// SetUpAt creates new directory and clones a git repo.
func (gr *gitRepo) SetUpAt(dir string) error {
if volumeutil.IsReady(gr.getMetaDir()) {
return nil
}
if gr.legacyMode {
return fmt.Errorf("legacy mode: can not create new instances")
}
// Wrap EmptyDir, let it do the setup.
wrapped, err := gr.plugin.host.NewWrapperBuilder(wrappedVolumeSpec, &gr.pod, gr.opts, gr.mounter)
if err != nil {
return err
}
if err := wrapped.SetUpAt(dir); err != nil {
return err
}
if output, err := gr.execCommand("git", []string{"clone", gr.source}, dir); err != nil {
return fmt.Errorf("failed to exec 'git clone %s': %s: %v", gr.source, output, err)
}
files, err := ioutil.ReadDir(dir)
if err != nil {
return err
}
if len(files) != 1 {
return fmt.Errorf("unexpected directory contents: %v", files)
}
if len(gr.revision) == 0 {
// Done!
volumeutil.SetReady(gr.getMetaDir())
return nil
}
subdir := path.Join(dir, files[0].Name())
if output, err := gr.execCommand("git", []string{"checkout", gr.revision}, subdir); err != nil {
return fmt.Errorf("failed to exec 'git checkout %s': %s: %v", gr.revision, output, err)
}
if output, err := gr.execCommand("git", []string{"reset", "--hard"}, subdir); err != nil {
return fmt.Errorf("failed to exec 'git reset --hard': %s: %v", output, err)
}
volumeutil.SetReady(gr.getMetaDir())
return nil
}
func (sv *secretVolume) SetUpAt(dir string) error {
isMnt, err := sv.mounter.IsMountPoint(dir)
// Getting an os.IsNotExist err from is a contingency; the directory
// may not exist yet, in which case, setup should run.
if err != nil && !os.IsNotExist(err) {
return err
}
// If the plugin readiness file is present for this volume and
// the setup dir is a mountpoint, this volume is already ready.
if volumeutil.IsReady(sv.getMetaDir()) && isMnt {
return nil
}
glog.V(3).Infof("Setting up volume %v for pod %v at %v", sv.volName, sv.pod.UID, dir)
// Wrap EmptyDir, let it do the setup.
wrapped, err := sv.plugin.host.NewWrapperBuilder(wrappedVolumeSpec, &sv.pod, *sv.opts, sv.mounter)
if err != nil {
return err
}
if err := wrapped.SetUpAt(dir); err != nil {
return err
}
qingClient := sv.plugin.host.GetQingClient()
if qingClient == nil {
return fmt.Errorf("Cannot setup secret volume %v because qing client is not configured", sv)
}
secret, err := qingClient.Secrets(sv.pod.Namespace).Get(sv.secretName)
if err != nil {
glog.Errorf("Couldn't get secret %v/%v", sv.pod.Namespace, sv.secretName)
return err
} else {
totalBytes := totalSecretBytes(secret)
glog.V(3).Infof("Received secret %v/%v containing (%v) pieces of data, %v total bytes",
sv.pod.Namespace,
sv.secretName,
len(secret.Data),
totalBytes)
}
for name, data := range secret.Data {
hostFilePath := path.Join(dir, name)
glog.V(3).Infof("Writing secret data %v/%v/%v (%v bytes) to host file %v", sv.pod.Namespace, sv.secretName, name, len(data), hostFilePath)
err := ioutil.WriteFile(hostFilePath, data, 0444)
if err != nil {
glog.Errorf("Error writing secret data to host path: %v, %v", hostFilePath, err)
return err
}
}
volumeutil.SetReady(sv.getMetaDir())
return nil
}
// Test the case where the 'ready' file has been created and the pod volume dir
// is a mountpoint. Mount should not be called.
func TestPluginIdempotent(t *testing.T) {
var (
testPodUID = types.UID("test_pod_uid2")
testVolumeName = "test_volume_name"
testNamespace = "test_secret_namespace"
testName = "test_secret_name"
volumeSpec = volumeSpec(testVolumeName, testName)
secret = secret(testNamespace, testName)
client = testclient.NewSimpleFake(&secret)
pluginMgr = volume.VolumePluginMgr{}
rootDir, host = newTestHost(t, client)
)
pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
plugin, err := pluginMgr.FindPluginByName(secretPluginName)
if err != nil {
t.Errorf("Can't find the plugin by name")
}
podVolumeDir := fmt.Sprintf("%v/pods/test_pod_uid2/volumes/qingyuan~secret/test_volume_name", rootDir)
podMetadataDir := fmt.Sprintf("%v/pods/test_pod_uid2/plugins/qingyuan~secret/test_volume_name", rootDir)
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: testPodUID}}
mounter := &mount.FakeMounter{}
mounter.MountPoints = []mount.MountPoint{
{
Path: podVolumeDir,
},
}
util.SetReady(podMetadataDir)
builder, err := plugin.NewBuilder(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{}, mounter)
if err != nil {
t.Errorf("Failed to make a new Builder: %v", err)
}
if builder == nil {
t.Errorf("Got a nil Builder")
}
volumePath := builder.GetPath()
err = builder.SetUp()
if err != nil {
t.Errorf("Failed to setup volume: %v", err)
}
if len(mounter.Log) != 0 {
t.Errorf("Unexpected calls made to mounter: %v", mounter.Log)
}
if _, err := os.Stat(volumePath); err != nil {
if !os.IsNotExist(err) {
t.Errorf("SetUp() failed unexpectedly: %v", err)
}
} else {
t.Errorf("volume path should not exist: %v", volumePath)
}
}
// Test the case where the plugin's ready file exists, but the volume dir is not a
// mountpoint, which is the state the system will be in after reboot. The dir
// should be mounter and the secret data written to it.
func TestPluginReboot(t *testing.T) {
var (
testPodUID = types.UID("test_pod_uid3")
testVolumeName = "test_volume_name"
testNamespace = "test_secret_namespace"
testName = "test_secret_name"
volumeSpec = volumeSpec(testVolumeName, testName)
secret = secret(testNamespace, testName)
client = testclient.NewSimpleFake(&secret)
pluginMgr = volume.VolumePluginMgr{}
rootDir, host = newTestHost(t, client)
)
pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
plugin, err := pluginMgr.FindPluginByName(secretPluginName)
if err != nil {
t.Errorf("Can't find the plugin by name")
}
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: testPodUID}}
builder, err := plugin.NewBuilder(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{}, &mount.FakeMounter{})
if err != nil {
t.Errorf("Failed to make a new Builder: %v", err)
}
if builder == nil {
t.Errorf("Got a nil Builder")
}
podMetadataDir := fmt.Sprintf("%v/pods/test_pod_uid3/plugins/qingyuan~secret/test_volume_name", rootDir)
util.SetReady(podMetadataDir)
volumePath := builder.GetPath()
if !strings.HasSuffix(volumePath, fmt.Sprintf("pods/test_pod_uid3/volumes/qingyuan~secret/test_volume_name")) {
t.Errorf("Got unexpected path: %s", volumePath)
}
err = builder.SetUp()
if err != nil {
t.Errorf("Failed to setup volume: %v", err)
}
if _, err := os.Stat(volumePath); err != nil {
if os.IsNotExist(err) {
t.Errorf("SetUp() failed, volume path not created: %s", volumePath)
} else {
t.Errorf("SetUp() failed: %v", err)
}
}
doTestSecretDataInVolume(volumePath, secret, t)
doTestCleanAndTeardown(plugin, testPodUID, testVolumeName, volumePath, t)
}