90 lines
3.6 KiB
Go
90 lines
3.6 KiB
Go
/*
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Copyright 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 restore
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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/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"github.com/vmware-tanzu/velero/pkg/plugin/velero"
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)
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// AdmissionWebhookConfigurationAction is a RestoreItemAction plugin applicable to mutatingwebhookconfiguration and
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// validatingwebhookconfiguration to reset the invalid value for "sideEffects" of the webhooks.
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// More background please refer to https://github.com/vmware-tanzu/velero/issues/3516
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type AdmissionWebhookConfigurationAction struct {
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logger logrus.FieldLogger
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}
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// NewAdmissionWebhookConfigurationAction creates a new instance of AdmissionWebhookConfigurationAction
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func NewAdmissionWebhookConfigurationAction(logger logrus.FieldLogger) *AdmissionWebhookConfigurationAction {
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return &AdmissionWebhookConfigurationAction{logger: logger}
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}
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// AppliesTo implements the RestoreItemAction plugin interface method.
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func (a *AdmissionWebhookConfigurationAction) AppliesTo() (velero.ResourceSelector, error) {
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return velero.ResourceSelector{
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IncludedResources: []string{"mutatingwebhookconfigurations", "validatingwebhookconfigurations"},
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}, nil
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}
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// Execute will reset the value of "sideEffects" attribute of each item in the "webhooks" list to "None" if they are invalid values for
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// v1, such as "Unknown" or "Some"
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func (a *AdmissionWebhookConfigurationAction) Execute(input *velero.RestoreItemActionExecuteInput) (*velero.RestoreItemActionExecuteOutput, error) {
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a.logger.Info("Executing ChangeStorageClassAction")
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defer a.logger.Info("Done executing ChangeStorageClassAction")
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item := input.Item
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apiVersion, _, err := unstructured.NestedString(item.UnstructuredContent(), "apiVersion")
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if err != nil {
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return nil, errors.Wrap(err, "failed to get the apiVersion from input item")
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}
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name, _, _ := unstructured.NestedString(item.UnstructuredContent(), "metadata", "name")
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logger := a.logger.WithField("resource_name", name)
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if apiVersion != "admissionregistration.k8s.io/v1" {
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logger.Infof("unable to handle api version: %s, skip", apiVersion)
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return velero.NewRestoreItemActionExecuteOutput(input.Item), nil
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}
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webhooks, ok, err := unstructured.NestedSlice(item.UnstructuredContent(), "webhooks")
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if err != nil {
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return nil, errors.Wrap(err, "failed to get webhooks slice from input item")
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}
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if !ok {
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logger.Info("webhooks is not set, skip")
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return velero.NewRestoreItemActionExecuteOutput(input.Item), nil
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}
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newWebhooks := make([]interface{}, 0)
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for i := range webhooks {
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logger2 := logger.WithField("index", i)
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obj, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&webhooks[i])
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if err != nil {
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logger2.Errorf("failed to convert the webhook entry, error: %v, it will be dropped", err)
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continue
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}
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s, _, _ := unstructured.NestedString(obj, "sideEffects")
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if s != "None" && s != "NoneOnDryRun" {
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logger2.Infof("reset the invalid sideEffects value '%s' to 'None'", s)
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obj["sideEffects"] = "None"
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}
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newWebhooks = append(newWebhooks, obj)
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}
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item.UnstructuredContent()["webhooks"] = newWebhooks
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return velero.NewRestoreItemActionExecuteOutput(item), nil
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}
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