/
upgrade_manager.go
269 lines (230 loc) · 5.38 KB
/
upgrade_manager.go
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// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
package nodes
import (
"crypto/md5"
"fmt"
"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
"github.com/TeaOSLab/EdgeNode/internal/events"
"github.com/TeaOSLab/EdgeNode/internal/goman"
"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
"github.com/TeaOSLab/EdgeNode/internal/rpc"
"github.com/TeaOSLab/EdgeNode/internal/utils"
executils "github.com/TeaOSLab/EdgeNode/internal/utils/exec"
"github.com/iwind/TeaGo/Tea"
stringutil "github.com/iwind/TeaGo/utils/string"
"github.com/iwind/gosock/pkg/gosock"
"os"
"path/filepath"
"runtime"
"time"
)
var sharedUpgradeManager = NewUpgradeManager()
// UpgradeManager 节点升级管理器
// TODO 需要在集群中设置是否自动更新
type UpgradeManager struct {
isInstalling bool
lastFile string
exe string
}
// NewUpgradeManager 获取新对象
func NewUpgradeManager() *UpgradeManager {
return &UpgradeManager{}
}
// 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,防止解析之后,当前的可执行文件路径发生改变
exe, err := os.Executable()
if err != nil {
remotelogs.Error("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
remotelogs.Println("UPGRADE_MANAGER", "upgrading node ...")
err = this.install()
if err != nil {
remotelogs.Error("UPGRADE_MANAGER", "download failed: "+err.Error())
this.isInstalling = false
return
}
remotelogs.Println("UPGRADE_MANAGER", "upgrade successfully")
goman.New(func() {
err = this.restart()
if err != nil {
remotelogs.Error("UPGRADE_MANAGER", err.Error())
}
this.isInstalling = false
})
}
// IsInstalling 检查是否正在安装
func (this *UpgradeManager) IsInstalling() bool {
return this.isInstalling
}
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
var 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
}
}
remotelogs.Println("UPGRADE_MANAGER", "downloading new node ...")
var path = dir + "/edge-node.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.NodeRPC.DownloadNodeInstallationFile(client.Context(), &pb.DownloadNodeInstallationFileRequest{
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")
var hasBackup = err == nil
defer func() {
if !isOk && hasBackup {
// 失败时还原
_ = os.Rename(target+"/bin/."+teaconst.ProcessName+".dist", target+"/bin/"+teaconst.ProcessName)
}
}()
var unzip = utils.NewUnzip(zipPath, target, "edge-node/")
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() {
utils.Exit() // TODO 试着更优雅重启
} else {
// quit
events.Notify(events.EventQuit)
// terminated
events.Notify(events.EventTerminated)
// 启动
var exe = filepath.Dir(this.exe) + "/" + teaconst.ProcessName
var cmd = executils.NewCmd(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
}