k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/test/e2e/kubectl/exec.go (about)

     1  /*
     2  Copyright 2024 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  // OWNER = sig/cli
    18  
    19  package kubectl
    20  
    21  import (
    22  	"context"
    23  	"time"
    24  
    25  	"github.com/onsi/ginkgo/v2"
    26  	v1 "k8s.io/api/core/v1"
    27  	"k8s.io/kubernetes/test/e2e/framework"
    28  	e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
    29  	admissionapi "k8s.io/pod-security-admission/api"
    30  )
    31  
    32  func worker(f *framework.Framework, pod *v1.Pod, id int, jobs <-chan int, results chan<- error) {
    33  	for j := range jobs {
    34  		framework.Logf("Worker: %d Job: %d", id, j)
    35  		func() {
    36  			ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
    37  			defer cancel()
    38  			stdout, stderr, err := e2epod.ExecWithOptionsContext(ctx, f, e2epod.ExecOptions{
    39  				Command:            []string{"date"},
    40  				Namespace:          f.Namespace.Name,
    41  				PodName:            pod.Name,
    42  				ContainerName:      pod.Spec.Containers[0].Name,
    43  				Stdin:              nil,
    44  				CaptureStdout:      true,
    45  				CaptureStderr:      true,
    46  				PreserveWhitespace: false,
    47  			})
    48  			if err != nil {
    49  				framework.Logf("Try: %d Error: %v stdout: %s stderr: %s", j, err, stdout, stderr)
    50  			}
    51  			results <- err
    52  		}()
    53  	}
    54  }
    55  
    56  var _ = SIGDescribe("Kubectl exec", func() {
    57  	f := framework.NewDefaultFramework("exec")
    58  
    59  	f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
    60  	f.It("should be able to execute 1000 times in a container", func(ctx context.Context) {
    61  		const size = 1000
    62  		ns := f.Namespace.Name
    63  		podName := "test-exec-pod"
    64  		jobs := make(chan int, size)
    65  		results := make(chan error, size)
    66  
    67  		pod := e2epod.NewAgnhostPod(ns, podName, nil, nil, nil)
    68  		pod = e2epod.NewPodClient(f).CreateSync(ctx, pod)
    69  
    70  		// 10 workers for 1000 executions
    71  		ginkgo.By("Starting workers to exec on pod")
    72  		for w := 0; w < 10; w++ {
    73  			framework.Logf("Starting worker %d", w)
    74  			go worker(f, pod, w, jobs, results)
    75  		}
    76  		for i := 0; i < size; i++ {
    77  			framework.Logf("Sending job %d", i)
    78  			jobs <- i
    79  		}
    80  		ginkgo.By("All jobs processed")
    81  		close(jobs)
    82  
    83  		errors := []error{}
    84  		for c := 0; c < size; c++ {
    85  			framework.Logf("Getting results %d", c)
    86  			err := <-results
    87  			if err != nil {
    88  				errors = append(errors, err)
    89  			}
    90  		}
    91  		// Accept a 99% success rate to be able to handle infrastructure errors
    92  		if len(errors) > (size*1)/100 {
    93  			framework.Failf("Exec failed %d times with following errors : %v", len(errors), errors)
    94  		}
    95  	})
    96  })