101 lines
2.9 KiB
Go
101 lines
2.9 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 backup
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import (
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/runtime"
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"github.com/heptio/ark/pkg/apis/ark/v1"
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"github.com/heptio/ark/pkg/kuberesource"
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"github.com/heptio/ark/pkg/util/collections"
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)
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// podAction implements ItemAction.
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type podAction struct {
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log logrus.FieldLogger
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}
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// NewPodAction creates a new ItemAction for pods.
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func NewPodAction(log logrus.FieldLogger) ItemAction {
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return &podAction{log: log}
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}
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// AppliesTo returns a ResourceSelector that applies only to pods.
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func (a *podAction) AppliesTo() (ResourceSelector, error) {
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return ResourceSelector{
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IncludedResources: []string{"pods"},
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}, nil
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}
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// Execute scans the pod's spec.volumes for persistentVolumeClaim volumes and returns a
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// ResourceIdentifier list containing references to all of the persistentVolumeClaim volumes used by
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// the pod. This ensures that when a pod is backed up, all referenced PVCs are backed up too.
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func (a *podAction) Execute(item runtime.Unstructured, backup *v1.Backup) (runtime.Unstructured, []ResourceIdentifier, error) {
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a.log.Info("Executing podAction")
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defer a.log.Info("Done executing podAction")
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pod := item.UnstructuredContent()
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if !collections.Exists(pod, "spec.volumes") {
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a.log.Info("pod has no volumes")
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return item, nil, nil
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}
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metadata, err := meta.Accessor(item)
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if err != nil {
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return nil, nil, errors.Wrap(err, "unable to access pod metadata")
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}
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volumes, err := collections.GetSlice(pod, "spec.volumes")
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if err != nil {
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return nil, nil, errors.WithMessage(err, "error getting spec.volumes")
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}
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var errs []error
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var additionalItems []ResourceIdentifier
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for i := range volumes {
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volume, ok := volumes[i].(map[string]interface{})
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if !ok {
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errs = append(errs, errors.Errorf("unexpected type %T", volumes[i]))
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continue
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}
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if !collections.Exists(volume, "persistentVolumeClaim.claimName") {
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continue
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}
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claimName, err := collections.GetString(volume, "persistentVolumeClaim.claimName")
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if err != nil {
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errs = append(errs, err)
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continue
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}
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a.log.Infof("Adding pvc %s to additionalItems", claimName)
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additionalItems = append(additionalItems, ResourceIdentifier{
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GroupResource: kuberesource.PersistentVolumeClaims,
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Namespace: metadata.GetNamespace(),
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Name: claimName,
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})
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}
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return item, additionalItems, nil
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}
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