| /* |
| Copyright 2018 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 ipamperf |
| |
| import ( |
| "time" |
| |
| "k8s.io/api/core/v1" |
| "k8s.io/apimachinery/pkg/api/errors" |
| "k8s.io/apimachinery/pkg/api/resource" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/runtime/schema" |
| clientset "k8s.io/client-go/kubernetes" |
| restclient "k8s.io/client-go/rest" |
| "k8s.io/klog" |
| ) |
| |
| const ( |
| maxCreateRetries = 10 |
| retryDelay = 10 * time.Second |
| ) |
| |
| var ( |
| baseNodeTemplate = &v1.Node{ |
| ObjectMeta: metav1.ObjectMeta{ |
| GenerateName: "sample-node-", |
| }, |
| Status: v1.NodeStatus{ |
| Capacity: v1.ResourceList{ |
| v1.ResourcePods: *resource.NewQuantity(110, resource.DecimalSI), |
| v1.ResourceCPU: resource.MustParse("4"), |
| v1.ResourceMemory: resource.MustParse("32Gi"), |
| }, |
| Phase: v1.NodeRunning, |
| Conditions: []v1.NodeCondition{ |
| {Type: v1.NodeReady, Status: v1.ConditionTrue}, |
| }, |
| }, |
| } |
| ) |
| |
| func deleteNodes(apiURL string, config *Config) { |
| klog.Info("Deleting nodes") |
| clientSet := clientset.NewForConfigOrDie(&restclient.Config{ |
| Host: apiURL, |
| ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}, |
| QPS: float32(config.CreateQPS), |
| Burst: config.CreateQPS, |
| }) |
| noGrace := int64(0) |
| if err := clientSet.CoreV1().Nodes().DeleteCollection(&metav1.DeleteOptions{GracePeriodSeconds: &noGrace}, metav1.ListOptions{}); err != nil { |
| klog.Errorf("Error deleting node: %v", err) |
| } |
| } |
| |
| func createNodes(apiURL string, config *Config) error { |
| clientSet := clientset.NewForConfigOrDie(&restclient.Config{ |
| Host: apiURL, |
| ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}, |
| QPS: float32(config.CreateQPS), |
| Burst: config.CreateQPS, |
| }) |
| klog.Infof("Creating %d nodes", config.NumNodes) |
| for i := 0; i < config.NumNodes; i++ { |
| var err error |
| for j := 0; j < maxCreateRetries; j++ { |
| if _, err = clientSet.CoreV1().Nodes().Create(baseNodeTemplate); err != nil && errors.IsServerTimeout(err) { |
| klog.Infof("Server timeout creating nodes, retrying after %v", retryDelay) |
| time.Sleep(retryDelay) |
| continue |
| } |
| break |
| } |
| if err != nil { |
| klog.Errorf("Error creating nodes: %v", err) |
| return err |
| } |
| } |
| klog.Infof("%d nodes created", config.NumNodes) |
| return nil |
| } |