mirror of
https://github.com/vmware-tanzu/velero.git
synced 2026-01-07 13:55:20 +00:00
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
/*
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Copyright The Velero Contributors.
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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
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import (
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"context"
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"fmt"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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corev1api "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
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"sigs.k8s.io/controller-runtime/pkg/client"
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)
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const (
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NodeOSLinux = "linux"
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NodeOSWindows = "windows"
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NodeOSLabel = "kubernetes.io/os"
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)
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func IsLinuxNode(ctx context.Context, nodeName string, client client.Client) error {
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node := &corev1api.Node{}
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if err := client.Get(ctx, types.NamespacedName{Name: nodeName}, node); err != nil {
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return errors.Wrapf(err, "error getting node %s", nodeName)
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}
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os, found := node.Labels[NodeOSLabel]
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if !found {
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return errors.Errorf("no os type label for node %s", nodeName)
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}
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if os != NodeOSLinux {
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return errors.Errorf("os type %s for node %s is not linux", os, nodeName)
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}
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return nil
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}
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func WithLinuxNode(ctx context.Context, client client.Client, log logrus.FieldLogger) bool {
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return withOSNode(ctx, client, NodeOSLinux, log)
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}
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func WithWindowsNode(ctx context.Context, client client.Client, log logrus.FieldLogger) bool {
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return withOSNode(ctx, client, NodeOSWindows, log)
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}
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func withOSNode(ctx context.Context, client client.Client, osType string, log logrus.FieldLogger) bool {
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nodeList := new(corev1api.NodeList)
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if err := client.List(ctx, nodeList); err != nil {
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log.Warnf("Failed to list nodes, cannot decide existence of nodes of OS %s", osType)
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return false
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}
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allNodeLabeled := true
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for _, node := range nodeList.Items {
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os, found := node.Labels[NodeOSLabel]
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if os == osType {
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return true
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}
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if !found {
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allNodeLabeled = false
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}
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}
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if !allNodeLabeled {
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log.Warnf("Not all nodes have os type label, cannot decide existence of nodes of OS %s", osType)
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}
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return false
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}
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func GetNodeOS(ctx context.Context, nodeName string, nodeClient corev1client.CoreV1Interface) (string, error) {
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node, err := nodeClient.Nodes().Get(context.Background(), nodeName, metav1.GetOptions{})
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if err != nil {
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return "", errors.Wrapf(err, "error getting node %s", nodeName)
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}
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if node.Labels == nil {
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return "", nil
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}
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return node.Labels[NodeOSLabel], nil
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}
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func HasNodeWithOS(ctx context.Context, os string, nodeClient corev1client.CoreV1Interface) error {
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if os == "" {
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return errors.New("invalid node OS")
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}
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nodes, err := nodeClient.Nodes().List(ctx, metav1.ListOptions{LabelSelector: fmt.Sprintf("%s=%s", NodeOSLabel, os)})
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if err != nil {
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return errors.Wrapf(err, "error listing nodes with OS %s", os)
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}
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if len(nodes.Items) == 0 {
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return errors.Errorf("node with OS %s doesn't exist", os)
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}
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return nil
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}
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