mirror of
https://github.com/k3s-io/kubernetes.git
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298 lines
8.0 KiB
Go
298 lines
8.0 KiB
Go
/*
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Copyright 2017 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 csi
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import (
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"fmt"
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"os"
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"testing"
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api "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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fakeclient "k8s.io/client-go/kubernetes/fake"
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utiltesting "k8s.io/client-go/util/testing"
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kstrings "k8s.io/kubernetes/pkg/util/strings"
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"k8s.io/kubernetes/pkg/volume"
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volumetest "k8s.io/kubernetes/pkg/volume/testing"
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)
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// create a plugin mgr to load plugins and setup a fake client
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func newTestPlugin(t *testing.T) (*csiPlugin, string) {
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tmpDir, err := utiltesting.MkTmpdir("csi-test")
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if err != nil {
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t.Fatalf("can't create temp dir: %v", err)
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}
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fakeClient := fakeclient.NewSimpleClientset()
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host := volumetest.NewFakeVolumeHost(
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tmpDir,
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fakeClient,
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nil,
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)
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plugMgr := &volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, host)
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plug, err := plugMgr.FindPluginByName(csiPluginName)
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if err != nil {
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t.Fatalf("can't find plugin %v", csiPluginName)
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}
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csiPlug, ok := plug.(*csiPlugin)
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if !ok {
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t.Fatalf("cannot assert plugin to be type csiPlugin")
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}
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return csiPlug, tmpDir
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}
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func makeTestPV(name string, sizeGig int, driverName, volID string) *api.PersistentVolume {
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return &api.PersistentVolume{
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ObjectMeta: meta.ObjectMeta{
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Name: name,
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Namespace: testns,
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},
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Spec: api.PersistentVolumeSpec{
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AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
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Capacity: api.ResourceList{
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api.ResourceName(api.ResourceStorage): resource.MustParse(
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fmt.Sprintf("%dGi", sizeGig),
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),
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},
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PersistentVolumeSource: api.PersistentVolumeSource{
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CSI: &api.CSIPersistentVolumeSource{
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Driver: driverName,
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VolumeHandle: volID,
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ReadOnly: false,
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},
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},
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},
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}
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}
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func TestPluginGetPluginName(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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if plug.GetPluginName() != "kubernetes.io/csi" {
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t.Errorf("unexpected plugin name %v", plug.GetPluginName())
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}
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}
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func TestPluginGetVolumeName(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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testCases := []struct {
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name string
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driverName string
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volName string
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shouldFail bool
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}{
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{"alphanum names", "testdr", "testvol", false},
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{"mixchar driver", "test.dr.cc", "testvol", false},
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{"mixchar volume", "testdr", "test-vol-name", false},
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{"mixchars all", "test-driver", "test.vol.name", false},
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}
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for _, tc := range testCases {
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t.Logf("testing: %s", tc.name)
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pv := makeTestPV("test-pv", 10, tc.driverName, tc.volName)
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spec := volume.NewSpecFromPersistentVolume(pv, false)
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name, err := plug.GetVolumeName(spec)
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if tc.shouldFail && err == nil {
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t.Fatal("GetVolumeName should fail, but got err=nil")
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}
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if name != fmt.Sprintf("%s%s%s", tc.driverName, volNameSep, tc.volName) {
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t.Errorf("unexpected volume name %s", name)
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}
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}
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}
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func TestPluginCanSupport(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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pv := makeTestPV("test-pv", 10, testDriver, testVol)
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spec := volume.NewSpecFromPersistentVolume(pv, false)
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if !plug.CanSupport(spec) {
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t.Errorf("should support CSI spec")
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}
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}
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func TestPluginConstructVolumeSpec(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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testCases := []struct {
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name string
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driverName string
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volID string
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shouldFail bool
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}{
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{"valid driver and vol", "test.csi-driver", "abc-cde", false},
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{"valid driver + vol with slash", "test.csi-driver", "a/b/c/d", false},
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{"invalid driver name", "_test.csi.driver>", "a/b/c/d", true},
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}
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for _, tc := range testCases {
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dir := getTargetPath(testPodUID, tc.driverName, tc.volID, plug.host)
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// rebuild spec
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spec, err := plug.ConstructVolumeSpec("test-pv", dir)
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if tc.shouldFail {
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if err == nil {
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t.Fatal("expecting ConstructVolumeSpec to fail, but got nil error")
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}
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continue
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}
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volID := spec.PersistentVolume.Spec.CSI.VolumeHandle
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unsanitizedVolID := kstrings.UnescapeQualifiedNameForDisk(tc.volID)
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if volID != unsanitizedVolID {
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t.Errorf("expected unsanitized volID %s, got volID %s", unsanitizedVolID, volID)
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}
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if spec.Name() != "test-pv" {
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t.Errorf("Unexpected spec name %s", spec.Name())
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}
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}
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}
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func TestPluginNewMounter(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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pv := makeTestPV("test-pv", 10, testDriver, testVol)
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mounter, err := plug.NewMounter(
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volume.NewSpecFromPersistentVolume(pv, pv.Spec.PersistentVolumeSource.CSI.ReadOnly),
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&api.Pod{ObjectMeta: meta.ObjectMeta{UID: testPodUID, Namespace: testns}},
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volume.VolumeOptions{},
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)
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if err != nil {
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t.Fatalf("Failed to make a new Mounter: %v", err)
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}
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if mounter == nil {
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t.Fatal("failed to create CSI mounter")
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}
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csiMounter := mounter.(*csiMountMgr)
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// validate mounter fields
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if csiMounter.driverName != testDriver {
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t.Error("mounter driver name not set")
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}
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if csiMounter.volumeID != testVol {
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t.Error("mounter volume id not set")
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}
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if csiMounter.pod == nil {
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t.Error("mounter pod not set")
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}
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if csiMounter.podUID == types.UID("") {
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t.Error("mounter podUID mot set")
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}
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}
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func TestPluginNewUnmounter(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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pv := makeTestPV("test-pv", 10, testDriver, testVol)
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unmounter, err := plug.NewUnmounter(pv.ObjectMeta.Name, testPodUID)
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csiUnmounter := unmounter.(*csiMountMgr)
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if err != nil {
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t.Fatalf("Failed to make a new Mounter: %v", err)
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}
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if csiUnmounter == nil {
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t.Fatal("failed to create CSI mounter")
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}
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if csiUnmounter.podUID != testPodUID {
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t.Error("podUID not set")
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}
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}
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func TestValidateDriverName(t *testing.T) {
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testCases := []struct {
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name string
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driverName string
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valid bool
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}{
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{"ok no punctuations", "comgooglestoragecsigcepd", true},
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{"ok dot only", "io.kubernetes.storage.csi.flex", true},
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{"ok dash only", "io-kubernetes-storage-csi-flex", true},
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{"ok underscore only", "io_kubernetes_storage_csi_flex", true},
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{"ok dot underscores", "io.kubernetes.storage_csi.flex", true},
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{"ok dot dash underscores", "io.kubernetes-storage.csi_flex", true},
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{"invalid length 0", "", false},
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{"invalid length > 63", "comgooglestoragecsigcepdcomgooglestoragecsigcepdcomgooglestoragecsigcepdcomgooglestoragecsigcepd", false},
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{"invalid start char", "_comgooglestoragecsigcepd", false},
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{"invalid end char", "comgooglestoragecsigcepd/", false},
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{"invalid separators", "com/google/storage/csi~gcepd", false},
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}
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for _, tc := range testCases {
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t.Logf("test case: %v", tc.name)
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drValid := isDriverNameValid(tc.driverName)
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if tc.valid != drValid {
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t.Errorf("expecting driverName %s as valid=%t, but got valid=%t", tc.driverName, tc.valid, drValid)
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}
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}
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}
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func TestPluginNewAttacher(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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attacher, err := plug.NewAttacher()
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if err != nil {
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t.Fatalf("failed to create new attacher: %v", err)
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}
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csiAttacher := attacher.(*csiAttacher)
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if csiAttacher.plugin == nil {
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t.Error("plugin not set for attacher")
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}
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if csiAttacher.k8s == nil {
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t.Error("Kubernetes client not set for attacher")
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}
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}
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func TestPluginNewDetacher(t *testing.T) {
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plug, tmpDir := newTestPlugin(t)
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defer os.RemoveAll(tmpDir)
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detacher, err := plug.NewDetacher()
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if err != nil {
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t.Fatalf("failed to create new detacher: %v", err)
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}
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csiDetacher := detacher.(*csiAttacher)
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if csiDetacher.plugin == nil {
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t.Error("plugin not set for detacher")
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}
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if csiDetacher.k8s == nil {
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t.Error("Kubernetes client not set for attacher")
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}
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}
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