Extend cluster get-kubeconfig cmd functionality

This PS will allow us to retrieve kubeconfig from different
kind of sources.

Change-Id: I31381cf466c58373efda40d06587e34bef411c68
Signed-off-by: Ruslan Aliev <raliev@mirantis.com>

cmd/cluster/get_kubeconfig.go

@@ -17,8 +17,7 @@ package cluster
 import (
 	"github.com/spf13/cobra"
 
-	"opendev.org/airship/airshipctl/pkg/clusterctl/client"
-	clusterctlcmd "opendev.org/airship/airshipctl/pkg/clusterctl/cmd"
+	"opendev.org/airship/airshipctl/pkg/cluster"
 	"opendev.org/airship/airshipctl/pkg/config"
 )
 
@@ -28,55 +27,28 @@ Retrieve cluster kubeconfig and print it to stdout
 `
 	getKubeconfigExample = `
 # Retrieve target-cluster kubeconfig
-airshipctl cluster get-kubeconfig target-cluster --kubeconfig /tmp/kubeconfig
+airshipctl cluster get-kubeconfig target-cluster
 `
 )
 
 // NewGetKubeconfigCommand creates a command which retrieves cluster kubeconfig
 func NewGetKubeconfigCommand(cfgFactory config.Factory) *cobra.Command {
-	o := &client.GetKubeconfigOptions{}
 	cmd := &cobra.Command{
 		Use:     "get-kubeconfig [cluster_name]",
 		Short:   "Retrieve kubeconfig for a desired cluster",
 		Long:    getKubeconfigLong[1:],
 		Example: getKubeconfigExample[1:],
 		Args:    cobra.ExactArgs(1),
-		RunE:    getKubeconfigRunE(cfgFactory, o),
+		RunE:    getKubeconfigRunE(cfgFactory),
 	}
 
-	initFlags(o, cmd)
-
 	return cmd
 }
 
-func initFlags(o *client.GetKubeconfigOptions, cmd *cobra.Command) {
-	flags := cmd.Flags()
-
-	flags.StringVar(
-		&o.ParentKubeconfigPath,
-		"kubeconfig",
-		"",
-		"path to kubeconfig associated with parental cluster")
-
-	flags.StringVarP(
-		&o.ManagedClusterNamespace,
-		"namespace",
-		"n",
-		"default",
-		"namespace where cluster is located, if not specified default one will be used")
-
-	flags.StringVar(
-		&o.ParentKubeconfigContext,
-		"context",
-		"",
-		"specify context within the kubeconfig file")
-}
-
 // getKubeconfigRunE returns a function to cobra command to be executed in runtime
-func getKubeconfigRunE(cfgFactory config.Factory, o *client.GetKubeconfigOptions) func(
+func getKubeconfigRunE(cfgFactory config.Factory) func(
 	cmd *cobra.Command, args []string) error {
 	return func(cmd *cobra.Command, args []string) error {
-		o.ManagedClusterName = args[0]
-		return clusterctlcmd.GetKubeconfig(cfgFactory, o, cmd.OutOrStdout())
+		return cluster.GetKubeconfig(cfgFactory, args[0], cmd.OutOrStdout())
 	}
 }

cmd/cluster/testdata/TestNewKubeConfigCommandCmdGoldenOutput/cluster-get-kubeconfig-cmd-with-help.golden

@@ -5,11 +5,8 @@ Usage:
 
 Examples:
 # Retrieve target-cluster kubeconfig
-airshipctl cluster get-kubeconfig target-cluster --kubeconfig /tmp/kubeconfig
+airshipctl cluster get-kubeconfig target-cluster
 
 
 Flags:
-      --context string      specify context within the kubeconfig file
-  -h, --help                help for get-kubeconfig
-      --kubeconfig string   path to kubeconfig associated with parental cluster
-  -n, --namespace string    namespace where cluster is located, if not specified default one will be used (default "default")
+  -h, --help   help for get-kubeconfig

docs/source/cli/airshipctl_cluster_get-kubeconfig.md

@@ -15,17 +15,14 @@ airshipctl cluster get-kubeconfig [cluster_name] [flags]
 
 ```
 # Retrieve target-cluster kubeconfig
-airshipctl cluster get-kubeconfig target-cluster --kubeconfig /tmp/kubeconfig
+airshipctl cluster get-kubeconfig target-cluster
 
 ```
 
 ### Options
 
 ```
-      --context string      specify context within the kubeconfig file
-  -h, --help                help for get-kubeconfig
-      --kubeconfig string   path to kubeconfig associated with parental cluster
-  -n, --namespace string    namespace where cluster is located, if not specified default one will be used (default "default")
+  -h, --help   help for get-kubeconfig
 ```
 
 ### Options inherited from parent commands

pkg/cluster/command.go

@@ -18,7 +18,12 @@ import (
 	"fmt"
 	"io"
 
+	airshipv1 "opendev.org/airship/airshipctl/pkg/api/v1alpha1"
+	"opendev.org/airship/airshipctl/pkg/clusterctl/client"
+	"opendev.org/airship/airshipctl/pkg/config"
+	"opendev.org/airship/airshipctl/pkg/k8s/kubeconfig"
 	"opendev.org/airship/airshipctl/pkg/log"
+	"opendev.org/airship/airshipctl/pkg/phase"
 	"opendev.org/airship/airshipctl/pkg/util"
 )
 
@@ -50,3 +55,41 @@ func StatusRunner(o StatusOptions, w io.Writer) error {
 	}
 	return nil
 }
+
+// GetKubeconfig creates new kubeconfig interface object from secret and prints its content to writer
+func GetKubeconfig(cfgFactory config.Factory, clusterName string, writer io.Writer) error {
+	cfg, err := cfgFactory()
+	if err != nil {
+		return err
+	}
+
+	helper, err := phase.NewHelper(cfg)
+	if err != nil {
+		return err
+	}
+
+	cMap, err := helper.ClusterMap()
+	if err != nil {
+		return err
+	}
+
+	wd, err := helper.WorkDir()
+	if err != nil {
+		return err
+	}
+
+	client, err := client.NewClient(helper.TargetPath(), log.DebugEnabled(), airshipv1.DefaultClusterctl())
+	if err != nil {
+		return err
+	}
+
+	kubeconf := kubeconfig.NewBuilder().
+		WithBundle(helper.PhaseBundleRoot()).
+		WithClusterctClient(client).
+		WithClusterMap(cMap).
+		WithClusterName(clusterName).
+		WithTempRoot(wd).
+		Build()
+
+	return kubeconf.Write(writer)
+}

pkg/clusterctl/cmd/command.go

@@ -15,13 +15,10 @@
 package cmd
 
 import (
-	"io"
-
 	airshipv1 "opendev.org/airship/airshipctl/pkg/api/v1alpha1"
 	"opendev.org/airship/airshipctl/pkg/clusterctl/client"
 	"opendev.org/airship/airshipctl/pkg/config"
 	"opendev.org/airship/airshipctl/pkg/document"
-	"opendev.org/airship/airshipctl/pkg/k8s/kubeconfig"
 	"opendev.org/airship/airshipctl/pkg/log"
 	"opendev.org/airship/airshipctl/pkg/phase"
 )
@@ -108,22 +105,3 @@ func (c *Command) Move(toKubeconfigContext string) error {
 	}
 	return c.client.Move(c.kubeconfigPath, c.kubeconfigContext, c.kubeconfigPath, toKubeconfigContext, "")
 }
-
-// GetKubeconfig creates new kubeconfig interface object from secret and prints its content to writer
-func GetKubeconfig(cfgFactory config.Factory, options *client.GetKubeconfigOptions, writer io.Writer) error {
-	cfg, err := cfgFactory()
-	if err != nil {
-		return err
-	}
-
-	targetPath, err := cfg.CurrentContextTargetPath()
-	if err != nil {
-		return err
-	}
-
-	client, err := client.NewClient(targetPath, log.DebugEnabled(), &airshipv1.Clusterctl{})
-	if err != nil {
-		return err
-	}
-	return kubeconfig.NewKubeConfig(kubeconfig.FromSecret(client, options)).Write(writer)
-}