节点自动升级功能之前的版本

EdgeHttpDNS/internal/apps/app_cmd.go

@@ -94,7 +94,11 @@ func (a *AppCmd) runStart() {
 		return
 	}
 
-	cmd := exec.Command(os.Args[0])
+	exe, _ := os.Executable()
+	if len(exe) == 0 {
+		exe = os.Args[0]
+	}
+	cmd := exec.Command(exe)
 	cmd.Env = append(os.Environ(), "EdgeBackground=on")
 	err := cmd.Start()
 	if err != nil {

EdgeHttpDNS/internal/nodes/httpdns_node.go

@@ -16,6 +16,9 @@ import (
 	"github.com/iwind/gosock/pkg/gosock"
 )
 
+var DaemonIsOn = false
+var DaemonPid = 0
+
 type HTTPDNSNode struct {
 	sock *gosock.Sock
 
@@ -31,6 +34,12 @@ func NewHTTPDNSNode() *HTTPDNSNode {
 }
 
 func (n *HTTPDNSNode) Run() {
+	_, ok := os.LookupEnv("EdgeDaemon")
+	if ok {
+		DaemonIsOn = true
+		DaemonPid = os.Getppid()
+	}
+
 	err := n.listenSock()
 	if err != nil {
 		log.Println("[HTTPDNS_NODE]" + err.Error())
@@ -54,7 +63,7 @@ func (n *HTTPDNSNode) Daemon() {
 			}
 
 			cmd := exec.Command(exe)
-			cmd.Env = append(os.Environ(), "EdgeBackground=on")
+			cmd.Env = append(os.Environ(), "EdgeBackground=on", "EdgeDaemon=on")
 			if runtime.GOOS != "windows" {
 				cmd.Stdout = os.Stdout
 				cmd.Stderr = os.Stderr
@@ -147,6 +156,8 @@ func (n *HTTPDNSNode) start() {
 	go statusManager.Start()
 	go taskManager.Start()
 	go resolveServer.Start()
+
+	go NewUpgradeManager().Loop()
 }
 
 func (n *HTTPDNSNode) stop() {

EdgeHttpDNS/internal/nodes/upgrade_manager.go

@@ -0,0 +1,280 @@
+package nodes
+
+import (
+	"crypto/md5"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"time"
+
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	teaconst "github.com/TeaOSLab/EdgeHttpDNS/internal/const"
+	"github.com/TeaOSLab/EdgeHttpDNS/internal/rpc"
+	"github.com/TeaOSLab/EdgeHttpDNS/internal/utils"
+	"github.com/iwind/TeaGo/Tea"
+	stringutil "github.com/iwind/TeaGo/utils/string"
+	"github.com/iwind/gosock/pkg/gosock"
+)
+
+// UpgradeManager 节点升级管理器
+type UpgradeManager struct {
+	isInstalling bool
+	lastFile     string
+	exe          string
+}
+
+// NewUpgradeManager 获取新对象
+func NewUpgradeManager() *UpgradeManager {
+	return &UpgradeManager{}
+}
+
+// Loop 启动升级检查循环（每1分钟）
+func (this *UpgradeManager) Loop() {
+	rpcClient, err := rpc.SharedRPC()
+	if err != nil {
+		log.Println("[UPGRADE_MANAGER]" + err.Error())
+		return
+	}
+
+	var ticker = time.NewTicker(1 * time.Minute)
+	for range ticker.C {
+		resp, err := rpcClient.HTTPDNSNodeRPC.CheckHTTPDNSNodeLatestVersion(rpcClient.Context(), &pb.CheckHTTPDNSNodeLatestVersionRequest{
+			Os:             runtime.GOOS,
+			Arch:           runtime.GOARCH,
+			CurrentVersion: teaconst.Version,
+		})
+		if err != nil {
+			log.Println("[UPGRADE_MANAGER]check version failed: " + err.Error())
+			continue
+		}
+		if resp.HasNewVersion {
+			this.Start()
+		}
+	}
+}
+
+// Start 启动升级
+func (this *UpgradeManager) Start() {
+	// 必须放在文件解压之前读取可执行文件路径，防止解压之后，当前的可执行文件路径发生改变
+	exe, err := os.Executable()
+	if err != nil {
+		log.Println("[UPGRADE_MANAGER]can not find current executable file name")
+		return
+	}
+	this.exe = exe
+
+	// 测试环境下不更新
+	if Tea.IsTesting() {
+		return
+	}
+
+	if this.isInstalling {
+		return
+	}
+	this.isInstalling = true
+
+	// 还原安装状态
+	defer func() {
+		this.isInstalling = false
+	}()
+
+	log.Println("[UPGRADE_MANAGER]upgrading httpdns node ...")
+	err = this.install()
+	if err != nil {
+		log.Println("[UPGRADE_MANAGER]download failed: " + err.Error())
+		return
+	}
+
+	log.Println("[UPGRADE_MANAGER]upgrade successfully")
+
+	go func() {
+		err = this.restart()
+		if err != nil {
+			log.Println("[UPGRADE_MANAGER]" + err.Error())
+		}
+	}()
+}
+
+func (this *UpgradeManager) install() error {
+	// 检查是否有已下载但未安装成功的
+	if len(this.lastFile) > 0 {
+		_, err := os.Stat(this.lastFile)
+		if err == nil {
+			err = this.unzip(this.lastFile)
+			if err != nil {
+				return err
+			}
+			this.lastFile = ""
+			return nil
+		}
+	}
+
+	// 创建临时文件
+	dir := Tea.Root + "/tmp"
+	_, err := os.Stat(dir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = os.Mkdir(dir, 0777)
+			if err != nil {
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+
+	log.Println("[UPGRADE_MANAGER]downloading new node ...")
+
+	path := dir + "/" + teaconst.ProcessName + ".tmp"
+	fp, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0777)
+	if err != nil {
+		return err
+	}
+	isClosed := false
+	defer func() {
+		if !isClosed {
+			_ = fp.Close()
+		}
+	}()
+
+	client, err := rpc.SharedRPC()
+	if err != nil {
+		return err
+	}
+
+	var offset int64
+	var h = md5.New()
+	var sum = ""
+	var filename = ""
+	for {
+		resp, err := client.HTTPDNSNodeRPC.DownloadHTTPDNSNodeInstallationFile(client.Context(), &pb.DownloadHTTPDNSNodeInstallationFileRequest{
+			Os:          runtime.GOOS,
+			Arch:        runtime.GOARCH,
+			ChunkOffset: offset,
+		})
+		if err != nil {
+			return err
+		}
+		if len(resp.Sum) == 0 {
+			return nil
+		}
+		sum = resp.Sum
+		filename = resp.Filename
+		if stringutil.VersionCompare(resp.Version, teaconst.Version) <= 0 {
+			return nil
+		}
+		if len(resp.ChunkData) == 0 {
+			break
+		}
+
+		// 写入文件
+		_, err = fp.Write(resp.ChunkData)
+		if err != nil {
+			return err
+		}
+		_, err = h.Write(resp.ChunkData)
+		if err != nil {
+			return err
+		}
+
+		offset = resp.Offset
+	}
+
+	if len(filename) == 0 {
+		return nil
+	}
+
+	isClosed = true
+	err = fp.Close()
+	if err != nil {
+		return err
+	}
+
+	if fmt.Sprintf("%x", h.Sum(nil)) != sum {
+		_ = os.Remove(path)
+		return nil
+	}
+
+	// 改成zip
+	zipPath := dir + "/" + filename
+	err = os.Rename(path, zipPath)
+	if err != nil {
+		return err
+	}
+	this.lastFile = zipPath
+
+	// 解压
+	err = this.unzip(zipPath)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// 解压
+func (this *UpgradeManager) unzip(zipPath string) error {
+	var isOk = false
+	defer func() {
+		if isOk {
+			// 只有解压并覆盖成功后才会删除
+			_ = os.Remove(zipPath)
+		}
+	}()
+
+	// 解压
+	var target = Tea.Root
+	if Tea.IsTesting() {
+		// 测试环境下只解压在tmp目录
+		target = Tea.Root + "/tmp"
+	}
+
+	// 先改先前的可执行文件
+	err := os.Rename(target+"/bin/"+teaconst.ProcessName, target+"/bin/."+teaconst.ProcessName+".dist")
+	hasBackup := err == nil
+	defer func() {
+		if !isOk && hasBackup {
+			// 失败时还原
+			_ = os.Rename(target+"/bin/."+teaconst.ProcessName+".dist", target+"/bin/"+teaconst.ProcessName)
+		}
+	}()
+
+	unzip := utils.NewUnzip(zipPath, target, teaconst.ProcessName+"/")
+	err = unzip.Run()
+	if err != nil {
+		return err
+	}
+
+	isOk = true
+
+	return nil
+}
+
+// 重启
+func (this *UpgradeManager) restart() error {
+	// 关闭当前sock，防止无法重启
+	_ = gosock.NewTmpSock(teaconst.ProcessName).Close()
+
+	// 重新启动
+	if DaemonIsOn && DaemonPid == os.Getppid() {
+		os.Exit(0)
+	} else {
+		// 启动
+		var exe = filepath.Dir(this.exe) + "/" + teaconst.ProcessName
+
+		log.Println("[UPGRADE_MANAGER]restarting ...", exe)
+		cmd := exec.Command(exe, "start")
+		err := cmd.Start()
+		if err != nil {
+			return err
+		}
+
+		// 退出当前进程
+		time.Sleep(1 * time.Second)
+		os.Exit(0)
+	}
+	return nil
+}

EdgeHttpDNS/internal/utils/unzip.go

@@ -0,0 +1,98 @@
+package utils
+
+import (
+	"archive/zip"
+	"errors"
+	"io"
+	"os"
+	"strings"
+)
+
+type Unzip struct {
+	zipFile     string
+	targetDir   string
+	stripPrefix string
+}
+
+func NewUnzip(zipFile string, targetDir string, stripPrefix string) *Unzip {
+	return &Unzip{
+		zipFile:     zipFile,
+		targetDir:   targetDir,
+		stripPrefix: stripPrefix,
+	}
+}
+
+func (this *Unzip) Run() error {
+	if len(this.zipFile) == 0 {
+		return errors.New("zip file should not be empty")
+	}
+	if len(this.targetDir) == 0 {
+		return errors.New("target dir should not be empty")
+	}
+
+	reader, err := zip.OpenReader(this.zipFile)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		_ = reader.Close()
+	}()
+
+	for _, file := range reader.File {
+		info := file.FileInfo()
+		filename := file.Name
+		if len(this.stripPrefix) > 0 {
+			filename = strings.TrimPrefix(filename, this.stripPrefix)
+		}
+		target := this.targetDir + "/" + filename
+
+		// 目录
+		if info.IsDir() {
+			stat, err := os.Stat(target)
+			if err != nil {
+				if !os.IsNotExist(err) {
+					return err
+				} else {
+					err = os.MkdirAll(target, info.Mode())
+					if err != nil {
+						return err
+					}
+				}
+			} else if !stat.IsDir() {
+				err = os.MkdirAll(target, info.Mode())
+				if err != nil {
+					return err
+				}
+			}
+			continue
+		}
+
+		// 文件
+		err := func(file *zip.File, target string) error {
+			fileReader, err := file.Open()
+			if err != nil {
+				return err
+			}
+			defer func() {
+				_ = fileReader.Close()
+			}()
+
+			fileWriter, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, file.FileInfo().Mode())
+			if err != nil {
+				return err
+			}
+			defer func() {
+				_ = fileWriter.Close()
+			}()
+
+			_, err = io.Copy(fileWriter, fileReader)
+			return err
+		}(file, target)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}