remote_image_test.go

Documentation: k8s.io/kubernetes/pkg/kubelet/cri/remote

     1  /*
     2  Copyright 2022 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 remote
    18  
    19  import (
    20  	"context"
    21  	"os"
    22  	"testing"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  	"github.com/stretchr/testify/require"
    26  	sdktrace "go.opentelemetry.io/otel/sdk/trace"
    27  	"go.opentelemetry.io/otel/sdk/trace/tracetest"
    28  	oteltrace "go.opentelemetry.io/otel/trace"
    29  	utilfeature "k8s.io/apiserver/pkg/util/feature"
    30  	featuregatetesting "k8s.io/component-base/featuregate/testing"
    31  	internalapi "k8s.io/cri-api/pkg/apis"
    32  	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
    33  	"k8s.io/kubernetes/pkg/features"
    34  	"k8s.io/kubernetes/pkg/kubelet/util"
    35  )
    36  
    37  func createRemoteImageServiceWithTracerProvider(endpoint string, tp oteltrace.TracerProvider, t *testing.T) internalapi.ImageManagerService {
    38  	runtimeService, err := NewRemoteImageService(endpoint, defaultConnectionTimeout, tp)
    39  	require.NoError(t, err)
    40  
    41  	return runtimeService
    42  }
    43  
    44  func createRemoteImageServiceWithoutTracerProvider(endpoint string, t *testing.T) internalapi.ImageManagerService {
    45  	runtimeService, err := NewRemoteImageService(endpoint, defaultConnectionTimeout, oteltrace.NewNoopTracerProvider())
    46  	require.NoError(t, err)
    47  
    48  	return runtimeService
    49  }
    50  
    51  func TestImageServiceSpansWithTP(t *testing.T) {
    52  	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.KubeletTracing, true)()
    53  	fakeRuntime, endpoint := createAndStartFakeRemoteRuntime(t)
    54  	defer func() {
    55  		fakeRuntime.Stop()
    56  		// clear endpoint file
    57  		if addr, _, err := util.GetAddressAndDialer(endpoint); err == nil {
    58  			if _, err := os.Stat(addr); err == nil {
    59  				os.Remove(addr)
    60  			}
    61  		}
    62  	}()
    63  	exp := tracetest.NewInMemoryExporter()
    64  	tp := sdktrace.NewTracerProvider(
    65  		sdktrace.WithBatcher(exp),
    66  	)
    67  	ctx := context.Background()
    68  	imgSvc := createRemoteImageServiceWithTracerProvider(endpoint, tp, t)
    69  	imgRef, err := imgSvc.PullImage(ctx, &runtimeapi.ImageSpec{Image: "busybox"}, nil, nil)
    70  	assert.NoError(t, err)
    71  	assert.Equal(t, "busybox", imgRef)
    72  	require.NoError(t, err)
    73  	err = tp.ForceFlush(ctx)
    74  	require.NoError(t, err)
    75  	assert.NotEmpty(t, exp.GetSpans())
    76  }
    77  
    78  func TestImageServiceSpansWithoutTP(t *testing.T) {
    79  	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.KubeletTracing, true)()
    80  	fakeRuntime, endpoint := createAndStartFakeRemoteRuntime(t)
    81  	defer func() {
    82  		fakeRuntime.Stop()
    83  		// clear endpoint file
    84  		if addr, _, err := util.GetAddressAndDialer(endpoint); err == nil {
    85  			if _, err := os.Stat(addr); err == nil {
    86  				os.Remove(addr)
    87  			}
    88  		}
    89  	}()
    90  	exp := tracetest.NewInMemoryExporter()
    91  	tp := sdktrace.NewTracerProvider(
    92  		sdktrace.WithBatcher(exp),
    93  	)
    94  	ctx := context.Background()
    95  	imgSvc := createRemoteImageServiceWithoutTracerProvider(endpoint, t)
    96  	imgRef, err := imgSvc.PullImage(ctx, &runtimeapi.ImageSpec{Image: "busybox"}, nil, nil)
    97  	assert.NoError(t, err)
    98  	assert.Equal(t, "busybox", imgRef)
    99  	require.NoError(t, err)
   100  	err = tp.ForceFlush(ctx)
   101  	require.NoError(t, err)
   102  	assert.Empty(t, exp.GetSpans())
   103  }
   104
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