集群可以设置systemd系统服务

internal/const/const.go

@@ -10,4 +10,7 @@ const (
 
 	EncryptKey    = "8f983f4d69b83aaa0d74b21a212f6967"
 	EncryptMethod = "aes-256-cfb"
+
+	// systemd
+	SystemdServiceName = "edge-node"
 )

internal/nodes/api_stream.go

@@ -7,13 +7,16 @@ import (
 	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
 	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
 	"github.com/TeaOSLab/EdgeNode/internal/caches"
+	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
 	"github.com/TeaOSLab/EdgeNode/internal/errors"
 	"github.com/TeaOSLab/EdgeNode/internal/events"
 	"github.com/TeaOSLab/EdgeNode/internal/iplibrary"
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	"github.com/TeaOSLab/EdgeNode/internal/rpc"
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"io"
 	"net/http"
+	"os/exec"
 	"strconv"
 	"strings"
 	"sync"
@@ -98,6 +101,8 @@ func (this *APIStream) loop() error {
 			err = this.handleConfigChanged(message)
 		case messageconfigs.MessageCodeIPListChanged: // IPList变化
 			err = this.handleIPListChanged(message)
+		case messageconfigs.MessageCodeCheckSystemdService: // 检查Systemd服务
+			err = this.handleCheckSystemdService(message)
 		default:
 			err = this.handleUnknownMessage(message)
 		}
@@ -373,6 +378,7 @@ func (this *APIStream) handlePreheatCache(message *pb.NodeStreamMessage) error {
 			}()
 
 			// 检查最大内容长度
+			// TODO 需要解决Chunked Transfer Encoding的长度判断问题
 			maxSize := storage.Policy().MaxSizeBytes()
 			if maxSize > 0 && resp.ContentLength > maxSize {
 				locker.Lock()
@@ -461,6 +467,34 @@ func (this *APIStream) handleIPListChanged(message *pb.NodeStreamMessage) error
 	return nil
 }
 
+// 检查Systemd服务
+func (this *APIStream) handleCheckSystemdService(message *pb.NodeStreamMessage) error {
+	systemctl, err := exec.LookPath("systemctl")
+	if err != nil {
+		this.replyFail(message.RequestId, "'systemctl' not found")
+		return nil
+	}
+	if len(systemctl) == 0 {
+		this.replyFail(message.RequestId, "'systemctl' not found")
+		return nil
+	}
+
+	cmd := utils.NewCommandExecutor()
+	shortName := teaconst.SystemdServiceName
+	cmd.Add(systemctl, "is-enabled", shortName)
+	output, err := cmd.Run()
+	if err != nil {
+		this.replyFail(message.RequestId, "'systemctl' command error: " + err.Error())
+		return nil
+	}
+	if output == "enabled" {
+		this.replyOk(message.RequestId, "ok")
+	} else {
+		this.replyFail(message.RequestId, "not installed")
+	}
+	return nil
+}
+
 // 处理未知消息
 func (this *APIStream) handleUnknownMessage(message *pb.NodeStreamMessage) error {
 	this.replyFail(message.RequestId, "unknown message code '"+message.Code+"'")

internal/nodes/node.go

@@ -16,7 +16,7 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"github.com/go-yaml/yaml"
 	"github.com/iwind/TeaGo/Tea"
-	tealogs "github.com/iwind/TeaGo/logs"
+	"github.com/iwind/TeaGo/logs"
 	"io/ioutil"
 	"net"
 	"os"
@@ -69,10 +69,24 @@ func (this *Node) Start() {
 	}
 
 	// 读取API配置
-	err = this.syncConfig(false)
+	tryTimes := 0
-	if err != nil {
+	for {
-		remotelogs.Error("NODE", err.Error())
+		err = this.syncConfig(false)
-		return
+		if err != nil {
+			tryTimes++
+
+			if tryTimes%10 == 0 {
+				remotelogs.Error("NODE", err.Error())
+			}
+			time.Sleep(1 * time.Second)
+
+			// 不做长时间的无意义的重试
+			if tryTimes > 1000 {
+				return
+			}
+		} else {
+			break
+		}
 	}
 
 	// 启动同步计时器
@@ -292,12 +306,12 @@ func (this *Node) checkClusterConfig() error {
 		return err
 	}
 
-	tealogs.Println("[NODE]registering node ...")
+	logs.Println("[NODE]registering node ...")
 	resp, err := rpcClient.NodeRPC().RegisterClusterNode(rpcClient.ClusterContext(config.ClusterId, config.Secret), &pb.RegisterClusterNodeRequest{Name: HOSTNAME})
 	if err != nil {
 		return err
 	}
-	tealogs.Println("[NODE]registered successfully")
+	logs.Println("[NODE]registered successfully")
 
 	// 写入到配置文件中
 	if len(resp.Endpoints) == 0 {
@@ -312,12 +326,12 @@ func (this *Node) checkClusterConfig() error {
 		NodeId: resp.UniqueId,
 		Secret: resp.Secret,
 	}
-	tealogs.Println("[NODE]writing 'configs/api.yaml' ...")
+	logs.Println("[NODE]writing 'configs/api.yaml' ...")
 	err = apiConfig.WriteFile(Tea.ConfigFile("api.yaml"))
 	if err != nil {
 		return err
 	}
-	tealogs.Println("[NODE]wrote 'configs/api.yaml' successfully")
+	logs.Println("[NODE]wrote 'configs/api.yaml' successfully")
 
 	return nil
 }

internal/nodes/system_services.go

@@ -0,0 +1,118 @@
+package nodes
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"github.com/TeaOSLab/EdgeCommon/pkg/nodeconfigs"
+	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
+	"github.com/TeaOSLab/EdgeNode/internal/events"
+	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"github.com/iwind/TeaGo/maps"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"runtime"
+)
+
+func init() {
+	var manager = NewSystemServiceManager()
+	events.On(events.EventReload, func() {
+		err := manager.Setup()
+		if err != nil {
+			remotelogs.Error("SYSTEM_SERVICE", "setup system services failed: "+err.Error())
+		}
+	})
+}
+
+// 系统服务管理
+type SystemServiceManager struct {
+}
+
+func NewSystemServiceManager() *SystemServiceManager {
+	return &SystemServiceManager{}
+}
+
+func (this *SystemServiceManager) Setup() error {
+	if sharedNodeConfig == nil || !sharedNodeConfig.IsOn {
+		return nil
+	}
+
+	if len(sharedNodeConfig.SystemServices) == 0 {
+		return nil
+	}
+
+	systemdParams, ok := sharedNodeConfig.SystemServices[nodeconfigs.SystemServiceTypeSystemd]
+	if ok {
+		err := this.setupSystemd(systemdParams)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (this *SystemServiceManager) setupSystemd(params maps.Map) error {
+	// 只有在Linux下运行
+	if runtime.GOOS != "linux" {
+		return nil
+	}
+
+	if params == nil {
+		params = maps.Map{}
+	}
+	data, err := json.Marshal(params)
+	if err != nil {
+		return err
+	}
+	config := &nodeconfigs.SystemdServiceConfig{}
+	err = json.Unmarshal(data, config)
+	if err != nil {
+		return err
+	}
+
+	// 检查当前的service
+	systemctl, err := exec.LookPath("systemctl")
+	if err != nil {
+		return err
+	}
+	if len(systemctl) == 0 {
+		return errors.New("can not find 'systemctl' on the system")
+	}
+	cmd := utils.NewCommandExecutor()
+	shortName := teaconst.SystemdServiceName
+	cmd.Add(systemctl, "is-enabled", shortName)
+	output, err := cmd.Run()
+	if err != nil {
+		return err
+	}
+	if config.IsOn {
+		exe, err := os.Executable()
+		if err != nil {
+			return err
+		}
+
+		if output == "enabled" {
+			// 检查文件路径是否变化
+			data, err := ioutil.ReadFile("/etc/systemd/system/" + teaconst.SystemdServiceName + ".service")
+			if err == nil && bytes.Index(data, []byte(exe)) > 0 {
+				return nil
+			}
+		}
+		manager := utils.NewServiceManager(shortName, teaconst.ProductName)
+		err = manager.Install(exe, []string{})
+		if err != nil {
+			return err
+		}
+	} else {
+		manager := utils.NewServiceManager(shortName, teaconst.ProductName)
+		err = manager.Uninstall()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

internal/utils/command.go

@@ -0,0 +1,7 @@
+package utils
+
+// 命令定义
+type Command struct {
+	Name string
+	Args []string
+}

internal/utils/command_executor.go

@@ -0,0 +1,61 @@
+package utils
+
+import (
+	"bytes"
+	"errors"
+	"os/exec"
+)
+
+// 命令执行器
+type CommandExecutor struct {
+	commands []*Command
+}
+
+// 获取新对象
+func NewCommandExecutor() *CommandExecutor {
+	return &CommandExecutor{}
+}
+
+// 添加命令
+func (this *CommandExecutor) Add(command string, arg ...string) {
+	this.commands = append(this.commands, &Command{
+		Name: command,
+		Args: arg,
+	})
+}
+
+// 执行命令
+func (this *CommandExecutor) Run() (output string, err error) {
+	if len(this.commands) == 0 {
+		return "", errors.New("no commands no run")
+	}
+	var lastCmd *exec.Cmd = nil
+	var lastData []byte = nil
+	for _, command := range this.commands {
+		cmd := exec.Command(command.Name, command.Args...)
+		stdout := bytes.NewBuffer([]byte{})
+		cmd.Stdout = stdout
+		if lastCmd != nil {
+			cmd.Stdin = bytes.NewBuffer(lastData)
+		}
+		err = cmd.Start()
+		if err != nil {
+			return "", err
+		}
+
+		err = cmd.Wait()
+		if err != nil {
+			_, ok := err.(*exec.ExitError)
+			if ok {
+				return "", nil
+			}
+
+			return "", err
+		}
+		lastData = stdout.Bytes()
+
+		lastCmd = cmd
+	}
+
+	return string(bytes.TrimSpace(lastData)), nil
+}

internal/utils/service.go

@@ -0,0 +1,111 @@
+package utils
+
+import (
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/files"
+	"github.com/iwind/TeaGo/logs"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sync"
+)
+
+// 服务管理器
+type ServiceManager struct {
+	Name        string
+	Description string
+
+	fp         *os.File
+	logger     *log.Logger
+	onceLocker sync.Once
+}
+
+// 获取对象
+func NewServiceManager(name, description string) *ServiceManager {
+	manager := &ServiceManager{
+		Name:        name,
+		Description: description,
+	}
+
+	// root
+	manager.resetRoot()
+
+	return manager
+}
+
+// 设置服务
+func (this *ServiceManager) setup() {
+	this.onceLocker.Do(func() {
+		logFile := files.NewFile(Tea.Root + "/logs/service.log")
+		if logFile.Exists() {
+			logFile.Delete()
+		}
+
+		//logger
+		fp, err := os.OpenFile(Tea.Root+"/logs/service.log", os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
+		if err != nil {
+			logs.Error(err)
+			return
+		}
+		this.fp = fp
+		this.logger = log.New(fp, "", log.LstdFlags)
+	})
+}
+
+//记录普通日志
+func (this *ServiceManager) Log(msg string) {
+	this.setup()
+	if this.logger == nil {
+		return
+	}
+	this.logger.Println("[info]" + msg)
+}
+
+// 记录错误日志
+func (this *ServiceManager) LogError(msg string) {
+	this.setup()
+	if this.logger == nil {
+		return
+	}
+	this.logger.Println("[error]" + msg)
+}
+
+// 关闭
+func (this *ServiceManager) Close() error {
+	if this.fp != nil {
+		return this.fp.Close()
+	}
+	return nil
+}
+
+// 重置Root
+func (this *ServiceManager) resetRoot() {
+	if !Tea.IsTesting() {
+		exePath, err := os.Executable()
+		if err != nil {
+			exePath = os.Args[0]
+		}
+		link, err := filepath.EvalSymlinks(exePath)
+		if err == nil {
+			exePath = link
+		}
+		fullPath, err := filepath.Abs(exePath)
+		if err == nil {
+			Tea.UpdateRoot(filepath.Dir(filepath.Dir(fullPath)))
+		}
+	}
+	Tea.SetPublicDir(Tea.Root + Tea.DS + "web" + Tea.DS + "public")
+	Tea.SetViewsDir(Tea.Root + Tea.DS + "web" + Tea.DS + "views")
+	Tea.SetTmpDir(Tea.Root + Tea.DS + "web" + Tea.DS + "tmp")
+}
+
+// 保持命令行窗口是打开的
+func (this *ServiceManager) PauseWindow() {
+	if runtime.GOOS != "windows" {
+		return
+	}
+
+	b := make([]byte, 1)
+	_, _ = os.Stdin.Read(b)
+}

internal/utils/service_linux.go

@@ -0,0 +1,151 @@
+// +build linux
+
+package utils
+
+import (
+	"errors"
+	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/files"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"regexp"
+)
+
+var systemdServiceFile = "/etc/systemd/system/edge-node.service"
+var initServiceFile = "/etc/init.d/" + teaconst.SystemdServiceName
+
+// 安装服务
+func (this *ServiceManager) Install(exePath string, args []string) error {
+	if os.Getgid() != 0 {
+		return errors.New("only root users can install the service")
+	}
+
+	systemd, err := exec.LookPath("systemctl")
+	if err != nil {
+		return this.installInitService(exePath, args)
+	}
+
+	return this.installSystemdService(systemd, exePath, args)
+}
+
+// 启动服务
+func (this *ServiceManager) Start() error {
+	if os.Getgid() != 0 {
+		return errors.New("only root users can start the service")
+	}
+
+	if files.NewFile(systemdServiceFile).Exists() {
+		systemd, err := exec.LookPath("systemctl")
+		if err != nil {
+			return err
+		}
+
+		return exec.Command(systemd, "start", teaconst.SystemdServiceName+".service").Start()
+	}
+	return exec.Command("service", teaconst.ProcessName, "start").Start()
+}
+
+// 删除服务
+func (this *ServiceManager) Uninstall() error {
+	if os.Getgid() != 0 {
+		return errors.New("only root users can uninstall the service")
+	}
+
+	if files.NewFile(systemdServiceFile).Exists() {
+		systemd, err := exec.LookPath("systemctl")
+		if err != nil {
+			return err
+		}
+
+		// disable service
+		exec.Command(systemd, "disable", teaconst.SystemdServiceName+".service").Start()
+
+		// reload
+		exec.Command(systemd, "daemon-reload")
+
+		return files.NewFile(systemdServiceFile).Delete()
+	}
+
+	f := files.NewFile(initServiceFile)
+	if f.Exists() {
+		return f.Delete()
+	}
+	return nil
+}
+
+// install init service
+func (this *ServiceManager) installInitService(exePath string, args []string) error {
+	shortName := teaconst.SystemdServiceName
+	scriptFile := Tea.Root + "/scripts/" + shortName
+	if !files.NewFile(scriptFile).Exists() {
+		return errors.New("'scripts/" + shortName + "' file not exists")
+	}
+
+	data, err := ioutil.ReadFile(scriptFile)
+	if err != nil {
+		return err
+	}
+
+	data = regexp.MustCompile("INSTALL_DIR=.+").ReplaceAll(data, []byte("INSTALL_DIR="+Tea.Root))
+	err = ioutil.WriteFile(initServiceFile, data, 0777)
+	if err != nil {
+		return err
+	}
+
+	chkCmd, err := exec.LookPath("chkconfig")
+	if err != nil {
+		return err
+	}
+
+	err = exec.Command(chkCmd, "--add", teaconst.ProcessName).Start()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// install systemd service
+func (this *ServiceManager) installSystemdService(systemd, exePath string, args []string) error {
+	shortName := teaconst.SystemdServiceName
+	longName := "GoEdge Node" // TODO 将来可以修改
+
+	desc := `# Provides:          ` + shortName + `
+# Required-Start:    $all
+# Required-Stop:
+# Default-Start:     2 3 4 5
+# Default-Stop:
+# Short-Description: ` + longName + ` Service
+### END INIT INFO
+
+[Unit]
+Description=` + longName + ` Service
+Before=shutdown.target
+
+[Service]
+Type=forking
+ExecStart=` + exePath + ` start
+ExecStop=` + exePath + ` stop
+ExecReload=` + exePath + ` reload
+
+[Install]
+WantedBy=multi-user.target`
+
+	// write file
+	err := ioutil.WriteFile(systemdServiceFile, []byte(desc), 0777)
+	if err != nil {
+		return err
+	}
+
+	// stop current systemd service if running
+	exec.Command(systemd, "stop", shortName+".service")
+
+	// reload
+	exec.Command(systemd, "daemon-reload")
+
+	// enable
+	cmd := exec.Command(systemd, "enable", shortName+".service")
+	return cmd.Run()
+}

internal/utils/service_others.go

@@ -0,0 +1,18 @@
+// +build !linux,!windows
+
+package utils
+
+// 安装服务
+func (this *ServiceManager) Install(exePath string, args []string) error {
+	return nil
+}
+
+// 启动服务
+func (this *ServiceManager) Start() error {
+	return nil
+}
+
+// 删除服务
+func (this *ServiceManager) Uninstall() error {
+	return nil
+}

internal/utils/service_test.go

@@ -0,0 +1,12 @@
+package utils
+
+import (
+	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
+	"testing"
+)
+
+func TestServiceManager_Log(t *testing.T) {
+	manager := NewServiceManager(teaconst.ProductName, teaconst.ProductName+" Server")
+	manager.Log("Hello, World")
+	manager.LogError("Hello, World")
+}

internal/utils/service_windows.go

@@ -0,0 +1,173 @@
+// +build windows
+
+package utils
+
+import (
+	"fmt"
+	"github.com/iwind/TeaGo/Tea"
+	"golang.org/x/sys/windows"
+	"golang.org/x/sys/windows/svc"
+	"golang.org/x/sys/windows/svc/mgr"
+	"os/exec"
+)
+
+// 安装服务
+func (this *ServiceManager) Install(exePath string, args []string) error {
+	m, err := mgr.Connect()
+	if err != nil {
+		return fmt.Errorf("connecting: %s please 'Run as administrator' again", err.Error())
+	}
+	defer m.Disconnect()
+	s, err := m.OpenService(this.Name)
+	if err == nil {
+		s.Close()
+		return fmt.Errorf("service %s already exists", this.Name)
+	}
+
+	s, err = m.CreateService(this.Name, exePath, mgr.Config{
+		DisplayName: this.Name,
+		Description: this.Description,
+		StartType:   windows.SERVICE_AUTO_START,
+	}, args...)
+	if err != nil {
+		return fmt.Errorf("creating: %s", err.Error())
+	}
+	defer s.Close()
+
+	return nil
+}
+
+// 启动服务
+func (this *ServiceManager) Start() error {
+	m, err := mgr.Connect()
+	if err != nil {
+		return err
+	}
+	defer m.Disconnect()
+	s, err := m.OpenService(this.Name)
+	if err != nil {
+		return fmt.Errorf("could not access service: %v", err)
+	}
+	defer s.Close()
+	err = s.Start("service")
+	if err != nil {
+		return fmt.Errorf("could not start service: %v", err)
+	}
+
+	return nil
+}
+
+// 删除服务
+func (this *ServiceManager) Uninstall() error {
+	m, err := mgr.Connect()
+	if err != nil {
+		return fmt.Errorf("connecting: %s please 'Run as administrator' again", err.Error())
+	}
+	defer m.Disconnect()
+	s, err := m.OpenService(this.Name)
+	if err != nil {
+		return fmt.Errorf("open service: %s", err.Error())
+	}
+
+	// shutdown service
+	_, err = s.Control(svc.Stop)
+	if err != nil {
+		fmt.Printf("shutdown service: %s\n", err.Error())
+	}
+
+	defer s.Close()
+	err = s.Delete()
+	if err != nil {
+		return fmt.Errorf("deleting: %s", err.Error())
+	}
+	return nil
+}
+
+// 运行
+func (this *ServiceManager) Run() {
+	err := svc.Run(this.Name, this)
+	if err != nil {
+		this.LogError(err.Error())
+	}
+}
+
+// 同服务管理器的交互
+func (this *ServiceManager) Execute(args []string, r <-chan svc.ChangeRequest, changes chan<- svc.Status) (ssec bool, errno uint32) {
+	const cmdsAccepted = svc.AcceptStop | svc.AcceptShutdown | svc.AcceptPauseAndContinue
+
+	changes <- svc.Status{
+		State: svc.StartPending,
+	}
+
+	changes <- svc.Status{
+		State:   svc.Running,
+		Accepts: cmdsAccepted,
+	}
+
+	// start service
+	this.Log("start")
+	this.cmdStart()
+
+loop:
+	for {
+		select {
+		case c := <-r:
+			switch c.Cmd {
+			case svc.Interrogate:
+				this.Log("cmd: Interrogate")
+				changes <- c.CurrentStatus
+			case svc.Stop, svc.Shutdown:
+				this.Log("cmd: Stop|Shutdown")
+
+				// stop service
+				this.cmdStop()
+
+				break loop
+			case svc.Pause:
+				this.Log("cmd: Pause")
+
+				// stop service
+				this.cmdStop()
+
+				changes <- svc.Status{
+					State:   svc.Paused,
+					Accepts: cmdsAccepted,
+				}
+			case svc.Continue:
+				this.Log("cmd: Continue")
+
+				// start service
+				this.cmdStart()
+
+				changes <- svc.Status{
+					State:   svc.Running,
+					Accepts: cmdsAccepted,
+				}
+			default:
+				this.LogError(fmt.Sprintf("unexpected control request #%d\r\n", c))
+			}
+		}
+	}
+	changes <- svc.Status{
+		State: svc.StopPending,
+	}
+	return
+}
+
+// 启动Web服务
+func (this *ServiceManager) cmdStart() {
+	cmd := exec.Command(Tea.Root+Tea.DS+"bin"+Tea.DS+teaconst.SystemdServiceName+".exe", "start")
+	err := cmd.Start()
+	if err != nil {
+		this.LogError(err.Error())
+	}
+}
+
+// 停止Web服务
+func (this *ServiceManager) cmdStop() {
+	cmd := exec.Command(Tea.Root+Tea.DS+"bin"+Tea.DS+teaconst.SystemdServiceName+".exe", "stop")
+	err := cmd.Start()
+	if err != nil {
+		this.LogError(err.Error())
+	}
+}