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enqueue_requests_for_mesh_events.go
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enqueue_requests_for_mesh_events.go
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package virtualservice
import (
"context"
appmesh "github.com/aws/aws-app-mesh-controller-for-k8s/apis/appmesh/v1beta2"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/k8s"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/mesh"
"github.com/go-logr/logr"
"k8s.io/client-go/util/workqueue"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
)
func NewEnqueueRequestsForMeshEvents(k8sClient client.Client, log logr.Logger) *enqueueRequestsForMeshEvents {
return &enqueueRequestsForMeshEvents{
k8sClient: k8sClient,
log: log,
}
}
var _ handler.EventHandler = (*enqueueRequestsForMeshEvents)(nil)
type enqueueRequestsForMeshEvents struct {
k8sClient client.Client
log logr.Logger
}
// Create is called in response to an create event
func (h *enqueueRequestsForMeshEvents) Create(e event.CreateEvent, queue workqueue.RateLimitingInterface) {
// no-op
}
// Update is called in response to an update event
func (h *enqueueRequestsForMeshEvents) Update(e event.UpdateEvent, queue workqueue.RateLimitingInterface) {
// virtualService reconcile depends on mesh is active or not.
// so we only need to trigger virtualService reconcile if mesh's active status changed.
msOld := e.ObjectOld.(*appmesh.Mesh)
msNew := e.ObjectNew.(*appmesh.Mesh)
if mesh.IsMeshActive(msOld) != mesh.IsMeshActive(msNew) {
h.enqueueVirtualServicesForMesh(context.Background(), queue, msNew)
}
}
// Delete is called in response to a delete event
func (h *enqueueRequestsForMeshEvents) Delete(e event.DeleteEvent, queue workqueue.RateLimitingInterface) {
// no-op
}
// Generic is called in response to an event of an unknown type or a synthetic event triggered as a cron or
// external trigger request
func (h *enqueueRequestsForMeshEvents) Generic(e event.GenericEvent, queue workqueue.RateLimitingInterface) {
// no-op
}
func (h *enqueueRequestsForMeshEvents) enqueueVirtualServicesForMesh(ctx context.Context, queue workqueue.RateLimitingInterface, ms *appmesh.Mesh) {
vsList := &appmesh.VirtualServiceList{}
if err := h.k8sClient.List(ctx, vsList); err != nil {
h.log.Error(err, "failed to enqueue virtualServices for mesh events",
"mesh", k8s.NamespacedName(ms))
return
}
for _, vs := range vsList.Items {
if vs.Spec.MeshRef == nil || !mesh.IsMeshReferenced(ms, *vs.Spec.MeshRef) {
continue
}
queue.Add(ctrl.Request{NamespacedName: k8s.NamespacedName(&vs)})
}
}