controllerutils

package
v1.38.1 Latest Latest
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 Go to latest Published: Dec 21, 2021 License: Apache-2.0, BSD-2-Clause, MIT, + 1 more Imports: 33 Imported by: 15

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	// Now is a function for returning the current time.
	Now = time.Now
	// RandomDuration is a function for returning a random duration.
	RandomDuration = utils.RandomDuration
)

Functions

func AddTasks 

func AddTasks(annotations map[string]string, tasksToAdd ...string)

AddTasks adds tasks to the ShootTasks annotation of the passed map.

func BackupBucketFilterFunc 

func BackupBucketFilterFunc(seedName string) func(obj interface{}) bool

BackupBucketFilterFunc returns a filtering func for the seeds.

func BackupEntryFilterFunc 

func BackupEntryFilterFunc(seedName string) func(obj interface{}) bool

BackupEntryFilterFunc returns a filtering func for the seeds.

func BackupEntryIsManagedByThisGardenlet added in v1.22.0 

func BackupEntryIsManagedByThisGardenlet(backupEntry *gardencorev1beta1.BackupEntry, gc *config.GardenletConfiguration) bool

BackupEntryIsManagedByThisGardenlet checks if the given BackupEntry is managed by this gardenlet by comparing it with the seed name from the GardenletConfiguration.

func BastionFilterFunc added in v1.23.0 

func BastionFilterFunc(seedName string) func(obj interface{}) bool

BastionFilterFunc returns a filtering func for the seeds.

func BastionIsManagedByThisGardenlet added in v1.25.0 

func BastionIsManagedByThisGardenlet(bastion *operationsv1alpha1.Bastion, gc *config.GardenletConfiguration) bool

BastionIsManagedByThisGardenlet checks if the given Bastion is managed by this gardenlet by comparing it with the seed name from the GardenletConfiguration.

func ControllerInstallationFilterFunc 

func ControllerInstallationFilterFunc(seedName string) func(obj interface{}) bool

ControllerInstallationFilterFunc returns a filtering func for the seeds.

func CreateOrGetAndMergePatch added in v1.25.0 

func CreateOrGetAndMergePatch(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error)

CreateOrGetAndMergePatch creates or gets and patches (using a merge patch) the given object in the Kubernetes cluster.

The MutateFn is called regardless of creating or patching an object.

It returns the executed operation and an error.

func CreateOrGetAndStrategicMergePatch added in v1.25.0 

func CreateOrGetAndStrategicMergePatch(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error)

CreateOrGetAndStrategicMergePatch creates or gets and patches (using a strategic merge patch) the given object in the Kubernetes cluster.

The MutateFn is called regardless of creating or patching an object.

It returns the executed operation and an error.

func CreateWorker 

func CreateWorker(ctx context.Context, queue workqueue.RateLimitingInterface, resourceType string, reconciler reconcile.Reconciler, waitGroup *sync.WaitGroup, workerCh chan<- int, opts ...WorkerOption)

CreateWorker creates and runs a worker goroutine that just processes items in the specified queue. The worker will run until ctx is cancelled. The worker will be added to the wait group when started and marked done when finished.

func DetermineBackupBucketAssociations 

func DetermineBackupBucketAssociations(ctx context.Context, c client.Client, seedName string) ([]string, error)

DetermineBackupBucketAssociations determine the BackupBucket resources which are associated to seed with name <seedName>

func DetermineBackupEntryAssociations 

func DetermineBackupEntryAssociations(ctx context.Context, c client.Client, seedName string) ([]string, error)

DetermineBackupEntryAssociations determine the BackupEntry resources which are associated to seed with name <seedName>

func DetermineBastionAssociations added in v1.23.0 

func DetermineBastionAssociations(ctx context.Context, c client.Client, seedName string) ([]string, error)

DetermineBastionAssociations determine the Bastion resources which are associated to seed with name <seedName>

func DetermineControllerInstallationAssociations 

func DetermineControllerInstallationAssociations(ctx context.Context, c client.Client, seedName string) ([]string, error)

DetermineControllerInstallationAssociations determine the ControllerInstallation resources which are associated to seed with name <seedName>

func DetermineSecretBindingAssociations 

func DetermineSecretBindingAssociations(ctx context.Context, c client.Client, quota *gardencorev1beta1.Quota) ([]string, error)

DetermineSecretBindingAssociations gets a <bindingLister> to determine the SecretBinding resources which are associated to given Quota <obj>.

func DetermineShootAssociations 

func DetermineShootAssociations(ctx context.Context, c client.Client, seedName string) ([]string, error)

DetermineShootAssociations determine the Shoot resources which are associated to seed with name <seedName>

func DetermineShootsAssociatedTo 

func DetermineShootsAssociatedTo(ctx context.Context, gardenClient client.Reader, obj interface{}) ([]string, error)

DetermineShootsAssociatedTo gets a <shootLister> to determine the Shoots resources which are associated to given <obj> (either a CloudProfile, Seed, Secretbinding a or a ExposureClass object).

func EnsureFinalizer 

func EnsureFinalizer(ctx context.Context, reader client.Reader, writer client.Writer, obj client.Object, finalizer string) error

EnsureFinalizer ensures that a finalizer of the given name is set on the given object with exponential backoff. If the finalizer is not set, it adds it to the list of finalizers and patches the remote object. Use PatchAddFinalizers instead, if the controller is able to tolerate conflict errors caused by stale reads.

func GetAndCreateOrMergePatch added in v1.23.0 

func GetAndCreateOrMergePatch(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error)

GetAndCreateOrMergePatch is similar to controllerutil.CreateOrPatch, but does not care about the object's status section. It reads the object from the client, reconciles the desired state with the existing state using the given MutateFn and creates or patches the object (using a merge patch) accordingly.

The MutateFn is called regardless of creating or updating an object.

It returns the executed operation and an error.

func GetAndCreateOrStrategicMergePatch added in v1.23.0 

func GetAndCreateOrStrategicMergePatch(ctx context.Context, c client.Client, obj client.Object, f controllerutil.MutateFn) (controllerutil.OperationResult, error)

GetAndCreateOrStrategicMergePatch is similar to controllerutil.CreateOrPatch, but does not care about the object's status section. It reads the object from the client, reconciles the desired state with the existing state using the given MutateFn and creates or patches the object (using a strategic merge patch) accordingly.

The MutateFn is called regardless of creating or updating an object.

It returns the executed operation and an error.

func GetTasks added in v1.3.1 

func GetTasks(annotations map[string]string) []string

GetTasks returns the list of tasks in the ShootTasks annotation.

func HasTask 

func HasTask(annotations map[string]string, task string) bool

HasTask checks if the passed task is part of the ShootTasks annotation.

func ManagedSeedFilterFunc added in v1.18.0 

func ManagedSeedFilterFunc(ctx context.Context, c client.Reader, seedName string) func(obj interface{}) bool

ManagedSeedFilterFunc returns a filtering func for ManagedSeeds that checks if the ManagedSeed references a Shoot scheduled on a Seed, for which the gardenlet is responsible..

func PatchAddFinalizers added in v1.18.0 

func PatchAddFinalizers(ctx context.Context, writer client.Writer, obj client.Object, finalizers ...string) error

PatchAddFinalizers adds the given finalizers to the object via a merge patch request with optimistic locking.

func PatchRemoveFinalizers added in v1.12.0 

func PatchRemoveFinalizers(ctx context.Context, writer client.Writer, obj client.Object, finalizers ...string) error

PatchRemoveFinalizers removes the given finalizers from the object via a merge patch request with optimistic locking.

func ReconcileOncePer24hDuration added in v1.10.2 

func ReconcileOncePer24hDuration(objectMeta metav1.ObjectMeta, observedGeneration int64, lastOperation *gardencorev1beta1.LastOperation) time.Duration

ReconcileOncePer24hDuration returns the duration until the next reconciliation should happen while respecting that only one reconciliation should happen per 24h. If the deletion timestamp is set or the generation has changed or the last operation does not indicate success or indicates that the last reconciliation happened more than 24h ago then 0 will be returned.

func RemoveAllFinalizers added in v1.27.0 

func RemoveAllFinalizers(ctx context.Context, reader client.Reader, writer client.Writer, obj client.Object) error

RemoveAllFinalizers ensures that the given object has no finalizers with exponential backoff. If any finalizers are set, it removes them and issues a patch.

func RemoveAllTasks 

func RemoveAllTasks(annotations map[string]string)

RemoveAllTasks removes the ShootTasks annotation from the passed map.

func RemoveFinalizer 

func RemoveFinalizer(ctx context.Context, reader client.Reader, writer client.Writer, obj client.Object, finalizer string) error

RemoveFinalizer ensures that the given finalizer is not present anymore in the given object with exponential backoff. If it is set, it removes it and issues a patch. Use PatchRemoveFinalizers instead, if the controller is able to tolerate conflict errors caused by stale reads.

func RemoveTasks added in v1.3.1 

func RemoveTasks(annotations map[string]string, tasksToRemove ...string)

RemoveTasks removes tasks from the ShootTasks annotation of the passed map.

func SeedFilterFunc 

func SeedFilterFunc(seedName string) func(obj interface{}) bool

SeedFilterFunc returns a filtering func for the seeds.

func SeedOfManagedSeedFilterFunc added in v1.25.0 

func SeedOfManagedSeedFilterFunc(ctx context.Context, c client.Reader, seedName string) func(obj interface{}) bool

SeedOfManagedSeedFilterFunc returns a filtering func for Seeds that checks if the Seed is owned by a ManagedSeed that references a Shoot scheduled on a Seed, for which the gardenlet is responsible.

func ShootFilterFunc 

func ShootFilterFunc(seedName string) func(obj interface{}) bool

ShootFilterFunc returns a filtering func for the seeds.

func ShootIsManagedByThisGardenlet added in v1.15.0 

func ShootIsManagedByThisGardenlet(shoot *gardencorev1beta1.Shoot, gc *config.GardenletConfiguration) bool

ShootIsManagedByThisGardenlet checks if the given shoot is managed by this gardenlet by comparing it with the seed name from the GardenletConfiguration.

func StrategicMergePatchAddFinalizers added in v1.33.0 

func StrategicMergePatchAddFinalizers(ctx context.Context, writer client.Writer, obj client.Object, finalizers ...string) error

StrategicMergePatchAddFinalizers adds the given finalizers to the object via a strategic merge patch request (without optimistic locking). Note: we can't do the same for removing finalizers, because removing the last finalizer results in the following patch: 

{"metadata":{"finalizers":null}}

which is not safe to issue without optimistic locking. Also, $deleteFromPrimitiveList is not idempotent, see https://github.com/kubernetes/kubernetes/issues/105146.

func TryPatch added in v1.34.0 

func TryPatch(ctx context.Context, backoff wait.Backoff, c client.Client, obj client.Object, transform func() error) error

TryPatch tries to apply the given transformation function onto the given object, and to patch it afterwards with optimistic locking. It retries the patch with an exponential backoff. Deprecated: This function is deprecated and will be removed in a future version. Please don't consider using it. See https://github.com/gardener/gardener/blob/master/docs/development/kubernetes-clients.md#dont-retry-on-conflict for more information.

func TryPatchStatus added in v1.34.0 

func TryPatchStatus(ctx context.Context, backoff wait.Backoff, c client.Client, obj client.Object, transform func() error) error

TryPatchStatus tries to apply the given transformation function onto the given object, and to patch its status afterwards with optimistic locking. It retries the status patch with an exponential backoff. Deprecated: This function is deprecated and will be removed in a future version. Please don't consider using it. See https://github.com/gardener/gardener/blob/master/docs/development/kubernetes-clients.md#dont-retry-on-conflict for more information.

func TryUpdate added in v1.34.0 

func TryUpdate(ctx context.Context, backoff wait.Backoff, c client.Client, obj client.Object, transform func() error) error

TryUpdate tries to apply the given transformation function onto the given object, and to update it afterwards. It retries the update with an exponential backoff. Deprecated: This function is deprecated and will be removed in a future version. Please don't consider using it. See https://github.com/gardener/gardener/blob/master/docs/development/kubernetes-clients.md#dont-retry-on-conflict for more information.

func TryUpdateStatus added in v1.34.0 

func TryUpdateStatus(ctx context.Context, backoff wait.Backoff, c client.Client, obj client.Object, transform func() error) error

TryUpdateStatus tries to apply the given transformation function onto the given object, and to update its status afterwards. It retries the status update with an exponential backoff. Deprecated: This function is deprecated and will be removed in a future version. Please don't consider using it. See https://github.com/gardener/gardener/blob/master/docs/development/kubernetes-clients.md#dont-retry-on-conflict for more information.

func TypedCreateOrUpdate added in v1.34.0 

func TypedCreateOrUpdate(ctx context.Context, c client.Client, scheme *runtime.Scheme, obj *unstructured.Unstructured, alwaysUpdate bool, mutate func() error) (controllerutil.OperationResult, error)

TypedCreateOrUpdate is like controllerutil.CreateOrUpdate, it retrieves the current state of the object from the API server, applies the given mutate func and creates or updates it afterwards. In contrast to controllerutil.CreateOrUpdate it tries to create a new typed object of obj's kind (using the provided scheme) to make typed Get requests in order to leverage the client's cache.

Types

type WorkerOption added in v1.38.0 

type WorkerOption func(*WorkerOptions)

WorkerOption is a func that mutates WorkerOptions.

func WithLogger added in v1.38.0 

func WithLogger(logger logr.Logger) WorkerOption

WithLogger configures the logr.Logger to use for a controller worker. If set, a logger preconfigured with the name and namespace field will be injected into the context.Context on each Reconcile call. It can be retrieved via log.FromContext.

type WorkerOptions added in v1.38.0 

type WorkerOptions struct {
	// contains filtered or unexported fields
}

WorkerOptions are options for a controller's worker.

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