83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
/*
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Copyright 2019 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package k8sutil
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import (
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"fmt"
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apps "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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k8serrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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)
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// make a headless svc for statefulset
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func makeHeadlessSvc(name, namespace string, label map[string]string, clientset kubernetes.Interface) (*corev1.Service, error) {
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svc := &corev1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: namespace,
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Labels: label,
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},
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Spec: corev1.ServiceSpec{
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Selector: label,
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Ports: []corev1.ServicePort{{Name: "dummy", Port: 1234}},
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},
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}
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_, err := clientset.CoreV1().Services(namespace).Create(svc)
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if err != nil && !k8serrors.IsAlreadyExists(err) {
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return nil, fmt.Errorf("failed to create %s headless service. %+v", name, err)
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}
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return svc, nil
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}
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// create a apps.daemonset
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func CreateDaemonSet(name, namespace string, clientset kubernetes.Interface, ds *apps.DaemonSet) error {
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_, err := clientset.Apps().DaemonSets(namespace).Create(ds)
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if err != nil {
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if k8serrors.IsAlreadyExists(err) {
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_, err = clientset.Apps().DaemonSets(namespace).Update(ds)
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}
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if err != nil {
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return fmt.Errorf("failed to start %s daemonset: %v\n%v", name, err, ds)
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}
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}
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return err
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}
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// create a apps.statefulset and a headless svc
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func CreateStatefulSet(name, namespace, appName string, clientset kubernetes.Interface, ss *apps.StatefulSet) (*corev1.Service, error) {
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label := ss.GetLabels()
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svc, err := makeHeadlessSvc(appName, namespace, label, clientset)
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if err != nil {
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return nil, fmt.Errorf("failed to start %s service: %v\n%v", name, err, ss)
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}
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_, err = clientset.Apps().StatefulSets(namespace).Create(ss)
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if err != nil {
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if k8serrors.IsAlreadyExists(err) {
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_, err = clientset.Apps().StatefulSets(namespace).Update(ss)
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}
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if err != nil {
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return nil, fmt.Errorf("failed to start %s statefulset: %v\n%v", name, err, ss)
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}
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}
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return svc, err
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}
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