89 lines
3.1 KiB
Go
89 lines
3.1 KiB
Go
/*
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Copyright 2018 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 clientmgmt
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import (
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"github.com/pkg/errors"
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"github.com/heptio/velero/pkg/plugin/framework"
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"github.com/heptio/velero/pkg/plugin/velero"
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)
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// restartableRestoreItemAction is a restore item action for a given implementation (such as "pod"). It is associated with
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// a restartableProcess, which may be shared and used to run multiple plugins. At the beginning of each method
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// call, the restartableRestoreItemAction asks its restartableProcess to restart itself if needed (e.g. if the
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// process terminated for any reason), then it proceeds with the actual call.
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type restartableRestoreItemAction struct {
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key kindAndName
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sharedPluginProcess RestartableProcess
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config map[string]string
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}
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// newRestartableRestoreItemAction returns a new restartableRestoreItemAction.
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func newRestartableRestoreItemAction(name string, sharedPluginProcess RestartableProcess) *restartableRestoreItemAction {
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r := &restartableRestoreItemAction{
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key: kindAndName{kind: framework.PluginKindRestoreItemAction, name: name},
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sharedPluginProcess: sharedPluginProcess,
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}
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return r
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}
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// getRestoreItemAction returns the restore item action for this restartableRestoreItemAction. It does *not* restart the
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// plugin process.
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func (r *restartableRestoreItemAction) getRestoreItemAction() (velero.RestoreItemAction, error) {
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plugin, err := r.sharedPluginProcess.getByKindAndName(r.key)
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if err != nil {
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return nil, err
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}
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restoreItemAction, ok := plugin.(velero.RestoreItemAction)
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if !ok {
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return nil, errors.Errorf("%T is not a RestoreItemAction!", plugin)
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}
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return restoreItemAction, nil
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}
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// getDelegate restarts the plugin process (if needed) and returns the restore item action for this restartableRestoreItemAction.
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func (r *restartableRestoreItemAction) getDelegate() (velero.RestoreItemAction, error) {
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if err := r.sharedPluginProcess.resetIfNeeded(); err != nil {
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return nil, err
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}
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return r.getRestoreItemAction()
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}
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// AppliesTo restarts the plugin's process if needed, then delegates the call.
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func (r *restartableRestoreItemAction) AppliesTo() (velero.ResourceSelector, error) {
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delegate, err := r.getDelegate()
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if err != nil {
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return velero.ResourceSelector{}, err
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}
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return delegate.AppliesTo()
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}
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// Execute restarts the plugin's process if needed, then delegates the call.
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func (r *restartableRestoreItemAction) Execute(input *velero.RestoreItemActionExecuteInput) (*velero.RestoreItemActionExecuteOutput, error) {
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delegate, err := r.getDelegate()
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if err != nil {
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return nil, err
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}
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return delegate.Execute(input)
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}
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