forked from rook/rook
106 lines
2.9 KiB
Go
106 lines
2.9 KiB
Go
/*
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Copyright 2017 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 for Kubernetes helpers.
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package k8sutil
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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/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/kubernetes"
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)
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type ConfigMapKVStore struct {
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namespace string
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clientset kubernetes.Interface
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ownerRef metav1.OwnerReference
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}
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func NewConfigMapKVStore(namespace string, clientset kubernetes.Interface, ownerRef metav1.OwnerReference) *ConfigMapKVStore {
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return &ConfigMapKVStore{
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namespace: namespace,
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clientset: clientset,
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ownerRef: ownerRef,
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}
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}
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func (kv *ConfigMapKVStore) GetValue(storeName, key string) (string, error) {
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cm, err := kv.clientset.CoreV1().ConfigMaps(kv.namespace).Get(storeName, metav1.GetOptions{})
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if err != nil {
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return "", err
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}
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val, ok := cm.Data[key]
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if !ok {
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return "", errors.NewNotFound(schema.GroupResource{}, key)
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}
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return val, nil
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}
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func (kv *ConfigMapKVStore) SetValue(storeName, key, value string) error {
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cm, err := kv.clientset.CoreV1().ConfigMaps(kv.namespace).Get(storeName, metav1.GetOptions{})
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if err != nil {
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if !errors.IsNotFound(err) {
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return err
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}
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// the given config map doesn't exist yet, create it now with the given key/val
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cm = &v1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: storeName,
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Namespace: kv.namespace,
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OwnerReferences: []metav1.OwnerReference{kv.ownerRef},
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},
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Data: map[string]string{key: value},
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}
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_, err = kv.clientset.CoreV1().ConfigMaps(kv.namespace).Create(cm)
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return err
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}
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// config map already exists, so update it with the given key/val
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cm.Data[key] = value
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_, err = kv.clientset.CoreV1().ConfigMaps(kv.namespace).Update(cm)
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if err != nil {
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return err
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}
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return nil
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}
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func (kv *ConfigMapKVStore) GetStore(storeName string) (map[string]string, error) {
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cm, err := kv.clientset.CoreV1().ConfigMaps(kv.namespace).Get(storeName, metav1.GetOptions{})
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if err != nil {
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return nil, err
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}
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return cm.Data, nil
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}
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func (kv *ConfigMapKVStore) ClearStore(storeName string) error {
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err := kv.clientset.CoreV1().ConfigMaps(kv.namespace).Delete(storeName, &metav1.DeleteOptions{})
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if err != nil && !errors.IsNotFound(err) {
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// a real error, return it (we're OK with clearing a store that doesn't exist)
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return err
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}
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return nil
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}
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