mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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9e29f95618
Most of the volume plugins were removed from k/k. Refactor how KCM controllers initialize the few leftovers.
68 lines
2.8 KiB
Go
68 lines
2.8 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 app
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import (
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"k8s.io/component-base/featuregate"
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"k8s.io/csi-translation-lib/plugins"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/volume"
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"k8s.io/kubernetes/pkg/volume/csimigration"
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"k8s.io/kubernetes/pkg/volume/portworx"
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)
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type probeFn func() []volume.VolumePlugin
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func appendPluginBasedOnFeatureFlags(logger klog.Logger, plugins []volume.VolumePlugin, inTreePluginName string, featureGate featuregate.FeatureGate, pluginInfo pluginInfo) ([]volume.VolumePlugin, error) {
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_, err := csimigration.CheckMigrationFeatureFlags(featureGate, pluginInfo.pluginMigrationFeature, pluginInfo.pluginUnregisterFeature)
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if err != nil {
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logger.Error(err, "Unexpected CSI Migration Feature Flags combination detected. CSI Migration may not take effect")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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// TODO: fail and return here once alpha only tests can set the feature flags for a plugin correctly
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}
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// Skip appending the in-tree plugin to the list of plugins to be probed/initialized
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// if the plugin unregister feature flag is set
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if featureGate.Enabled(pluginInfo.pluginUnregisterFeature) {
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logger.Info("Skip registration of plugin since feature flag is enabled", "plugin", inTreePluginName, "feature", pluginInfo.pluginUnregisterFeature)
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return plugins, nil
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}
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plugins = append(plugins, pluginInfo.pluginProbeFunction()...)
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return plugins, nil
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}
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type pluginInfo struct {
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pluginMigrationFeature featuregate.Feature
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pluginUnregisterFeature featuregate.Feature
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pluginProbeFunction probeFn
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}
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func appendLegacyControllerProviders(logger klog.Logger, allPlugins []volume.VolumePlugin, featureGate featuregate.FeatureGate) ([]volume.VolumePlugin, error) {
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pluginMigrationStatus := make(map[string]pluginInfo)
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pluginMigrationStatus[plugins.PortworxVolumePluginName] = pluginInfo{pluginMigrationFeature: features.CSIMigrationPortworx, pluginUnregisterFeature: features.InTreePluginPortworxUnregister, pluginProbeFunction: portworx.ProbeVolumePlugins}
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var err error
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for pluginName, pluginInfo := range pluginMigrationStatus {
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allPlugins, err = appendPluginBasedOnFeatureFlags(logger, allPlugins, pluginName, featureGate, pluginInfo)
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if err != nil {
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return allPlugins, err
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}
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}
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return allPlugins, nil
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}
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