util

package
v1.4.0-alpha.2 Latest Latest
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Published: Jul 29, 2016 License: Apache-2.0 Imports: 14 Imported by: 0

Documentation

Overview

TODO: consider moving it to a more generic package.

Index

Constants

View Source
const (
	KubeAPIQPS              = 20.0
	KubeAPIBurst            = 30
	KubeconfigSecretDataKey = "kubeconfig"
)

Variables

View Source
var KubeconfigGetterForCluster = func(c *federation_v1beta1.Cluster) clientcmd.KubeconfigGetter {
	return func() (*clientcmdapi.Config, error) {
		secretRefName := ""
		if c.Spec.SecretRef != nil {
			secretRefName = c.Spec.SecretRef.Name
		} else {
			glog.Infof("didnt find secretRef for cluster %s. Trying insecure access", c.Name)
		}
		return KubeconfigGetterForSecret(secretRefName)()
	}
}

This is to inject a different kubeconfigGetter in tests. We dont use the standard one which calls NewInCluster in tests to avoid having to setup service accounts and mount files with secret tokens.

View Source
var KubeconfigGetterForSecret = func(secretName string) clientcmd.KubeconfigGetter {
	return func() (*clientcmdapi.Config, error) {
		var data []byte
		if secretName != "" {

			namespace := os.Getenv("POD_NAMESPACE")
			if namespace == "" {
				return nil, fmt.Errorf("unexpected: POD_NAMESPACE env var returned empty string")
			}

			client, err := client.NewInCluster()
			if err != nil {
				return nil, fmt.Errorf("error in creating in-cluster client: %s", err)
			}
			data = []byte{}
			var secret *api.Secret
			err = wait.PollImmediate(1*time.Second, getSecretTimeout, func() (bool, error) {
				secret, err = client.Secrets(namespace).Get(secretName)
				if err == nil {
					return true, nil
				}
				glog.Warningf("error in fetching secret: %s", err)
				return false, nil
			})
			if err != nil {
				return nil, fmt.Errorf("timed out waiting for secret: %s", err)
			}
			if secret == nil {
				return nil, fmt.Errorf("unexpected: received null secret %s", secretName)
			}
			ok := false
			data, ok = secret.Data[KubeconfigSecretDataKey]
			if !ok {
				return nil, fmt.Errorf("secret does not have data with key: %s", KubeconfigSecretDataKey)
			}
		}
		return clientcmd.Load(data)
	}
}

KubeconfigGettterForSecret is used to get the kubeconfig from the given secret.

Functions

func BuildClusterConfig

func BuildClusterConfig(c *federation_v1beta1.Cluster) (*restclient.Config, error)

Types

type DelayingDeliverer added in v1.4.2

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

A structure that pushes the items to the target channel at a given time.

func NewDelayingDeliverer added in v1.4.2

func NewDelayingDeliverer(targetChannel chan *DelayingDelivererItem) *DelayingDeliverer

func (*DelayingDeliverer) DeliverAt added in v1.4.2

func (d *DelayingDeliverer) DeliverAt(key string, value interface{}, deliveryTime time.Time)

func (*DelayingDeliverer) Stop added in v1.4.2

func (d *DelayingDeliverer) Stop()

type DelayingDelivererItem added in v1.4.2

type DelayingDelivererItem struct {
	// Key under which the value was added to deliverer.
	Key string
	// Value of the item.
	Value interface{}
	// When the item should be delivered.
	DeliveryTime time.Time
}

DelayingDelivererItem is structure delivered by DelayingDeliverer to the target channel.

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