84 lines
2.5 KiB
Go
84 lines
2.5 KiB
Go
/*
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Copyright 2017 Heptio Inc.
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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 restorers
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import (
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"k8s.io/apimachinery/pkg/runtime"
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api "github.com/heptio/ark/pkg/apis/ark/v1"
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"github.com/heptio/ark/pkg/util/collections"
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)
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// ResourceRestorer exposes the operations necessary to prepare Kubernetes resources
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// for restore and confirm their readiness following restoration via Ark.
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type ResourceRestorer interface {
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// Handles returns true if the Restorer should restore this object.
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Handles(obj runtime.Unstructured, restore *api.Restore) bool
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// Prepare gets an item ready to be restored
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Prepare(obj runtime.Unstructured, restore *api.Restore, backup *api.Backup) (runtime.Unstructured, error)
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// Wait returns true if restoration should wait for all of this restorer's resources to be ready before moving on to the next restorer.
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Wait() bool
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// Ready returns true if the given item is considered ready by the system. Only used if Wait() returns true.
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Ready(obj runtime.Unstructured) bool
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}
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func resetMetadataAndStatus(obj runtime.Unstructured, keepAnnotations bool) (runtime.Unstructured, error) {
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metadata, err := collections.GetMap(obj.UnstructuredContent(), "metadata")
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if err != nil {
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return nil, err
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}
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for k := range metadata {
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if k != "name" && k != "namespace" && k != "labels" && (!keepAnnotations || k != "annotations") {
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delete(metadata, k)
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}
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}
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delete(obj.UnstructuredContent(), "status")
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return obj, nil
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}
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var _ ResourceRestorer = &basicRestorer{}
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type basicRestorer struct {
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saveAnnotations bool
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}
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func (br *basicRestorer) Handles(obj runtime.Unstructured, restore *api.Restore) bool {
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return true
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}
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func (br *basicRestorer) Prepare(obj runtime.Unstructured, restore *api.Restore, backup *api.Backup) (runtime.Unstructured, error) {
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return resetMetadataAndStatus(obj, br.saveAnnotations)
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}
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func (br *basicRestorer) Wait() bool {
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return false
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}
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func (br *basicRestorer) Ready(obj runtime.Unstructured) bool {
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return true
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}
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func NewBasicRestorer(saveAnnotations bool) ResourceRestorer {
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return &basicRestorer{saveAnnotations: saveAnnotations}
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}
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