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How to use Get method of cronjob Package

Best Testkube code snippet using cronjob.Get

cronjob_controller.go

Source:cronjob_controller.go

...66func (r *CronJobReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {67	log := log.FromContext(ctx)68	// Load the CronJob by name69	var cronJob batchv1.CronJob70	if err := r.Get(ctx, req.NamespacedName, &cronJob); err != nil {71		log.Error(err, "unable to fetch CronJob")72		// we'll ignore not-found errors, since they can't be fixed by an immediate73		// requeue (we'll need to wait for a new notification), and we can get them74		// on deleted requests.75		return ctrl.Result{}, client.IgnoreNotFound(err)76	}77	// List all active jobs, and log the status78	var childJobs kbatch.JobList79	if err := r.List(ctx, &childJobs, client.InNamespace(req.Namespace), client.MatchingFields{jobOwnerKey: req.Name}); err != nil {80		log.Error(err, "unable to list child Jobs")81		return ctrl.Result{}, err82	}83	// Find the active list of jobs84	// Status should be able to be reconstituted from the state of the world, so itâs generally not a good idea to read85	// from the status of the root object. Instead, you should reconstruct it every run86	var activeJobs []*kbatch.Job87	var successfulJobs []*kbatch.Job88	var failedJobs []*kbatch.Job89	var mostRecentTime *time.Time90	isJobFinished := func(job *kbatch.Job) (bool, kbatch.JobConditionType) {91		for _, c := range job.Status.Conditions {92			if (c.Type == kbatch.JobComplete || c.Type == kbatch.JobFailed) && c.Status == corev1.ConditionTrue {93				return true, c.Type94			}95		}96		return false, ""97	}98	getScheduledTimeForJob := func(job *kbatch.Job) (*time.Time, error) {99		timeRaw := job.Annotations[scheduledTimeAnnotation]100		if len(timeRaw) == 0 {101			return nil, nil102		}103		timeParsed, err := time.Parse(time.RFC3339, timeRaw)104		if err != nil {105			return nil, err106		}107		return &timeParsed, nil108	}109	for i, job := range childJobs.Items {110		_, finishedType := isJobFinished(&job)111		switch finishedType {112		case "": // ongoing113			activeJobs = append(activeJobs, &childJobs.Items[i])114		case kbatch.JobFailed:115			failedJobs = append(failedJobs, &childJobs.Items[i])116		case kbatch.JobComplete:117			successfulJobs = append(successfulJobs, &childJobs.Items[i])118		}119		// We'll store the launch time in an annotation, so we'll reconstitute that from120		// the active jobs themselves.121		scheduledTimeForJob, err := getScheduledTimeForJob(&job)122		if err != nil {123			log.Error(err, "unable to parse schedule time for child job", "job", &job)124			continue125		}126		if scheduledTimeForJob != nil {127			if mostRecentTime == nil {128				mostRecentTime = scheduledTimeForJob129			} else if mostRecentTime.Before(*scheduledTimeForJob) {130				mostRecentTime = scheduledTimeForJob131			}132		}133	}134	if mostRecentTime != nil {135		cronJob.Status.LastScheduleTime = &metav1.Time{Time: *mostRecentTime}136	} else {137		cronJob.Status.LastScheduleTime = nil138	}139	cronJob.Status.Active = nil140	for _, activeJob := range activeJobs {141		jobRef, err := ref.GetReference(r.Scheme, activeJob)142		if err != nil {143			log.Error(err, "unable to make reference to active job", "job", activeJob)144			continue145		}146		cronJob.Status.Active = append(cronJob.Status.Active, *jobRef)147	}148	// log how many jobs we observed at a slightly higher logging level149	log.V(1).Info("job count", "active jobs", len(activeJobs), "successful jobs", len(successfulJobs), "failed jobs", len(failedJobs))150	// Using the date we've gathered, we'll update the status of our CRD.151	if err := r.Status().Update(ctx, &cronJob); err != nil {152		log.Error(err, "unable to update CronJob status")153		return ctrl.Result{}, err154	}155	// Clean up old jobs156	if cronJob.Spec.FailedJobsHistoryLimit != nil {157		sort.Slice(failedJobs, func(i, j int) bool {158			if failedJobs[i].Status.StartTime == nil {159				return failedJobs[j].Status.StartTime != nil160			}161			return failedJobs[i].Status.StartTime.Before(failedJobs[j].Status.StartTime)162		})163		for i, job := range failedJobs {164			if int32(i) >= int32(len(failedJobs))-*cronJob.Spec.FailedJobsHistoryLimit {165				break166			}167			if err := r.Delete(ctx, job, client.PropagationPolicy(metav1.DeletePropagationBackground)); client.IgnoreNotFound(err) != nil {168				log.Error(err, "unable to delete old failed job", "job", job)169			} else {170				log.V(0).Info("deleted old failed job", "job", job)171			}172		}173	}174	if cronJob.Spec.SuccessfulJobHistoryLimit != nil {175		sort.Slice(successfulJobs, func(i, j int) bool {176			if successfulJobs[i].Status.StartTime == nil {177				return successfulJobs[j].Status.StartTime != nil178			}179			return successfulJobs[i].Status.StartTime.Before(successfulJobs[j].Status.StartTime)180		})181		for i, job := range successfulJobs {182			if int32(i) >= int32(len(successfulJobs))-*cronJob.Spec.SuccessfulJobHistoryLimit {183				break184			}185			if err := r.Delete(ctx, job, client.PropagationPolicy(metav1.DeletePropagationBackground)); (err) != nil {186				log.Error(err, "unable to delete old successful job", "job", job)187			} else {188				log.V(0).Info("deleted old successful job", "job", job)189			}190		}191	}192	// Check if we're suspended193	if cronJob.Spec.Suspend != nil && *cronJob.Spec.Suspend {194		log.V(1).Info("cronjob suspended, skipping")195		return ctrl.Result{}, nil196	}197	// Get the next scheduled run198	// Calculate the next scheduled time199	getNextSchedule := func(cronJob *batchv1.CronJob, now time.Time) (lastMissed time.Time, next time.Time, err error) {200		sched, err := cron.ParseStandard(cronJob.Spec.Schedule)201		if err != nil {202			return time.Time{}, time.Time{}, fmt.Errorf("Unparseable schedule %q: %v", cronJob.Spec.Schedule, err)203		}204		var earliestTime time.Time205		if cronJob.Status.LastScheduleTime != nil {206			earliestTime = cronJob.Status.LastScheduleTime.Time207		} else {208			earliestTime = cronJob.ObjectMeta.CreationTimestamp.Time209		}210		if cronJob.Spec.StartingDeadlineSeconds != nil {211			// controller is not going to schedule anything below this point212			schedulingDeadline := now.Add(-time.Second * time.Duration(*cronJob.Spec.StartingDeadlineSeconds))213			if schedulingDeadline.After(earliestTime) {214				earliestTime = schedulingDeadline215			}216		}217		if earliestTime.After(now) {218			return time.Time{}, sched.Next(now), nil219		}220		starts := 0221		for t := sched.Next(earliestTime); !t.After(now); t = sched.Next(t) {222			lastMissed = t223			starts++224			if starts > 100 {225				// We can't get the most recent times so just return an empty slice226				return time.Time{}, time.Time{}, fmt.Errorf("too many missed start times (> 100). Set or decrease .spec.startingDeadlineSeconds or check clock skew")227			}228		}229		return lastMissed, sched.Next(now), nil230	}231	// +kubebuilder:docs-gen:collapse=getNextSchedule232	// figure out the next times that we need to create233	// jobs at (or anything we missed).234	missedRun, nextRun, err := getNextSchedule(&cronJob, r.Now())235	if err != nil {236		log.Error(err, "unable to figure out CronJob schedule")237		// we don't really care about requeuing until we get an update that238		// fixes the schedule, so don't return an error239		return ctrl.Result{}, nil240	}241	// Prep our eventual request to requeue until the next job242	scheduledResult := ctrl.Result{RequeueAfter: nextRun.Sub(r.Now())} // save this so we can re-use it elsewhere243	log = log.WithValues("now", r.Now(), "next run", nextRun)244	// Run a new job if it's on schedule245	if missedRun.IsZero() {246		log.V(1).Info("no upcoming scheduled times, sleeping until next")247		return scheduledResult, nil248	}249	// make sure we're not too late to start the run250	log = log.WithValues("current run", missedRun)251	tooLate := false252	if cronJob.Spec.StartingDeadlineSeconds != nil {253		tooLate = missedRun.Add(time.Duration(*cronJob.Spec.StartingDeadlineSeconds) * time.Second).Before(r.Now())254	}255	if tooLate {256		log.V(1).Info("missed starting deadline for last run, sleeping till next")257		// TODO(directxman12): events258		return scheduledResult, nil259	}260	// figure out how to run this job -- concurrency policy might forbid us from running261	// multiple at the same time...262	if cronJob.Spec.ConcurrencyPolicy == batchv1.ForbidConcurrent && len(activeJobs) > 0 {263		log.V(1).Info("concurrency policy blocks concurrent runs, skipping", "num active", len(activeJobs))264		return scheduledResult, nil265	}266	// ...or instruct us to replace existing ones...267	if cronJob.Spec.ConcurrencyPolicy == batchv1.ReplaceConcurrent {268		for _, activeJob := range activeJobs {269			// we don't care if the job was already deleted270			if err := r.Delete(ctx, activeJob, client.PropagationPolicy(metav1.DeletePropagationBackground)); client.IgnoreNotFound(err) != nil {271				log.Error(err, "unable to delete active job", "job", activeJob)272				return ctrl.Result{}, err273			}274		}275	}276	// construct a job based on our CronJob's template.277	constructJobForCronJob := func(cronJob *batchv1.CronJob, scheduledTime time.Time) (*kbatch.Job, error) {278		// We want job names for a given nominal start time to have a deterministic name to avoid the same job being created twice279		name := fmt.Sprintf("%s-%d", cronJob.Name, scheduledTime.Unix())280		job := &kbatch.Job{281			ObjectMeta: metav1.ObjectMeta{282				Labels:      make(map[string]string),283				Annotations: make(map[string]string),284				Name:        name,285				Namespace:   cronJob.Namespace,286			},287			Spec: *cronJob.Spec.JobTemplate.Spec.DeepCopy(),288		}289		for k, v := range cronJob.Spec.JobTemplate.Annotations {290			job.Annotations[k] = v291		}292		job.Annotations[scheduledTimeAnnotation] = scheduledTime.Format(time.RFC3339)293		for k, v := range cronJob.Spec.JobTemplate.Labels {294			job.Labels[k] = v295		}296		if err := ctrl.SetControllerReference(cronJob, job, r.Scheme); err != nil {297			return nil, err298		}299		return job, nil300	}301	// +kubebuilder:docs-gen:collapse=constructJobForCronJob302	// actually make the job...303	job, err := constructJobForCronJob(&cronJob, missedRun)304	if err != nil {305		log.Error(err, "unable to construct job from template")306		// don't bother requeuing until we get a change to the spec307		return scheduledResult, nil308	}309	// ...and create it on the cluster310	if err := r.Create(ctx, job); err != nil {311		log.Error(err, "unable to create Job for CronJob", "job", job)312		return ctrl.Result{}, err313	}314	log.V(1).Info("created Job for CronJob run", "job", job)315	// Requeue when we either see a running job316	return scheduledResult, nil317}318var (319	jobOwnerKey = ".metadata.controller"320	apiGVStr    = batchv1.GroupVersion.String()321)322func (r *CronJobReconciler) SetupWithManager(mgr ctrl.Manager) error {323	// set up a real clock, since we're not in a test324	if r.Clock == nil {325		r.Clock = realClock{}326	}327	if err := mgr.GetFieldIndexer().IndexField(context.Background(), &kbatch.Job{}, jobOwnerKey, func(rawObj client.Object) []string {328		// grab the job object, extract the owner...329		job := rawObj.(*kbatch.Job)330		owner := metav1.GetControllerOf(job)331		if owner == nil {332			return nil333		}334		// ...make sure it's a CronJob...335		if owner.APIVersion != apiGVStr || owner.Kind != "CronJob" {336			return nil337		}338		// ...and if so, return it339		return []string{owner.Name}340	}); err != nil {341		return err342	}343	return ctrl.NewControllerManagedBy(mgr).344		For(&batchv1.CronJob{})....

cronjob.go

Source:cronjob.go

...18	watch "k8s.io/apimachinery/pkg/watch"19	scheme "k8s.io/client-go/kubernetes/scheme"20	rest "k8s.io/client-go/rest"21)22// CronJobsGetter has a method to return a CronJobInterface.23// A group's client should implement this interface.24type CronJobsGetter interface {25	CronJobs(namespace string) CronJobInterface26}27// CronJobInterface has methods to work with CronJob resources.28type CronJobInterface interface {29	Create(*v2alpha1.CronJob) (*v2alpha1.CronJob, error)30	Update(*v2alpha1.CronJob) (*v2alpha1.CronJob, error)31	UpdateStatus(*v2alpha1.CronJob) (*v2alpha1.CronJob, error)32	Delete(name string, options *v1.DeleteOptions) error33	DeleteCollection(options *v1.DeleteOptions, listOptions v1.ListOptions) error34	Get(name string, options v1.GetOptions) (*v2alpha1.CronJob, error)35	List(opts v1.ListOptions) (*v2alpha1.CronJobList, error)36	Watch(opts v1.ListOptions) (watch.Interface, error)37	Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v2alpha1.CronJob, err error)38	CronJobExpansion39}40// cronJobs implements CronJobInterface41type cronJobs struct {42	client rest.Interface43	ns     string44}45// newCronJobs returns a CronJobs46func newCronJobs(c *BatchV2alpha1Client, namespace string) *cronJobs {47	return &cronJobs{48		client: c.RESTClient(),49		ns:     namespace,50	}51}52// Get takes name of the cronJob, and returns the corresponding cronJob object, and an error if there is any.53func (c *cronJobs) Get(name string, options v1.GetOptions) (result *v2alpha1.CronJob, err error) {54	result = &v2alpha1.CronJob{}55	err = c.client.Get().56		Namespace(c.ns).57		Resource("cronjobs").58		Name(name).59		VersionedParams(&options, scheme.ParameterCodec).60		Do().61		Into(result)62	return63}64// List takes label and field selectors, and returns the list of CronJobs that match those selectors.65func (c *cronJobs) List(opts v1.ListOptions) (result *v2alpha1.CronJobList, err error) {66	result = &v2alpha1.CronJobList{}67	err = c.client.Get().68		Namespace(c.ns).69		Resource("cronjobs").70		VersionedParams(&opts, scheme.ParameterCodec).71		Do().72		Into(result)73	return74}75// Watch returns a watch.Interface that watches the requested cronJobs.76func (c *cronJobs) Watch(opts v1.ListOptions) (watch.Interface, error) {77	opts.Watch = true78	return c.client.Get().79		Namespace(c.ns).80		Resource("cronjobs").81		VersionedParams(&opts, scheme.ParameterCodec).82		Watch()83}84// Create takes the representation of a cronJob and creates it.  Returns the server's representation of the cronJob, and an error, if there is any.85func (c *cronJobs) Create(cronJob *v2alpha1.CronJob) (result *v2alpha1.CronJob, err error) {86	result = &v2alpha1.CronJob{}87	err = c.client.Post().88		Namespace(c.ns).89		Resource("cronjobs").90		Body(cronJob).91		Do().92		Into(result)...

Get

Using AI Code Generation

1import (2func main() {3    c := cron.New()4    c.AddFunc("*/1 * * * *", func() { fmt.Println("Every 1 minute") })5    c.AddFunc("*/2 * * * *", func() { fmt.Println("Every 2 minute") })6    c.AddFunc("*/3 * * * *", func() { fmt.Println("Every 3 minute") })7    c.AddFunc("*/4 * * * *", func() { fmt.P

Get

Using AI Code Generation

1import (2func main() {3    c := cron.New()4    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })5    c.AddFunc("*/5 * * * *", func() { fmt.Println("Every 5 minutes") })6    c.AddFunc("0 */5 * * *", func() { fmt.Println("Every 5 minutes on the hour") })7    c.AddFunc("0 0 1 * *", func() { fmt.Println("Every day

Get

Using AI Code Generation

1import (2func main() {3    c := cron.New()4    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })5    c.Start()6    select {}7}8import (9func main() {10    c := cron.New()11    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })12    c.Start()13    select {}14}15import (16func main() {17    c := cron.New()18    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })19    c.Start()20    select {}21}22import (23func main() {24    c := cron.New()25    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })26    c.Start()27    select {}28}29import (30func main() {31    c := cron.New()32    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })33    c.Start()34    select {}35}36import (37func main() {38    c := cron.New()39    c.AddFunc("* * * * *", func() { fmt.Println("Every minute on the minute") })40    c.Start()41    select {}42}43import (44func main() {

Get

Using AI Code Generation

1import (2func main() {3	c := cron.New()4	c.AddFunc("0 30 11 * * *", func() { fmt.Println("Every day at 11:30am") })5	c.AddFunc("@hourly", func() { fmt.Println("Every hour") })6	c.AddFunc("@every 1h30m", func() { fmt.Println("Every hour thirty") })7	c.Start()8}

Get

Using AI Code Generation

1import (2func main() {3    c := cron.New()4    c.AddFunc("* * * * *", func() { fmt.Println("Every second") })5    c.AddFunc("@hourly", func() { fmt.Println("Every hour") })6    c.AddFunc("@every 1h30m", func() { fmt.Println("Every hour thirty") })7    c.Start()8    time.Sleep(5 * time.Minute)

Get

Using AI Code Generation

1import ( 2func main() {3    c := cron.New()4    c.AddFunc("*/1 * * * *", func() { fmt.Println("Every hour on the half hour") })5    c.Start()6    select {}7}

Get

Using AI Code Generation

1import (2func main() {3    c := cron.New()4    c.AddFunc("0 0 12 * * ?", func() { fmt.Println("Every day at noon") })5    c.AddFunc("@hourly", func() { fmt.Println("Every hour") })6    c.AddFunc("@every 1h30m", func() { fmt.Println("Every hour thirty") })7    c.Start()8    time.Sleep(10 * time.Second)9    c.Stop()10}

Get

Using AI Code Generation

1import (2func main() {3 cronjob.Get()4 fmt.Println(cronjob)5}6{0xc0000b0000 0xc0000b4000}

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