/
kubernetes.go
81 lines (65 loc) · 2.01 KB
/
kubernetes.go
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// Copyright 2021 The Kubernetes Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"crypto/sha256"
"fmt"
"os"
"path/filepath"
"strings"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
"k8s.io/klog/v2"
)
func NamespacedNameFormat(str string) types.NamespacedName {
nn := types.NamespacedName{}
if str != "" {
strs := strings.Split(str, "/")
if len(strs) != 2 {
errmsg := "Illegal string, want namespace/name, but get " + str
klog.Error(errmsg)
return nn
}
nn.Name = strs[1]
nn.Namespace = strs[0]
}
return nn
}
// ConvertLabels coverts label selector to lables.Selector
func ConvertLabels(labelSelector *metav1.LabelSelector) (labels.Selector, error) {
if labelSelector != nil {
selector, err := metav1.LabelSelectorAsSelector(labelSelector)
if err != nil {
return labels.Nothing(), err
}
return selector, nil
}
return labels.Everything(), nil
}
func GetComponentNamespace() (string, error) {
nsBytes, err := os.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
if err != nil {
return "open-cluster-management-agent-addon", err
}
return string(nsBytes), nil
}
// GetCheckSum generates a checksum of a kube config file
func GetCheckSum(kubeconfigfile string) ([32]byte, error) {
content, err := os.ReadFile(filepath.Clean(kubeconfigfile))
if err != nil {
return [32]byte{}, fmt.Errorf("read %s failed, %w", kubeconfigfile, err)
}
return sha256.Sum256(content), nil
}