65 lines
2.1 KiB
Go
65 lines
2.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package simulator
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import (
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apiv1 "k8s.io/api/core/v1"
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schedulerframework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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"k8s.io/autoscaler/cluster-autoscaler/utils/errors"
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pod_util "k8s.io/autoscaler/cluster-autoscaler/utils/pod"
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)
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// getRequiredPodsForNode returns a list of pods that would appear on the node if the
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// node was just created (like daemonset and manifest-run pods). It reuses kubectl
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// drain command to get the list.
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func getRequiredPodsForNode(nodename string, podsForNodes map[string][]*apiv1.Pod) ([]*apiv1.Pod, errors.AutoscalerError) {
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allPods := podsForNodes[nodename]
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return filterRequiredPodsForNode(allPods), nil
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}
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// BuildNodeInfoForNode build a NodeInfo structure for the given node as if the node was just created.
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func BuildNodeInfoForNode(node *apiv1.Node, podsForNodes map[string][]*apiv1.Pod) (*schedulerframework.NodeInfo, errors.AutoscalerError) {
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requiredPods, err := getRequiredPodsForNode(node.Name, podsForNodes)
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if err != nil {
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return nil, err
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}
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result := schedulerframework.NewNodeInfo(requiredPods...)
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if err := result.SetNode(node); err != nil {
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return nil, errors.ToAutoscalerError(errors.InternalError, err)
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}
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return result, nil
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}
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func filterRequiredPodsForNode(allPods []*apiv1.Pod) []*apiv1.Pod {
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var selectedPods []*apiv1.Pod
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for id, pod := range allPods {
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// Ignore pod in deletion phase
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if pod.DeletionTimestamp != nil {
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continue
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}
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if pod_util.IsMirrorPod(pod) || pod_util.IsDaemonSetPod(pod) {
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selectedPods = append(selectedPods, allPods[id])
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}
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}
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return selectedPods
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}
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