From 6e05aece3aaf7ab6b4057a1a49e953b4a7f55083 Mon Sep 17 00:00:00 2001
From: cmoulliard <cmoulliard@redhat.com>
Date: Thu, 14 Nov 2024 11:36:47 +0100
Subject: [PATCH] Show the kube API server URL, if TLS is checked. #445

Signed-off-by: cmoulliard <cmoulliard@redhat.com>
---
 pkg/cmd/get/clusters.go | 32 ++++++++++++++++++++++++++++----
 pkg/cmd/helpers/k8s.go  | 10 ++++++++++
 2 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/pkg/cmd/get/clusters.go b/pkg/cmd/get/clusters.go
index 842b349d..f2fa0948 100644
--- a/pkg/cmd/get/clusters.go
+++ b/pkg/cmd/get/clusters.go
@@ -8,6 +8,7 @@ import (
 	"github.com/cnoe-io/idpbuilder/pkg/util"
 	"github.com/spf13/cobra"
 	corev1 "k8s.io/api/core/v1"
+	"k8s.io/client-go/tools/clientcmd/api"
 	"os"
 	"sigs.k8s.io/kind/pkg/cluster"
 )
@@ -26,6 +27,12 @@ func preClustersE(cmd *cobra.Command, args []string) error {
 	return helpers.SetLogger()
 }
 
+// findClusterByName searches for a cluster by name in the kubeconfig
+func findClusterByName(config *api.Config, name string) (*api.Cluster, bool) {
+	cluster, exists := config.Clusters[name]
+	return cluster, exists
+}
+
 func list(cmd *cobra.Command, args []string) error {
 	logger := helpers.CmdLogger
 
@@ -47,19 +54,36 @@ func list(cmd *cobra.Command, args []string) error {
 		os.Exit(1)
 	}
 
+	// List the idp builder clusters according to the provider: podman or docker
 	provider := cluster.NewProvider(cluster.ProviderWithLogger(kind.KindLoggerFromLogr(&logger)), detectOpt)
 	clusters, err := provider.List()
 	if err != nil {
 		logger.Error(err, "failed to list clusters.")
 	}
 
-	for _, c := range clusters {
-		fmt.Printf("Cluster: %s\n", c)
+	for _, cluster := range clusters {
+		fmt.Printf("Cluster: %s\n", cluster)
+
+		config, err := helpers.LoadKubeConfig()
+		if err != nil {
+			logger.Error(err, "failed to load the kube config.")
+		}
+
+		// Search about the idp cluster within the kubeconfig file
+		cluster, found := findClusterByName(config, "kind-"+cluster)
+		if !found {
+			fmt.Printf("Cluster %q not found\n", cluster)
+		} else {
+			fmt.Printf("URL of the kube API server: %s\n", cluster.Server)
+			fmt.Printf("TLS Verify: %t\n", cluster.InsecureSkipTLSVerify)
+		}
+
 		var nodeList corev1.NodeList
-		err := cli.List(context.TODO(), &nodeList)
+		err = cli.List(context.TODO(), &nodeList)
 		if err != nil {
-			logger.Error(err, "failed to list nodes for cluster: %s", c)
+			logger.Error(err, "failed to list nodes for cluster: %s", cluster)
 		}
+
 		for _, node := range nodeList.Items {
 			nodeName := node.Name
 			fmt.Printf("  Node: %s\n", nodeName)
diff --git a/pkg/cmd/helpers/k8s.go b/pkg/cmd/helpers/k8s.go
index cc6907c5..f371b865 100644
--- a/pkg/cmd/helpers/k8s.go
+++ b/pkg/cmd/helpers/k8s.go
@@ -5,6 +5,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/client-go/tools/clientcmd/api"
 	"k8s.io/client-go/util/homedir"
 	"path/filepath"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -23,6 +24,15 @@ func GetKubeConfigPath() string {
 	}
 }
 
+func LoadKubeConfig() (*api.Config, error) {
+	config, err := clientcmd.LoadFromFile(GetKubeConfigPath())
+	if err != nil {
+		return nil, fmt.Errorf("Failed to load kubeconfig file: %w", err)
+	} else {
+		return config, nil
+	}
+}
+
 func GetKubeConfig() (*rest.Config, error) {
 	kubeConfig, err := clientcmd.BuildConfigFromFlags("", GetKubeConfigPath())
 	if err != nil {