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util.go
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util.go
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package util
import (
"context"
"errors"
"fmt"
"os"
"strings"
"github.com/go-logr/logr"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/equality"
kerrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
n "github.com/hazelcast/hazelcast-platform-operator/internal/naming"
)
func CreateOrUpdateForce(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error) {
opResult, err := controllerutil.CreateOrUpdate(ctx, c, obj, f)
if kerrors.IsAlreadyExists(err) {
// Ignore "already exists" error.
// Inside createOrUpdate() there's a race condition between Get() and Create(), so this error is expected from time to time.
return opResult, nil
}
if kerrors.IsInvalid(err) {
// try hard replace
err := c.Delete(ctx, obj)
if err != nil {
return opResult, err
}
return controllerutil.CreateOrUpdate(ctx, c, obj, f)
}
return opResult, err
}
func CreateOrUpdate(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error) {
opResult, err := controllerutil.CreateOrUpdate(ctx, c, obj, f)
if kerrors.IsAlreadyExists(err) {
// Ignore "already exists" error.
// Inside createOrUpdate() there's a race condition between Get() and Create(), so this error is expected from time to time.
return opResult, nil
}
return opResult, err
}
func Update(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error) {
key := client.ObjectKeyFromObject(obj)
existing := obj.DeepCopyObject() //nolint
if err := mutate(f, key, obj); err != nil {
return controllerutil.OperationResultNone, err
}
if equality.Semantic.DeepEqual(existing, obj) {
return controllerutil.OperationResultNone, nil
}
if err := c.Update(ctx, obj); err != nil {
return controllerutil.OperationResultNone, err
}
return controllerutil.OperationResultUpdated, nil
}
// mutate wraps a MutateFn and applies validation to its result.
func mutate(f controllerutil.MutateFn, key client.ObjectKey, obj client.Object) error {
if err := f(); err != nil {
return err
}
if newKey := client.ObjectKeyFromObject(obj); key != newKey {
return fmt.Errorf("MutateFn cannot mutate object name and/or object namespace")
}
return nil
}
func CreateOrGet(ctx context.Context, c client.Client, key client.ObjectKey, obj client.Object) error {
err := c.Get(ctx, key, obj)
if err != nil {
if !kerrors.IsNotFound(err) {
return err
} else {
return c.Create(ctx, obj)
}
} else {
return nil
}
}
func CheckIfRunning(ctx context.Context, cl client.Client, statefulSet *appsv1.StatefulSet, expectedReplicas int32) (bool, error) {
if isStatefulSetReady(statefulSet, expectedReplicas) {
return true, nil
}
if err := checkPodsForFailure(ctx, cl, statefulSet); err != nil {
return false, err
}
return false, nil
}
func AddFinalizer(ctx context.Context, c client.Client, object client.Object, logger logr.Logger) error {
if !controllerutil.ContainsFinalizer(object, n.Finalizer) && object.GetDeletionTimestamp() == nil {
controllerutil.AddFinalizer(object, n.Finalizer)
err := c.Update(ctx, object)
if err != nil {
return err
}
logger.V(DebugLevel).Info("Finalizer added into custom resource successfully")
}
return nil
}
func isStatefulSetReady(sts *appsv1.StatefulSet, expectedReplicas int32) bool {
allUpdated := expectedReplicas == sts.Status.UpdatedReplicas
allReady := expectedReplicas == sts.Status.ReadyReplicas
atExpectedGeneration := sts.Generation == sts.Status.ObservedGeneration
return allUpdated && allReady && atExpectedGeneration
}
func checkPodsForFailure(ctx context.Context, cl client.Client, sts *appsv1.StatefulSet) error {
pods, err := listPods(ctx, cl, sts)
if err != nil {
return err
}
errs := make(PodErrors, 0, pods.Size())
for _, pod := range pods.Items {
phase := pod.Status.Phase
if phase == corev1.PodFailed || phase == corev1.PodUnknown {
errs = append(errs, NewPodError(&pod))
} else if hasPodFailedWhileWaiting(&pod) {
errs = append(errs, errorsFromPendingPod(&pod)...)
}
}
if len(errs) == 0 {
return nil
}
return errs
}
// AsPodErrors tries to transform err to PodErrors and return it with true.
// If it is not possible nil and false is returned.
func AsPodErrors(err error) (PodErrors, bool) {
if err == nil {
return nil, false
}
t := new(PodErrors)
if errors.As(err, t) {
return *t, true
}
return nil, false
}
func hasPodFailedWhileWaiting(pod *corev1.Pod) bool {
for _, status := range pod.Status.ContainerStatuses {
if status.State.Waiting != nil {
switch status.State.Waiting.Reason {
case "ContainerCreating", "PodInitializing", "":
default:
return true
}
}
}
return false
}
func errorsFromPendingPod(pod *corev1.Pod) PodErrors {
podErrors := make(PodErrors, 0, len(pod.Spec.Containers))
for _, status := range pod.Status.ContainerStatuses {
if status.State.Waiting != nil {
switch status.State.Waiting.Reason {
case "ContainerCreating", "PodInitializing", "":
default:
podErrors = append(podErrors, NewPodErrorWithContainerStatus(pod, status))
}
}
}
return podErrors
}
func listPods(ctx context.Context, cl client.Client, sts *appsv1.StatefulSet) (*corev1.PodList, error) {
pods := &corev1.PodList{}
podLabels := sts.Spec.Template.Labels
if err := cl.List(ctx, pods, client.InNamespace(sts.Namespace), client.MatchingLabels(podLabels)); err != nil {
return nil, err
}
return pods, nil
}
func IsEnterprise(repo string) bool {
path := strings.Split(repo, "/")
if len(path) == 0 {
return false
}
return strings.HasSuffix(path[len(path)-1], "-enterprise")
}
func IsPhoneHomeEnabled() bool {
phEnabled, found := os.LookupEnv(n.PhoneHomeEnabledEnv)
return !found || phEnabled == "true"
}
func IsDeveloperModeEnabled() bool {
value := os.Getenv(n.DeveloperModeEnabledEnv)
return strings.ToLower(value) == "true"
}
type ExternalAddresser interface {
metav1.Object
ExternalAddressEnabled() bool
}
func ListRelatedServices(ctx context.Context, cli client.Client, cr ExternalAddresser) (*corev1.ServiceList, error) {
nsMatcher := client.InNamespace(cr.GetNamespace())
labelMatcher := client.MatchingLabels(Labels(cr))
var svcList corev1.ServiceList
if err := cli.List(ctx, &svcList, nsMatcher, labelMatcher); err != nil {
return nil, err
}
return &svcList, nil
}
func Labels(cr ExternalAddresser) map[string]string {
return map[string]string{
n.ApplicationNameLabel: n.Hazelcast,
n.ApplicationInstanceNameLabel: cr.GetName(),
n.ApplicationManagedByLabel: n.OperatorName,
}
}
func GetExternalAddressesForMC(
ctx context.Context,
cli client.Client,
cr ExternalAddresser,
logger logr.Logger,
) []string {
if !cr.ExternalAddressEnabled() {
return nil
}
svc, err := getDiscoveryService(ctx, cli, cr)
if err != nil {
logger.Error(err, "Could not get the service")
return nil
}
if svc.Spec.Type != corev1.ServiceTypeLoadBalancer {
logger.Error(errors.New("unexpected service type"), "Service type is not LoadBalancer")
return nil
}
externalAddrs := make([]string, 0, len(svc.Status.LoadBalancer.Ingress)*len(svc.Spec.Ports))
for _, ingress := range svc.Status.LoadBalancer.Ingress {
addr := GetLoadBalancerAddress(&ingress)
if addr == "" {
continue
}
for _, port := range svc.Spec.Ports {
externalAddrs = append(externalAddrs, fmt.Sprintf("%s:%d", addr, port.Port))
}
}
if len(externalAddrs) == 0 {
logger.Info("Load Balancer external IP is not ready.")
}
return externalAddrs
}
func getDiscoveryService(ctx context.Context, cli client.Client, cr ExternalAddresser) (*corev1.Service, error) {
svc := corev1.Service{}
if err := cli.Get(ctx, types.NamespacedName{Namespace: cr.GetNamespace(), Name: cr.GetName()}, &svc); err != nil {
return nil, err
}
return &svc, nil
}
func GetExternalAddress(svc *corev1.Service) string {
for _, ingress := range svc.Status.LoadBalancer.Ingress {
addr := GetLoadBalancerAddress(&ingress)
if addr != "" {
return addr
}
}
return ""
}
func GetLoadBalancerAddress(lb *corev1.LoadBalancerIngress) string {
if lb.IP != "" {
return lb.IP
}
if lb.Hostname != "" {
return lb.Hostname
}
return ""
}
func DeleteObject(ctx context.Context, c client.Client, obj client.Object) error {
err := c.Delete(ctx, obj, client.PropagationPolicy(metav1.DeletePropagationForeground))
if err != nil && !kerrors.IsNotFound(err) {
return err
}
return nil
}
func IsApplied(obj client.Object) bool {
_, ok := obj.GetAnnotations()[n.LastAppliedSpecAnnotation]
return ok
}
func IsSuccessfullyApplied(obj client.Object) bool {
_, ok := obj.GetAnnotations()[n.LastSuccessfulSpecAnnotation]
return ok
}
func NodeDiscoveryEnabled() bool {
watching, found := os.LookupEnv(n.HazelcastNodeDiscoveryEnabledEnv)
if !found {
return true
}
return watching == "true"
}
func EnrichServiceNodePorts(newPorts []corev1.ServicePort, existing []corev1.ServicePort) []corev1.ServicePort {
existingMap := map[string]corev1.ServicePort{}
for _, port := range existing {
existingMap[port.Name] = port
}
for i := range newPorts {
if val, ok := existingMap[newPorts[i].Name]; ok {
newPorts[i].NodePort = val.NodePort
}
}
return newPorts
}