refactor: change temp kubeconfig to ~/.kubevpn/tmp

pkg/config/const.go

@@ -21,6 +21,8 @@ const (
 	LogFile = "daemon.log"
 
 	ConfigFile = "config.yaml"
+
+	TmpDir = "tmp"
 )
 
 //go:embed config.yaml
@@ -51,6 +53,14 @@ func init() {
 	if err != nil {
 		panic(err)
 	}
+	err = os.MkdirAll(GetTempPath(), 0755)
+	if err != nil {
+		panic(err)
+	}
+	err = os.Chmod(GetTempPath(), 0755)
+	if err != nil {
+		panic(err)
+	}
 
 	path := filepath.Join(HomePath, ConfigFile)
 	_, err = os.Stat(path)
@@ -85,3 +95,7 @@ func GetSyncthingPath() string {
 func GetConfigFilePath() string {
 	return filepath.Join(HomePath, ConfigFile)
 }
+
+func GetTempPath() string {
+	return filepath.Join(HomePath, TmpDir)
+}

pkg/ssh/ssh.go

@@ -333,9 +333,9 @@ func SshJump(ctx context.Context, conf *SshConfig, flags *pflag.FlagSet, print b
 		return
 	}
 	if print {
-		plog.G(ctx).Infof("Use temporary kubeconfig: %s", path)
+		plog.G(ctx).Infof("Use temp kubeconfig: %s", path)
 	} else {
-		plog.G(ctx).Debugf("Use temporary kubeconfig: %s", path)
+		plog.G(ctx).Debugf("Use temp kubeconfig: %s", path)
 	}
 	return
 }

pkg/util/ns.go

@@ -3,6 +3,7 @@ package util
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net"
 	"net/url"
 	"os"
@@ -128,7 +129,12 @@ func GetAPIServerFromKubeConfigBytes(kubeconfigBytes []byte) *net.IPNet {
 }
 
 func ConvertToTempKubeconfigFile(kubeconfigBytes []byte) (string, error) {
-	temp, err := os.CreateTemp("", "*.kubeconfig")
+	pattern := "*.kubeconfig"
+	cluster, ns, _ := GetCluster(kubeconfigBytes)
+	if cluster != "" {
+		pattern = fmt.Sprintf("%s_%s_%s", cluster, ns, pattern)
+	}
+	temp, err := os.CreateTemp(config.GetTempPath(), pattern)
 	if err != nil {
 		return "", err
 	}
@@ -147,6 +153,32 @@ func ConvertToTempKubeconfigFile(kubeconfigBytes []byte) (string, error) {
 	return temp.Name(), nil
 }
 
+func GetCluster(kubeConfigBytes []byte) (cluster string, ns string, err error) {
+	var clientConfig clientcmd.ClientConfig
+	clientConfig, err = clientcmd.NewClientConfigFromBytes(kubeConfigBytes)
+	if err != nil {
+		return
+	}
+	var rawConfig api.Config
+	rawConfig, err = clientConfig.RawConfig()
+	if err != nil {
+		return
+	}
+	if err = api.FlattenConfig(&rawConfig); err != nil {
+		return
+	}
+	if rawConfig.Contexts == nil {
+		return
+	}
+	kubeContext := rawConfig.Contexts[rawConfig.CurrentContext]
+	if kubeContext == nil {
+		return
+	}
+	cluster = kubeContext.Cluster
+	ns = kubeContext.Namespace
+	return
+}
+
 func InitFactory(kubeconfigBytes string, ns string) cmdutil.Factory {
 	configFlags := genericclioptions.NewConfigFlags(true)
 	configFlags.WrapConfigFn = func(c *rest.Config) *rest.Config {