137 lines
3.8 KiB
Go
137 lines
3.8 KiB
Go
/*
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Copyright 2017, 2019 the Velero contributors.
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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 framework
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import (
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"encoding/json"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
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proto "github.com/vmware-tanzu/velero/pkg/plugin/generated"
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"github.com/vmware-tanzu/velero/pkg/plugin/velero"
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)
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// BackupItemActionGRPCServer implements the proto-generated BackupItemAction interface, and accepts
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// gRPC calls and forwards them to an implementation of the pluggable interface.
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type BackupItemActionGRPCServer struct {
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mux *serverMux
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}
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func (s *BackupItemActionGRPCServer) getImpl(name string) (velero.BackupItemAction, error) {
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impl, err := s.mux.getHandler(name)
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if err != nil {
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return nil, err
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}
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itemAction, ok := impl.(velero.BackupItemAction)
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if !ok {
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return nil, errors.Errorf("%T is not a backup item action", impl)
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}
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return itemAction, nil
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}
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func (s *BackupItemActionGRPCServer) AppliesTo(ctx context.Context, req *proto.BackupItemActionAppliesToRequest) (response *proto.BackupItemActionAppliesToResponse, err error) {
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defer func() {
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if recoveredErr := handlePanic(recover()); recoveredErr != nil {
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err = recoveredErr
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}
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}()
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impl, err := s.getImpl(req.Plugin)
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if err != nil {
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return nil, newGRPCError(err)
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}
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resourceSelector, err := impl.AppliesTo()
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if err != nil {
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return nil, newGRPCError(err)
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}
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return &proto.BackupItemActionAppliesToResponse{
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&proto.ResourceSelector{
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IncludedNamespaces: resourceSelector.IncludedNamespaces,
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ExcludedNamespaces: resourceSelector.ExcludedNamespaces,
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IncludedResources: resourceSelector.IncludedResources,
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ExcludedResources: resourceSelector.ExcludedResources,
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Selector: resourceSelector.LabelSelector,
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},
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}, nil
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}
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func (s *BackupItemActionGRPCServer) Execute(ctx context.Context, req *proto.ExecuteRequest) (response *proto.ExecuteResponse, err error) {
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defer func() {
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if recoveredErr := handlePanic(recover()); recoveredErr != nil {
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err = recoveredErr
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}
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}()
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impl, err := s.getImpl(req.Plugin)
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if err != nil {
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return nil, newGRPCError(err)
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}
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var item unstructured.Unstructured
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var backup api.Backup
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if err := json.Unmarshal(req.Item, &item); err != nil {
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return nil, newGRPCError(errors.WithStack(err))
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}
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if err := json.Unmarshal(req.Backup, &backup); err != nil {
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return nil, newGRPCError(errors.WithStack(err))
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}
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updatedItem, additionalItems, err := impl.Execute(&item, &backup)
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if err != nil {
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return nil, newGRPCError(err)
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}
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// If the plugin implementation returned a nil updatedItem (meaning no modifications), reset updatedItem to the
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// original item.
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var updatedItemJSON []byte
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if updatedItem == nil {
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updatedItemJSON = req.Item
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} else {
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updatedItemJSON, err = json.Marshal(updatedItem.UnstructuredContent())
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if err != nil {
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return nil, newGRPCError(errors.WithStack(err))
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}
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}
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res := &proto.ExecuteResponse{
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Item: updatedItemJSON,
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}
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for _, item := range additionalItems {
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res.AdditionalItems = append(res.AdditionalItems, backupResourceIdentifierToProto(item))
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}
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return res, nil
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}
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func backupResourceIdentifierToProto(id velero.ResourceIdentifier) *proto.ResourceIdentifier {
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return &proto.ResourceIdentifier{
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Group: id.Group,
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Resource: id.Resource,
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Namespace: id.Namespace,
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Name: id.Name,
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}
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}
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