99 lines
2.9 KiB
Go
99 lines
2.9 KiB
Go
package k8sutil
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import (
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"fmt"
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apiextclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
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apiextbeta1 "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/typed/apiextensions/v1beta1"
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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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"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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)
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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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apiextbeta1.CustomResourceDefinitionsGetter
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RESTClient rest.Interface
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CRDREST rest.Interface
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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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// 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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// NewFromConfig create Kubernets Interface using REST config
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func NewFromConfig(cfg *rest.Config) (KubernetesClient, error) {
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kubeClient := KubernetesClient{}
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client, err := kubernetes.NewForConfig(cfg)
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if err != nil {
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return kubeClient, fmt.Errorf("could not get clientset: %v", err)
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}
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kubeClient.PodsGetter = client.CoreV1()
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kubeClient.ServicesGetter = client.CoreV1()
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kubeClient.EndpointsGetter = client.CoreV1()
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kubeClient.SecretsGetter = client.CoreV1()
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kubeClient.ConfigMapsGetter = client.CoreV1()
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kubeClient.PersistentVolumeClaimsGetter = client.CoreV1()
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kubeClient.PersistentVolumesGetter = client.CoreV1()
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kubeClient.StatefulSetsGetter = client.AppsV1beta1()
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kubeClient.RESTClient = client.CoreV1().RESTClient()
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cfg2 := *cfg
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cfg2.GroupVersion = &schema.GroupVersion{
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Group: constants.CRDGroup,
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Version: constants.CRDApiVersion,
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}
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cfg2.APIPath = constants.K8sAPIPath
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cfg2.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: api.Codecs}
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crd, err := rest.RESTClientFor(&cfg2)
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if err != nil {
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return kubeClient, fmt.Errorf("could not get rest client: %v", err)
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}
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kubeClient.CRDREST = crd
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apiextClient, err := apiextclient.NewForConfig(cfg)
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if err != nil {
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return kubeClient, fmt.Errorf("could not create api client:%v", err)
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}
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kubeClient.CustomResourceDefinitionsGetter = apiextClient.ApiextensionsV1beta1()
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return kubeClient, nil
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}
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