postgres-operator/pkg/util/k8sutil/k8sutil.go

96 lines
2.6 KiB
Go

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