mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
/*
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Copyright 2019 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 nodevolumelimits
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import (
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"strings"
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"k8s.io/api/core/v1"
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storagev1 "k8s.io/api/storage/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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csilibplugins "k8s.io/csi-translation-lib/plugins"
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v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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)
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// isCSIMigrationOn returns a boolean value indicating whether
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// the CSI migration has been enabled for a particular storage plugin.
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func isCSIMigrationOn(csiNode *storagev1.CSINode, pluginName string) bool {
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if csiNode == nil || len(pluginName) == 0 {
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return false
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}
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// In-tree storage to CSI driver migration feature should be enabled,
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// along with the plugin-specific one
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigration) {
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return false
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}
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switch pluginName {
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case csilibplugins.AWSEBSInTreePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationAWS) {
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return false
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}
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case csilibplugins.PortworxVolumePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationPortworx) {
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return false
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}
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case csilibplugins.GCEPDInTreePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationGCE) {
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return false
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}
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case csilibplugins.AzureDiskInTreePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationAzureDisk) {
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return false
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}
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case csilibplugins.CinderInTreePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationOpenStack) {
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return false
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}
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case csilibplugins.RBDVolumePluginName:
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if !utilfeature.DefaultFeatureGate.Enabled(features.CSIMigrationRBD) {
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return false
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}
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default:
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return false
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}
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// The plugin name should be listed in the CSINode object annotation.
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// This indicates that the plugin has been migrated to a CSI driver in the node.
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csiNodeAnn := csiNode.GetAnnotations()
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if csiNodeAnn == nil {
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return false
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}
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var mpaSet sets.String
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mpa := csiNodeAnn[v1.MigratedPluginsAnnotationKey]
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if len(mpa) == 0 {
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mpaSet = sets.NewString()
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} else {
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tok := strings.Split(mpa, ",")
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mpaSet = sets.NewString(tok...)
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}
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return mpaSet.Has(pluginName)
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}
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// volumeLimits returns volume limits associated with the node.
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func volumeLimits(n *framework.NodeInfo) map[v1.ResourceName]int64 {
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volumeLimits := map[v1.ResourceName]int64{}
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for k, v := range n.Allocatable.ScalarResources {
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if v1helper.IsAttachableVolumeResourceName(k) {
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volumeLimits[k] = v
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}
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}
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return volumeLimits
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}
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