
The implementation consists of - identifying all places where VolumeSource.PersistentVolumeClaim has a special meaning and then ensuring that the same code path is taken for an ephemeral volume, with the ownership check - adding a controller that produces the PVCs for each embedded VolumeSource.EphemeralVolume - relaxing the PVC protection controller such that it removes the finalizer already before the pod is deleted (only if the GenericEphemeralVolume feature is enabled): this is needed to break a cycle where foreground deletion of the pod blocks on removing the PVC, which waits for deletion of the pod The controller was derived from the endpointslices controller.
22 lines
799 B
Go
22 lines
799 B
Go
/*
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Copyright 2020 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 ephemeral implements the controller part of
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// https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/1698-generic-ephemeral-volumes
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//
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// It was derived from the expand controller.
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package ephemeral
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