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* Enhance the `restore` tool Signed-off-by: loheagn <[email protected]> * Add `backup` tool Signed-off-by: loheagn <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "context" | ||
| "log" | ||
| "os" | ||
|
|
||
| "github.com/oam-dev/terraform-controller/api/v1beta2" | ||
| "github.com/oam-dev/terraform-controller/controllers/configuration/backend" | ||
| "github.com/spf13/cobra" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/cli-runtime/pkg/genericclioptions" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| var configurationName string | ||
|
|
||
| // newBackupCmd represents the backup command | ||
| func newBackupCmd(kubeFlags *genericclioptions.ConfigFlags) *cobra.Command { | ||
| restoreCmd := &cobra.Command{ | ||
| Use: "backup", | ||
| PreRunE: func(cmd *cobra.Command, args []string) error { | ||
| if configurationName == "" { | ||
| log.Fatal("please provide the name of the configuration which need to be backed up") | ||
| } | ||
| return nil | ||
| }, | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| err := buildK8SClient(kubeFlags) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return backup(context.Background()) | ||
| }, | ||
| } | ||
| restoreCmd.Flags().StringVar(&configurationName, "name", "", "the name of the configuration which needs to be backed up") | ||
| return restoreCmd | ||
| } | ||
|
|
||
| func backup(ctx context.Context) error { | ||
| configuration := &v1beta2.Configuration{} | ||
| if err := k8sClient.Get(ctx, client.ObjectKey{Name: configurationName, Namespace: currentNS}, configuration); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // backup the state | ||
| if err := backupTFState(ctx, configuration); err != nil { | ||
| log.Fatalf("back up the Terraform state failed: %s \n", err.Error()) | ||
| } | ||
|
|
||
| // backup the configuration | ||
| serializer := buildSerializer() | ||
| f, err := os.Create("configuration.yaml") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
| if _, err := f.WriteString("apiVersion: terraform.core.oam.dev/v1beta2\nkind: Configuration\n"); err != nil { | ||
| return err | ||
| } | ||
| cleanUpConfiguration(configuration) | ||
| if err := serializer.Encode(configuration, f); err != nil { | ||
| return err | ||
| } | ||
| log.Println("back up the Terraform state to configuration.yaml") | ||
| return nil | ||
| } | ||
|
|
||
| func backupTFState(ctx context.Context, configuration *v1beta2.Configuration) error { | ||
| backendInterface, err := backend.ParseConfigurationBackend(configuration, k8sClient) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| k8sBackend, ok := backendInterface.(*backend.K8SBackend) | ||
| if !ok { | ||
| log.Println("the configuration doesn't use the kubernetes backend, the Terraform state won't be backed up") | ||
| return nil | ||
| } | ||
|
|
||
| secret := &v1.Secret{} | ||
| if err := k8sClient.Get(ctx, client.ObjectKey{Name: getSecretName(k8sBackend), Namespace: currentNS}, secret); err != nil { | ||
| return err | ||
| } | ||
| stateData := string(secret.Data["tfstate"]) | ||
| state, err := decompressTRState(stateData) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| if err := os.WriteFile("state.json", state, os.ModePerm); err != nil { | ||
| return err | ||
| } | ||
| log.Println("back up the Terraform state to state.json") | ||
| return nil | ||
| } |
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