80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
/*
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Copyright 2018 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 tpu
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import (
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"strings"
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apiv1 "k8s.io/api/core/v1"
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)
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const (
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// ResourceTPUPrefix is the prefix of the TPU resource names.
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ResourceTPUPrefix = "cloud-tpus.google.com/"
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)
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func hasTPURequest(pod *apiv1.Pod) bool {
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for _, container := range pod.Spec.Containers {
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for name := range container.Resources.Requests {
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if strings.HasPrefix(string(name), ResourceTPUPrefix) {
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return true
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}
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}
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}
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return false
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}
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func clearTPURequest(pod *apiv1.Pod) *apiv1.Pod {
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sanitized := pod.DeepCopy()
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for _, container := range sanitized.Spec.Containers {
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for name := range container.Resources.Requests {
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if strings.HasPrefix(string(name), ResourceTPUPrefix) {
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delete(container.Resources.Requests, name)
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}
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}
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}
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return sanitized
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}
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// ClearTPURequests clears TPU requests for pods, so they don't interfere with scheduling
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// simulations. This isn't yet zone-aware.
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func ClearTPURequests(pods []*apiv1.Pod) []*apiv1.Pod {
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podsWithTPU := make(map[int]*apiv1.Pod)
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for i, pod := range pods {
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if hasTPURequest(pod) {
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podsWithTPU[i] = clearTPURequest(pod)
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}
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}
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if len(podsWithTPU) == 0 {
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return pods
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}
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// Copy slice only if we need to replace some pods.
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sanitizedPods := make([]*apiv1.Pod, len(pods))
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for i, pod := range pods {
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if sanitized, found := podsWithTPU[i]; found {
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sanitizedPods[i] = sanitized
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} else {
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sanitizedPods[i] = pod
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}
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}
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return sanitizedPods
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}
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