core

package
v0.1.0 Latest Latest
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 Go to latest Published: Feb 7, 2024 License: MIT Imports: 25 Imported by: 0

Documentation

Overview

Package core implements core utilities.

Index

Constants

View Source 
const (
	// CharSet defines the alphanumeric set for random string generation.
	CharSet = "0123456789abcdefghijklmnopqrstuvwxyz"
)

Variables

View Source 
var (

	// ErrNoChain is returned when the cluster
	// label could not be found on the object passed in.
	ErrNoChain = fmt.Errorf("no %q label present", v1beta1.ChainNameLabel)

	// ErrUnstructuredFieldNotFound determines that a field
	// in an unstructured object could not be found.
	ErrUnstructuredFieldNotFound = fmt.Errorf("field not found")
)

Functions

func ChainToTypedObjectsMapper 

func ChainToTypedObjectsMapper(c client.Client, ro client.ObjectList, scheme *runtime.Scheme) (handler.MapFunc, error)

ChainToTypedObjectsMapper returns a mapper function that gets a cluster and lists all objects for the object passed in and returns a list of requests. Note: This function uses the passed in typed ObjectList and thus with the default client configuration all list calls will be cached. NB: The objects are required to have `v1beta1.ChainNameLabel` applied.

func EnsureOwnerRef 

func EnsureOwnerRef(ownerReferences []metav1.OwnerReference, ref metav1.OwnerReference) []metav1.OwnerReference

EnsureOwnerRef makes sure the slice contains the OwnerReference. Note: EnsureOwnerRef will update the version of the OwnerReference fi it exists with a different version. It will also update the UID.

func GetChainByName 

func GetChainByName(ctx context.Context, c client.Client, namespace, name string) (*v1beta1.Chain, error)

GetChainByName finds and return a Chain object using the specified params.

func GetChainFromMetadata 

func GetChainFromMetadata(ctx context.Context, c client.Client, obj metav1.ObjectMeta) (*v1beta1.Chain, error)

GetChainFromMetadata returns the Chain object (if present) using the object metadata.

func GetGVKMetadata 

func GetGVKMetadata(ctx context.Context, c client.Client, gvk schema.GroupVersionKind) (*metav1.PartialObjectMetadata, error)

GetGVKMetadata retrieves a CustomResourceDefinition metadata from the API server using partial object metadata.

This function is greatly more efficient than GetCRDWithContract and should be preferred in most cases.

func GetMinerByName 

func GetMinerByName(ctx context.Context, c client.Client, namespace, name string) (*v1beta1.Miner, error)

GetMinerByName finds and return a Miner object using the specified params.

func GetMinerIfExists 

func GetMinerIfExists(ctx context.Context, c client.Client, namespace, name string) (*v1beta1.Miner, error)

GetMinerIfExists gets a miner from the API server if it exists.

func GetOwnerChain 

func GetOwnerChain(ctx context.Context, c client.Client, obj metav1.ObjectMeta) (*v1beta1.Chain, error)

GetOwnerChain returns the Chain object owning the current resource.

func GetOwnerMiner 

func GetOwnerMiner(ctx context.Context, c client.Client, obj metav1.ObjectMeta) (*v1beta1.Miner, error)

GetOwnerMiner returns the Miner object owning the current resource.

func HasOwner 

func HasOwner(refList []metav1.OwnerReference, apiVersion string, kinds []string) bool

HasOwner checks if any of the references in the passed list match the given group from apiVersion and one of the given kinds.

func HasOwnerRef 

func HasOwnerRef(ownerReferences []metav1.OwnerReference, ref metav1.OwnerReference) bool

HasOwnerRef returns true if the OwnerReference is already in the slice. It matches based on Group, Kind and Name.

func IsControlledBy 

func IsControlledBy(obj metav1.Object, owner client.Object) bool

IsControlledBy differs from metav1.IsControlledBy. This function matches on Group, Kind and Name. The metav1.IsControlledBy function matches on UID only.

func IsExternalManagedControlPlane 

func IsExternalManagedControlPlane(controlPlane *unstructured.Unstructured) bool

IsExternalManagedControlPlane returns a bool indicating whether the control plane referenced in the passed Unstructured resource is an externally managed control plane such as AKS, EKS, GKE, etc.

func IsNil 

func IsNil(i interface{}) bool

IsNil returns an error if the passed interface is equal to nil or if it has an interface value of nil.

func IsNodeReady 

func IsNodeReady(node *corev1.Node) bool

IsNodeReady returns true if a node is ready.

func IsOwnedByObject 

func IsOwnedByObject(obj metav1.Object, target client.Object) bool

IsOwnedByObject returns true if any of the owner references point to the given target. It matches the object based on the Group, Kind and Name.

func IsSupportedVersionSkew 

func IsSupportedVersionSkew(a, b semver.Version) bool

IsSupportedVersionSkew will return true if a and b are no more than one minor version off from each other.

func LowestNonZeroInt32 

func LowestNonZeroInt32(i, j int32) int32

LowestNonZeroInt32 returns the lowest non-zero value of the two provided values.

func LowestNonZeroResult 

func LowestNonZeroResult(i, j ctrl.Result) ctrl.Result

LowestNonZeroResult compares two reconciliation results and returns the one with lowest requeue time.

func MergeMap 

func MergeMap(maps ...map[string]string) map[string]string

MergeMap merges maps. NOTE: In case a key exists in multiple maps, the value of the first map is preserved.

func ObjectKey 

func ObjectKey(object metav1.Object) client.ObjectKey

ObjectKey returns client.ObjectKey for the object.

func ObjectReferenceToUnstructured 

func ObjectReferenceToUnstructured(in corev1.ObjectReference) *unstructured.Unstructured

ObjectReferenceToUnstructured converts an object reference to an unstructured object.

func Ordinalize 

func Ordinalize(n int) string

Ordinalize takes an int and returns the ordinalized version of it. Eg. 1 --> 1st, 103 --> 103rd.

func RandomString 

func RandomString(n int) string

RandomString returns a random alphanumeric string.

func RemoveOwnerRef 

func RemoveOwnerRef(ownerReferences []metav1.OwnerReference, inputRef metav1.OwnerReference) []metav1.OwnerReference

RemoveOwnerRef returns the slice of owner references after removing the supplied owner ref. Note: RemoveOwnerRef ignores apiVersion and UID. It will remove the passed ownerReference where it matches Name, Group and Kind.

func ReplaceOwnerRef 

func ReplaceOwnerRef(ownerReferences []metav1.OwnerReference, source metav1.Object, target metav1.OwnerReference) []metav1.OwnerReference

ReplaceOwnerRef re-parents an object from one OwnerReference to another It compares strictly based on UID to avoid reparenting across an intentional deletion: if an object is deleted and re-created with the same name and namespace, the only way to tell there was an in-progress deletion is by comparing the UIDs.

func UnstructuredUnmarshalField 

func UnstructuredUnmarshalField(obj *unstructured.Unstructured, v interface{}, fields ...string) error

UnstructuredUnmarshalField is a wrapper around json and unstructured objects to decode and copy a specific field value into an object.

Types

type KubeAwareAPIVersions 

type KubeAwareAPIVersions []string

KubeAwareAPIVersions is a sortable slice of kube-like version strings.

Kube-like version strings are starting with a v, followed by a major version, optional "alpha" or "beta" strings followed by a minor version (e.g. v1, v2beta1). Versions will be sorted based on GA/alpha/beta first and then major and minor versions. e.g. v2, v1, v1beta2, v1beta1, v1alpha1.

func (KubeAwareAPIVersions) Len 

func (k KubeAwareAPIVersions) Len() int

func (KubeAwareAPIVersions) Less 

func (k KubeAwareAPIVersions) Less(i, j int) bool

func (KubeAwareAPIVersions) Swap 

func (k KubeAwareAPIVersions) Swap(i, j int)

Source Files

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