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config-controller.go
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config-controller.go
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package controller
import (
"context"
"reflect"
"regexp"
"github.com/go-logr/logr"
ocpconfigv1 "github.com/openshift/api/config/v1"
routev1 "github.com/openshift/api/route/v1"
v1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"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"
cdiv1 "kubevirt.io/containerized-data-importer/pkg/apis/core/v1beta1"
"kubevirt.io/containerized-data-importer/pkg/common"
"kubevirt.io/containerized-data-importer/pkg/operator"
"kubevirt.io/containerized-data-importer/pkg/util"
)
// AnnConfigAuthority is the annotation specifying a resource as the CDIConfig authority
const (
AnnConfigAuthority = "cdi.kubevirt.io/configAuthority"
defaultCPULimit = "750m"
defaultMemLimit = "600M"
defaultCPURequest = "100m"
defaultMemRequest = "60M"
)
// 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
installerLabels map[string]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(_ context.Context, 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()
config.Status.Preallocation = config.Spec.Preallocation != nil && *config.Spec.Preallocation
// ignore whatever is in config spec and set to operator view
if err := r.setOperatorParams(config); err != nil {
return reconcile.Result{}, err
}
if err := r.reconcileUploadProxyURL(config); 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 err := r.reconcileFilesystemOverhead(config); err != nil {
return reconcile.Result{}, err
}
if err := r.reconcileImportProxy(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) setOperatorParams(config *cdiv1.CDIConfig) error {
cdiCR, err := GetActiveCDI(r.client)
if err != nil {
return err
}
if cdiCR == nil {
return nil
}
if _, ok := cdiCR.Annotations[AnnConfigAuthority]; !ok {
return nil
}
if cdiCR.Spec.Config == nil {
config.Spec = cdiv1.CDIConfigSpec{}
} else {
config.Spec = *cdiCR.Spec.Config
}
return nil
}
func (r *CDIConfigReconciler) reconcileUploadProxyURL(config *cdiv1.CDIConfig) error {
log := r.log.WithName("CDIconfig").WithName("UploadProxyReconcile")
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 := &networkingv1.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 {
cpuLimit, _ := resource.ParseQuantity(defaultCPULimit)
memLimit, _ := resource.ParseQuantity(defaultMemLimit)
cpuRequest, _ := resource.ParseQuantity(defaultCPURequest)
memRequest, _ := resource.ParseQuantity(defaultMemRequest)
config.Status.DefaultPodResourceRequirements = &v1.ResourceRequirements{
Limits: map[v1.ResourceName]resource.Quantity{
v1.ResourceCPU: cpuLimit,
v1.ResourceMemory: memLimit,
},
Requests: map[v1.ResourceName]resource.Quantity{
v1.ResourceCPU: cpuRequest,
v1.ResourceMemory: memRequest,
},
}
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
}
func (r *CDIConfigReconciler) reconcileFilesystemOverhead(config *cdiv1.CDIConfig) error {
var globalOverhead cdiv1.Percent = common.DefaultGlobalOverhead
var perStorageConfig = make(map[string]cdiv1.Percent)
log := r.log.WithName("CDIconfig").WithName("FilesystemOverhead")
// Avoid nil maps and segfaults for the initial case, where filesystemOverhead
// is nil for both the spec and the status.
if config.Status.FilesystemOverhead == nil {
log.Info("No filesystem overhead found in status, initializing to defaults")
config.Status.FilesystemOverhead = &cdiv1.FilesystemOverhead{
Global: globalOverhead,
StorageClass: make(map[string]cdiv1.Percent),
}
}
if config.Spec.FilesystemOverhead != nil {
if valid, _ := validOverhead(config.Spec.FilesystemOverhead.Global); valid {
globalOverhead = config.Spec.FilesystemOverhead.Global
}
if config.Spec.FilesystemOverhead.StorageClass != nil {
perStorageConfig = config.Spec.FilesystemOverhead.StorageClass
}
}
// Set status global overhead
config.Status.FilesystemOverhead.Global = globalOverhead
// Set status per-storageClass overhead
storageClassList := &storagev1.StorageClassList{}
if err := r.client.List(context.TODO(), storageClassList, &client.ListOptions{}); err != nil {
return err
}
config.Status.FilesystemOverhead.StorageClass = make(map[string]cdiv1.Percent)
for _, storageClass := range storageClassList.Items {
storageClassName := storageClass.GetName()
storageClassNameOverhead, found := perStorageConfig[storageClassName]
if found {
valid, err := validOverhead(storageClassNameOverhead)
if !valid {
return err
}
config.Status.FilesystemOverhead.StorageClass[storageClassName] = storageClassNameOverhead
} else {
config.Status.FilesystemOverhead.StorageClass[storageClassName] = globalOverhead
}
}
return nil
}
func validOverhead(overhead cdiv1.Percent) (bool, error) {
return regexp.MatchString(`^(0(?:\.\d{1,3})?|1)$`, string(overhead))
}
// 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
}
util.SetRecommendedLabels(config, r.installerLabels, "cdi-controller")
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
}
func (r *CDIConfigReconciler) reconcileImportProxy(config *cdiv1.CDIConfig) error {
log := r.log.WithName("CDIconfig").WithName("ImportProxyReconcile")
config.Status.ImportProxy = config.Spec.ImportProxy
// Avoid nil pointers and segfaults for the initial case, where ImportProxy is nil for both the spec and the status.
if config.Status.ImportProxy == nil {
config.Status.ImportProxy = &cdiv1.ImportProxy{
HTTPProxy: new(string),
HTTPSProxy: new(string),
NoProxy: new(string),
TrustedCAProxy: new(string),
}
// Try Openshift cluster wide proxy only if the CDIConfig default config is empty
clusterWideProxy, err := GetClusterWideProxy(r.client)
if err != nil {
log.V(3).Info(err.Error())
return nil
}
config.Status.ImportProxy.HTTPProxy = &clusterWideProxy.Status.HTTPProxy
config.Status.ImportProxy.HTTPSProxy = &clusterWideProxy.Status.HTTPSProxy
config.Status.ImportProxy.NoProxy = &clusterWideProxy.Status.NoProxy
if clusterWideProxy.Spec.TrustedCA.Name != "" {
config.Status.ImportProxy.TrustedCAProxy = &clusterWideProxy.Spec.TrustedCA.Name
r.reconcileImportProxyCAConfigMap(config, clusterWideProxy)
}
}
return nil
}
// Create/Update a configmap with the CA certificates in the controllor context with the cluster-wide proxy CA certificates to be used by the importer pod
func (r *CDIConfigReconciler) reconcileImportProxyCAConfigMap(config *cdiv1.CDIConfig, proxy *ocpconfigv1.Proxy) error {
cmName := proxy.Spec.TrustedCA.Name
if cmName == "" {
// Using the default cluster-wide proxy CA certificates configmap name
cmName = ClusterWideProxyConfigMapName
}
clusterWideProxyConfigMap := &v1.ConfigMap{}
if err := r.client.Get(context.TODO(), types.NamespacedName{Name: cmName, Namespace: ClusterWideProxyConfigMapNameSpace}, clusterWideProxyConfigMap); err == nil {
// Copy the cluster-wide proxy CA certificates to the importer pod proxy CA certificates configMap
if certBytes, ok := clusterWideProxyConfigMap.Data[ClusterWideProxyConfigMapKey]; ok {
configMap := &v1.ConfigMap{}
if err := r.client.Get(context.TODO(), types.NamespacedName{Name: common.ImportProxyConfigMapName, Namespace: r.cdiNamespace}, configMap); errors.IsNotFound(err) {
proxyConfigMap := r.createProxyConfigMap(certBytes)
util.SetRecommendedLabels(proxyConfigMap, r.installerLabels, "cdi-controller")
if err := r.client.Create(context.TODO(), proxyConfigMap); err != nil {
return err
}
return nil
}
if configMap != nil {
configMap.Data[common.ImportProxyConfigMapKey] = certBytes
if err := r.client.Update(context.TODO(), configMap); err != nil {
return err
}
}
}
}
return nil
}
func (r *CDIConfigReconciler) createProxyConfigMap(certBytes string) *v1.ConfigMap {
return &v1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{
Name: common.ImportProxyConfigMapName,
Namespace: r.cdiNamespace},
Data: map[string]string{common.ImportProxyConfigMapKey: certBytes},
}
}
// 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, installerLabels map[string]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(),
installerLabels: installerLabels,
}
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, log); 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, log logr.Logger) 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 := networkingv1.AddToScheme(mgr.GetScheme()); err != nil {
return err
}
if err := routev1.Install(mgr.GetScheme()); err != nil {
return err
}
if err := ocpconfigv1.Install(mgr.GetScheme()); err != nil {
return err
}
// Setup watches
if err := watchCDIConfig(configController, configName); err != nil {
return err
}
if err := watchStorageClass(configController, configName); err != nil {
return err
}
if err := watchIngress(configController, cdiNamespace, configName, uploadProxyServiceName); err != nil {
return err
}
if err := watchRoutes(mgr, configController, cdiNamespace, configName, uploadProxyServiceName); err != nil {
return err
}
if err := watchClusterProxy(mgr, configController, configName); err != nil {
return err
}
return nil
}
func watchCDIConfig(configController controller.Controller, configName string) error {
if err := configController.Watch(&source.Kind{Type: &cdiv1.CDIConfig{}}, &handler.EnqueueRequestForObject{}); err != nil {
return err
}
return configController.Watch(&source.Kind{Type: &cdiv1.CDI{}}, handler.EnqueueRequestsFromMapFunc(
func(client.Object) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
},
))
}
func watchStorageClass(configController controller.Controller, configName string) error {
return configController.Watch(&source.Kind{Type: &storagev1.StorageClass{}}, handler.EnqueueRequestsFromMapFunc(
func(client.Object) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
},
))
}
func watchIngress(configController controller.Controller, cdiNamespace, configName, uploadProxyServiceName string) error {
err := configController.Watch(&source.Kind{Type: &networkingv1.Ingress{}}, handler.EnqueueRequestsFromMapFunc(
func(client.Object) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
}),
predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return "" != getURLFromIngress(e.Object.(*networkingv1.Ingress), uploadProxyServiceName) &&
e.Object.(*networkingv1.Ingress).GetNamespace() == cdiNamespace
},
UpdateFunc: func(e event.UpdateEvent) bool {
return "" != getURLFromIngress(e.ObjectNew.(*networkingv1.Ingress), uploadProxyServiceName) &&
e.ObjectNew.(*networkingv1.Ingress).GetNamespace() == cdiNamespace
},
DeleteFunc: func(e event.DeleteEvent) bool {
return "" != getURLFromIngress(e.Object.(*networkingv1.Ingress), uploadProxyServiceName) &&
e.Object.(*networkingv1.Ingress).GetNamespace() == cdiNamespace
},
})
return err
}
// we only watch the route obj if they exist, i.e., if it is an OpenShift cluster
func watchRoutes(mgr manager.Manager, configController controller.Controller, cdiNamespace, configName, uploadProxyServiceName string) error {
err := mgr.GetClient().List(context.TODO(), &routev1.RouteList{})
if !meta.IsNoMatchError(err) {
if err == nil || isErrCacheNotStarted(err) {
err := configController.Watch(&source.Kind{Type: &routev1.Route{}}, handler.EnqueueRequestsFromMapFunc(
func(client.Object) []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 err
}
return err
}
return nil
}
// we only watch the cluster-wide proxy obj if they exist, i.e., if it is an OpenShift cluster
func watchClusterProxy(mgr manager.Manager, configController controller.Controller, configName string) error {
err := mgr.GetClient().List(context.TODO(), &ocpconfigv1.ProxyList{})
if !meta.IsNoMatchError(err) {
if err == nil || isErrCacheNotStarted(err) {
return configController.Watch(&source.Kind{Type: &ocpconfigv1.Proxy{}}, handler.EnqueueRequestsFromMapFunc(
func(client.Object) []reconcile.Request {
return []reconcile.Request{{
NamespacedName: types.NamespacedName{Name: configName},
}}
},
))
}
return err
}
return nil
}
func getURLFromIngress(ing *networkingv1.Ingress, uploadProxyServiceName string) string {
if ing.Spec.DefaultBackend != nil && ing.Spec.DefaultBackend.Service != nil {
if ing.Spec.DefaultBackend.Service.Name != 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.Service != nil && path.Backend.Service.Name == 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 ""
}