/
graph.go
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/
graph.go
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package addonconfiguration
import (
"fmt"
"sort"
"time"
"k8s.io/apimachinery/pkg/api/equality"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
addonv1alpha1 "open-cluster-management.io/api/addon/v1alpha1"
clusterlisterv1beta1 "open-cluster-management.io/api/client/cluster/listers/cluster/v1beta1"
clusterv1alpha1 "open-cluster-management.io/api/cluster/v1alpha1"
clustersdkv1alpha1 "open-cluster-management.io/sdk-go/pkg/apis/cluster/v1alpha1"
clustersdkv1beta1 "open-cluster-management.io/sdk-go/pkg/apis/cluster/v1beta1"
"open-cluster-management.io/ocm/pkg/common/helpers"
)
// configurationTree is a 2 level snapshot tree on the configuration of addons
// the first level is a list of nodes that represents a install strategy and a desired configuration for this install
// strategy. The second level is a list of nodes that represent each mca and its desired configuration
type configurationGraph struct {
// nodes maintains a list between a installStrategy and its related mcas
nodes []*installStrategyNode
// defaults is the nodes with no install strategy
defaults *installStrategyNode
}
// installStrategyNode is a node in configurationGraph defined by a install strategy
type installStrategyNode struct {
placementRef addonv1alpha1.PlacementRef
pdTracker *clustersdkv1beta1.PlacementDecisionClustersTracker
rolloutStrategy clusterv1alpha1.RolloutStrategy
rolloutResult clustersdkv1alpha1.RolloutResult
desiredConfigs addonConfigMap
// children keeps a map of addons node as the children of this node
children map[string]*addonNode
clusters sets.Set[string]
}
// addonNode is node as a child of installStrategy node represting a mca
// addonnode
type addonNode struct {
desiredConfigs addonConfigMap
mca *addonv1alpha1.ManagedClusterAddOn
status *clustersdkv1alpha1.ClusterRolloutStatus
}
type addonConfigMap map[addonv1alpha1.ConfigGroupResource]addonv1alpha1.ConfigReference
// set addon rollout status
func (n *addonNode) setRolloutStatus() {
n.status = &clustersdkv1alpha1.ClusterRolloutStatus{ClusterName: n.mca.Namespace}
// desired configs doesn't match actual configs, set to ToApply
if len(n.mca.Status.ConfigReferences) != len(n.desiredConfigs) {
n.status.Status = clustersdkv1alpha1.ToApply
return
}
var progressingCond metav1.Condition
for _, cond := range n.mca.Status.Conditions {
if cond.Type == addonv1alpha1.ManagedClusterAddOnConditionProgressing {
progressingCond = cond
break
}
}
for _, actual := range n.mca.Status.ConfigReferences {
if desired, ok := n.desiredConfigs[actual.ConfigGroupResource]; ok {
// desired config spec hash doesn't match actual, set to ToApply
if !equality.Semantic.DeepEqual(desired.DesiredConfig, actual.DesiredConfig) {
n.status.Status = clustersdkv1alpha1.ToApply
return
// desired config spec hash matches actual, but last applied config spec hash doesn't match actual
} else if !equality.Semantic.DeepEqual(actual.LastAppliedConfig, actual.DesiredConfig) {
switch progressingCond.Reason {
case addonv1alpha1.ProgressingReasonInstallFailed, addonv1alpha1.ProgressingReasonUpgradeFailed:
n.status.Status = clustersdkv1alpha1.Failed
n.status.LastTransitionTime = &progressingCond.LastTransitionTime
case addonv1alpha1.ProgressingReasonInstalling, addonv1alpha1.ProgressingReasonUpgrading:
n.status.Status = clustersdkv1alpha1.Progressing
n.status.LastTransitionTime = &progressingCond.LastTransitionTime
default:
n.status.Status = clustersdkv1alpha1.Progressing
}
return
}
} else {
n.status.Status = clustersdkv1alpha1.ToApply
return
}
}
// succeed
n.status.Status = clustersdkv1alpha1.Succeeded
if progressingCond.Reason == addonv1alpha1.ProgressingReasonInstallSucceed || progressingCond.Reason == addonv1alpha1.ProgressingReasonUpgradeSucceed {
n.status.LastTransitionTime = &progressingCond.LastTransitionTime
}
}
func (d addonConfigMap) copy() addonConfigMap {
output := addonConfigMap{}
for k, v := range d {
output[k] = v
}
return output
}
func newGraph(supportedConfigs []addonv1alpha1.ConfigMeta, defaultConfigReferences []addonv1alpha1.DefaultConfigReference) *configurationGraph {
graph := &configurationGraph{
nodes: []*installStrategyNode{},
defaults: &installStrategyNode{
desiredConfigs: map[addonv1alpha1.ConfigGroupResource]addonv1alpha1.ConfigReference{},
children: map[string]*addonNode{},
},
}
// init graph.defaults.desiredConfigs with supportedConfigs
for _, config := range supportedConfigs {
if config.DefaultConfig != nil {
graph.defaults.desiredConfigs[config.ConfigGroupResource] = addonv1alpha1.ConfigReference{
ConfigGroupResource: config.ConfigGroupResource,
ConfigReferent: *config.DefaultConfig,
DesiredConfig: &addonv1alpha1.ConfigSpecHash{
ConfigReferent: *config.DefaultConfig,
},
}
}
}
// copy the spechash from cma status defaultConfigReferences
for _, configRef := range defaultConfigReferences {
if configRef.DesiredConfig == nil {
continue
}
defaultsDesiredConfig, ok := graph.defaults.desiredConfigs[configRef.ConfigGroupResource]
if ok && (defaultsDesiredConfig.DesiredConfig.ConfigReferent == configRef.DesiredConfig.ConfigReferent) {
defaultsDesiredConfig.DesiredConfig.SpecHash = configRef.DesiredConfig.SpecHash
}
}
return graph
}
// addAddonNode to the graph, starting from placement with the highest order
func (g *configurationGraph) addAddonNode(mca *addonv1alpha1.ManagedClusterAddOn) {
for i := len(g.nodes) - 1; i >= 0; i-- {
if g.nodes[i].clusters.Has(mca.Namespace) {
g.nodes[i].addNode(mca)
return
}
}
g.defaults.addNode(mca)
}
// addNode delete clusters on existing graph so the new configuration overrides the previous
func (g *configurationGraph) addPlacementNode(
installStrategy addonv1alpha1.PlacementStrategy,
installProgression addonv1alpha1.InstallProgression,
placementLister clusterlisterv1beta1.PlacementLister,
placementDecisionGetter helpers.PlacementDecisionGetter,
) error {
placementRef := installProgression.PlacementRef
installConfigReference := installProgression.ConfigReferences
// get placement
if placementLister == nil {
return fmt.Errorf("invalid placement lister %v", placementLister)
}
placement, err := placementLister.Placements(placementRef.Namespace).Get(placementRef.Name)
if err != nil {
return err
}
// new decision tracker
pdTracker := clustersdkv1beta1.NewPlacementDecisionClustersTracker(placement, placementDecisionGetter, nil)
// refresh and get existing decision clusters
err = pdTracker.Refresh()
if err != nil {
return err
}
clusters := pdTracker.ExistingClusterGroupsBesides().GetClusters()
node := &installStrategyNode{
placementRef: placementRef,
pdTracker: pdTracker,
rolloutStrategy: installStrategy.RolloutStrategy,
desiredConfigs: g.defaults.desiredConfigs,
children: map[string]*addonNode{},
clusters: clusters,
}
// Set MaxConcurrency
// If progressive strategy is not initialized or MaxConcurrency is not specified, set MaxConcurrency to the default value
if node.rolloutStrategy.Type == clusterv1alpha1.Progressive {
progressiveStrategy := node.rolloutStrategy.Progressive
if progressiveStrategy == nil {
progressiveStrategy = &clusterv1alpha1.RolloutProgressive{}
}
if progressiveStrategy.MaxConcurrency.StrVal == "" && progressiveStrategy.MaxConcurrency.IntVal == 0 {
progressiveStrategy.MaxConcurrency = placement.Spec.DecisionStrategy.GroupStrategy.ClustersPerDecisionGroup
}
node.rolloutStrategy.Progressive = progressiveStrategy
}
// overrides configuration by install strategy
if len(installConfigReference) > 0 {
node.desiredConfigs = node.desiredConfigs.copy()
for _, configRef := range installConfigReference {
if configRef.DesiredConfig == nil {
continue
}
node.desiredConfigs[configRef.ConfigGroupResource] = addonv1alpha1.ConfigReference{
ConfigGroupResource: configRef.ConfigGroupResource,
ConfigReferent: configRef.DesiredConfig.ConfigReferent,
DesiredConfig: configRef.DesiredConfig.DeepCopy(),
}
}
}
// remove addon in defaults and other placements.
for _, cluster := range node.clusters.UnsortedList() {
if _, ok := g.defaults.children[cluster]; ok {
node.addNode(g.defaults.children[cluster].mca)
delete(g.defaults.children, cluster)
}
for _, placementNode := range g.nodes {
if _, ok := placementNode.children[cluster]; ok {
node.addNode(placementNode.children[cluster].mca)
delete(placementNode.children, cluster)
}
}
}
g.nodes = append(g.nodes, node)
return nil
}
func (g *configurationGraph) generateRolloutResult() error {
for _, node := range g.nodes {
if err := node.generateRolloutResult(); err != nil {
return err
}
}
if err := g.defaults.generateRolloutResult(); err != nil {
return err
}
return nil
}
func (g *configurationGraph) getPlacementNodes() map[addonv1alpha1.PlacementRef]*installStrategyNode {
placementNodeMap := map[addonv1alpha1.PlacementRef]*installStrategyNode{}
for _, node := range g.nodes {
placementNodeMap[node.placementRef] = node
}
return placementNodeMap
}
func (g *configurationGraph) getAddonsToUpdate() []*addonNode {
var addons []*addonNode
for _, node := range g.nodes {
addons = append(addons, node.getAddonsToUpdate()...)
}
addons = append(addons, g.defaults.getAddonsToUpdate()...)
return addons
}
func (g *configurationGraph) getRequeueTime() time.Duration {
minRequeue := maxRequeueTime
for _, node := range g.nodes {
nodeRecheckAfter := node.rolloutResult.RecheckAfter
if nodeRecheckAfter != nil && *nodeRecheckAfter < minRequeue {
minRequeue = *nodeRecheckAfter
}
}
return minRequeue
}
func (n *installStrategyNode) addNode(addon *addonv1alpha1.ManagedClusterAddOn) {
n.children[addon.Namespace] = &addonNode{
mca: addon,
desiredConfigs: n.desiredConfigs,
}
// override configuration by mca spec
if len(addon.Spec.Configs) > 0 {
n.children[addon.Namespace].desiredConfigs = n.children[addon.Namespace].desiredConfigs.copy()
// TODO we should also filter out the configs which are not supported configs.
for _, config := range addon.Spec.Configs {
n.children[addon.Namespace].desiredConfigs[config.ConfigGroupResource] = addonv1alpha1.ConfigReference{
ConfigGroupResource: config.ConfigGroupResource,
ConfigReferent: config.ConfigReferent,
DesiredConfig: &addonv1alpha1.ConfigSpecHash{
ConfigReferent: config.ConfigReferent,
},
}
// copy the spechash from mca status
for _, configRef := range addon.Status.ConfigReferences {
if configRef.DesiredConfig == nil {
continue
}
nodeDesiredConfig, ok := n.children[addon.Namespace].desiredConfigs[configRef.ConfigGroupResource]
if ok && (nodeDesiredConfig.DesiredConfig.ConfigReferent == configRef.DesiredConfig.ConfigReferent) {
nodeDesiredConfig.DesiredConfig.SpecHash = configRef.DesiredConfig.SpecHash
}
}
}
}
// set addon node rollout status
n.children[addon.Namespace].setRolloutStatus()
}
func (n *installStrategyNode) generateRolloutResult() error {
if n.placementRef.Name == "" {
// default addons
rolloutResult := clustersdkv1alpha1.RolloutResult{}
rolloutResult.ClustersToRollout = []clustersdkv1alpha1.ClusterRolloutStatus{}
for name, addon := range n.children {
if addon.status == nil {
return fmt.Errorf("failed to get rollout status on cluster %v", name)
}
if addon.status.Status != clustersdkv1alpha1.Succeeded {
rolloutResult.ClustersToRollout = append(rolloutResult.ClustersToRollout, *addon.status)
}
}
n.rolloutResult = rolloutResult
} else {
// placement addons
rolloutHandler, err := clustersdkv1alpha1.NewRolloutHandler(n.pdTracker, getClusterRolloutStatus)
if err != nil {
return err
}
// get existing addons
existingRolloutClusters := []clustersdkv1alpha1.ClusterRolloutStatus{}
for name, addon := range n.children {
clsRolloutStatus, err := getClusterRolloutStatus(name, addon)
if err != nil {
return err
}
existingRolloutClusters = append(existingRolloutClusters, clsRolloutStatus)
}
// sort by cluster name
sort.SliceStable(existingRolloutClusters, func(i, j int) bool {
return existingRolloutClusters[i].ClusterName < existingRolloutClusters[j].ClusterName
})
_, rolloutResult, err := rolloutHandler.GetRolloutCluster(n.rolloutStrategy, existingRolloutClusters)
if err != nil {
return err
}
n.rolloutResult = rolloutResult
}
return nil
}
// addonToUpdate finds the addons to be updated by placement
func (n *installStrategyNode) getAddonsToUpdate() []*addonNode {
var addons []*addonNode
var clusters []string
// get addon to update from rollout result
for _, c := range n.rolloutResult.ClustersToRollout {
if _, exist := n.children[c.ClusterName]; exist {
clusters = append(clusters, c.ClusterName)
}
}
// sort addons by name
sort.Strings(clusters)
for _, k := range clusters {
addons = append(addons, n.children[k])
}
return addons
}
// Return the number of succeed addons.
// Including the addons with status Succeed after MinSuccessTime.
func (n *installStrategyNode) countAddonUpgradeSucceed() int {
count := 0
for _, addon := range n.children {
if desiredConfigsEqual(addon.desiredConfigs, n.desiredConfigs) &&
addon.status.Status == clustersdkv1alpha1.Succeeded &&
!rolloutStatusHasCluster(n.rolloutResult.ClustersToRollout, addon.mca.Namespace) {
count += 1
}
}
return count
}
// Return the number of failed addons after ProgressDeadline.
func (n *installStrategyNode) countAddonUpgradeFailed() int {
count := 0
for _, addon := range n.children {
if desiredConfigsEqual(addon.desiredConfigs, n.desiredConfigs) &&
addon.status.Status == clustersdkv1alpha1.Failed &&
!rolloutStatusHasCluster(n.rolloutResult.ClustersToRollout, addon.mca.Namespace) {
count += 1
}
}
return count
}
// Return the number of exiting addons in rolloutResult.ClustersToRollout.
// Including the addons with status ToApply, Progressing within ProgressDeadline, Failed within ProgressDeadline and Succeed within MinSuccessTime.
func (n *installStrategyNode) countAddonUpgrading() int {
count := 0
for _, addon := range n.children {
if rolloutStatusHasCluster(n.rolloutResult.ClustersToRollout, addon.mca.Namespace) {
count += 1
}
}
return count
}
// Return the number of addons in rolloutResult.ClustersTimeOut.
// Including the addons with status Progressing after ProgressDeadline, Failed after ProgressDeadline.
func (n *installStrategyNode) countAddonTimeOut() int {
return len(n.rolloutResult.ClustersTimeOut)
}
func getClusterRolloutStatus(clusterName string, addonNode *addonNode) (clustersdkv1alpha1.ClusterRolloutStatus, error) {
if addonNode.status == nil {
return clustersdkv1alpha1.ClusterRolloutStatus{}, fmt.Errorf("failed to get rollout status on cluster %v", clusterName)
}
return *addonNode.status, nil
}
func desiredConfigsEqual(a, b addonConfigMap) bool {
if len(a) != len(b) {
return false
}
for configgrA := range a {
if a[configgrA] != b[configgrA] {
return false
}
}
return true
}
func rolloutStatusHasCluster(clusterRolloutStatus []clustersdkv1alpha1.ClusterRolloutStatus, clusterName string) bool {
for _, s := range clusterRolloutStatus {
if s.ClusterName == clusterName {
return true
}
}
return false
}