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system_rollout_controller.go
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system_rollout_controller.go
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package controller
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"reflect"
"sync"
"time"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
"golang.org/x/time/rate"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/workqueue"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
policyv1beta1 "k8s.io/api/policy/v1beta1"
rbacv1 "k8s.io/api/rbac/v1"
storagev1 "k8s.io/api/storage/v1"
apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
serializer "k8s.io/apimachinery/pkg/runtime/serializer"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientset "k8s.io/client-go/kubernetes"
kubernetesscheme "k8s.io/client-go/kubernetes/scheme"
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
"github.com/longhorn/backupstore"
systembackupstore "github.com/longhorn/backupstore/systembackup"
"github.com/longhorn/longhorn-manager/constant"
"github.com/longhorn/longhorn-manager/datastore"
"github.com/longhorn/longhorn-manager/engineapi"
"github.com/longhorn/longhorn-manager/types"
"github.com/longhorn/longhorn-manager/util"
longhorn "github.com/longhorn/longhorn-manager/k8s/pkg/apis/longhorn/v1beta2"
)
const (
SystemRolloutControllerName = "longhorn-system-rollout"
SystemRolloutNamePrefix = "longhorn-system-rollout-"
SystemRolloutErrFailedConvertToObjectFmt = "failed converting %v to %v object"
SystemRolloutErrFailedToCreateFmt = "failed to create item: %v %v"
SystemRolloutErrMissingDependencyFmt = "cannot rollout %v due to missing dependency: %v %v"
SystemRolloutMsgDownloadedFmt = "Downloaded from %v"
SystemRolloutMsgIdentical = "identical"
SystemRolloutMsgInitializedFmt = "Initialized system rollout for %v"
SystemRolloutMsgRestoringFmt = "Restoring %v"
SystemRolloutMsgRequeueNextPhaseFmt = "Requeue for next phase: %v"
SystemRolloutMsgRequeueDueToFmt = "Requeue due to %v"
SystemRolloutMsgUnpackedFmt = "Unpacked %v"
SystemRolloutMsgCompleted = "System rollout completed"
SystemRolloutMsgCreating = "System rollout creating"
SystemRolloutMsgIgnoreItemFmt = "System rollout ignoring item: %v"
SystemRolloutMsgRestoredItem = "System rollout restored item"
SystemRolloutMsgRestoredKindFmt = "System rollout restored Kind: %v"
SystemRolloutMsgUpdating = "System rollout updating"
)
var (
SystemRolloutMsgSkipIdentical = fmt.Sprintf(SystemRolloutMsgIgnoreItemFmt, SystemRolloutMsgIdentical)
)
type systemRolloutRecordType string
const (
systemRolloutRecordTypeError = systemRolloutRecordType("error")
systemRolloutRecordTypeNone = systemRolloutRecordType("")
systemRolloutRecordTypeNormal = systemRolloutRecordType("normal")
)
type systemRolloutRecord struct {
nextState longhorn.SystemRestoreState
recordType systemRolloutRecordType
message string
reason string
}
type extractedResources struct {
customResourceDefinitionList *apiextensionsv1.CustomResourceDefinitionList
clusterRoleList *rbacv1.ClusterRoleList
clusterRoleBindingList *rbacv1.ClusterRoleBindingList
roleList *rbacv1.RoleList
roleBindingList *rbacv1.RoleBindingList
daemonSetList *appsv1.DaemonSetList
deploymentList *appsv1.DeploymentList
configMapList *corev1.ConfigMapList
persistentVolumeList *corev1.PersistentVolumeList
persistentVolumeClaimList *corev1.PersistentVolumeClaimList
serviceList *corev1.ServiceList
serviceAccountList *corev1.ServiceAccountList
storageClassList *storagev1.StorageClassList
podSecurityPolicyList *policyv1beta1.PodSecurityPolicyList
engineImageList *longhorn.EngineImageList
recurringJobList *longhorn.RecurringJobList
settingList *longhorn.SettingList
volumeList *longhorn.VolumeList
}
type SystemRolloutController struct {
*baseController
controllerID string
stopCh chan struct{}
kubeClient clientset.Interface
eventRecorder record.EventRecorder
ds *datastore.DataStore
backupTargetClient engineapi.SystemBackupOperationInterface
backupTargetURL string
backupTargetCredential map[string]string
systemRestore *longhorn.SystemRestore
systemRestoreName string
systemRestoreVersion string
systemRestoredAt string
systemRestoredURL string
downloadPath string
engineImage string
extractedResources
cacheErrors util.MultiError
cacheSyncs []cache.InformerSynced
}
func NewSystemRolloutController(
systemRestoreName string,
logger logrus.FieldLogger,
controllerID string,
ds *datastore.DataStore,
scheme *runtime.Scheme,
stopCh chan struct{},
kubeClient clientset.Interface,
extensionsClient apiextensionsclientset.Interface,
) *SystemRolloutController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(logrus.Infof)
// TODO: remove the wrapper when every clients have moved to use the clientset.
eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{
Interface: v1core.New(kubeClient.CoreV1().RESTClient()).Events(""),
})
c := &SystemRolloutController{
baseController: newBaseControllerWithQueue(SystemRolloutControllerName, logger,
workqueue.NewNamedRateLimitingQueue(workqueue.NewMaxOfRateLimiter(
workqueue.NewItemExponentialFailureRateLimiter(100*time.Millisecond, 2*time.Second),
&workqueue.BucketRateLimiter{Limiter: rate.NewLimiter(rate.Limit(100), 1000)},
), SystemRolloutControllerName),
),
controllerID: controllerID,
stopCh: stopCh,
kubeClient: kubeClient,
ds: ds,
eventRecorder: eventBroadcaster.NewRecorder(scheme, corev1.EventSource{Component: SystemRolloutControllerName + "-controller"}),
systemRestoreName: systemRestoreName,
}
ds.SystemRestoreInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { c.enqueue() },
UpdateFunc: func(old, cur interface{}) { c.enqueue() },
})
c.cacheSyncs = append(c.cacheSyncs, ds.SystemRestoreInformer.HasSynced)
return c
}
func (c *SystemRolloutController) enqueue() {
c.queue.Add("system-rollout")
}
func (c *SystemRolloutController) Run() error {
defer utilruntime.HandleCrash()
defer c.queue.ShutDown()
if !cache.WaitForNamedCacheSync("longhorn system rollout", c.stopCh, c.cacheSyncs...) {
return fmt.Errorf("failed to sync informers")
}
startTime := time.Now()
defer func() {
log := c.logger.WithField("runtime", time.Since(startTime))
log.Info("Closing")
}()
go wait.Until(c.worker, time.Second, c.stopCh)
<-c.stopCh
return nil
}
func (c *SystemRolloutController) worker() {
for c.processNextWorkItem() {
}
}
func (c *SystemRolloutController) processNextWorkItem() bool {
key, quit := c.queue.Get()
if quit {
return false
}
defer c.queue.Done(key)
err := c.syncSystemRollout()
c.handleErr(err, key)
return true
}
func (c *SystemRolloutController) syncSystemRollout() error {
err := c.syncController()
if err != nil {
return err
}
defer func() {
log := c.getLoggerForSystemRollout()
systemRestore, err := c.ds.GetSystemRestore(c.systemRestoreName)
if err != nil {
log.WithError(err).Error("Failed to get SystemRestore")
close(c.stopCh)
}
notCompleted := systemRestore.Status.State != longhorn.SystemRestoreStateCompleted
notFailed := systemRestore.Status.State != longhorn.SystemRestoreStateError
if notCompleted && notFailed {
log.Infof(SystemRolloutMsgRequeueNextPhaseFmt, systemRestore.Status.State)
c.enqueue()
return
}
_, err = c.ds.RemoveSystemRestoreLabel(systemRestore)
if err != nil {
message := fmt.Sprintf("failed to remove SystemRestore label after the restore state %v", systemRestore.Status.State)
log.WithError(err).Warnf(SystemRolloutMsgRequeueDueToFmt, message)
c.enqueue()
return
}
log.Info("Shutting down")
close(c.stopCh)
}()
return c.systemRollout()
}
func (c *SystemRolloutController) handleErr(err error, key interface{}) {
if err == nil {
c.queue.Forget(key)
return
}
handleReconcileErrorLogging(c.logger, err, "Worker error")
c.queue.AddRateLimited(key)
}
func (c *SystemRolloutController) handleStatusUpdate(record *systemRolloutRecord, existing *longhorn.SystemRestore, err error, log logrus.FieldLogger) {
if err != nil {
c.cacheErrors.Append(util.NewMultiError(err.Error()))
}
if record.recordType == systemRolloutRecordTypeError && err != nil {
c.cacheErrors.Append(util.NewMultiError(err.Error()))
}
if len(c.cacheErrors) != 0 {
if record.reason == "" {
record.reason = longhorn.SystemRestoreConditionReasonRestore
}
if record.message == "" {
record.message = longhorn.SystemRestoreConditionMessageFailed
}
c.recordErrorState(record, c.systemRestore, c.cacheErrors.Join(), log)
} else if record.recordType == systemRolloutRecordTypeNormal {
c.recordNormalState(record, c.systemRestore, c.cacheErrors.Join(), log)
}
if !reflect.DeepEqual(existing.Status, c.systemRestore.Status) {
_, err = c.ds.UpdateSystemRestoreStatus(c.systemRestore)
if err != nil {
log.WithError(err).Warnf(SystemRolloutMsgRequeueDueToFmt, "failed to update SystemRestore status")
c.enqueue()
}
}
}
func (c *SystemRolloutController) getLoggerForSystemRollout() *logrus.Entry {
log := c.logger.WithField("systemRestore", c.systemRestore.Name)
if c.backupTargetURL != "" {
log = log.WithField("backupTargetURL", c.backupTargetURL)
}
if c.engineImage != "" {
log = log.WithField("engineImage", c.engineImage)
}
return log
}
func (c *SystemRolloutController) recordErrorState(record *systemRolloutRecord, systemRestore *longhorn.SystemRestore, err string, log logrus.FieldLogger) {
systemRestore.Status.State = longhorn.SystemRestoreStateError
systemRestore.Status.Conditions = types.SetCondition(
systemRestore.Status.Conditions,
longhorn.SystemRestoreConditionTypeError,
longhorn.ConditionStatusTrue,
record.reason,
fmt.Sprintf("%v: %v", record.message, err),
)
log.WithError(fmt.Errorf(err)).Error(record.message)
c.eventRecorder.Event(systemRestore, corev1.EventTypeWarning, constant.EventReasonFailed, util.CapitalizeFirstLetter(record.message))
c.cacheErrors.Reset()
}
func (c *SystemRolloutController) recordNormalState(record *systemRolloutRecord, systemRestore *longhorn.SystemRestore, err string, log logrus.FieldLogger) {
systemRestore.Status.State = record.nextState
log.Info(record.message)
c.eventRecorder.Event(systemRestore, corev1.EventTypeNormal, record.reason, record.message)
}
func (c *SystemRolloutController) updateSystemRolloutRecord(record *systemRolloutRecord, recordType systemRolloutRecordType, nextState longhorn.SystemRestoreState, reason, message string) {
record.recordType = recordType
record.nextState = nextState
record.reason = reason
record.message = message
}
func (c *SystemRolloutController) systemRollout() error {
log := c.getLoggerForSystemRollout()
systemRestore, err := c.ds.GetSystemRestore(c.systemRestoreName)
if err != nil {
return err
}
c.systemRestore = systemRestore
if c.systemRestoredAt == "" {
c.systemRestoredAt = time.Now().UTC().Format(time.RFC3339)
}
if c.systemRestoredURL == "" {
c.systemRestoredURL, err = systembackupstore.GetSystemBackupURL(c.systemRestore.Spec.SystemBackup, c.systemRestoreVersion, c.backupTargetURL)
if err != nil {
return err
}
}
record := &systemRolloutRecord{}
existingSystemRestore := c.systemRestore.DeepCopy()
defer func() {
c.handleStatusUpdate(record, existingSystemRestore, err, log)
}()
switch c.systemRestore.Status.State {
case longhorn.SystemRestoreStatePending:
err = c.initializeSystemRollout(log)
if err != nil {
return errors.Wrap(err, "failed to initialize system rollout")
}
c.updateSystemRolloutRecord(record,
systemRolloutRecordTypeNormal, longhorn.SystemRestoreStateDownloading,
constant.EventReasonStart, fmt.Sprintf(SystemRolloutMsgInitializedFmt, c.systemRestore.Spec.SystemBackup),
)
case longhorn.SystemRestoreStateDownloading:
err = c.Download(log)
if err != nil {
return errors.Wrap(err, "failed to download system backup")
}
c.updateSystemRolloutRecord(record,
systemRolloutRecordTypeNormal, longhorn.SystemRestoreStateUnpacking,
constant.EventReasonFetched, fmt.Sprintf(SystemRolloutMsgDownloadedFmt, c.backupTargetURL),
)
case longhorn.SystemRestoreStateUnpacking:
err = c.Unpack(log)
if err != nil {
c.updateSystemRolloutRecord(record,
systemRolloutRecordTypeError, longhorn.SystemRestoreStateError,
longhorn.SystemRestoreConditionReasonUnpack, longhorn.SystemRestoreConditionMessageUnpackFailed,
)
return nil
}
c.updateSystemRolloutRecord(record,
systemRolloutRecordTypeNormal, longhorn.SystemRestoreStateRestoring,
constant.EventReasonFetched, fmt.Sprintf(SystemRolloutMsgUnpackedFmt, c.downloadPath),
)
case longhorn.SystemRestoreStateRestoring:
c.restore(types.APIExtensionsKindCustomResourceDefinitionList, c.restoreCustomResourceDefinitions, log)
c.restore(types.KubernetesKindDaemonSetList, c.restoreDaemonSets, log)
c.restore(types.LonghornKindEngineImageList, c.restoreEngineImages, log)
c.restore(types.LonghornKindSettingList, c.restoreSettings, log)
wg := &sync.WaitGroup{}
restoreFns := map[string]func() error{
types.KubernetesKindServiceList: c.restoreService,
types.KubernetesKindServiceAccountList: c.restoreServiceAccounts,
types.KubernetesKindClusterRoleList: c.restoreClusterRoles,
types.KubernetesKindClusterRoleBindingList: c.restoreClusterRoleBindings,
types.KubernetesKindPodSecurityPolicyList: c.restorePodSecurityPolicies,
types.KubernetesKindRoleList: c.restoreRoles,
types.KubernetesKindRoleBindingList: c.restoreRoleBindings,
types.KubernetesKindStorageClassList: c.restoreStorageClasses,
types.KubernetesKindConfigMapList: c.restoreConfigMaps,
types.KubernetesKindDeploymentList: c.restoreDeployments,
types.LonghornKindVolumeList: c.restoreVolumes,
types.KubernetesKindPersistentVolumeList: c.restorePersistentVolumes,
types.KubernetesKindPersistentVolumeClaimList: c.restorePersistentVolumeClaims,
types.LonghornKindRecurringJobList: c.restoreRecurringJobs,
}
wg.Add(len(restoreFns))
for k, v := range restoreFns {
kind, fn := k, v
go func() {
c.restore(kind, fn, log)
wg.Done()
}()
}
wg.Wait()
if len(c.cacheErrors) == 0 {
c.updateSystemRolloutRecord(record,
systemRolloutRecordTypeNormal, longhorn.SystemRestoreStateCompleted,
constant.EventReasonRestored, SystemRolloutMsgCompleted,
)
}
}
return nil
}
func (c *SystemRolloutController) initializeSystemRollout(log logrus.FieldLogger) error {
c.systemRestore.Status.OwnerID = c.controllerID
c.systemRestore.Status.State = longhorn.SystemRestoreStateInitializing
systemBackupURL, err := c.GetSystemBackupURL()
if err != nil {
return err
}
c.systemRestore.Status.SourceURL = systemBackupURL
c.systemRestore, err = c.ds.UpdateSystemRestore(c.systemRestore)
if err != nil {
return errors.Wrap(err, "failed to update SystemRestore")
}
return nil
}
func (c *SystemRolloutController) syncController() error {
if c.systemRestore == nil {
systemRestore, err := c.ds.GetSystemRestore(c.systemRestoreName)
if err != nil {
return err
}
c.downloadPath = filepath.Join(types.SystemRolloutDirTemp, systemRestore.Name+types.SystemBackupExtension)
systemBackup, err := c.ds.GetSystemBackupRO(systemRestore.Spec.SystemBackup)
if err != nil {
return errors.Wrapf(err, "failed to get SystemBackup %v", systemRestore.Spec.SystemBackup)
}
currentLonghornVersion, err := c.ds.GetSettingWithAutoFillingRO(types.SettingNameCurrentLonghornVersion)
if err != nil {
return err
}
if systemBackup.Status.Version != currentLonghornVersion.Value {
c.logger.WithFields(logrus.Fields{
"from": currentLonghornVersion.Value,
"to": systemBackup.Status.Version,
}).Warn("Restoring Longhorn to a different version")
}
c.systemRestoreVersion = systemBackup.Status.Version
c.systemRestore = systemRestore
}
backupTarget, err := c.ds.GetDefaultBackupTargetRO()
if err != nil {
return err
}
backupTargetClient, err := newBackupTargetClientFromDefaultEngineImage(c.ds, backupTarget)
if err != nil {
return errors.Wrap(err, "failed to init backup target clients")
}
systemBackupCfg, err := backupTargetClient.GetSystemBackupConfig(c.systemRestore.Spec.SystemBackup, c.systemRestoreVersion)
if err != nil {
return err
}
obj, err := c.createSystemBackupEngineImage(systemBackupCfg.EngineImage)
if err != nil && !apierrors.IsAlreadyExists(err) {
return err
}
engineImage, ok := obj.(*longhorn.EngineImage)
if !ok {
return fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, obj.GetObjectKind(), types.LonghornKindEngineImage)
}
if engineImage.Status.State != longhorn.EngineImageStateDeployed {
return errors.Errorf("engine image %v not %v yet", engineImage.Name, longhorn.EngineImageStateDeployed)
}
rolloutBackupTargetClient, err := newBackupTargetClient(c.ds, backupTarget, systemBackupCfg.EngineImage)
if err != nil {
return errors.Wrap(err, "failed to init rollout backup target clients")
}
c.backupTargetClient = rolloutBackupTargetClient
c.backupTargetCredential = backupTargetClient.Credential
c.backupTargetURL = backupTargetClient.URL
c.engineImage = systemBackupCfg.EngineImage
c.cacheErrors = util.MultiError{}
return nil
}
func (c *SystemRolloutController) createSystemBackupEngineImage(engineImage string) (runtime.Object, error) {
obj, err := c.ds.GetEngineImageByImage(engineImage)
if err != nil {
if !types.ErrorIsNotFound(err) {
return nil, err
}
}
if obj != nil {
return obj, nil
}
engineImageName := types.GetEngineImageChecksumName(engineImage)
log := c.logger.WithField(types.LonghornKindEngineImage, engineImageName)
log.Info("Creating EngineImage for system rollout")
newEngineImage := &longhorn.EngineImage{
ObjectMeta: metav1.ObjectMeta{
Name: engineImageName,
Labels: types.GetEngineImageLabels(engineImageName),
},
Spec: longhorn.EngineImageSpec{
Image: engineImage,
},
}
fnCreate := func(restore runtime.Object) (runtime.Object, error) {
obj, ok := restore.(*longhorn.EngineImage)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, restore.GetObjectKind(), types.LonghornKindEngineImage)
}
return c.ds.CreateEngineImage(obj)
}
return c.rolloutResource(newEngineImage, fnCreate, false, log, SystemRolloutMsgRestoredItem)
}
func (c *SystemRolloutController) cacheKubernetesResources() error {
scheme := kubernetesscheme.Scheme
return c.cacheResourcesFromDirectory(c.getYAMLDirectory(types.SystemBackupSubDirKubernetes), scheme)
}
func (c *SystemRolloutController) cacheAPIExtensionsResources() error {
scheme := runtime.NewScheme()
err := apiextensionsv1.SchemeBuilder.AddToScheme(scheme)
if err != nil {
return err
}
return c.cacheResourcesFromDirectory(c.getYAMLDirectory(types.SystemBackupSubDirAPIExtensions), scheme)
}
func (c *SystemRolloutController) cacheLonghornResources() error {
scheme := runtime.NewScheme()
err := longhorn.SchemeBuilder.AddToScheme(scheme)
if err != nil {
return err
}
return c.cacheResourcesFromDirectory(c.getYAMLDirectory(types.SystemBackupSubDirLonghorn), scheme)
}
func (c *SystemRolloutController) cacheResourcesFromDirectory(name string, scheme *runtime.Scheme) error {
codecs := serializer.NewCodecFactory(scheme)
files, err := os.ReadDir(name)
if err != nil {
if errors.Is(err, unix.ENOENT) {
return nil
}
return errors.Wrapf(err, "failed to read directory %v", name)
}
for _, f := range files {
if f.IsDir() {
continue
}
path := filepath.Join(name, f.Name())
contents, err := os.ReadFile(path)
if err != nil {
logrus.WithError(err).Warnf("Failed to read file %v", path)
continue
}
decode := codecs.UniversalDeserializer().Decode
obj, gvk, err := decode(contents, nil, nil)
if err != nil {
return err
}
switch gvk.Kind {
// API Extensions
case types.APIExtensionsKindCustomResourceDefinitionList:
c.customResourceDefinitionList = obj.(*apiextensionsv1.CustomResourceDefinitionList)
// Kubernetes RBAC
case types.KubernetesKindClusterRoleList:
c.clusterRoleList = obj.(*rbacv1.ClusterRoleList)
case types.KubernetesKindClusterRoleBindingList:
c.clusterRoleBindingList = obj.(*rbacv1.ClusterRoleBindingList)
case types.KubernetesKindRoleList:
c.roleList = obj.(*rbacv1.RoleList)
case types.KubernetesKindRoleBindingList:
c.roleBindingList = obj.(*rbacv1.RoleBindingList)
// Kubernetes Apps
case types.KubernetesKindDaemonSetList:
c.daemonSetList = obj.(*appsv1.DaemonSetList)
case types.KubernetesKindDeploymentList:
c.deploymentList = obj.(*appsv1.DeploymentList)
// Kubernetes Core
case types.KubernetesKindPersistentVolumeList:
c.persistentVolumeList = obj.(*corev1.PersistentVolumeList)
case types.KubernetesKindPersistentVolumeClaimList:
c.persistentVolumeClaimList = obj.(*corev1.PersistentVolumeClaimList)
case types.KubernetesKindServiceAccountList:
c.serviceAccountList = obj.(*corev1.ServiceAccountList)
case types.KubernetesKindServiceList:
c.serviceList = obj.(*corev1.ServiceList)
case types.KubernetesKindConfigMapList:
c.configMapList = obj.(*corev1.ConfigMapList)
// Kubernetes Storage
case types.KubernetesKindStorageClassList:
c.storageClassList = obj.(*storagev1.StorageClassList)
// Kubernetes Policy
case types.KubernetesKindPodSecurityPolicyList:
c.podSecurityPolicyList = obj.(*policyv1beta1.PodSecurityPolicyList)
// Longhorn
case types.LonghornKindEngineImageList:
c.engineImageList = obj.(*longhorn.EngineImageList)
case types.LonghornKindRecurringJobList:
c.recurringJobList = obj.(*longhorn.RecurringJobList)
case types.LonghornKindSettingList:
c.settingList = obj.(*longhorn.SettingList)
case types.LonghornKindVolumeList:
c.volumeList = obj.(*longhorn.VolumeList)
default:
log := c.getLoggerForSystemRollout()
log.Warnf("Unknown resource kind %v", gvk.Kind)
}
}
return nil
}
func (c *SystemRolloutController) getYAMLDirectory(name string) string {
return filepath.Join(filepath.Dir(c.downloadPath), c.systemRestore.Spec.SystemBackup, types.SystemBackupSubDirYaml, name)
}
func (c *SystemRolloutController) Download(log logrus.FieldLogger) error {
err := c.backupTargetClient.DownloadSystemBackup(c.systemRestore.Spec.SystemBackup, c.systemRestoreVersion, c.downloadPath)
if err != nil {
return err
}
_, err = os.Stat(c.downloadPath)
if err != nil {
return err
}
return nil
}
func (c *SystemRolloutController) Unpack(log logrus.FieldLogger) error {
cmd := exec.Command("unzip", c.downloadPath)
cmd.Dir = filepath.Dir(c.downloadPath)
if err := cmd.Run(); err != nil {
return errors.Wrapf(err, "failed to unzip %v", c.downloadPath)
}
if err := c.cacheKubernetesResources(); err != nil {
return errors.Wrap(err, "failed to extract Kubernetes resources")
}
if err := c.cacheAPIExtensionsResources(); err != nil {
return errors.Wrap(err, "failed to extract API Extensions resources")
}
if err := c.cacheLonghornResources(); err != nil {
return errors.Wrap(err, "failed to extract Longhorn resources")
}
return nil
}
func (c *SystemRolloutController) GetSystemBackupURL() (string, error) {
log := c.getLoggerForSystemRollout()
systemBackups, err := c.backupTargetClient.ListSystemBackup()
if err != nil {
return "", errors.Wrap(err, "failed to list rollouts in the backup target")
}
for name, uri := range systemBackups {
systemBackupName := string(name)
systemBackupURI := string(uri)
if systemBackupName != c.systemRestore.Spec.SystemBackup {
continue
}
systemBackupVersion, _, err := parseSystemBackupURI(systemBackupURI)
if err != nil {
return "", err
}
if systemBackupVersion != c.systemRestoreVersion {
log.Warnf("Found %v version in mismatching version %v, expecting %v", name, systemBackupVersion, c.systemRestoreVersion)
continue
}
return c.backupTargetURL + systemBackupURI, nil
}
return "", errors.Errorf("failed to find system backup %v of version %v in %v", c.systemRestore.Spec.SystemBackup, c.systemRestoreVersion, systemBackups)
}
func (c *SystemRolloutController) restore(kind string, fn func() error, log logrus.FieldLogger) {
timer := time.NewTimer(datastore.SystemRestoreTimeout)
defer timer.Stop()
ticker := time.NewTicker(1 * time.Second)
defer ticker.Stop()
var err error
for {
select {
case <-timer.C:
c.postRestoreHandle(kind, err)
return
case <-ticker.C:
err = fn()
if err == nil {
c.postRestoreHandle(kind, nil)
return
}
log.WithError(err).Warnf(SystemRolloutMsgRestoringFmt, kind)
}
}
}
func (c *SystemRolloutController) postRestoreHandle(kind string, restoreError error) {
log := c.getLoggerForSystemRollout()
systemRestore, err := c.ds.GetSystemRestoreInProgress(c.systemRestoreName)
if err != nil {
c.cacheErrors.Append(util.NewMultiError(err.Error()))
return
}
if systemRestore.Status.State == longhorn.SystemRestoreStateError {
return
}
if restoreError != nil {
c.cacheErrors.Append(util.NewMultiError(restoreError.Error()))
return
}
restoredMessage := fmt.Sprintf(SystemRolloutMsgRestoredKindFmt, kind)
log.Info(restoredMessage)
c.eventRecorder.Event(systemRestore, corev1.EventTypeNormal, fmt.Sprintf(constant.EventReasonRestoredFmt, kind), restoredMessage)
}
func (c *SystemRolloutController) rolloutResource(obj runtime.Object, fnRollout func(runtime.Object) (runtime.Object, error), isSkipped bool, log logrus.FieldLogger, message string) (runtime.Object, error) {
err := c.tagLonghornLastSystemRestoreAnnotation(obj, isSkipped, log, message)
if err != nil {
if types.ErrorAlreadyExists(err) {
return obj, nil
}
return nil, err
}
return fnRollout(obj)
}
func (c *SystemRolloutController) restoreClusterRoles() (err error) {
if c.clusterRoleList == nil {
return nil
}
for _, restore := range c.clusterRoleList.Items {
log := c.logger.WithField(types.KubernetesKindClusterRole, restore.Name)
exist, err := c.ds.GetClusterRole(restore.Name)
if err != nil {
if !datastore.ErrorIsNotFound(err) {
return err
}
restore.ResourceVersion = ""
log.Info(SystemRolloutMsgCreating)
fnCreate := func(restore runtime.Object) (runtime.Object, error) {
obj, ok := restore.(*rbacv1.ClusterRole)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, restore.GetObjectKind(), types.KubernetesKindClusterRole)
}
return c.ds.CreateClusterRole(obj)
}
_, err := c.rolloutResource(&restore, fnCreate, false, log, SystemRolloutMsgRestoredItem)
if err != nil && !apierrors.IsAlreadyExists(err) {
return err
}
continue
}
isSkipped := true
if !reflect.DeepEqual(exist.Rules, restore.Rules) {
log.Info(SystemRolloutMsgUpdating)
exist.Rules = restore.Rules
isSkipped = false
}
fnUpdate := func(exist runtime.Object) (runtime.Object, error) {
obj, ok := exist.(*rbacv1.ClusterRole)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, exist.GetObjectKind(), types.KubernetesKindClusterRole)
}
return c.ds.UpdateClusterRole(obj)
}
_, err = c.rolloutResource(exist, fnUpdate, isSkipped, log, SystemRolloutMsgSkipIdentical)
if err != nil {
return err
}
}
return nil
}
func (c *SystemRolloutController) restoreClusterRoleBindings() (err error) {
if c.clusterRoleBindingList == nil {
return nil
}
for _, restore := range c.clusterRoleBindingList.Items {
log := c.logger.WithField(types.KubernetesKindClusterRoleBinding, restore.Name)
exist, err := c.ds.GetClusterRoleBinding(restore.Name)
if err != nil {
if !datastore.ErrorIsNotFound(err) {
return err
}
restore.ResourceVersion = ""
log.Info(SystemRolloutMsgCreating)
fnCreate := func(restore runtime.Object) (runtime.Object, error) {
obj, ok := restore.(*rbacv1.ClusterRoleBinding)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, restore.GetObjectKind(), types.KubernetesKindClusterRoleBinding)
}
return c.ds.CreateClusterRoleBinding(obj)
}
_, err := c.rolloutResource(&restore, fnCreate, false, log, SystemRolloutMsgRestoredItem)
if err != nil && !apierrors.IsAlreadyExists(err) {
return err
}
continue
}
isSkipped := true
if !reflect.DeepEqual(exist.RoleRef, restore.RoleRef) || !reflect.DeepEqual(exist.Subjects, restore.Subjects) {
log.Info(SystemRolloutMsgUpdating)
exist.RoleRef = restore.RoleRef
exist.Subjects = restore.Subjects
isSkipped = false
}
fnUpdate := func(exist runtime.Object) (runtime.Object, error) {
obj, ok := exist.(*rbacv1.ClusterRoleBinding)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, exist.GetObjectKind(), types.KubernetesKindClusterRoleBinding)
}
return c.ds.UpdateClusterRoleBinding(obj)
}
_, err = c.rolloutResource(exist, fnUpdate, isSkipped, log, SystemRolloutMsgSkipIdentical)
if err != nil {
return err
}
}
return nil
}
func (c *SystemRolloutController) restoreConfigMaps() (err error) {
if c.configMapList == nil {
return nil
}
for _, restore := range c.configMapList.Items {
log := c.logger.WithField(types.KubernetesKindConfigMap, restore.Name)
if restore.Name == types.DefaultDefaultSettingConfigMapName {
log.Infof(SystemRolloutMsgIgnoreItemFmt, types.DefaultDefaultSettingConfigMapName)
continue
}
exist, err := c.ds.GetConfigMapRO(restore.Namespace, restore.Name)
if err != nil {
if !datastore.ErrorIsNotFound(err) {
return err
}
restore.ResourceVersion = ""
log.Info(SystemRolloutMsgCreating)
fnCreate := func(restore runtime.Object) (runtime.Object, error) {
obj, ok := restore.(*corev1.ConfigMap)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, restore.GetObjectKind(), types.KubernetesKindConfigMap)
}
return c.ds.CreateConfigMap(obj)
}
_, err := c.rolloutResource(&restore, fnCreate, false, log, SystemRolloutMsgRestoredItem)
if err != nil && !apierrors.IsAlreadyExists(err) {
return err
}
continue
}
isSkipped := true
if !reflect.DeepEqual(exist.Data, restore.Data) {
log.Info(SystemRolloutMsgUpdating)
exist.Data = restore.Data
isSkipped = false
}
fnUpdate := func(exist runtime.Object) (runtime.Object, error) {
obj, ok := exist.(*corev1.ConfigMap)
if !ok {
return nil, fmt.Errorf(SystemRolloutErrFailedConvertToObjectFmt, exist.GetObjectKind(), types.KubernetesKindConfigMap)
}
return c.ds.UpdateConfigMap(obj)
}
_, err = c.rolloutResource(exist, fnUpdate, isSkipped, log, SystemRolloutMsgSkipIdentical)
if err != nil {
return err
}
}
return nil