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Etienne PerotandgVisor bot
4cff9027d6
This is a large set of Kubernetes-based performance benchmarks that has been in use at Google for gVisor performance testing on GKE, and is now open-source. This set of benchmarks has been created and maintained by multiple contributors over the last 2 years: @zkoopmans, @EtiennePerot, @kevinGC, @ayushr2, @manninglucas, @konstantin-s-bogom. PiperOrigin-RevId: 686649688
91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
// Copyright 2023 The gVisor Authors.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// Package cluster provides functions for dealing with Kubernetes clusters.
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package cluster
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import (
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"context"
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"fmt"
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appsv1 "k8s.io/api/apps/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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)
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const (
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// NamespaceDefault is the name of the default Kubernetes namespace.
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NamespaceDefault = "default"
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)
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// Cluster presents Kubernetes API method over a Kubernetes cluster.
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type Cluster struct {
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client kubernetes.Interface
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}
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// New initializes a new Cluster from the given client REST config.
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func New(config *rest.Config) (*Cluster, error) {
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clientSet, err := kubernetes.NewForConfig(config)
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if err != nil {
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return nil, fmt.Errorf("kubernetes.NewForConfig: %w", err)
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}
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return &Cluster{clientSet}, nil
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}
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// Client returns the underlying Kubernetes client.
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func (c *Cluster) Client() kubernetes.Interface {
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return c.client
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}
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// CreateDaemonset creates a daemonset with default options.
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func (c *Cluster) CreateDaemonset(ctx context.Context, ds *appsv1.DaemonSet) (*appsv1.DaemonSet, error) {
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if ds.GetObjectMeta().GetNamespace() == "" {
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ds.SetNamespace(NamespaceDefault)
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}
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return c.client.AppsV1().DaemonSets(ds.GetNamespace()).Create(ctx, ds, v1.CreateOptions{})
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}
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// DeleteDaemonset deletes a daemonset from this cluster.
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func (c *Cluster) DeleteDaemonset(ctx context.Context, ds *appsv1.DaemonSet) error {
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return c.client.AppsV1().DaemonSets(ds.GetNamespace()).Delete(ctx, ds.GetName(), v1.DeleteOptions{})
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}
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// WaitForDaemonset waits until a daemonset has propagated containers across the affected nodes.
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func (c *Cluster) WaitForDaemonset(ctx context.Context, ds *appsv1.DaemonSet) error {
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w, err := c.client.AppsV1().DaemonSets(ds.GetNamespace()).Watch(ctx, v1.ListOptions{
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FieldSelector: fields.SelectorFromSet(fields.Set{v1.ObjectNameField: ds.ObjectMeta.Name}).String(),
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})
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if err != nil {
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return fmt.Errorf("failed to watch DaemonSet: %w", err)
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}
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defer w.Stop()
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for {
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select {
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case <-ctx.Done():
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return fmt.Errorf("context canceled before DaemonSet was healthy")
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case e, ok := <-w.ResultChan():
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d, ok := e.Object.(*appsv1.DaemonSet)
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if !ok {
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return fmt.Errorf("invalid object type: %T", d)
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}
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if d.Status.NumberReady == d.Status.DesiredNumberScheduled && d.Status.NumberUnavailable == 0 {
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return nil
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}
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}
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}
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}
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