9d8f994d4e
fakeVolumeHost previously implemented both the KubeletVolumeHost and AttachDetachVolumeHost interfaces. This design makes it difficult to test the CSIAttacher since it behaves differently depending on what type of VolumeHost is supplied.
126 lines
3.9 KiB
Go
126 lines
3.9 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"testing"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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k8stypes "k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/kubelet/volumemanager/cache"
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"k8s.io/kubernetes/pkg/volume"
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volumetesting "k8s.io/kubernetes/pkg/volume/testing"
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"k8s.io/kubernetes/pkg/volume/util"
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"k8s.io/kubernetes/pkg/volume/util/operationexecutor"
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)
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func TestMetricCollection(t *testing.T) {
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volumePluginMgr, fakePlugin := volumetesting.GetTestKubeletVolumePluginMgr(t)
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dsw := cache.NewDesiredStateOfWorld(volumePluginMgr)
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asw := cache.NewActualStateOfWorld(k8stypes.NodeName("node-name"), volumePluginMgr)
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod1",
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UID: "pod1uid",
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},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{
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{
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Name: "volume-name",
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "fake-device1",
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},
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},
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},
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},
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},
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}
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volumeSpec := &volume.Spec{Volume: &pod.Spec.Volumes[0]}
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podName := util.GetUniquePodName(pod)
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// Add one volume to DesiredStateOfWorld
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generatedVolumeName, err := dsw.AddPodToVolume(podName, pod, volumeSpec, volumeSpec.Name(), "")
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if err != nil {
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t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
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}
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mounter, err := fakePlugin.NewMounter(volumeSpec, pod, volume.VolumeOptions{})
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if err != nil {
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t.Fatalf("NewMounter failed. Expected: <no error> Actual: <%v>", err)
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}
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mapper, err := fakePlugin.NewBlockVolumeMapper(volumeSpec, pod, volume.VolumeOptions{})
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if err != nil {
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t.Fatalf("NewBlockVolumeMapper failed. Expected: <no error> Actual: <%v>", err)
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}
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// Add one volume to ActualStateOfWorld
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devicePath := "fake/device/path"
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err = asw.MarkVolumeAsAttached("", volumeSpec, "", devicePath)
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if err != nil {
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t.Fatalf("MarkVolumeAsAttached failed. Expected: <no error> Actual: <%v>", err)
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}
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markVolumeOpts := operationexecutor.MarkVolumeOpts{
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PodName: podName,
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PodUID: pod.UID,
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VolumeName: generatedVolumeName,
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Mounter: mounter,
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BlockVolumeMapper: mapper,
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OuterVolumeSpecName: volumeSpec.Name(),
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VolumeSpec: volumeSpec,
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VolumeMountState: operationexecutor.VolumeMounted,
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}
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err = asw.AddPodToVolume(markVolumeOpts)
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if err != nil {
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t.Fatalf("AddPodToVolume failed. Expected: <no error> Actual: <%v>", err)
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}
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metricCollector := &totalVolumesCollector{asw: asw, dsw: dsw, pluginMgr: volumePluginMgr}
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// Check if getVolumeCount returns correct data
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count := metricCollector.getVolumeCount()
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if len(count) != 2 {
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t.Errorf("getVolumeCount failed. Expected <2> states, got <%d>", len(count))
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}
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dswCount, ok := count["desired_state_of_world"]
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if !ok {
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t.Errorf("getVolumeCount failed. Expected <desired_state_of_world>, got nothing")
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}
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fakePluginCount := dswCount["fake-plugin"]
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if fakePluginCount != 1 {
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t.Errorf("getVolumeCount failed. Expected <1> fake-plugin volume in DesiredStateOfWorld, got <%d>",
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fakePluginCount)
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}
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aswCount, ok := count["actual_state_of_world"]
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if !ok {
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t.Errorf("getVolumeCount failed. Expected <actual_state_of_world>, got nothing")
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}
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fakePluginCount = aswCount["fake-plugin"]
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if fakePluginCount != 1 {
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t.Errorf("getVolumeCount failed. Expected <1> fake-plugin volume in ActualStateOfWorld, got <%d>",
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fakePluginCount)
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}
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}
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