Merge pull request #230 from banzaicloud/config-download

Add cluster config command

internal/cli/command/cluster/cmd.go

@@ -39,6 +39,7 @@ func NewClusterCommand(banzaiCli cli.Cli) *cobra.Command {
 		NewImportCommand(banzaiCli),
 		NewListCommand(banzaiCli),
 		NewShellCommand(banzaiCli),
+		NewConfigCommand(banzaiCli),
 		integratedservice.NewIntegratedServiceCommand(banzaiCli),
 		node.NewNodeCommand(banzaiCli),
 		nodepool.NewNodePoolCommand(banzaiCli),

internal/cli/command/cluster/config.go

@@ -0,0 +1,88 @@
+// Copyright © 2020 Banzai Cloud
+//
+// 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 cluster
+
+import (
+	"context"
+	"fmt"
+	"io/ioutil"
+	"path"
+
+	"emperror.dev/errors"
+	"github.com/mitchellh/go-homedir"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+
+	"github.com/banzaicloud/banzai-cli/internal/cli"
+	clustercontext "github.com/banzaicloud/banzai-cli/internal/cli/command/cluster/context"
+)
+
+type configOptions struct {
+	clustercontext.Context
+	path string
+}
+
+func NewConfigCommand(banzaiCli cli.Cli) *cobra.Command {
+	options := configOptions{}
+
+	cmd := &cobra.Command{
+		Use:     "config [--cluster=ID | [--cluster-name=]NAME]",
+		Aliases: []string{"co"},
+		Short:   "Get K8S config",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runDownloadConfig(banzaiCli, options, args)
+		},
+	}
+	options.Context = clustercontext.NewClusterContext(cmd, banzaiCli, "config")
+
+	flags := cmd.Flags()
+	flags.StringVarP(&options.path, "path", "p", "", "Path to save cluster K8S config")
+
+	return cmd
+}
+
+func runDownloadConfig(banzaiCli cli.Cli, options configOptions, args []string) error {
+	if err := options.Init(args...); err != nil {
+		return err
+	}
+
+	orgId := banzaiCli.Context().OrganizationID()
+	id := options.ClusterID()
+
+	config, _, err := banzaiCli.Client().ClustersApi.GetClusterConfig(context.Background(), orgId, id)
+	if err != nil {
+		return errors.WrapIf(err, "could not get cluster config")
+	}
+
+	if options.path == "" {
+		options.path = "."
+	}
+
+	// expand the path to include the home directory if the path is prefixed with `~`
+	myPath, err := homedir.Expand(options.path)
+	if err != nil {
+		return errors.WrapIf(err, "failed to expand the path to include the home directory")
+	}
+
+	var p = path.Join(myPath, fmt.Sprintf("%s.yaml", options.ClusterName()))
+	err = ioutil.WriteFile(p, []byte(config.Data), 0644)
+	if err != nil {
+		return errors.WrapIf(err, "failed to write initial repository config")
+	}
+
+	log.Infof("K8S config saved: %s", p)
+
+	return nil
+}