Example #1
0
func TestPlugin(t *testing.T) {
	plug := makePluginUnderTest(t, "kubernetes.io/empty-dir")

	spec := &api.Volume{
		Name:         "vol1",
		VolumeSource: api.VolumeSource{EmptyDir: &api.EmptyDirVolumeSource{Medium: api.StorageMediumDefault}},
	}
	mounter := mount.FakeMounter{}
	mountDetector := fakeMountDetector{}
	pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
	builder, err := plug.(*emptyDirPlugin).newBuilderInternal(volume.NewSpecFromVolume(spec), pod, &mounter, &mountDetector, volume.VolumeOptions{""})
	if err != nil {
		t.Errorf("Failed to make a new Builder: %v", err)
	}
	if builder == nil {
		t.Errorf("Got a nil Builder")
	}

	volPath := builder.GetPath()
	if volPath != path.Join(basePath, "pods/poduid/volumes/kubernetes.io~empty-dir/vol1") {
		t.Errorf("Got unexpected path: %s", volPath)
	}

	if err := builder.SetUp(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}
	if _, err := os.Stat(volPath); err != nil {
		if os.IsNotExist(err) {
			t.Errorf("SetUp() failed, volume path not created: %s", volPath)
		} else {
			t.Errorf("SetUp() failed: %v", err)
		}
	}
	if len(mounter.Log) != 0 {
		t.Errorf("Expected 0 mounter calls, got %#v", mounter.Log)
	}
	mounter.ResetLog()

	cleaner, err := plug.(*emptyDirPlugin).newCleanerInternal("vol1", types.UID("poduid"), &mounter, &fakeMountDetector{})
	if err != nil {
		t.Errorf("Failed to make a new Cleaner: %v", err)
	}
	if cleaner == nil {
		t.Errorf("Got a nil Cleaner")
	}

	if err := cleaner.TearDown(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}
	if _, err := os.Stat(volPath); err == nil {
		t.Errorf("TearDown() failed, volume path still exists: %s", volPath)
	} else if !os.IsNotExist(err) {
		t.Errorf("SetUp() failed: %v", err)
	}
	if len(mounter.Log) != 0 {
		t.Errorf("Expected 0 mounter calls, got %#v", mounter.Log)
	}
	mounter.ResetLog()
}
func TestPluginTmpfs(t *testing.T) {
	plug := makePluginUnderTest(t, "kubernetes.io/empty-dir")

	spec := &api.Volume{
		Name:         "vol1",
		VolumeSource: api.VolumeSource{EmptyDir: &api.EmptyDirVolumeSource{Medium: api.StorageTypeMemory}},
	}
	mounter := mount.FakeMounter{}
	mountDetector := fakeMountDetector{}
	builder, err := plug.(*emptyDirPlugin).newBuilderInternal(volume.NewSpecFromVolume(spec), &api.ObjectReference{UID: types.UID("poduid")}, &mounter, &mountDetector, volume.VolumeOptions{""})
	if err != nil {
		t.Errorf("Failed to make a new Builder: %v", err)
	}
	if builder == nil {
		t.Errorf("Got a nil Builder")
	}

	volPath := builder.GetPath()
	if volPath != path.Join(basePath, "pods/poduid/volumes/kubernetes.io~empty-dir/vol1") {
		t.Errorf("Got unexpected path: %s", volPath)
	}

	if err := builder.SetUp(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}
	if _, err := os.Stat(volPath); err != nil {
		if os.IsNotExist(err) {
			t.Errorf("SetUp() failed, volume path not created: %s", volPath)
		} else {
			t.Errorf("SetUp() failed: %v", err)
		}
	}
	if len(mounter.Log) != 1 {
		t.Errorf("Expected 1 mounter call, got %#v", mounter.Log)
	} else {
		if mounter.Log[0].Action != mount.FakeActionMount || mounter.Log[0].FSType != "tmpfs" {
			t.Errorf("Unexpected mounter action: %#v", mounter.Log[0])
		}
	}
	mounter.ResetLog()

	cleaner, err := plug.(*emptyDirPlugin).newCleanerInternal("vol1", types.UID("poduid"), &mounter, &fakeMountDetector{mediumMemory, true})
	if err != nil {
		t.Errorf("Failed to make a new Cleaner: %v", err)
	}
	if cleaner == nil {
		t.Errorf("Got a nil Cleaner")
	}

	if err := cleaner.TearDown(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}
	if _, err := os.Stat(volPath); err == nil {
		t.Errorf("TearDown() failed, volume path still exists: %s", volPath)
	} else if !os.IsNotExist(err) {
		t.Errorf("SetUp() failed: %v", err)
	}
	if len(mounter.Log) != 1 {
		t.Errorf("Expected 1 mounter call, got %d (%v)", len(mounter.Log), mounter.Log)
	} else {
		if mounter.Log[0].Action != mount.FakeActionUnmount {
			t.Errorf("Unexpected mounter action: %#v", mounter.Log[0])
		}
	}
	mounter.ResetLog()
}
Example #3
0
// doTestPlugin sets up a volume and tears it back down.
func doTestPlugin(t *testing.T, config pluginTestConfig) {
	basePath, err := ioutil.TempDir("/tmp", "emptydir_volume_test")
	if err != nil {
		t.Fatalf("can't make a temp rootdir")
	}

	var (
		volumePath  = path.Join(basePath, "pods/poduid/volumes/kubernetes.io~empty-dir/test-volume")
		metadataDir = path.Join(basePath, "pods/poduid/plugins/kubernetes.io~empty-dir/test-volume")

		plug       = makePluginUnderTest(t, "kubernetes.io/empty-dir", basePath)
		volumeName = "test-volume"
		spec       = &api.Volume{
			Name:         volumeName,
			VolumeSource: api.VolumeSource{EmptyDir: &api.EmptyDirVolumeSource{Medium: config.medium}},
		}

		mounter       = mount.FakeMounter{}
		mountDetector = fakeMountDetector{}
		pod           = &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
		fakeChconRnr  = &fakeChconRunner{}
	)

	// Set up the SELinux options on the pod
	if config.SELinuxOptions != nil {
		pod.Spec = api.PodSpec{
			Containers: []api.Container{
				{
					SecurityContext: &api.SecurityContext{
						SELinuxOptions: config.SELinuxOptions,
					},
					VolumeMounts: []api.VolumeMount{
						{
							Name: volumeName,
						},
					},
				},
			},
		}
	}

	if config.idempotent {
		mounter.MountPoints = []mount.MountPoint{
			{
				Path: volumePath,
			},
		}
		util.SetReady(metadataDir)
	}

	builder, err := plug.(*emptyDirPlugin).newBuilderInternal(volume.NewSpecFromVolume(spec),
		pod,
		&mounter,
		&mountDetector,
		volume.VolumeOptions{config.rootContext},
		fakeChconRnr)
	if err != nil {
		t.Errorf("Failed to make a new Builder: %v", err)
	}
	if builder == nil {
		t.Errorf("Got a nil Builder")
	}

	volPath := builder.GetPath()
	if volPath != volumePath {
		t.Errorf("Got unexpected path: %s", volPath)
	}

	if err := builder.SetUp(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}

	// Stat the directory and check the permission bits
	fileinfo, err := os.Stat(volPath)
	if !config.idempotent {
		if err != nil {
			if os.IsNotExist(err) {
				t.Errorf("SetUp() failed, volume path not created: %s", volPath)
			} else {
				t.Errorf("SetUp() failed: %v", err)
			}
		}
		if e, a := perm, fileinfo.Mode().Perm(); e != a {
			t.Errorf("Unexpected file mode for %v: expected: %v, got: %v", volPath, e, a)
		}
	} else if err == nil {
		// If this test is for idempotency and we were able
		// to stat the volume path, it's an error.
		t.Errorf("Volume directory was created unexpectedly")
	}

	// Check the number of chcons during setup
	if e, a := config.expectedChcons, len(fakeChconRnr.requests); e != a {
		t.Errorf("Expected %v chcon calls, got %v", e, a)
	}
	if config.expectedChcons == 1 {
		if e, a := config.expectedSELinuxContext, fakeChconRnr.requests[0].context; e != a {
			t.Errorf("Unexpected chcon context argument; expected: %v, got: %v", e, a)
		}
		if e, a := volPath, fakeChconRnr.requests[0].dir; e != a {
			t.Errorf("Unexpected chcon path argument: expected: %v, got: %v", e, a)
		}
	}

	// Check the number of mounts performed during setup
	if e, a := config.expectedSetupMounts, len(mounter.Log); e != a {
		t.Errorf("Expected %v mounter calls during setup, got %v", e, a)
	} else if config.expectedSetupMounts == 1 &&
		(mounter.Log[0].Action != mount.FakeActionMount || mounter.Log[0].FSType != "tmpfs") {
		t.Errorf("Unexpected mounter action during setup: %#v", mounter.Log[0])
	}
	mounter.ResetLog()

	// Make a cleaner for the volume
	teardownMedium := mediumUnknown
	if config.medium == api.StorageMediumMemory {
		teardownMedium = mediumMemory
	}
	cleanerMountDetector := &fakeMountDetector{medium: teardownMedium, isMount: config.shouldBeMountedBeforeTeardown}
	cleaner, err := plug.(*emptyDirPlugin).newCleanerInternal(volumeName, types.UID("poduid"), &mounter, cleanerMountDetector)
	if err != nil {
		t.Errorf("Failed to make a new Cleaner: %v", err)
	}
	if cleaner == nil {
		t.Errorf("Got a nil Cleaner")
	}

	// Tear down the volume
	if err := cleaner.TearDown(); err != nil {
		t.Errorf("Expected success, got: %v", err)
	}
	if _, err := os.Stat(volPath); err == nil {
		t.Errorf("TearDown() failed, volume path still exists: %s", volPath)
	} else if !os.IsNotExist(err) {
		t.Errorf("SetUp() failed: %v", err)
	}

	// Check the number of mounter calls during tardown
	if e, a := config.expectedTeardownMounts, len(mounter.Log); e != a {
		t.Errorf("Expected %v mounter calls during teardown, got %v", e, a)
	} else if config.expectedTeardownMounts == 1 && mounter.Log[0].Action != mount.FakeActionUnmount {
		t.Errorf("Unexpected mounter action during teardown: %#v", mounter.Log[0])
	}
	mounter.ResetLog()
}