feat: optimize code

pkg/dev/convert.go

@@ -3,6 +3,9 @@ package dev
 import (
 	"context"
 	"fmt"
+	"math/rand"
+	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"unsafe"
@@ -14,12 +17,18 @@ import (
 	"github.com/docker/go-connections/nat"
 	"github.com/google/uuid"
 	miekgdns "github.com/miekg/dns"
+	"github.com/moby/term"
 	v12 "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/spf13/cobra"
 	"k8s.io/api/core/v1"
 	v13 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
 	"k8s.io/kubectl/pkg/cmd/util"
 
+	"github.com/wencaiwulue/kubevpn/pkg/config"
+	"github.com/wencaiwulue/kubevpn/pkg/cp"
 	"github.com/wencaiwulue/kubevpn/pkg/dns"
+	"github.com/wencaiwulue/kubevpn/pkg/handler"
 )
 
 type RunConfig struct {
@@ -143,7 +152,7 @@ func ConvertKubeResourceToContainer(namespace string, temp v1.PodTemplateSpec, e
 		r.k8sContainerName = c.Name
 		r.config = config
 		r.hostConfig = hostConfig
-		r.networkingConfig = nil
+		r.networkingConfig = &network.NetworkingConfig{EndpointsConfig: make(map[string]*network.EndpointSettings)}
 		r.platform = /*&v12.Platform{Architecture: "amd64", OS: "linux"}*/ nil
 
 		runConfigList = append(runConfigList, &r)
@@ -176,3 +185,63 @@ func GetDNS(ctx context.Context, f util.Factory, ns, pod string) (*miekgdns.Clie
 	}
 	return fromPod, nil
 }
+
+// GetVolume key format: [container name]-[volume mount name]
+func GetVolume(ctx context.Context, f util.Factory, ns, pod string) (map[string][]mount.Mount, error) {
+	clientSet, err := f.KubernetesClientSet()
+	if err != nil {
+		return nil, err
+	}
+	var get *v1.Pod
+	get, err = clientSet.CoreV1().Pods(ns).Get(ctx, pod, v13.GetOptions{})
+	if err != nil {
+		return nil, err
+	}
+	result := map[string][]mount.Mount{}
+	for _, c := range get.Spec.Containers {
+		// if container name is vpn or envoy-proxy, not need to download volume
+		if c.Name == config.ContainerSidecarVPN || c.Name == config.ContainerSidecarEnvoyProxy {
+			continue
+		}
+		var m []mount.Mount
+		for _, volumeMount := range c.VolumeMounts {
+			if volumeMount.MountPath == "/tmp" {
+				continue
+			}
+			join := filepath.Join(os.TempDir(), strconv.Itoa(rand.Int()))
+			err = os.MkdirAll(join, 0755)
+			if err != nil {
+				return nil, err
+			}
+			if volumeMount.SubPath != "" {
+				join = filepath.Join(join, volumeMount.SubPath)
+			}
+			handler.RollbackFuncList = append(handler.RollbackFuncList, func() {
+				_ = os.RemoveAll(join)
+			})
+			// pod-namespace/pod-name:path
+			remotePath := fmt.Sprintf("%s/%s:%s", ns, pod, volumeMount.MountPath)
+			stdIn, stdOut, stdErr := term.StdStreams()
+			copyOptions := cp.NewCopyOptions(genericclioptions.IOStreams{In: stdIn, Out: stdOut, ErrOut: stdErr})
+			copyOptions.Container = c.Name
+			copyOptions.MaxTries = 10
+			err = copyOptions.Complete(f, &cobra.Command{}, []string{remotePath, join})
+			if err != nil {
+				return nil, err
+			}
+			err = copyOptions.Run()
+			if err != nil {
+				_, _ = fmt.Fprintf(os.Stderr, "failed to download volume %s path %s to %s, err: %v, ignore...\n", volumeMount.Name, remotePath, join, err)
+				continue
+			}
+			m = append(m, mount.Mount{
+				Type:   mount.TypeBind,
+				Source: join,
+				Target: volumeMount.MountPath,
+			})
+			fmt.Printf("%s:%s\n", join, volumeMount.MountPath)
+		}
+		result[c.Name] = m
+	}
+	return result, nil
+}