request_timeout.go

Documentation: k8s.io/kubernetes/test/e2e/apimachinery

     1  /*
     2  Copyright 2020 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  package apimachinery
    18  
    19  import (
    20  	"context"
    21  	"io"
    22  	"net/http"
    23  	"strings"
    24  
    25  	"github.com/onsi/ginkgo/v2"
    26  	"k8s.io/client-go/rest"
    27  	"k8s.io/kubernetes/test/e2e/framework"
    28  	admissionapi "k8s.io/pod-security-admission/api"
    29  )
    30  
    31  const (
    32  	invalidTimeoutMessageExpected = "invalid timeout specified in the request URL"
    33  )
    34  
    35  var _ = SIGDescribe("Server request timeout", func() {
    36  	f := framework.NewDefaultFramework("request-timeout")
    37  	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
    38  
    39  	ginkgo.It("should return HTTP status code 400 if the user specifies an invalid timeout in the request URL", func(ctx context.Context) {
    40  		rt := getRoundTripper(f)
    41  		req := newRequest(f, "invalid")
    42  
    43  		response, err := rt.RoundTrip(req)
    44  		framework.ExpectNoError(err)
    45  		defer response.Body.Close()
    46  
    47  		if response.StatusCode != http.StatusBadRequest {
    48  			framework.Failf("expected HTTP status code: %d, but got: %d", http.StatusBadRequest, response.StatusCode)
    49  		}
    50  
    51  		messageGot := readBody(response)
    52  		if !strings.Contains(messageGot, invalidTimeoutMessageExpected) {
    53  			framework.Failf("expected HTTP status message to contain: %s, but got: %s", invalidTimeoutMessageExpected, messageGot)
    54  		}
    55  	})
    56  
    57  	ginkgo.It("the request should be served with a default timeout if the specified timeout in the request URL exceeds maximum allowed", func(ctx context.Context) {
    58  		rt := getRoundTripper(f)
    59  		// Choose a timeout that exceeds the default timeout (60s) enforced by the apiserver
    60  		req := newRequest(f, "3m")
    61  
    62  		response, err := rt.RoundTrip(req)
    63  		framework.ExpectNoError(err)
    64  		defer response.Body.Close()
    65  
    66  		if response.StatusCode != http.StatusOK {
    67  			framework.Failf("expected HTTP status code: %d, but got: %d", http.StatusOK, response.StatusCode)
    68  		}
    69  	})
    70  
    71  	ginkgo.It("default timeout should be used if the specified timeout in the request URL is 0s", func(ctx context.Context) {
    72  		rt := getRoundTripper(f)
    73  		req := newRequest(f, "0s")
    74  
    75  		response, err := rt.RoundTrip(req)
    76  		framework.ExpectNoError(err)
    77  		defer response.Body.Close()
    78  
    79  		if response.StatusCode != http.StatusOK {
    80  			framework.Failf("expected HTTP status code: %d, but got: %d", http.StatusOK, response.StatusCode)
    81  		}
    82  	})
    83  })
    84  
    85  func getRoundTripper(f *framework.Framework) http.RoundTripper {
    86  	config := rest.CopyConfig(f.ClientConfig())
    87  
    88  	// ensure we don't enforce any transport timeout from the client side.
    89  	config.Timeout = 0
    90  
    91  	roundTripper, err := rest.TransportFor(config)
    92  	framework.ExpectNoError(err)
    93  
    94  	return roundTripper
    95  }
    96  
    97  func newRequest(f *framework.Framework, timeout string) *http.Request {
    98  	req, err := http.NewRequest(http.MethodGet, f.ClientSet.CoreV1().RESTClient().Get().
    99  		Param("timeout", timeout).AbsPath("version").URL().String(), nil)
   100  	framework.ExpectNoError(err)
   101  
   102  	return req
   103  }
   104  
   105  func readBody(response *http.Response) string {
   106  	raw, err := io.ReadAll(response.Body)
   107  	framework.ExpectNoError(err)
   108  
   109  	return string(raw)
   110  }
   111
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