kube

Documentation

Overview

Package kube provides helper utilities common for kubernetes

Index

• Constants
• func GetAppInstanceLabel(un *unstructured.Unstructured, key string) string
• func GetDeploymentReplicas(u *unstructured.Unstructured) *int64
• func GetObjectRef(obj *unstructured.Unstructured) v1.ObjectReference
• func IsCRD(obj *unstructured.Unstructured) bool
• func IsCRDGroupVersionKind(gvk schema.GroupVersionKind) bool
• func MustToUnstructured(obj interface{}) *unstructured.Unstructured
• func NewKubeConfig(restConfig *rest.Config, namespace string) *clientcmdapi.Config
• func ServerResourceForGroupVersionKind(disco discovery.DiscoveryInterface, gvk schema.GroupVersionKind) (*metav1.APIResource, error)
• func SetAppInstanceLabel(target *unstructured.Unstructured, key, val string) error
• func SplitYAML(out string) ([]*unstructured.Unstructured, error)
• func TestConfig(config *rest.Config) error
• func ToGroupVersionResource(groupVersion string, apiResource *metav1.APIResource) schema.GroupVersionResource
• func ToResourceInterface(dynamicIf dynamic.Interface, apiResource *metav1.APIResource, ...) dynamic.ResourceInterface
• func ToUnstructured(obj interface{}) (*unstructured.Unstructured, error)
• func UnsetLabel(target *unstructured.Unstructured, key string)
• func WatchWithRetry(ctx context.Context, getWatch func() (watch.Interface, error)) ...
• func WriteKubeConfig(restConfig *rest.Config, namespace, filename string) error
• type APIResourceInfo
• type Kubectl
• type KubectlCmd
  • func (k KubectlCmd) ApplyResource(config *rest.Config, obj *unstructured.Unstructured, namespace string, ...) (string, error)
  • func (k KubectlCmd) ConvertToVersion(obj *unstructured.Unstructured, group string, version string) (*unstructured.Unstructured, error)
  • func (k KubectlCmd) DeleteResource(config *rest.Config, gvk schema.GroupVersionKind, name string, ...) error
  • func (k KubectlCmd) GetAPIResources(config *rest.Config, resourceFilter ResourceFilter) ([]APIResourceInfo, error)
  • func (k KubectlCmd) GetResource(config *rest.Config, gvk schema.GroupVersionKind, name string, ...) (*unstructured.Unstructured, error)
  • func (k KubectlCmd) PatchResource(config *rest.Config, gvk schema.GroupVersionKind, name string, ...) (*unstructured.Unstructured, error)
• type ResourceFilter
• type ResourceKey
  • func GetResourceKey(obj *unstructured.Unstructured) ResourceKey
  • func NewResourceKey(group string, kind string, namespace string, name string) ResourceKey
  • func (k ResourceKey) GroupKind() schema.GroupKind
  • func (k *ResourceKey) String() string

Constants

const (
	SecretKind                   = "Secret"
	ServiceKind                  = "Service"
	EndpointsKind                = "Endpoints"
	DeploymentKind               = "Deployment"
	ReplicaSetKind               = "ReplicaSet"
	StatefulSetKind              = "StatefulSet"
	DaemonSetKind                = "DaemonSet"
	IngressKind                  = "Ingress"
	JobKind                      = "Job"
	PersistentVolumeClaimKind    = "PersistentVolumeClaim"
	CustomResourceDefinitionKind = "CustomResourceDefinition"
	PodKind                      = "Pod"
	APIServiceKind               = "APIService"
)

Functions

func GetAppInstanceLabel

func GetAppInstanceLabel(un *unstructured.Unstructured, key string) string

GetAppInstanceLabel returns the application instance name from labels

func GetDeploymentReplicas

func GetDeploymentReplicas(u *unstructured.Unstructured) *int64

func GetObjectRef

func GetObjectRef(obj *unstructured.Unstructured) v1.ObjectReference

func IsCRD

func IsCRD(obj *unstructured.Unstructured) bool

func IsCRDGroupVersionKind

func IsCRDGroupVersionKind(gvk schema.GroupVersionKind) bool

func MustToUnstructured

func MustToUnstructured(obj interface{}) *unstructured.Unstructured

MustToUnstructured converts a concrete K8s API type to a un unstructured object and panics if not successful

func NewKubeConfig

func NewKubeConfig(restConfig *rest.Config, namespace string) *clientcmdapi.Config

NewKubeConfig converts a clientcmdapi.Config (kubeconfig) from a rest.Config

func ServerResourceForGroupVersionKind

func ServerResourceForGroupVersionKind(disco discovery.DiscoveryInterface, gvk schema.GroupVersionKind) (*metav1.APIResource, error)

See: https://github.com/ksonnet/ksonnet/blob/master/utils/client.go

func SetAppInstanceLabel

func SetAppInstanceLabel(target *unstructured.Unstructured, key, val string) error

SetAppInstanceLabel the recommended app.kubernetes.io/instance label against an unstructured object Uses the legacy labeling if environment variable is set

func SplitYAML

func SplitYAML(out string) ([]*unstructured.Unstructured, error)

SplitYAML splits a YAML file into unstructured objects. Returns list of all unstructured objects found in the yaml. If any errors occurred, returns the first one

func TestConfig

func TestConfig(config *rest.Config) error

TestConfig tests to make sure the REST config is usable

func ToGroupVersionResource

func ToGroupVersionResource(groupVersion string, apiResource *metav1.APIResource) schema.GroupVersionResource

func ToResourceInterface

func ToResourceInterface(dynamicIf dynamic.Interface, apiResource *metav1.APIResource, resource schema.GroupVersionResource, namespace string) dynamic.ResourceInterface

func ToUnstructured

func ToUnstructured(obj interface{}) (*unstructured.Unstructured, error)

ToUnstructured converts a concrete K8s API type to a un unstructured object

func UnsetLabel

func UnsetLabel(target *unstructured.Unstructured, key string)

UnsetLabel removes our app labels from an unstructured object

func WatchWithRetry

func WatchWithRetry(ctx context.Context, getWatch func() (watch.Interface, error)) chan struct {
	*watch.Event
	Error error
}

WatchWithRetry returns channel of watch events or errors of failed to call watch API.

func WriteKubeConfig

func WriteKubeConfig(restConfig *rest.Config, namespace, filename string) error

WriteKubeConfig takes a rest.Config and writes it as a kubeconfig at the specified path

Types

type APIResourceInfo

type APIResourceInfo struct {
	GroupKind schema.GroupKind
	Meta      metav1.APIResource
	Interface dynamic.ResourceInterface
}

type Kubectl

type Kubectl interface {
	ApplyResource(config *rest.Config, obj *unstructured.Unstructured, namespace string, dryRun, force, validate bool) (string, error)
	ConvertToVersion(obj *unstructured.Unstructured, group, version string) (*unstructured.Unstructured, error)
	DeleteResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string, forceDelete bool) error
	GetResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string) (*unstructured.Unstructured, error)
	PatchResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string, patchType types.PatchType, patchBytes []byte) (*unstructured.Unstructured, error)
	GetAPIResources(config *rest.Config, resourceFilter ResourceFilter) ([]APIResourceInfo, error)
}

type KubectlCmd

type KubectlCmd struct{}

func (KubectlCmd) ApplyResource

func (k KubectlCmd) ApplyResource(config *rest.Config, obj *unstructured.Unstructured, namespace string, dryRun, force, validate bool) (string, error)

ApplyResource performs an apply of a unstructured resource

func (KubectlCmd) ConvertToVersion

func (k KubectlCmd) ConvertToVersion(obj *unstructured.Unstructured, group string, version string) (*unstructured.Unstructured, error)

ConvertToVersion converts an unstructured object into the specified group/version

func (KubectlCmd) DeleteResource

func (k KubectlCmd) DeleteResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string, forceDelete bool) error

DeleteResource deletes resource

func (KubectlCmd) GetAPIResources

func (k KubectlCmd) GetAPIResources(config *rest.Config, resourceFilter ResourceFilter) ([]APIResourceInfo, error)

func (KubectlCmd) GetResource

func (k KubectlCmd) GetResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string) (*unstructured.Unstructured, error)

GetResource returns resource

func (KubectlCmd) PatchResource

func (k KubectlCmd) PatchResource(config *rest.Config, gvk schema.GroupVersionKind, name string, namespace string, patchType types.PatchType, patchBytes []byte) (*unstructured.Unstructured, error)

PatchResource patches resource

type ResourceFilter

type ResourceFilter interface {
	IsExcludedResource(group, kind, cluster string) bool
}

type ResourceKey

type ResourceKey struct {
	Group     string
	Kind      string
	Namespace string
	Name      string
}

func GetResourceKey

func GetResourceKey(obj *unstructured.Unstructured) ResourceKey

func NewResourceKey

func NewResourceKey(group string, kind string, namespace string, name string) ResourceKey

func (ResourceKey) GroupKind

func (k ResourceKey) GroupKind() schema.GroupKind

func (*ResourceKey) String

func (k *ResourceKey) String() string