Introduce new command to generate kubeconfig

cmd/sveltosctl/main.go

@@ -48,6 +48,8 @@ func main() {
     snapshot       Displays collected snaphost. Visualize diffs between two collected snapshots.
     techsupport    Displays collected techsupport.
     register       Onboard an existing non CAPI cluster by creating all necessary internal resources.
+    generate       Generates a Kubeconfig that can later be used to register a cluster.
+                   Run this command with sveltosctl pointing to the cluster you want Sveltos to manage.
     log-level      Allows changing the log verbosity.
     version        Display the version of sveltosctl.
 
@@ -105,6 +107,8 @@ Description:
 			err = commands.Techsupport(ctx, args, logger)
 		case "register":
 			err = commands.RegisterCluster(ctx, args, logger)
+		case "generate":
+			err = commands.Generate(ctx, args, logger)
 		case "log-level":
 			err = commands.LogLevel(ctx, args, logger)
 		case "version":

internal/commands/generate.go

@@ -0,0 +1,78 @@
+/*
+Copyright 2024. 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 commands
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+
+	docopt "github.com/docopt/docopt-go"
+	"github.com/go-logr/logr"
+
+	logs "github.com/projectsveltos/libsveltos/lib/logsettings"
+	"github.com/projectsveltos/sveltosctl/internal/commands/generate"
+)
+
+// Generate takes care generating a kubeconfig
+func Generate(ctx context.Context, args []string, logger logr.Logger) error {
+	doc := `Usage:
+	sveltosctl generate <command> [<args>...]
+
+        kubeconfig    Generates a Kubeconfig. The generated Kubeconfig can then be used to register a cluster.
+                      Run this command while pointing to the managed cluster.
+
+Options:
+	-h --help      Show this screen.
+
+Description:
+	See 'sveltosctl generate kubeconfig --help' to read about a specific subcommand.
+  `
+
+	parser := &docopt.Parser{
+		HelpHandler:   docopt.PrintHelpAndExit,
+		OptionsFirst:  true,
+		SkipHelpFlags: false,
+	}
+
+	opts, err := parser.ParseArgs(doc, nil, "1.0")
+	if err != nil {
+		var userError docopt.UserError
+		if errors.As(err, &userError) {
+			logger.V(logs.LogInfo).Info(fmt.Sprintf(
+				"Invalid option: 'sveltosctl %s'. Use flag '--help' to read about a specific subcommand.\n",
+				strings.Join(os.Args[1:], " "),
+			))
+		}
+		os.Exit(1)
+	}
+
+	command := opts["<command>"].(string)
+	arguments := append([]string{"logLevel", command}, opts["<args>"].([]string)...)
+
+	switch command {
+	case "kubeconfig":
+		return generate.GenerateKubeconfig(ctx, arguments, logger)
+	default:
+		//nolint: forbidigo // print doc
+		fmt.Println(doc)
+	}
+
+	return nil
+}

internal/commands/generate/export_test.go

@@ -0,0 +1,27 @@
+/*
+Copyright 2024. 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 generate
+
+const (
+	Projectsveltos = projectsveltos
+)
+
+var (
+	CreateNamespace          = createNamespace
+	CreateClusterRole        = createClusterRole
+	CreateClusterRoleBinding = createClusterRoleBinding
+)