/
updater.go
719 lines (594 loc) · 22.4 KB
/
updater.go
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/*
Copyright 2022 Flant JSC
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package updater
import (
"errors"
"fmt"
"os"
"sort"
"strconv"
"time"
"github.com/flant/addon-operator/pkg/module_manager/go_hook"
"github.com/flant/addon-operator/pkg/module_manager/go_hook/metrics"
"github.com/flant/addon-operator/sdk"
"github.com/flant/shell-operator/pkg/kube/object_patch"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/utils/pointer"
"github.com/deckhouse/deckhouse/go_lib/dependency/requirements"
"github.com/deckhouse/deckhouse/go_lib/hooks/update"
"github.com/deckhouse/deckhouse/go_lib/set"
"github.com/deckhouse/deckhouse/modules/002-deckhouse/hooks/internal/apis/v1alpha1"
)
const (
metricReleasesGroup = "d8_releases"
waitingManualApprovalMsg = "Waiting for manual approval"
)
type DeckhouseUpdater struct {
now time.Time
inManualMode bool
// probably we have to change to interfaces but later
input *go_hook.HookInput
// don't modify releases order, logic is based on this sorted slice
releases []DeckhouseRelease
totalPendingManualReleases int
predictedReleaseIndex int
skippedPatchesIndexes []int
currentDeployedReleaseIndex int
forcedReleaseIndex int
predictedReleaseIsPatch *bool
deckhousePodIsReady bool
deckhouseIsBootstrapping bool
releaseData DeckhouseReleaseData
notificationConfig *NotificationConfig
}
func NewDeckhouseUpdater(input *go_hook.HookInput, mode string, data DeckhouseReleaseData, podIsReady, isBootstrapping bool) (*DeckhouseUpdater, error) {
nConfig, err := ParseNotificationConfigFromValues(input)
if err != nil {
return nil, fmt.Errorf("parsing notification config: %v", err)
}
now := time.Now().UTC()
if os.Getenv("D8_IS_TESTS_ENVIRONMENT") != "" {
now = time.Date(2021, 01, 01, 13, 30, 00, 00, time.UTC)
}
return &DeckhouseUpdater{
now: now,
inManualMode: mode == "Manual",
input: input,
predictedReleaseIndex: -1,
currentDeployedReleaseIndex: -1,
forcedReleaseIndex: -1,
skippedPatchesIndexes: make([]int, 0),
deckhousePodIsReady: podIsReady,
deckhouseIsBootstrapping: isBootstrapping,
releaseData: data,
notificationConfig: nConfig,
}, nil
}
// for patch we check less conditions, then for minor release
// - Canary settings
func (du *DeckhouseUpdater) checkPatchReleaseConditions(predictedRelease *DeckhouseRelease) bool {
// check: canary settings
if predictedRelease.ApplyAfter != nil && !predictedRelease.AnnotationFlags.ApplyNow {
if du.now.Before(*predictedRelease.ApplyAfter) {
du.input.LogEntry.Infof("Release %s is postponed by canary process. Waiting", predictedRelease.Name)
du.updateStatus(predictedRelease, fmt.Sprintf("Release is postponed until: %s", predictedRelease.ApplyAfter.Format(time.RFC822)), v1alpha1.PhasePending)
return false
}
}
return true
}
func (du *DeckhouseUpdater) checkReleaseNotification(predictedRelease *DeckhouseRelease, updateWindows update.Windows) bool {
if du.releaseData.Notified {
return true
}
var applyTimeChanged bool
predictedReleaseApplyTime := du.predictedReleaseApplyTime(predictedRelease)
if du.notificationConfig.MinimalNotificationTime.Duration > 0 {
minApplyTime := du.now.Add(du.notificationConfig.MinimalNotificationTime.Duration)
if minApplyTime.Before(predictedReleaseApplyTime) {
minApplyTime = predictedReleaseApplyTime
} else {
predictedReleaseApplyTime = minApplyTime
applyTimeChanged = true
}
}
releaseApplyTime := updateWindows.NextAllowedTime(predictedReleaseApplyTime)
version := fmt.Sprintf("%d.%d", predictedRelease.Version.Major(), predictedRelease.Version.Minor())
msg := fmt.Sprintf("New Deckhouse Release %s is available. Release will be applied at: %s", version, releaseApplyTime.Format(time.RFC850))
if du.notificationConfig.WebhookURL != "" {
data := webhookData{
Version: fmt.Sprintf("%d.%d", predictedRelease.Version.Major(), predictedRelease.Version.Minor()),
Requirements: predictedRelease.Requirements,
ChangelogLink: predictedRelease.ChangelogLink,
ApplyTime: releaseApplyTime.Format(time.RFC3339),
Message: msg,
}
err := sendWebhookNotification(du.notificationConfig, data)
if err != nil {
du.input.LogEntry.Errorf("Send deckhouse release notification failed: %s", err)
return false
}
}
du.changeNotifiedFlag(true)
if applyTimeChanged && !predictedRelease.AnnotationFlags.ApplyNow {
patch := map[string]interface{}{
"spec": map[string]interface{}{
"applyAfter": releaseApplyTime,
},
"metadata": map[string]interface{}{
"annotations": map[string]string{
"release.deckhouse.io/notification-time-shift": "true",
},
},
}
du.input.PatchCollector.MergePatch(patch, "deckhouse.io/v1alpha1", "DeckhouseRelease", "", predictedRelease.Name)
return false
}
return true
}
// for minor release (version change) we check more conditions
// - Release requirements
// - Disruptions
// - Notification
// - Cooldown
// - Canary settings
// - Update windows or manual approval
// - Deckhouse pod is ready
func (du *DeckhouseUpdater) checkMinorReleaseConditions(predictedRelease *DeckhouseRelease, updateWindows update.Windows) bool {
// check: release requirements (hard lock)
passed := du.checkReleaseRequirements(predictedRelease)
if !passed {
du.input.MetricsCollector.Set("d8_release_blocked", 1, map[string]string{"name": predictedRelease.Name, "reason": "requirement"}, metrics.WithGroup(metricReleasesGroup))
du.input.LogEntry.Warnf("Release %s requirements are not met", predictedRelease.Name)
return false
}
// check: release disruptions (hard lock)
passed = du.checkReleaseDisruptions(predictedRelease)
if !passed {
du.input.MetricsCollector.Set("d8_release_blocked", 1, map[string]string{"name": predictedRelease.Name, "reason": "disruption"}, metrics.WithGroup(metricReleasesGroup))
du.input.LogEntry.Warnf("Release %s disruption approval required", predictedRelease.Name)
return false
}
// check: Notification
if du.notificationConfig != nil {
passed = du.checkReleaseNotification(predictedRelease, updateWindows)
if !passed {
return false
}
}
// call tine checks, only if release does not have the `release.deckhouse.io/apply-now="true"` annotation
if !predictedRelease.AnnotationFlags.ApplyNow {
// check: release cooldown
if predictedRelease.CooldownUntil != nil {
if du.now.Before(*predictedRelease.CooldownUntil) {
du.input.LogEntry.Infof("Release %s in cooldown", predictedRelease.Name)
du.updateStatus(predictedRelease, fmt.Sprintf("Release is in cooldown until: %s", predictedRelease.CooldownUntil.Format(time.RFC822)), v1alpha1.PhasePending)
return false
}
}
// check: canary settings
if predictedRelease.ApplyAfter != nil && !du.inManualMode {
if du.now.Before(*predictedRelease.ApplyAfter) {
du.input.LogEntry.Infof("Release %s is postponed by canary process. Waiting", predictedRelease.Name)
du.updateStatus(predictedRelease, fmt.Sprintf("Release is postponed until: %s", predictedRelease.ApplyAfter.Format(time.RFC822)), v1alpha1.PhasePending)
return false
}
}
if du.inManualMode {
// check: release is approved in Manual mode
if !predictedRelease.Status.Approved {
du.input.LogEntry.Infof("Release %s is waiting for manual approval", predictedRelease.Name)
du.input.MetricsCollector.Set("d8_release_waiting_manual", float64(du.totalPendingManualReleases), map[string]string{"name": predictedRelease.Name}, metrics.WithGroup(metricReleasesGroup))
du.updateStatus(predictedRelease, waitingManualApprovalMsg, v1alpha1.PhasePending)
return false
}
} else {
// check: update windows in Auto mode
if len(updateWindows) > 0 {
updatePermitted := updateWindows.IsAllowed(du.now)
if !updatePermitted {
applyTime := updateWindows.NextAllowedTime(du.now)
du.input.LogEntry.Info("Deckhouse update does not get into update windows. Skipping")
du.updateStatus(predictedRelease, fmt.Sprintf("Release is waiting for the update window: %s", applyTime.Format(time.RFC822)), v1alpha1.PhasePending)
return false
}
}
}
} // end of `release.deckhouse.io/apply-now="true"` block
// check: Deckhouse pod is ready
if !du.deckhousePodIsReady {
du.input.LogEntry.Info("Deckhouse is not ready. Skipping upgrade")
du.updateStatus(predictedRelease, "Waiting for Deckhouse pod to be ready", v1alpha1.PhasePending)
return false
}
return true
}
// ApplyPredictedRelease applies predicted release, checks everything:
// - Deckhouse is ready (except patch)
// - Canary settings
// - Manual approving
// - Release requirements
func (du *DeckhouseUpdater) ApplyPredictedRelease(updateWindows update.Windows) {
if du.predictedReleaseIndex == -1 {
return // has no predicted release
}
var currentRelease *DeckhouseRelease
predictedRelease := &(du.releases[du.predictedReleaseIndex])
if du.currentDeployedReleaseIndex != -1 {
currentRelease = &(du.releases[du.currentDeployedReleaseIndex])
}
// if deckhouse pod has bootstrap image -> apply first release
// doesn't matter which is update mode
if du.deckhouseIsBootstrapping && len(du.releases) == 1 {
du.runReleaseDeploy(predictedRelease, currentRelease)
return
}
var readyForDeploy bool
if du.PredictedReleaseIsPatch() {
readyForDeploy = du.checkPatchReleaseConditions(predictedRelease)
} else {
readyForDeploy = du.checkMinorReleaseConditions(predictedRelease, updateWindows)
}
if !readyForDeploy {
return
}
// all checks are passed, deploy release
du.runReleaseDeploy(predictedRelease, currentRelease)
}
func (du *DeckhouseUpdater) predictedRelease() *DeckhouseRelease {
if du.predictedReleaseIndex == -1 {
return nil // has no predicted release
}
predictedRelease := &(du.releases[du.predictedReleaseIndex])
return predictedRelease
}
func (du *DeckhouseUpdater) deployedRelease() *DeckhouseRelease {
if du.currentDeployedReleaseIndex == -1 {
return nil // has no deployed
}
deployedRelease := &(du.releases[du.currentDeployedReleaseIndex])
return deployedRelease
}
func (du *DeckhouseUpdater) predictedReleaseApplyTime(predictedRelease *DeckhouseRelease) time.Time {
if predictedRelease.ApplyAfter != nil {
return *predictedRelease.ApplyAfter
}
return du.now
}
func (du *DeckhouseUpdater) checkReleaseDisruptions(rl *DeckhouseRelease) bool {
dMode, ok := du.input.Values.GetOk("deckhouse.update.disruptionApprovalMode")
if !ok || dMode.String() == "Auto" {
return true
}
for _, key := range rl.Disruptions {
hasDisruptionUpdate, reason := requirements.HasDisruption(key)
if hasDisruptionUpdate {
if !rl.AnnotationFlags.DisruptionApproved {
msg := fmt.Sprintf("Release requires disruption approval (`kubectl annotate DeckhouseRelease %s release.deckhouse.io/disruption-approved=true`): %s", rl.Name, reason)
du.updateStatus(rl, msg, v1alpha1.PhasePending)
return false
}
}
}
return true
}
func (du *DeckhouseUpdater) ReleasesCount() int {
return len(du.releases)
}
func (du *DeckhouseUpdater) InManualMode() bool {
return du.inManualMode
}
func (du *DeckhouseUpdater) runReleaseDeploy(predictedRelease, currentRelease *DeckhouseRelease) {
du.input.LogEntry.Infof("Applying release %s", predictedRelease.Name)
repo := du.input.Values.Get("global.modulesImages.registry.base").String()
du.ChangeUpdatingFlag(true)
du.changeNotifiedFlag(false)
// patch deckhouse deployment is faster than set internal values and then upgrade by helm
// we can set "deckhouse.internal.currentReleaseImageName" value but lets left it this way
du.input.PatchCollector.Filter(func(u *unstructured.Unstructured) (*unstructured.Unstructured, error) {
var depl appsv1.Deployment
err := sdk.FromUnstructured(u, &depl)
if err != nil {
return nil, err
}
depl.Spec.Template.Spec.Containers[0].Image = repo + ":" + predictedRelease.Version.Original()
return sdk.ToUnstructured(&depl)
}, "apps/v1", "Deployment", "d8-system", "deckhouse")
du.updateStatus(predictedRelease, "", v1alpha1.PhaseDeployed)
// remove annotation if exists
if predictedRelease.AnnotationFlags.ApplyNow {
annotationsPatch := map[string]interface{}{
"metadata": map[string]interface{}{
"annotations": map[string]interface{}{
"release.deckhouse.io/apply-now": nil,
},
},
}
// remove annotation
du.input.PatchCollector.MergePatch(annotationsPatch, "deckhouse.io/v1alpha1", "DeckhouseRelease", "", predictedRelease.Name)
}
if currentRelease != nil {
// skip last deployed release
du.updateStatus(currentRelease, "", v1alpha1.PhaseSuperseded)
}
if len(du.skippedPatchesIndexes) > 0 {
for _, index := range du.skippedPatchesIndexes {
release := du.releases[index]
// skip not-deployed patches
du.updateStatus(&release, "", v1alpha1.PhaseSkipped)
}
}
}
// PredictNextRelease runs prediction of the next release to deploy.
// it skips patch releases and save only the latest one
func (du *DeckhouseUpdater) PredictNextRelease() {
for i, release := range du.releases {
switch release.Status.Phase {
case v1alpha1.PhaseSuperseded, v1alpha1.PhaseSuspended, v1alpha1.PhaseOutdated:
// pass
case v1alpha1.PhasePending:
du.processPendingRelease(i, release)
case v1alpha1.PhaseDeployed:
du.currentDeployedReleaseIndex = i
}
if release.AnnotationFlags.Force {
du.forcedReleaseIndex = i
}
}
}
// LastReleaseDeployed returns the equality of the latest existed release with the latest deployed
func (du *DeckhouseUpdater) LastReleaseDeployed() bool {
return du.currentDeployedReleaseIndex == len(du.releases)-1
}
// HasForceRelease check the existence of the forced release
func (du *DeckhouseUpdater) HasForceRelease() bool {
return du.forcedReleaseIndex != -1
}
// ApplyForcedRelease deploys forced release without any checks (windows, requirements, approvals and so on)
func (du *DeckhouseUpdater) ApplyForcedRelease() {
if du.forcedReleaseIndex == -1 {
return
}
forcedRelease := &(du.releases[du.forcedReleaseIndex])
var currentRelease *DeckhouseRelease
if du.currentDeployedReleaseIndex != -1 {
currentRelease = &(du.releases[du.currentDeployedReleaseIndex])
}
du.input.LogEntry.Warnf("Forcing release %s", forcedRelease.Name)
du.runReleaseDeploy(forcedRelease, currentRelease)
annotationsPatch := map[string]interface{}{
"metadata": map[string]interface{}{
"annotations": map[string]interface{}{
"release.deckhouse.io/force": nil,
},
},
}
// remove annotation
du.input.PatchCollector.MergePatch(annotationsPatch, "deckhouse.io/v1alpha1", "DeckhouseRelease", "", forcedRelease.Name)
// Outdate all previous releases
for i, release := range du.releases {
if i < du.forcedReleaseIndex {
du.updateStatus(&release, "", v1alpha1.PhaseSuperseded)
}
}
}
// PredictedReleaseIsPatch shows if the predicted release is a patch with respect to the Deployed one
func (du *DeckhouseUpdater) PredictedReleaseIsPatch() bool {
if du.predictedReleaseIsPatch != nil {
return *du.predictedReleaseIsPatch
}
if du.currentDeployedReleaseIndex == -1 {
du.predictedReleaseIsPatch = pointer.Bool(false)
return false
}
if du.predictedReleaseIndex == -1 {
du.predictedReleaseIsPatch = pointer.Bool(false)
return false
}
current := du.releases[du.currentDeployedReleaseIndex]
predicted := du.releases[du.predictedReleaseIndex]
if current.Version.Major() != predicted.Version.Major() {
du.predictedReleaseIsPatch = pointer.Bool(false)
return false
}
if current.Version.Minor() != predicted.Version.Minor() {
du.predictedReleaseIsPatch = pointer.Bool(false)
return false
}
du.predictedReleaseIsPatch = pointer.Bool(true)
return true
}
func (du *DeckhouseUpdater) processPendingRelease(index int, release DeckhouseRelease) {
// check: already has predicted release and current is a patch
if du.predictedReleaseIndex >= 0 {
previousPredictedRelease := du.releases[du.predictedReleaseIndex]
if previousPredictedRelease.Version.Major() != release.Version.Major() {
return
}
if previousPredictedRelease.Version.Minor() != release.Version.Minor() {
return
}
// it's a patch for predicted release, continue
du.skippedPatchesIndexes = append(du.skippedPatchesIndexes, du.predictedReleaseIndex)
}
// release is predicted to be Deployed
du.predictedReleaseIndex = index
}
func (du *DeckhouseUpdater) patchInitialStatus(release DeckhouseRelease) DeckhouseRelease {
if release.Status.Phase != "" {
return release
}
release.Status.Approved = true
du.updateStatus(&release, "", v1alpha1.PhasePending)
return release
}
func (du *DeckhouseUpdater) migrateOutdatedStatus(release DeckhouseRelease) DeckhouseRelease {
if release.Status.Phase != v1alpha1.PhaseOutdated {
return release
}
du.updateStatus(&release, "", v1alpha1.PhaseSuperseded)
return release
}
func (du *DeckhouseUpdater) patchSuspendedStatus(release DeckhouseRelease) DeckhouseRelease {
if !release.AnnotationFlags.Suspend {
return release
}
annotationsPatch := map[string]interface{}{
"metadata": map[string]interface{}{
"annotations": map[string]interface{}{
"release.deckhouse.io/suspended": nil,
},
},
}
du.input.PatchCollector.MergePatch(annotationsPatch, "deckhouse.io/v1alpha1", "DeckhouseRelease", "", release.Name)
du.updateStatus(&release, "", v1alpha1.PhaseSuspended)
return release
}
// patch manual Pending release if update mode was changed
func (du *DeckhouseUpdater) patchManualRelease(release DeckhouseRelease) DeckhouseRelease {
if release.Status.Phase != v1alpha1.PhasePending {
return release
}
if !du.inManualMode {
return release
}
if !release.ManuallyApproved {
release.Status.Approved = false
du.totalPendingManualReleases++
} else {
release.Status.Approved = true
}
return release
}
// FetchAndPrepareReleases fetches releases from snapshot and then:
// - patch releases with empty status (just created)
// - handle suspended releases (patch status and remove annotation)
// - patch manual releases (change status)
func (du *DeckhouseUpdater) FetchAndPrepareReleases(snap []go_hook.FilterResult) {
if len(snap) == 0 {
return
}
releases := make([]DeckhouseRelease, 0, len(snap))
for _, rl := range snap {
release := rl.(DeckhouseRelease)
release = du.patchInitialStatus(release)
// TODO: remove migration after release 1.46
release = du.migrateOutdatedStatus(release)
release = du.patchSuspendedStatus(release)
release = du.patchManualRelease(release)
releases = append(releases, release)
}
sort.Sort(ByVersion(releases))
du.releases = releases
}
func (du *DeckhouseUpdater) checkReleaseRequirements(rl *DeckhouseRelease) bool {
modulesSet := set.New()
modules := du.input.Values.Get("global.enabledModules").Array()
for _, module := range modules {
moduleName := module.String()
modulesSet.Add(moduleName)
}
for key, value := range rl.Requirements {
passed, err := requirements.CheckRequirement(key, value, modulesSet)
if !passed {
msg := fmt.Sprintf("%q requirement for DeckhouseRelease %q not met: %s", key, rl.Version, err)
if errors.Is(err, requirements.ErrNotRegistered) {
du.input.LogEntry.Error(err)
msg = fmt.Sprintf("%q requirement is not registered", key)
}
du.updateStatus(rl, msg, v1alpha1.PhasePending)
return false
}
}
return true
}
func (du *DeckhouseUpdater) updateStatus(release *DeckhouseRelease, msg, phase string) {
if phase == release.Status.Phase && msg == release.Status.Message {
return
}
st := StatusPatch{
Phase: phase,
Message: msg,
Approved: release.Status.Approved,
TransitionTime: time.Now().UTC(),
}
du.input.PatchCollector.MergePatch(st, "deckhouse.io/v1alpha1", "DeckhouseRelease", "", release.Name, object_patch.WithSubresource("/status"))
release.Status.Phase = phase
release.Status.Message = msg
}
func (du *DeckhouseUpdater) ChangeUpdatingFlag(fl bool) {
if du.releaseData.IsUpdating == fl {
return
}
du.releaseData.IsUpdating = fl
du.createReleaseDataCM()
}
func (du *DeckhouseUpdater) changeNotifiedFlag(fl bool) {
if du.releaseData.Notified == fl {
return
}
du.releaseData.Notified = fl
du.createReleaseDataCM()
}
func (du *DeckhouseUpdater) createReleaseDataCM() {
cm := &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ConfigMap",
},
ObjectMeta: metav1.ObjectMeta{
Name: "d8-release-data",
Namespace: "d8-system",
Labels: map[string]string{
"heritage": "deckhouse",
},
},
Data: map[string]string{
// current release is updating
"isUpdating": strconv.FormatBool(du.releaseData.IsUpdating),
// notification about next release is sent, flag will be reset when new release is deployed
"notified": strconv.FormatBool(du.releaseData.Notified),
},
}
du.input.PatchCollector.Create(cm, object_patch.UpdateIfExists())
}
// for applied now we check less conditions, then for minor release
// - Release requirements
// - Disruptions
// - Deckhouse pod is ready
func (du *DeckhouseUpdater) checkAppliedNowConditions(appliedNowRelease *DeckhouseRelease) bool {
// check: release requirements (hard lock)
passed := du.checkReleaseRequirements(appliedNowRelease)
if !passed {
du.input.MetricsCollector.Set("d8_release_blocked", 1, map[string]string{"name": appliedNowRelease.Name, "reason": "requirement"}, metrics.WithGroup(metricReleasesGroup))
du.input.LogEntry.Warnf("Release %s requirements are not met", appliedNowRelease.Name)
return false
}
// check: release disruptions (hard lock)
passed = du.checkReleaseDisruptions(appliedNowRelease)
if !passed {
du.input.MetricsCollector.Set("d8_release_blocked", 1, map[string]string{"name": appliedNowRelease.Name, "reason": "disruption"}, metrics.WithGroup(metricReleasesGroup))
du.input.LogEntry.Warnf("Release %s disruption approval required", appliedNowRelease.Name)
return false
}
// check: Deckhouse pod is ready
if !du.deckhousePodIsReady {
du.input.LogEntry.Info("Deckhouse is not ready. Skipping upgrade")
du.updateStatus(appliedNowRelease, "Waiting for Deckhouse pod to be ready", v1alpha1.PhasePending)
return false
}
return true
}