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config-controller.go
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config-controller.go
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package controller
import (
"context"
"reflect"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
routev1 "github.com/openshift/api/route/v1"
storagev1 "k8s.io/api/storage/v1"
extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"github.com/go-logr/logr"
cdiv1 "kubevirt.io/containerized-data-importer/pkg/apis/core/v1beta1"
"kubevirt.io/containerized-data-importer/pkg/operator"
"kubevirt.io/containerized-data-importer/pkg/util"
"sigs.k8s.io/controller-runtime/pkg/cache"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
)
// CDIConfigReconciler members
type CDIConfigReconciler struct {
client client.Client
// use this for getting any resources not in the install namespace or cluster scope
uncachedClient client.Client
scheme *runtime.Scheme
log logr.Logger
uploadProxyServiceName string
configName string
cdiNamespace string
}
func isErrCacheNotStarted(err error) bool {
if err == nil {
return false
}
return err.(*cache.ErrCacheNotStarted) != nil
}
// Reconcile the reconcile loop for the CDIConfig object.
func (r *CDIConfigReconciler) Reconcile(req reconcile.Request) (reconcile.Result, error) {
log := r.log.WithValues("CDIConfig", req.NamespacedName)
log.Info("reconciling CDIConfig")
config, err := r.createCDIConfig()
if err != nil {
log.Error(err, "Unable to create CDIConfig")
return reconcile.Result{}, err
}
// Keep a copy of the original for comparison later.
currentConfigCopy := config.DeepCopyObject()
if err := r.reconcileUploadProxyURL(config, log); err != nil {
return reconcile.Result{}, err
}
if err := r.reconcileStorageClass(config); err != nil {
return reconcile.Result{}, err
}
if err := r.reconcileDefaultPodResourceRequirements(config); err != nil {
return reconcile.Result{}, err
}
if !reflect.DeepEqual(currentConfigCopy, config) {
// Updates have happened, update CDIConfig.
log.Info("Updating CDIConfig", "CDIConfig.Name", config.Name, "config", config)
if err := r.client.Update(context.TODO(), config); err != nil {
return reconcile.Result{}, err
}
}
return reconcile.Result{}, nil
}
func (r *CDIConfigReconciler) reconcileUploadProxyURL(config *cdiv1.CDIConfig, log logr.Logger) error {
config.Status.UploadProxyURL = config.Spec.UploadProxyURLOverride
// No override, try Ingress
if config.Status.UploadProxyURL == nil {
if err := r.reconcileIngress(config); err != nil {
log.Error(err, "Unable to reconcile Ingress")
return err
}
}
// No override or Ingress, try Route
if config.Status.UploadProxyURL == nil {
if err := r.reconcileRoute(config); err != nil {
log.Error(err, "Unable to reconcile Routes")
return err
}
}
return nil
}
func (r *CDIConfigReconciler) reconcileIngress(config *cdiv1.CDIConfig) error {
log := r.log.WithName("CDIconfig").WithName("IngressReconcile")
ingressList := &extensionsv1beta1.IngressList{}
if err := r.client.List(context.TODO(), ingressList, &client.ListOptions{}); IgnoreIsNoMatchError(err) != nil {
return err
}
for _, ingress := range ingressList.Items {
ingressURL := getURLFromIngress(&ingress, r.uploadProxyServiceName)
if ingressURL != "" {
log.Info("Setting upload proxy url", "IngressURL", ingressURL)
config.Status.UploadProxyURL = &ingressURL
return nil
}
}
log.Info("No ingress found, setting to blank", "IngressURL", "")
config.Status.UploadProxyURL = nil
return nil
}
func (r *CDIConfigReconciler) reconcileRoute(config *cdiv1.CDIConfig) error {
log := r.log.WithName("CDIconfig").WithName("RouteReconcile")
routeList := &routev1.RouteList{}
if err := r.client.List(context.TODO(), routeList, &client.ListOptions{}); IgnoreIsNoMatchError(err) != nil {
return err
}
for _, route := range routeList.Items {
routeURL := getURLFromRoute(&route, r.uploadProxyServiceName)
if routeURL != "" {
log.Info("Setting upload proxy url", "RouteURL", routeURL)
config.Status.UploadProxyURL = &routeURL
return nil
}
}
log.Info("No route found, setting to blank", "RouteURL", "")
config.Status.UploadProxyURL = nil
return nil
}
func (r *CDIConfigReconciler) reconcileStorageClass(config *cdiv1.CDIConfig) error {
log := r.log.WithName("CDIconfig").WithName("StorageClassReconcile")
storageClassList := &storagev1.StorageClassList{}
if err := r.client.List(context.TODO(), storageClassList, &client.ListOptions{}); err != nil {
return err
}
// Check config for scratch space class
if config.Spec.ScratchSpaceStorageClass != nil {
for _, storageClass := range storageClassList.Items {
if storageClass.Name == *config.Spec.ScratchSpaceStorageClass {
log.Info("Setting scratch space to override", "storageClass.Name", storageClass.Name)
config.Status.ScratchSpaceStorageClass = storageClass.Name
return nil
}
}
}
// Check for default storage class.
for _, storageClass := range storageClassList.Items {
if defaultClassValue, ok := storageClass.Annotations[AnnDefaultStorageClass]; ok {
if defaultClassValue == "true" {
log.Info("Setting scratch space to default", "storageClass.Name", storageClass.Name)
config.Status.ScratchSpaceStorageClass = storageClass.Name
return nil
}
}
}
log.Info("No default storage class found, setting scratch space to blank")
// No storage class found, blank it out.
config.Status.ScratchSpaceStorageClass = ""
return nil
}
func (r *CDIConfigReconciler) reconcileDefaultPodResourceRequirements(config *cdiv1.CDIConfig) error {
config.Status.DefaultPodResourceRequirements = &v1.ResourceRequirements{
Limits: map[v1.ResourceName]resource.Quantity{
v1.ResourceCPU: *resource.NewQuantity(0, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(0, resource.DecimalSI)},
Requests: map[v1.ResourceName]resource.Quantity{
v1.ResourceCPU: *resource.NewQuantity(0, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(0, resource.DecimalSI)},
}
if config.Spec.PodResourceRequirements != nil {
if config.Spec.PodResourceRequirements.Limits != nil {
if cpu, exist := config.Spec.PodResourceRequirements.Limits[v1.ResourceCPU]; exist {
config.Status.DefaultPodResourceRequirements.Limits[v1.ResourceCPU] = cpu
}
if memory, exist := config.Spec.PodResourceRequirements.Limits[v1.ResourceMemory]; exist {
config.Status.DefaultPodResourceRequirements.Limits[v1.ResourceMemory] = memory
}
}
if config.Spec.PodResourceRequirements.Requests != nil {
if cpu, exist := config.Spec.PodResourceRequirements.Requests[v1.ResourceCPU]; exist {
config.Status.DefaultPodResourceRequirements.Requests[v1.ResourceCPU] = cpu
}
if memory, exist := config.Spec.PodResourceRequirements.Requests[v1.ResourceMemory]; exist {
config.Status.DefaultPodResourceRequirements.Requests[v1.ResourceMemory] = memory
}
}
}
return nil
}
// createCDIConfig creates a new instance of the CDIConfig object if it doesn't exist already, and returns the existing one if found.
// It also sets the operator to be the owner of the CDIConfig object.
func (r *CDIConfigReconciler) createCDIConfig() (*cdiv1.CDIConfig, error) {
config := &cdiv1.CDIConfig{}
if err := r.uncachedClient.Get(context.TODO(), types.NamespacedName{Name: r.configName}, config); err != nil {
if errors.IsNotFound(err) {
config = MakeEmptyCDIConfigSpec(r.configName)
if err := operator.SetOwnerRuntime(r.uncachedClient, config); err != nil {
return nil, err
}
if err := r.client.Create(context.TODO(), config); err != nil {
if errors.IsAlreadyExists(err) {
config := &cdiv1.CDIConfig{}
if err := r.uncachedClient.Get(context.TODO(), types.NamespacedName{Name: r.configName}, config); err == nil {
return config, nil
}
return nil, err
}
return nil, err
}
} else {
return nil, err
}
}
return config, nil
}
// Init initializes a CDIConfig object.
func (r *CDIConfigReconciler) Init() error {
_, err := r.createCDIConfig()
return err
}
// NewConfigController creates a new instance of the config controller.
func NewConfigController(mgr manager.Manager, log logr.Logger, uploadProxyServiceName, configName string) (controller.Controller, error) {
uncachedClient, err := client.New(mgr.GetConfig(), client.Options{
Scheme: mgr.GetScheme(),
Mapper: mgr.GetRESTMapper(),
})
if err != nil {
return nil, err
}
reconciler := &CDIConfigReconciler{
client: mgr.GetClient(),
uncachedClient: uncachedClient,
scheme: mgr.GetScheme(),
log: log.WithName("config-controller"),
uploadProxyServiceName: uploadProxyServiceName,
configName: configName,
cdiNamespace: util.GetNamespace(),
}
configController, err := controller.New("config-controller", mgr, controller.Options{
Reconciler: reconciler,
})
if err != nil {
return nil, err
}
if err := addConfigControllerWatches(mgr, configController, reconciler.cdiNamespace, configName, uploadProxyServiceName); err != nil {
return nil, err
}
if err := reconciler.Init(); err != nil {
log.Error(err, "Unable to initalize CDIConfig")
}
log.Info("Initialized CDI Config object")
return configController, nil
}
// addConfigControllerWatches sets up the watches used by the config controller.
func addConfigControllerWatches(mgr manager.Manager, configController controller.Controller, cdiNamespace, configName, uploadProxyServiceName string) error {
// Add schemes.
if err := cdiv1.AddToScheme(mgr.GetScheme()); err != nil {
return err
}
if err := storagev1.AddToScheme(mgr.GetScheme()); err != nil {
return err
}
if err := extensionsv1beta1.AddToScheme(mgr.GetScheme()); err != nil {
return err
}
if err := routev1.AddToScheme(mgr.GetScheme()); err != nil {
return err
}
// Setup watches
if err := configController.Watch(&source.Kind{Type: &cdiv1.CDIConfig{}}, &handler.EnqueueRequestForObject{}); err != nil {
return err
}
err := configController.Watch(&source.Kind{Type: &storagev1.StorageClass{}}, &handler.EnqueueRequestsFromMapFunc{
ToRequests: handler.ToRequestsFunc(func(obj handler.MapObject) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
}),
})
if err != nil {
return err
}
err = configController.Watch(&source.Kind{Type: &extensionsv1beta1.Ingress{}}, &handler.EnqueueRequestsFromMapFunc{
ToRequests: handler.ToRequestsFunc(func(obj handler.MapObject) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
}),
}, predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return "" != getURLFromIngress(e.Object.(*extensionsv1beta1.Ingress), uploadProxyServiceName) &&
e.Object.(*extensionsv1beta1.Ingress).GetNamespace() == cdiNamespace
},
UpdateFunc: func(e event.UpdateEvent) bool {
return "" != getURLFromIngress(e.ObjectNew.(*extensionsv1beta1.Ingress), uploadProxyServiceName) &&
e.ObjectNew.(*extensionsv1beta1.Ingress).GetNamespace() == cdiNamespace
},
DeleteFunc: func(e event.DeleteEvent) bool {
return "" != getURLFromIngress(e.Object.(*extensionsv1beta1.Ingress), uploadProxyServiceName) &&
e.Object.(*extensionsv1beta1.Ingress).GetNamespace() == cdiNamespace
},
})
// check if routes exist
err = mgr.GetClient().List(context.TODO(), &routev1.RouteList{})
if meta.IsNoMatchError(err) {
return nil
}
if err != nil && !isErrCacheNotStarted(err) {
return err
}
err = configController.Watch(&source.Kind{Type: &routev1.Route{}}, &handler.EnqueueRequestsFromMapFunc{
ToRequests: handler.ToRequestsFunc(func(obj handler.MapObject) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
}),
}, predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return "" != getURLFromRoute(e.Object.(*routev1.Route), uploadProxyServiceName) &&
e.Object.(*routev1.Route).GetNamespace() == cdiNamespace
},
UpdateFunc: func(e event.UpdateEvent) bool {
return "" != getURLFromRoute(e.ObjectNew.(*routev1.Route), uploadProxyServiceName) &&
e.ObjectNew.(*routev1.Route).GetNamespace() == cdiNamespace
},
DeleteFunc: func(e event.DeleteEvent) bool {
return "" != getURLFromRoute(e.Object.(*routev1.Route), uploadProxyServiceName) &&
e.Object.(*routev1.Route).GetNamespace() == cdiNamespace
},
})
return nil
}
func getURLFromIngress(ing *extensionsv1beta1.Ingress, uploadProxyServiceName string) string {
if ing.Spec.Backend != nil {
if ing.Spec.Backend.ServiceName != uploadProxyServiceName {
return ""
}
return ing.Spec.Rules[0].Host
}
for _, rule := range ing.Spec.Rules {
if rule.HTTP == nil {
continue
}
for _, path := range rule.HTTP.Paths {
if path.Backend.ServiceName == uploadProxyServiceName {
if rule.Host != "" {
return rule.Host
}
}
}
}
return ""
}
func getURLFromRoute(route *routev1.Route, uploadProxyServiceName string) string {
if route.Spec.To.Name == uploadProxyServiceName {
if len(route.Status.Ingress) > 0 {
return route.Status.Ingress[0].Host
}
}
return ""
}