104 lines
3.1 KiB
Go
104 lines
3.1 KiB
Go
package k8sutil
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import (
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"time"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/client-go/kubernetes"
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v1beta1 "k8s.io/client-go/kubernetes/typed/apps/v1beta1"
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v1core "k8s.io/client-go/kubernetes/typed/core/v1"
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extensions "k8s.io/client-go/kubernetes/typed/extensions/v1beta1"
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"k8s.io/client-go/pkg/api"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/clientcmd"
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"github.com/zalando-incubator/postgres-operator/pkg/util/constants"
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"github.com/zalando-incubator/postgres-operator/pkg/util/retryutil"
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)
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// KubernetesClient describes getters for Kubernetes objects
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type KubernetesClient struct {
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v1core.SecretsGetter
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v1core.ServicesGetter
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v1core.EndpointsGetter
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v1core.PodsGetter
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v1core.PersistentVolumesGetter
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v1core.PersistentVolumeClaimsGetter
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v1core.ConfigMapsGetter
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v1beta1.StatefulSetsGetter
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extensions.ThirdPartyResourcesGetter
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RESTClient rest.Interface
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}
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// NewFromKubernetesInterface creates KubernetesClient from kubernetes Interface
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func NewFromKubernetesInterface(src kubernetes.Interface) (c KubernetesClient) {
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c = KubernetesClient{}
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c.PodsGetter = src.CoreV1()
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c.ServicesGetter = src.CoreV1()
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c.EndpointsGetter = src.CoreV1()
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c.SecretsGetter = src.CoreV1()
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c.ConfigMapsGetter = src.CoreV1()
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c.PersistentVolumeClaimsGetter = src.CoreV1()
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c.PersistentVolumesGetter = src.CoreV1()
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c.StatefulSetsGetter = src.AppsV1beta1()
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c.ThirdPartyResourcesGetter = src.ExtensionsV1beta1()
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c.RESTClient = src.CoreV1().RESTClient()
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return
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}
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// RestConfig creates REST config
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func RestConfig(kubeConfig string, outOfCluster bool) (*rest.Config, error) {
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if outOfCluster {
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return clientcmd.BuildConfigFromFlags("", kubeConfig)
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}
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return rest.InClusterConfig()
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}
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// ClientSet creates clientset using REST config
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func ClientSet(config *rest.Config) (client *kubernetes.Clientset, err error) {
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return kubernetes.NewForConfig(config)
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}
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// ResourceAlreadyExists checks if error corresponds to Already exists error
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func ResourceAlreadyExists(err error) bool {
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return apierrors.IsAlreadyExists(err)
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}
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// ResourceNotFound checks if error corresponds to Not found error
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func ResourceNotFound(err error) bool {
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return apierrors.IsNotFound(err)
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}
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// KubernetesRestClient create kubernets Interface using REST config
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func KubernetesRestClient(cfg rest.Config) (rest.Interface, error) {
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cfg.GroupVersion = &schema.GroupVersion{
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Group: constants.TPRGroup,
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Version: constants.TPRApiVersion,
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}
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cfg.APIPath = constants.K8sAPIPath
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cfg.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: api.Codecs}
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return rest.RESTClientFor(&cfg)
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}
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// WaitTPRReady waits until ThirdPartyResource is ready
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func WaitTPRReady(restclient rest.Interface, interval, timeout time.Duration, ns string) error {
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return retryutil.Retry(interval, timeout, func() (bool, error) {
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_, err := restclient.
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Get().
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Namespace(ns).
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Resource(constants.ResourceName).
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DoRaw()
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if err != nil {
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if ResourceNotFound(err) { // not set up yet. wait more.
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return false, nil
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}
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return false, err
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}
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return true, nil
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})
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}
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