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Merge pull request #44 from gianlucam76/restore
Add ability to store resources.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| /* | ||
| Copyright 2023. projectsveltos.io. All rights reserved. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package executor | ||
|
|
||
| import ( | ||
| "fmt" | ||
| appsv1alpha1 "gianlucam76/k8s-cleaner/api/v1alpha1" | ||
| "os" | ||
| "path" | ||
| "path/filepath" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| "gopkg.in/yaml.v2" | ||
| apimeta "k8s.io/apimachinery/pkg/api/meta" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
||
| logs "github.com/projectsveltos/libsveltos/lib/logsettings" | ||
| ) | ||
|
|
||
| const ( | ||
| permission0600 = 0600 | ||
| permission0644 = 0644 | ||
| permission0755 = 0755 | ||
| ) | ||
|
|
||
| func storeResources(processedResources []ResourceResult, scheme *runtime.Scheme, cleaner *appsv1alpha1.Cleaner, | ||
| logger logr.Logger) error { | ||
|
|
||
| if cleaner.Spec.StoreResourcePath == "" { | ||
| return nil | ||
| } | ||
|
|
||
| folder, err := getFolder(cleaner.Spec.StoreResourcePath, cleaner.Name, logger) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for i := range processedResources { | ||
| err = dumpObject(processedResources[i].Resource, scheme, *folder, logger) | ||
| if err != nil { | ||
| logger.V(logs.LogInfo).Info(fmt.Sprintf("failed to store object %s %s/%s: %v", | ||
| processedResources[i].Resource.GetKind(), processedResources[i].Resource.GetNamespace(), | ||
| processedResources[i].Resource.GetName(), err)) | ||
| // Error is ignored as Cleaner tries to store other resources | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
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| func getFolder(storage, cleanerName string, logger logr.Logger) (*string, error) { | ||
| l := logger.WithValues("cleaner", cleanerName) | ||
| l.V(logs.LogDebug).Info("getting directory containing collections for instance") | ||
|
|
||
| if _, err := os.Stat(storage); os.IsNotExist(err) { | ||
| logger.V(logs.LogInfo).Info(fmt.Sprintf("directory %s not found", storage)) | ||
| return nil, err | ||
| } | ||
|
|
||
| artifactFolder := filepath.Join(storage, cleanerName) | ||
|
|
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| return &artifactFolder, nil | ||
| } | ||
|
|
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| // dumpObject is a helper function to generically dump resource definition | ||
| // given the resource reference and file path for dumping location. | ||
| func dumpObject(resource *unstructured.Unstructured, scheme *runtime.Scheme, logPath string, logger logr.Logger) error { | ||
| // Do not store resource version | ||
| resource.SetResourceVersion("") | ||
| err := addTypeInformationToObject(scheme, resource) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| logger = logger.WithValues("kind", resource.GetObjectKind()) | ||
| logger = logger.WithValues("resource", fmt.Sprintf("%s %s", | ||
| resource.GetNamespace(), resource.GetName())) | ||
|
|
||
| if !resource.GetDeletionTimestamp().IsZero() { | ||
| logger.V(logs.LogDebug).Info("resource is marked for deletion. Do not collect it.") | ||
| } | ||
|
|
||
| resourceYAML, err := yaml.Marshal(resource.UnstructuredContent()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| metaObj, err := apimeta.Accessor(resource) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| kind := resource.GetObjectKind().GroupVersionKind().Kind | ||
| namespace := metaObj.GetNamespace() | ||
| name := metaObj.GetName() | ||
|
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| resourceFilePath := path.Join(logPath, namespace, kind, name+".yaml") | ||
| err = os.MkdirAll(filepath.Dir(resourceFilePath), permission0755) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| f, err := os.OpenFile(resourceFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, permission0644) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
|
||
| logger.V(logs.LogDebug).Info(fmt.Sprintf("storing resource in %s", resourceFilePath)) | ||
| return os.WriteFile(f.Name(), resourceYAML, permission0600) | ||
| } | ||
|
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||
| func addTypeInformationToObject(scheme *runtime.Scheme, obj client.Object) error { | ||
| gvks, _, err := scheme.ObjectKinds(obj) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for _, gvk := range gvks { | ||
| if gvk.Kind == "" { | ||
| continue | ||
| } | ||
| if gvk.Version == "" || gvk.Version == runtime.APIVersionInternal { | ||
| continue | ||
| } | ||
| obj.GetObjectKind().SetGroupVersionKind(gvk) | ||
| break | ||
| } | ||
|
|
||
| return nil | ||
| } |
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