remote_runtime_test.go

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

     1  /*
     2  Copyright 2017 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  	"time"
    24  
    25  	sdktrace "go.opentelemetry.io/otel/sdk/trace"
    26  	"go.opentelemetry.io/otel/sdk/trace/tracetest"
    27  	oteltrace "go.opentelemetry.io/otel/trace"
    28  
    29  	"github.com/stretchr/testify/assert"
    30  	"github.com/stretchr/testify/require"
    31  	utilfeature "k8s.io/apiserver/pkg/util/feature"
    32  	featuregatetesting "k8s.io/component-base/featuregate/testing"
    33  	internalapi "k8s.io/cri-api/pkg/apis"
    34  	apitest "k8s.io/cri-api/pkg/apis/testing"
    35  	"k8s.io/kubernetes/pkg/features"
    36  	fakeremote "k8s.io/kubernetes/pkg/kubelet/cri/remote/fake"
    37  	"k8s.io/kubernetes/pkg/kubelet/util"
    38  )
    39  
    40  const (
    41  	defaultConnectionTimeout = 15 * time.Second
    42  )
    43  
    44  // createAndStartFakeRemoteRuntime creates and starts fakeremote.RemoteRuntime.
    45  // It returns the RemoteRuntime, endpoint on success.
    46  // Users should call fakeRuntime.Stop() to cleanup the server.
    47  func createAndStartFakeRemoteRuntime(t *testing.T) (*fakeremote.RemoteRuntime, string) {
    48  	endpoint, err := fakeremote.GenerateEndpoint()
    49  	require.NoError(t, err)
    50  
    51  	fakeRuntime := fakeremote.NewFakeRemoteRuntime()
    52  	fakeRuntime.Start(endpoint)
    53  
    54  	return fakeRuntime, endpoint
    55  }
    56  
    57  func createRemoteRuntimeService(endpoint string, t *testing.T) internalapi.RuntimeService {
    58  	runtimeService, err := NewRemoteRuntimeService(endpoint, defaultConnectionTimeout, oteltrace.NewNoopTracerProvider())
    59  
    60  	require.NoError(t, err)
    61  
    62  	return runtimeService
    63  }
    64  
    65  func createRemoteRuntimeServiceWithTracerProvider(endpoint string, tp oteltrace.TracerProvider, t *testing.T) internalapi.RuntimeService {
    66  	runtimeService, err := NewRemoteRuntimeService(endpoint, defaultConnectionTimeout, tp)
    67  	require.NoError(t, err)
    68  
    69  	return runtimeService
    70  }
    71  
    72  func TestGetSpans(t *testing.T) {
    73  	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.KubeletTracing, true)()
    74  	fakeRuntime, endpoint := createAndStartFakeRemoteRuntime(t)
    75  	defer func() {
    76  		fakeRuntime.Stop()
    77  		// clear endpoint file
    78  		if addr, _, err := util.GetAddressAndDialer(endpoint); err == nil {
    79  			if _, err := os.Stat(addr); err == nil {
    80  				os.Remove(addr)
    81  			}
    82  		}
    83  	}()
    84  	exp := tracetest.NewInMemoryExporter()
    85  	tp := sdktrace.NewTracerProvider(
    86  		sdktrace.WithBatcher(exp),
    87  	)
    88  	ctx := context.Background()
    89  	rtSvc := createRemoteRuntimeServiceWithTracerProvider(endpoint, tp, t)
    90  	_, err := rtSvc.Version(ctx, apitest.FakeVersion)
    91  	require.NoError(t, err)
    92  	err = tp.ForceFlush(ctx)
    93  	require.NoError(t, err)
    94  	assert.NotEmpty(t, exp.GetSpans())
    95  }
    96  
    97  func TestVersion(t *testing.T) {
    98  	fakeRuntime, endpoint := createAndStartFakeRemoteRuntime(t)
    99  	defer func() {
   100  		fakeRuntime.Stop()
   101  		// clear endpoint file
   102  		if addr, _, err := util.GetAddressAndDialer(endpoint); err == nil {
   103  			if _, err := os.Stat(addr); err == nil {
   104  				os.Remove(addr)
   105  			}
   106  		}
   107  	}()
   108  
   109  	ctx := context.Background()
   110  	rtSvc := createRemoteRuntimeService(endpoint, t)
   111  	version, err := rtSvc.Version(ctx, apitest.FakeVersion)
   112  	require.NoError(t, err)
   113  	assert.Equal(t, apitest.FakeVersion, version.Version)
   114  	assert.Equal(t, apitest.FakeRuntimeName, version.RuntimeName)
   115  }
   116
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