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59 lines
1.7 KiB
59 lines
1.7 KiB
/*
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Copyright The Helm Authors.
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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 kube // import "k8s.io/helm/pkg/kube"
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import (
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"k8s.io/api/core/v1"
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"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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func createNamespace(client kubernetes.Interface, namespace string) error {
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ns := &v1.Namespace{
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ObjectMeta: metav1.ObjectMeta{
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Name: namespace,
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Labels: map[string]string{
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"name": namespace,
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},
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},
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}
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_, err := client.CoreV1().Namespaces().Create(ns)
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return err
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}
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func getNamespace(client kubernetes.Interface, namespace string) (*v1.Namespace, error) {
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return client.CoreV1().Namespaces().Get(namespace, metav1.GetOptions{})
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}
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func ensureNamespace(client kubernetes.Interface, namespace string) error {
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_, err := getNamespace(client, namespace)
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if err != nil && errors.IsNotFound(err) {
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err = createNamespace(client, namespace)
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// If multiple commands which run `ensureNamespace` are run in
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// parallel, then protect against the race condition in which
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// the namespace did not exist when `getNamespace` was executed,
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// but did exist when `createNamespace` was executed. If that
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// happens, we can just proceed as normal.
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if errors.IsAlreadyExists(err) {
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return nil
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}
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}
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return err
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}
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