kubernetes helpers 源码
kubernetes helpers 代码
文件路径：/pkg/kubelet/cm/helpers.go
/*
Copyright 2018 The Kubernetes Authors.
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 cm
import (
"k8s.io/api/core/v1"
evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
)
// hardEvictionReservation returns a resourcelist that includes reservation of resources based on hard eviction thresholds.
func hardEvictionReservation(thresholds []evictionapi.Threshold, capacity v1.ResourceList) v1.ResourceList {
if len(thresholds) == 0 {
return nil
}
ret := v1.ResourceList{}
for _, threshold := range thresholds {
if threshold.Operator != evictionapi.OpLessThan {
continue
}
switch threshold.Signal {
case evictionapi.SignalMemoryAvailable:
memoryCapacity := capacity[v1.ResourceMemory]
value := evictionapi.GetThresholdQuantity(threshold.Value, &memoryCapacity)
ret[v1.ResourceMemory] = *value
case evictionapi.SignalNodeFsAvailable:
storageCapacity := capacity[v1.ResourceEphemeralStorage]
value := evictionapi.GetThresholdQuantity(threshold.Value, &storageCapacity)
ret[v1.ResourceEphemeralStorage] = *value
}
}
return ret
}
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