strings.Join([]string{string(ref.Name), refNamespace}, "/")
networkResourceReq := api.NetworkResourceRequest{
Name: fmt.Sprintf("%s/%s/%s/%s", refNamespace, gw.Name, hr.Name, ref.Name),
Enabled: true,
Address: fmt.Sprintf("%s.%s.%s", ref.Name, refNamespace, r.ClusterDNS),
Groups: []string{},
}
id, err := func() (string, error) {
if id, ok := oldResourceIDs[key]; ok {
_, err := r.Netbird.Networks.Resources(*nbrp.Status.NetworkID).Get(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return "", err
}
if err == nil {
_, err = r.Netbird.Networks.Resources(*nbrp.Status.NetworkID).Update(ctx, id, networkResourceReq)
if err != nil {
return "", err
}
delete(oldResourceIDs, key)
return id, nil
}
}
resource, err := r.Netbird.Networks.Resources(*nbrp.Status.NetworkID).Create(ctx, networkResourceReq)
if err != nil {
return "", err
}
return resource.Id, nil
}()
if err != nil {
return ctrl.Result{}, err
}
resourceIDs[key] = id
target := api.ServiceTarget{
Enabled: true,
Path: nil,
TargetId: id,
Protocol: "http",
TargetType: "domain",
}
targets = append(targets, target)
}
}
// Create proxy service.
oldProxyIDs := map[string]string{}
if s, ok := hr.Annotations[ProxyIDAnnotationKey]; ok {
err := json.Unmarshal([]byte(s), &oldProxyIDs)
if err != nil {
return ctrl.Result{}, err
}
}
proxyIDs := map[string]string{}
for _, hostname := range hr.Spec.Hostnames {
proxyCreate := api.PostApiReverseProxiesServicesJSONRequestBody{
Auth: api.ServiceAuthConfig{},
Domain: string(hostname),
Enabled: true,
Name: string(hostname),
PassHostHeader: util.Ptr(false),
RewriteRedirects: util.Ptr(false),
Targets: targets,
}
id, err := func() (string, error) {
if id, ok := oldProxyIDs[string(hostname)]; ok {
_, err := r.Netbird.ReverseProxyServices.Get(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return "", err
}
if err == nil {
_, err := r.Netbird.ReverseProxyServices.Update(ctx, id, proxyCreate)
if err != nil {
return "", nil
}
delete(oldProxyIDs, string(hostname))
return id, nil
}
}
proxy, err := r.Netbird.ReverseProxyServices.Create(ctx, proxyCreate)
if err != nil {
return "", err
}
return proxy.Id, nil
}()
if err != nil {
return ctrl.Result{}, err
}
proxyIDs[string(hostname)] = id
}
for _, id := range oldResourceIDs {
err = r.Netbird.Networks.Resources(*nbrp.Status.NetworkID).Delete(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return ctrl.Result{}, err
}
}
for _, id := range oldProxyIDs {
err = r.Netbird.ReverseProxyServices.Delete(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return ctrl.Result{}, err
}
}
b, err := json.Marshal(resourceIDs)
if err != nil {
return ctrl.Result{}, err
}
hr.Annotations[ResourceIDAnnotationKey] = string(b)
b, err = json.Marshal(proxyIDs)
if err != nil {
return ctrl.Result{}, err
}
hr.Annotations[ProxyIDAnnotationKey] = string(b)
err = r.Client.Update(ctx, &hr)
if err != nil {
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
func (r *HTTPRouteReconciler) reconcileDelete(ctx context.Context, hr gatewayv1.HTTPRoute) (ctrl.Result, error) {
for _, parent := range hr.Spec.ParentRefs {
parentNamespace := hr.Namespace
if parent.Namespace != nil {
parentNamespace = string(*parent.Namespace)
}
gw := &gatewayv1.Gateway{}
err := r.Client.Get(ctx, types.NamespacedName{Namespace: parentNamespace, Name: string(parent.Name)}, gw)
if err != nil {
return ctrl.Result{}, err
}
nbrp := &netbirdiov1.NBRoutingPeer{}
err = r.Get(ctx, types.NamespacedName{Namespace: gw.Namespace, Name: gw.Spec.Infrastructure.ParametersRef.Name}, nbrp)
if err != nil {
return ctrl.Result{}, err
}
proxyIDs := map[string]string{}
if s, ok := hr.Annotations[ProxyIDAnnotationKey]; ok {
err := json.Unmarshal([]byte(s), &proxyIDs)
if err != nil {
return ctrl.Result{}, err
}
}
for _, id := range proxyIDs {
err = r.Netbird.ReverseProxyServices.Delete(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return ctrl.Result{}, err
}
}
resourceIDs := map[string]string{}
if s, ok := hr.Annotations[ResourceIDAnnotationKey]; ok {
err := json.Unmarshal([]byte(s), &resourceIDs)
if err != nil {
return ctrl.Result{}, err
}
}
for _, id := range resourceIDs {
err = r.Netbird.Networks.Resources(*nbrp.Status.NetworkID).Delete(ctx, id)
if err != nil && !netbird.IsNotFound(err) {
return ctrl.Result{}, err
}
}
if controllerutil.RemoveFinalizer(&hr, HTTPRouteFinalizer) {
err := r.Client.Update(ctx, &hr)
if err != nil {
return ctrl.Result{}, err
}
}
}
return ctrl.Result{}, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *HTTPRouteReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&gatewayv1.HTTPRoute{}).
Complete(r)
}
+1 -2
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@@ -23,8 +23,7 @@ import (
type NBPolicyReconciler struct {
client.Client
Netbird *netbird.Client
ClusterName string
Netbird *netbird.Client
}
var (
+16 -24
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@@ -89,9 +89,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("Not enough information to create policy", func() {
It("should not create any policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
mux.HandleFunc("/api/groups", func(w http.ResponseWriter, r *http.Request) {
@@ -117,9 +116,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("Enough information to create TCP policy", func() {
It("should create 1 policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbResource := &netbirdiov1.NBResource{
@@ -215,9 +213,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("TCP information no longer sufficient", func() {
It("should delete tcp policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbpolicy.Status.ManagedServiceList = append(nbpolicy.Status.ManagedServiceList, "default/noexist")
@@ -257,9 +254,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("Enough information to create UDP policy", func() {
It("should create 1 policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbResource := &netbirdiov1.NBResource{
@@ -355,9 +351,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("UDP information no longer sufficient", func() {
It("should delete udp policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbpolicy.Status.ManagedServiceList = append(nbpolicy.Status.ManagedServiceList, "default/noexist")
@@ -397,9 +392,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("Existing protocol gets restricted", func() {
It("Should delete protocol policy", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbResource := &netbirdiov1.NBResource{
@@ -477,9 +471,8 @@ var _ = Describe("NBPolicy Controller", func() {
It("Should give all information to Update method", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbResource := &netbirdiov1.NBResource{
@@ -595,9 +588,8 @@ var _ = Describe("NBPolicy Controller", func() {
When("NBPolicy is set for deletion", func() {
It("should delete Policies", func() {
controllerReconciler := &NBPolicyReconciler{
Client: k8sClient,
Netbird: netbirdClient,
ClusterName: "Kubernetes",
Client: k8sClient,
Netbird: netbirdClient,
}
nbpolicy.Status.TCPPolicyID = util.Ptr("policyidtcp")