feat: Add auth-proxy sidecar and EventPolicy support to EventTransformer

config/core/resources/eventtransform.yaml

@@ -184,6 +184,18 @@ spec:
                       type:
                         description: Type of condition.
                         type: string
+                policies:
+                  description: List of applied EventPolicies
+                  type: array
+                  items:
+                    type: object
+                    properties:
+                      apiVersion:
+                        description: The API version of the applied EventPolicy. This indicates, which version of EventPolicy is supported by the resource.
+                        type: string
+                      name:
+                        description: The name of the applied EventPolicy
+                        type: string
                 jsonata:
                   description: JsonataTransformationStatus is the status associated with JsonataEventTransformationSpec.
                   type: object

docs/eventing-api.md

@@ -52,7 +52,7 @@ Resource Types:
 <h3 id="duck.knative.dev/v1.AppliedEventPoliciesStatus">AppliedEventPoliciesStatus
 </h3>
 <p>
-(<em>Appears on:</em><a href="#duck.knative.dev/v1.ChannelableStatus">ChannelableStatus</a>, <a href="#eventing.knative.dev/v1.BrokerStatus">BrokerStatus</a>, <a href="#eventing.knative.dev/v1alpha1.RequestReplyStatus">RequestReplyStatus</a>, <a href="#flows.knative.dev/v1.ParallelStatus">ParallelStatus</a>, <a href="#flows.knative.dev/v1.SequenceStatus">SequenceStatus</a>, <a href="#sinks.knative.dev/v1alpha1.IntegrationSinkStatus">IntegrationSinkStatus</a>, <a href="#sinks.knative.dev/v1alpha1.JobSinkStatus">JobSinkStatus</a>)
+(<em>Appears on:</em><a href="#duck.knative.dev/v1.ChannelableStatus">ChannelableStatus</a>, <a href="#eventing.knative.dev/v1.BrokerStatus">BrokerStatus</a>, <a href="#eventing.knative.dev/v1alpha1.EventTransformStatus">EventTransformStatus</a>, <a href="#eventing.knative.dev/v1alpha1.RequestReplyStatus">RequestReplyStatus</a>, <a href="#flows.knative.dev/v1.ParallelStatus">ParallelStatus</a>, <a href="#flows.knative.dev/v1.SequenceStatus">SequenceStatus</a>, <a href="#sinks.knative.dev/v1alpha1.IntegrationSinkStatus">IntegrationSinkStatus</a>, <a href="#sinks.knative.dev/v1alpha1.JobSinkStatus">JobSinkStatus</a>)
 </p>
 <p>
 <p>AppliedEventPoliciesStatus contains the list of policies which apply to a resource.
@@ -3515,6 +3515,23 @@ It exposes the endpoint as an URI to get events delivered.</p>
 </tr>
 <tr>
 <td>
+<code>AppliedEventPoliciesStatus</code><br/>
+<em>
+<a href="#duck.knative.dev/v1.AppliedEventPoliciesStatus">
+AppliedEventPoliciesStatus
+</a>
+</em>
+</td>
+<td>
+<p>
+(Members of <code>AppliedEventPoliciesStatus</code> are embedded into this type.)
+</p>
+<em>(Optional)</em>
+<p>AppliedEventPoliciesStatus contains the list of EventPolicies which apply to this EventTransform.</p>
+</td>
+</tr>
+<tr>
+<td>
 <code>jsonata</code><br/>
 <em>
 <a href="#eventing.knative.dev/v1alpha1.JsonataEventTransformationStatus">

pkg/apis/eventing/v1alpha1/eventtransform_lifecycle.go

@@ -27,8 +27,9 @@ import (
 )
 
 const (
-	TransformConditionAddressable apis.ConditionType = "Addressable"
-	TransformationConditionReady  apis.ConditionType = "TransformationReady"
+	TransformConditionAddressable    apis.ConditionType = "Addressable"
+	TransformationConditionReady     apis.ConditionType = "TransformationReady"
+	TransformationEventPoliciesReady apis.ConditionType = "EventPoliciesReady"
 
 	TransformationAddressableEmptyURL                   string = "NoURL"
 	TransformationAddressableWaitingForServiceEndpoints string = "WaitingForServiceEndpoints"
@@ -48,6 +49,7 @@ const (
 var TransformCondSet = apis.NewLivingConditionSet(
 	TransformationConditionReady,
 	TransformConditionAddressable,
+	TransformationEventPoliciesReady,
 )
 
 // transformJsonataConditionSet is the subset of conditions for the Jsonata transformation
@@ -211,3 +213,19 @@ func (ts *EventTransformStatus) SetAddresses(addresses ...duckv1.Addressable) {
 	}
 	ts.GetConditionSet().Manage(ts).MarkTrue(TransformConditionAddressable)
 }
+
+func (ts *EventTransformStatus) MarkEventPoliciesFailed(reason, messageFormat string, messageA ...interface{}) {
+	TransformCondSet.Manage(ts).MarkFalse(TransformationEventPoliciesReady, reason, messageFormat, messageA...)
+}
+
+func (ts *EventTransformStatus) MarkEventPoliciesUnknown(reason, messageFormat string, messageA ...interface{}) {
+	TransformCondSet.Manage(ts).MarkUnknown(TransformationEventPoliciesReady, reason, messageFormat, messageA...)
+}
+
+func (ts *EventTransformStatus) MarkEventPoliciesTrue() {
+	TransformCondSet.Manage(ts).MarkTrue(TransformationEventPoliciesReady)
+}
+
+func (ts *EventTransformStatus) MarkEventPoliciesTrueWithReason(reason, messageFormat string, messageA ...interface{}) {
+	TransformCondSet.Manage(ts).MarkTrueWithReason(TransformationEventPoliciesReady, reason, messageFormat, messageA...)
+}

pkg/apis/eventing/v1alpha1/eventtransform_lifecycle_test.go

@@ -56,11 +56,13 @@ func TestFullLifecycle(t *testing.T) {
 	topLevel := et.Status.GetCondition(apis.ConditionReady)
 	transformation := et.Status.GetCondition(TransformationConditionReady)
 	addressable := et.Status.GetCondition(TransformConditionAddressable)
+	eventPolicies := et.Status.GetCondition(TransformationEventPoliciesReady)
 
 	assert.Equal(t, corev1.ConditionUnknown, topLevel.Status)
 	assert.Equal(t, corev1.ConditionUnknown, transformation.Status)
 	assert.Equal(t, corev1.ConditionUnknown, addressable.Status)
-	assert.Len(t, et.Status.Conditions, 3)
+	assert.Equal(t, corev1.ConditionUnknown, eventPolicies.Status)
+	assert.Len(t, et.Status.Conditions, 4)
 	assert.Equal(t, false, et.Status.IsReady())
 
 	ds := appsv1.DeploymentStatus{
@@ -75,26 +77,29 @@ func TestFullLifecycle(t *testing.T) {
 
 	deploymentCondition := et.Status.GetCondition(TransformationJsonataDeploymentReady)
 	assert.Equal(t, corev1.ConditionTrue, deploymentCondition.Status)
-	assert.Len(t, et.Status.Conditions, 4)
+	assert.Len(t, et.Status.Conditions, 5)
 	assert.Equal(t, false, et.Status.IsReady())
 
 	transformationCondition := et.Status.GetCondition(TransformationConditionReady)
 	assert.Equal(t, corev1.ConditionUnknown, transformationCondition.Status, et)
-	assert.Len(t, et.Status.Conditions, 4)
+	assert.Len(t, et.Status.Conditions, 5)
 	assert.Equal(t, false, et.Status.IsReady())
 
 	et.Status.PropagateJsonataSinkBindingUnset()
 
 	transformationCondition = et.Status.GetCondition(TransformationConditionReady)
 	assert.Equal(t, corev1.ConditionTrue, transformationCondition.Status, et)
-	assert.Len(t, et.Status.Conditions, 5)
+	assert.Len(t, et.Status.Conditions, 6)
 	assert.Equal(t, false, et.Status.IsReady())
 
 	et.Status.SetAddresses(duckv1.Addressable{URL: apis.HTTPS("example.com")})
 	addrCondition := et.Status.GetCondition(TransformConditionAddressable)
 	assert.Equal(t, corev1.ConditionTrue, addrCondition.Status, et)
-	assert.Len(t, et.Status.Conditions, 5)
+	assert.Len(t, et.Status.Conditions, 6)
+	assert.Equal(t, false, et.Status.IsReady())
 
+	et.Status.MarkEventPoliciesTrue()
+	assert.Len(t, et.Status.Conditions, 6)
 	assert.Equal(t, true, et.Status.IsReady())
 
 	// All conditions are ready

pkg/apis/eventing/v1alpha1/eventtransform_types.go

@@ -22,6 +22,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 
+	eventingduckv1 "knative.dev/eventing/pkg/apis/duck/v1"
 	"knative.dev/pkg/apis"
 	duckv1 "knative.dev/pkg/apis/duck/v1"
 	"knative.dev/pkg/kmeta"
@@ -130,6 +131,10 @@ type EventTransformStatus struct {
 	// +optional
 	duckv1.AddressStatus `json:",inline"`
 
+	// AppliedEventPoliciesStatus contains the list of EventPolicies which apply to this EventTransform.
+	// +optional
+	eventingduckv1.AppliedEventPoliciesStatus `json:",inline"`
+
 	// JsonataTransformationStatus is the status associated with JsonataEventTransformationSpec.
 	// +optional
 	JsonataTransformationStatus *JsonataEventTransformationStatus `json:"jsonata,omitempty"`

pkg/reconciler/eventtransform/controller.go

@@ -20,25 +20,30 @@ import (
 	"context"
 
 	cmclient "github.com/cert-manager/cert-manager/pkg/client/clientset/versioned"
+	"github.com/kelseyhightower/envconfig"
 	"go.uber.org/zap"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/client-go/informers"
+	"knative.dev/eventing/pkg/auth"
 	"knative.dev/eventing/pkg/certificates"
 	"knative.dev/eventing/pkg/eventingtls"
 	kubeclient "knative.dev/pkg/client/injection/kube/client"
 	deploymentinformer "knative.dev/pkg/client/injection/kube/informers/apps/v1/deployment/filtered"
 	configmapinformer "knative.dev/pkg/client/injection/kube/informers/core/v1/configmap/filtered"
 	secretinformer "knative.dev/pkg/client/injection/kube/informers/core/v1/secret/filtered"
 	serviceinformer "knative.dev/pkg/client/injection/kube/informers/core/v1/service/filtered"
+	rolebindinginformer "knative.dev/pkg/client/injection/kube/informers/rbac/v1/rolebinding"
 	"knative.dev/pkg/configmap"
 	"knative.dev/pkg/controller"
 	"knative.dev/pkg/injection"
 	"knative.dev/pkg/kmeta"
 	"knative.dev/pkg/logging"
 
+	"knative.dev/eventing/pkg/apis/eventing/v1alpha1"
 	"knative.dev/eventing/pkg/apis/feature"
 	eventingclient "knative.dev/eventing/pkg/client/injection/client"
+	eventpolicyinformer "knative.dev/eventing/pkg/client/injection/informers/eventing/v1alpha1/eventpolicy"
 	eventtransforminformer "knative.dev/eventing/pkg/client/injection/informers/eventing/v1alpha1/eventtransform"
 	sinkbindinginformer "knative.dev/eventing/pkg/client/injection/informers/sources/v1/sinkbinding/filtered"
 	"knative.dev/eventing/pkg/client/injection/reconciler/eventing/v1alpha1/eventtransform"
@@ -49,6 +54,10 @@ const (
 	NameLabelKey = "eventing.knative.dev/event-transform-name"
 )
 
+type envConfig struct {
+	AuthProxyImage string `envconfig:"AUTH_PROXY_IMAGE" required:"true"`
+}
+
 func NewController(
 	ctx context.Context,
 	cmw configmap.Watcher,
@@ -62,6 +71,8 @@ func NewController(
 	certificatesSecretInformer := secretinformer.Get(ctx, certificates.SecretLabelSelectorPair)
 	trustBundleConfigMapInformer := configmapinformer.Get(ctx, eventingtls.TrustBundleLabelSelector)
 	dynamicCertificatesInformer := certificates.NewDynamicCertificatesInformer()
+	eventPolicyInformer := eventpolicyinformer.Get(ctx)
+	rolebindingInformer := rolebindinginformer.Get(ctx)
 
 	// Create a custom informer as one in knative/pkg doesn't exist for endpoints.
 	jsonataEndpointFactory := informers.NewSharedInformerFactoryWithOptions(
@@ -73,6 +84,11 @@ func NewController(
 	)
 	jsonataEndpointInformer := jsonataEndpointFactory.Core().V1().Endpoints()
 
+	env := &envConfig{}
+	if err := envconfig.Process("", env); err != nil {
+		logging.FromContext(ctx).Panicf("unable to process EventTransform's required environment variables: %v", err)
+	}
+
 	var globalResync func()
 	var enqueueControllerOf func(interface{})
 
@@ -104,6 +120,10 @@ func NewController(
 		cmCertificateLister:        dynamicCertificatesInformer.Lister(),
 		certificatesSecretLister:   certificatesSecretInformer.Lister(),
 		trustBundleConfigMapLister: trustBundleConfigMapInformer.Lister(),
+		eventPolicyLister:          eventPolicyInformer.Lister(),
+		rolebindingLister:          rolebindingInformer.Lister(),
+		eventTransformLister:       eventTransformInformer.Lister(),
+		authProxyImage:             env.AuthProxyImage,
 		configWatcher:              configWatcher,
 	}
 
@@ -126,6 +146,13 @@ func NewController(
 	jsonataConfigMapInformer.Informer().AddEventHandler(controller.HandleAll(enqueueUsingNameLabel(impl)))
 	jsonataSinkBindingInformer.Informer().AddEventHandler(controller.HandleAll(enqueueUsingNameLabel(impl)))
 
+	eventTransformGK := v1alpha1.SchemeGroupVersion.WithKind("EventTransform").GroupKind()
+	eventPolicyInformer.Informer().AddEventHandler(auth.EventPolicyEventHandler(
+		eventTransformInformer.Informer().GetIndexer(),
+		eventTransformGK,
+		impl.EnqueueKey,
+	))
+
 	// Start the factory after creating all necessary informers.
 	jsonataEndpointFactory.Start(ctx.Done())
 	jsonataEndpointFactory.WaitForCacheSync(ctx.Done())