Add bootctl move command (#166)

* Add bootctl move command

* Update copyrights

* Add comments to bootctl move command

Author: SzymonSAP

REUSE.toml

@@ -6,11 +6,11 @@ SPDX-PackageDownloadLocation = "https://github.com/ironcore-dev/boot-operator"
 [[annotations]]
 path = [".github/**", ".gitignore", "CODEOWNERS", "Dockerfile", "Makefile", "PROJECT", "config/**", "gen/**", "go.mod", "go.sum", "hack/**", "server/**", "templates/**", "internal/**", "cmd/**", "api/**", "config/**", "test/**", "CONTRIBUTING.md", "PROJECT", "mkdocs.yml", ".dockerignore", ".golangci.yml", "REUSE.toml"]
 precedence = "aggregate"
-SPDX-FileCopyrightText = "2024 SAP SE or an SAP affiliate company and IronCore contributors"
+SPDX-FileCopyrightText = "2025 SAP SE or an SAP affiliate company and IronCore contributors"
 SPDX-License-Identifier = "Apache-2.0"
 
 [[annotations]]
 path = ["docs/**", "README.md"]
 precedence = "aggregate"
-SPDX-FileCopyrightText = "2024 SAP SE or an SAP affiliate company and IronCore contributors"
+SPDX-FileCopyrightText = "2025 SAP SE or an SAP affiliate company and IronCore contributors"
 SPDX-License-Identifier = "Apache-2.0"

api/v1alpha1/zz_generated.deepcopy.go

@@ -0,0 +1,32 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+package app
+
+import (
+	"github.com/spf13/cobra"
+	"k8s.io/apimachinery/pkg/runtime"
+
+	bootv1alphav1 "github.com/ironcore-dev/boot-operator/api/v1alpha1"
+	metalv1alpha1 "github.com/ironcore-dev/metal-operator/api/v1alpha1"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+)
+
+const Name string = "bootctl"
+
+var scheme = runtime.NewScheme()
+
+func init() {
+	utilruntime.Must(bootv1alphav1.AddToScheme(scheme))
+	utilruntime.Must(metalv1alpha1.AddToScheme(scheme))
+}
+
+func NewCommand() *cobra.Command {
+	root := &cobra.Command{
+		Use:   Name,
+		Short: "CLI client for boot-operator",
+		Args:  cobra.NoArgs,
+	}
+	root.AddCommand(NewMoveCommand())
+	return root
+}

cmd/bootctl/app/app.go

@@ -0,0 +1,79 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+package app
+
+import (
+	"fmt"
+	"log/slog"
+
+	"github.com/spf13/cobra"
+	"k8s.io/client-go/tools/clientcmd"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	utils "github.com/ironcore-dev/boot-operator/cmdutils"
+)
+
+var (
+	sourceKubeconfig string
+	targetKubeconfig string
+	namespace        string
+	requireOwners    bool
+	dryRun           bool
+	verbose          bool
+)
+
+func NewMoveCommand() *cobra.Command {
+	move := &cobra.Command{
+		Use:   "move",
+		Short: "Move boot-operator CRs from one cluster to another",
+		RunE:  runMove,
+	}
+	move.Flags().StringVar(&sourceKubeconfig, "source-kubeconfig", "", "Kubeconfig pointing to the source cluster")
+	move.Flags().StringVar(&targetKubeconfig, "target-kubeconfig", "", "Kubeconfig pointing to the target cluster")
+	move.Flags().StringVar(&namespace, "namespace", "",
+		"namespace to filter CRs to migrate. Defaults to all namespaces if not specified")
+	move.Flags().BoolVar(&requireOwners, "require-owners", false, "if set to true, an error will be returned if for any custom resource an owner ServerBootConfiguration is not present in the target cluster")
+	move.Flags().BoolVar(&dryRun, "dry-run", false, "show what would be moved without executing the migration")
+	move.Flags().BoolVar(&verbose, "verbose", false, "enable verbose logging for detailed output during migration")
+	_ = move.MarkFlagRequired("source-kubeconfig")
+	_ = move.MarkFlagRequired("target-kubeconfig")
+
+	if verbose {
+		slog.SetLogLoggerLevel(slog.LevelDebug)
+	}
+	return move
+}
+
+func makeClient(kubeconfig string) (client.Client, error) {
+	cfg, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load cluster kubeconfig: %w", err)
+	}
+	return client.New(cfg, client.Options{Scheme: scheme})
+}
+
+func makeClients() (utils.Clients, error) {
+	var clients utils.Clients
+	var err error
+
+	clients.Source, err = makeClient(sourceKubeconfig)
+	if err != nil {
+		return clients, fmt.Errorf("failed to construct a source cluster client: %w", err)
+	}
+	clients.Target, err = makeClient(targetKubeconfig)
+	if err != nil {
+		return clients, fmt.Errorf("failed to construct a target cluster client: %w", err)
+	}
+	return clients, nil
+}
+
+func runMove(cmd *cobra.Command, args []string) error {
+	clients, err := makeClients()
+	if err != nil {
+		return err
+	}
+	ctx := cmd.Context()
+
+	return utils.Move(ctx, clients, scheme, namespace, requireOwners, dryRun)
+}

cmd/bootctl/app/move.go

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/ironcore-dev/boot-operator/cmd/bootctl/app"
+	"sigs.k8s.io/controller-runtime/pkg/manager/signals"
+)
+
+func main() {
+	if err := app.NewCommand().ExecuteContext(signals.SetupSignalHandler()); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}

cmd/bootctl/main.go

@@ -0,0 +1,12 @@
+// SPDX-FileCopyrightText: 2025 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+package cmdutils
+
+import "sigs.k8s.io/controller-runtime/pkg/client"
+
+// Clients structure stores information about source and destination cluster clients.
+type Clients struct {
+	Source client.Client
+	Target client.Client
+}