Sok3t/descheduler
1
0
Fork 0
mirror of https://github.com/kubernetes-sigs/descheduler.git synced 2026-01-28 14:41:10 +01:00
Code Packages Releases Activity

refactor(pkg/operator): create a helper for registering indexer in the dry run mode

Browse Source
This commit is contained in:
Jan Chaloupka
2026-01-21 22:16:56 +01:00
parent b3f0184af8
commit 4af097a806
1 changed files with 26 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
pkg/descheduler/descheduler.go
View File

@@ -182,6 +182,30 @@ func addNodeSelectorIndexer(sharedInformerFactory informers.SharedInformerFactor
return nodeutil.AddNodeSelectorIndexer(sharedInformerFactory.Core().V1().Nodes().Informer(), indexerNodeSelectorGlobal, nodeSelector) return nodeutil.AddNodeSelectorIndexer(sharedInformerFactory.Core().V1().Nodes().Informer(), indexerNodeSelectorGlobal, nodeSelector)
} }
func setupInformerIndexers(sharedInformerFactory informers.SharedInformerFactory, deschedulerPolicy *api.DeschedulerPolicy) (podutil.GetPodsAssignedToNodeFunc, error) {
// create a new instance of the shared informer factory from the cached client
// register the pod informer, otherwise it will not get running
getPodsAssignedToNode, err := podutil.BuildGetPodsAssignedToNodeFunc(sharedInformerFactory.Core().V1().Pods().Informer())
if err != nil {
return nil, fmt.Errorf("build get pods assigned to node function error: %v", err)
}
// TODO(ingvagabund): copy paste all relevant indexers from the real client to the fake one
// TODO(ingvagabund): register one indexer per each profile. Respect the precedence of no profile-level node selector is specified.
// Also, keep a cache of node label selectors to detect duplicates to avoid creating an extra informer.
nodeSelector, err := nodeSelectorFromPolicy(deschedulerPolicy)
if err != nil {
return nil, err
}
if err := addNodeSelectorIndexer(sharedInformerFactory, nodeSelector); err != nil {
return nil, err
}
return getPodsAssignedToNode, nil
}
func metricsProviderListToMap(providersList []api.MetricsProvider) map[api.MetricsSource]*api.MetricsProvider { func metricsProviderListToMap(providersList []api.MetricsProvider) map[api.MetricsSource]*api.MetricsProvider {
providersMap := make(map[api.MetricsSource]*api.MetricsProvider) providersMap := make(map[api.MetricsSource]*api.MetricsProvider)
for _, provider := range providersList { for _, provider := range providersList {
@@ -406,25 +430,11 @@ func (d *descheduler) runDeschedulerLoop(ctx context.Context) error {
return err return err
} }
// create a new instance of the shared informer factor from the cached client getPodsAssignedToNode, err := setupInformerIndexers(d.kubeClientSandbox.fakeSharedInformerFactory(), d.deschedulerPolicy)
// register the pod informer, otherwise it will not get running
d.getPodsAssignedToNode, err = podutil.BuildGetPodsAssignedToNodeFunc(d.kubeClientSandbox.fakeSharedInformerFactory().Core().V1().Pods().Informer())
if err != nil {
return fmt.Errorf("build get pods assigned to node function error: %v", err)
}
// TODO(ingvagabund): copy paste all relevant indexers from the real client to the fake one
// TODO(ingvagabund): register one indexer per each profile. Respect the precedence of no profile-level node selector is specified.
// Also, keep a cache of node label selectors to detect duplicates to avoid creating an extra informer.
nodeSelector, err := nodeSelectorFromPolicy(d.deschedulerPolicy)
if err != nil { if err != nil {
return err return err
} }
d.getPodsAssignedToNode = getPodsAssignedToNode
if err := addNodeSelectorIndexer(d.kubeClientSandbox.fakeSharedInformerFactory(), nodeSelector); err != nil {
return err
}
fakeCtx, cncl := context.WithCancel(context.TODO()) fakeCtx, cncl := context.WithCancel(context.TODO())
defer cncl() defer cncl()