refactor: code rewiew&功能小优化

mayfly_go_web/package.json

@@ -13,7 +13,7 @@
     "countup.js": "^2.0.7",
     "cropperjs": "^1.5.11",
     "echarts": "^5.3.3",
-    "element-plus": "^2.2.12",
+    "element-plus": "^2.2.13",
     "jsencrypt": "^3.2.1",
     "jsoneditor": "^9.9.0",
     "lodash": "^4.17.21",

mayfly_go_web/src/store/interface/index.ts

@@ -52,6 +52,7 @@ export interface ThemeConfigState {
         terminalBackground: string;
         terminalCursor: string;
         terminalFontSize: number;
+        terminalFontWeight: string;
     };
 }
 

mayfly_go_web/src/store/modules/themeConfig.ts

@@ -113,6 +113,7 @@ const themeConfigModule: Module<ThemeConfigState, RootStateTypes> = {
             // ssh终端cursor色
             terminalCursor: '#f0cc09',
             terminalFontSize: 15,
+            terminalFontWeight: 'normal',
 
 
             /* 后端控制路由

mayfly_go_web/src/views/layout/navBars/breadcrumb/setings.vue

@@ -40,7 +40,7 @@
                         </el-input-number>
                     </div>
                 </div>
-                <!-- <div class="layout-breadcrumb-seting-bar-flex mt15">
+                <div class="layout-breadcrumb-seting-bar-flex mt15">
                     <div class="layout-breadcrumb-seting-bar-flex-label">字体粗细</div>
                     <div class="layout-breadcrumb-seting-bar-flex-value">
                         <el-select @change="setLocalThemeConfig" v-model="getThemeConfig.terminalFontWeight" size="small" style="width: 90px">
@@ -48,7 +48,7 @@
                             <el-option label="bold" value="bold"> </el-option>
                         </el-select>
                     </div>
-                </div> -->
+                </div>
 
                 <!-- 全局主题 -->
                 <el-divider content-position="left">全局主题</el-divider>

mayfly_go_web/src/views/ops/machine/ServiceManage.vue

@@ -97,12 +97,12 @@
             v-if="terminalDialog.visible"
             title="终端"
             v-model="terminalDialog.visible"
-            width="70%"
+            width="80%"
             :close-on-click-modal="false"
             :modal="false"
             @close="closeTermnial"
         >
-            <ssh-terminal ref="terminal" :cmd="terminalDialog.cmd" :machineId="terminalDialog.machineId" height="600px" />
+            <ssh-terminal ref="terminal" :cmd="terminalDialog.cmd" :machineId="terminalDialog.machineId" height="560px" />
         </el-dialog>
 
         <script-edit

mayfly_go_web/src/views/ops/machine/SshTerminal.vue

@@ -9,7 +9,7 @@ import { FitAddon } from 'xterm-addon-fit';
 import { getSession } from '@/common/utils/storage.ts';
 import config from '@/common/config';
 import { useStore } from '@/store/index.ts';
-import { toRefs, watch, computed, reactive, defineComponent, onMounted, onBeforeUnmount } from 'vue';
+import { nextTick, toRefs, watch, computed, reactive, defineComponent, onMounted, onBeforeUnmount } from 'vue';
 
 export default defineComponent({
     name: 'SshTerminal',
@@ -27,22 +27,19 @@ export default defineComponent({
             socket: null as any,
         });
 
+        const resize = 1;
+        const data = 2;
+
         watch(props, (newValue) => {
             state.machineId = newValue.machineId;
             state.cmd = newValue.cmd;
             state.height = newValue.height;
-            if (state.machineId) {
-                initSocket();
-            }
         });
 
         onMounted(() => {
             state.machineId = props.machineId;
             state.height = props.height;
             state.cmd = props.cmd;
-            if (state.machineId) {
-                initSocket();
-            }
         });
 
         onBeforeUnmount(() => {
@@ -56,14 +53,19 @@ export default defineComponent({
             return store.state.themeConfig.themeConfig;
         });
 
+        nextTick(() => {
+            initXterm();
+            initSocket();
+        });
+
         function initXterm() {
             const term: any = new Terminal({
                 fontSize: getThemeConfig.value.terminalFontSize || 15,
-                // fontWeight: getThemeConfig.value.terminalFontWeight || 'normal',
-                fontFamily: 'JetBrainsMono, Consolas, Menlo, Monaco',
+                fontWeight: getThemeConfig.value.terminalFontWeight || 'normal',
+                fontFamily: 'JetBrainsMono, monaco, Consolas, Lucida Console, monospace',
                 cursorBlink: true,
-                // cursorStyle: 'underline', //光标样式
                 disableStdin: false,
+                letterSpacing: -1,
                 theme: {
                     foreground: getThemeConfig.value.terminalForeground || '#c5c8c6', //字体
                     background: getThemeConfig.value.terminalBackground || '#121212', //背景色
@@ -82,6 +84,14 @@ export default defineComponent({
                 try {
                     // 窗口大小改变时，触发xterm的resize方法使自适应
                     fitAddon.fit();
+                    if (state.term) {
+                        state.term.focus();
+                        send({
+                            type: resize,
+                            Cols: parseInt(state.term.cols),
+                            Rows: parseInt(state.term.rows),
+                        });
+                    }
                 } catch (e) {
                     console.log(e);
                 }
@@ -104,20 +114,14 @@ export default defineComponent({
             term.onData((key: any) => {
                 sendCmd(key);
             });
-            // 为解决窗体resize方法才会向后端发送列数和行数，所以页面加载时也要触发此方法
-            send({
-                type: 'resize',
-                Cols: parseInt(term.cols),
-                Rows: parseInt(term.rows),
-            });
-            // 如果有初始要执行的命令，则发送执行命令
-            if (state.cmd) {
-                sendCmd(state.cmd + ' \r');
-            }
         }
 
         function initSocket() {
-            state.socket = new WebSocket(`${config.baseWsUrl}/machines/${state.machineId}/terminal?token=${getSession('token')}`);
+            state.socket = new WebSocket(
+                `${config.baseWsUrl}/machines/${state.machineId}/terminal?token=${getSession('token')}&cols=${state.term.cols}&rows=${
+                    state.term.rows
+                }`
+            );
             // 监听socket连接
             state.socket.onopen = open;
             // 监听socket错误信息
@@ -129,8 +133,10 @@ export default defineComponent({
         }
 
         function open() {
-            console.log('socket连接成功');
-            initXterm();
+            // 如果有初始要执行的命令，则发送执行命令
+            if (state.cmd) {
+                sendCmd(state.cmd + ' \r');
+            }
             //开启心跳
             //   this.start();
         }
@@ -151,20 +157,9 @@ export default defineComponent({
             //   this.reconnect()
         }
 
-        function getMessage(msg: string) {
-            //   console.log(msg)
-            state.term.write(msg['data']);
-            //msg是返回的数据
-            //   msg = JSON.parse(msg.data);
-            //   this.socket.send("ping");//有事没事ping一下，看看ws还活着没
-            //   //switch用于处理返回的数据，根据返回数据的格式去判断
-            //   switch (msg["operation"]) {
-            //     case "stdout":
-            //       this.term.write(msg["data"]);//这里write也许不是固定的，失败后找后端看一下该怎么往term里面write
-            //       break;
-            //     default:
-            //       console.error("Unexpected message type:", msg);//但是错误是固定的。。。。
-            //   }
+        function getMessage(msg: any) {
+            // msg.data是真正后端返回的数据
+            state.term.write(msg.data);
             //收到服务器信息，心跳重置
             //   this.reset();
         }
@@ -175,7 +170,7 @@ export default defineComponent({
 
         function sendCmd(key: any) {
             send({
-                type: 'cmd',
+                type: data,
                 msg: key,
             });
         }

mayfly_go_web/yarn.lock

@@ -633,10 +633,10 @@ echarts@^5.3.3:
     tslib "2.3.0"
     zrender "5.3.2"
 
-element-plus@^2.2.12:
-  version "2.2.12"
-  resolved "https://registry.npmmirror.com/element-plus/-/element-plus-2.2.12.tgz#b6c4e298e02ba9b904d70daa54def27b2de8c43c"
-  integrity sha512-g/hIHj3b+dND2R3YRvyvCJtJhQvR7lWvXqhJaoxaQmajjNWedoe4rttxG26fOSv9YCC2wN4iFDcJHs70YFNgrA==
+element-plus@^2.2.13:
+  version "2.2.13"
+  resolved "https://registry.npmmirror.com/element-plus/-/element-plus-2.2.13.tgz#9ec3a9fa6587c93a87bb0d30c200ac8ee4f69c8b"
+  integrity sha512-dKQ7BPZC8deUPhv+6s4GgOL0GyGj3KpUarywxm6s1nWnHjH6FqeZlUcxPqBvJd7W/d81POayx3B13GP+rfkG9g==
   dependencies:
     "@ctrl/tinycolor" "^3.4.1"
     "@element-plus/icons-vue" "^2.0.6"

server/internal/devops/api/machine.go

@@ -160,21 +160,16 @@ func (m *Machine) WsSSH(g *gin.Context) {
 		panic(biz.NewBizErr("\033[1;31m您没有权限操作该机器终端,请重新登录后再试~\033[0m"))
 	}
 
-	cols := ginx.QueryInt(g, "cols", 80)
-	rows := ginx.QueryInt(g, "rows", 40)
-
 	cli := m.MachineApp.GetCli(GetMachineId(g))
 	biz.ErrIsNilAppendErr(m.ProjectApp.CanAccess(rc.LoginAccount.Id, cli.GetMachine().ProjectId), "%s")
 
-	sws, err := machine.NewLogicSshWsSession(cols, rows, cli, wsConn)
-	biz.ErrIsNilAppendErr(err, "\033[1;31m连接失败：%s\033[0m")
-	defer sws.Close()
+	cols := ginx.QueryInt(g, "cols", 80)
+	rows := ginx.QueryInt(g, "rows", 40)
 
-	quitChan := make(chan bool, 3)
-	sws.Start(quitChan)
-	go sws.Wait(quitChan)
-
-	<-quitChan
+	mts, err := machine.NewTerminalSession(utils.RandString(16), wsConn, cli, rows, cols)
+	biz.ErrIsNilAppendErr(err, "\033[1;31m连接失败: %s\033[0m")
+	mts.Start()
+	defer mts.Stop()
 }
 
 func GetMachineId(g *gin.Context) uint64 {

server/internal/devops/infrastructure/machine/shell.go

@@ -1,19 +0,0 @@
-package machine
-
-const StatsShell = `
-cat /proc/uptime
-echo '-----'
-/bin/hostname -f
-echo '-----'
-cat /proc/loadavg
-echo '-----'
-cat /proc/meminfo
-echo '-----'
-df -B1
-echo '-----'
-/sbin/ip -o addr
-echo '-----'
-/bin/cat /proc/net/dev
-echo '-----'
-top -b -n 1 | grep Cpu
-`

server/internal/devops/infrastructure/machine/stats.go

@@ -53,6 +53,24 @@ type Stats struct {
 	CPU          CPUInfo // or []CPUInfo to get all the cpu-core's stats?
 }
 
+const StatsShell = `
+cat /proc/uptime
+echo '-----'
+/bin/hostname -f
+echo '-----'
+cat /proc/loadavg
+echo '-----'
+cat /proc/meminfo
+echo '-----'
+df -B1
+echo '-----'
+/sbin/ip -o addr
+echo '-----'
+/bin/cat /proc/net/dev
+echo '-----'
+top -b -n 1 | grep Cpu
+`
+
 func (c *Cli) GetAllStats() *Stats {
 	res, _ := c.Run(StatsShell)
 	infos := strings.Split(*res, "-----")

server/internal/devops/infrastructure/machine/terminal.go

@@ -0,0 +1,74 @@
+package machine
+
+import (
+	"bufio"
+	"io"
+
+	"golang.org/x/crypto/ssh"
+)
+
+type Terminal struct {
+	SshSession   *ssh.Session
+	StdinPipe    io.WriteCloser
+	StdoutReader *bufio.Reader
+}
+
+// 新建机器ssh终端
+func NewTerminal(cli *Cli) (*Terminal, error) {
+	sshSession, err := cli.GetSession()
+	if err != nil {
+		return nil, err
+	}
+
+	stdoutPipe, err := sshSession.StdoutPipe()
+	if err != nil {
+		return nil, err
+	}
+	stdoutReader := bufio.NewReader(stdoutPipe)
+
+	stdinPipe, err := sshSession.StdinPipe()
+	if err != nil {
+		return nil, err
+	}
+
+	terminal := Terminal{
+		SshSession:   sshSession,
+		StdinPipe:    stdinPipe,
+		StdoutReader: stdoutReader,
+	}
+
+	return &terminal, nil
+}
+
+func (t *Terminal) Write(p []byte) (int, error) {
+	return t.StdinPipe.Write(p)
+}
+
+func (t *Terminal) ReadRune() (r rune, size int, err error) {
+	return t.StdoutReader.ReadRune()
+}
+
+func (t *Terminal) Close() error {
+	if t.SshSession != nil {
+		return t.SshSession.Close()
+	}
+	return nil
+}
+
+func (t *Terminal) WindowChange(h int, w int) error {
+	return t.SshSession.WindowChange(h, w)
+}
+
+func (t *Terminal) RequestPty(term string, h, w int) error {
+	modes := ssh.TerminalModes{
+		ssh.ECHO:          1,
+		ssh.TTY_OP_ISPEED: 14400,
+		ssh.TTY_OP_OSPEED: 14400,
+	}
+
+	return t.SshSession.RequestPty(term, h, w, modes)
+}
+
+func (t *Terminal) Shell() error {
+	return t.SshSession.Shell()
+}

server/internal/devops/infrastructure/machine/terminal_session.go

@@ -0,0 +1,165 @@
+package machine
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"mayfly-go/pkg/global"
+	"time"
+	"unicode/utf8"
+
+	"github.com/gorilla/websocket"
+)
+
+const (
+	Resize = 1
+	Data   = 2
+)
+
+type TerminalSession struct {
+	ID       string
+	wsConn   *websocket.Conn
+	terminal *Terminal
+	ctx      context.Context
+	cancel   context.CancelFunc
+	dataChan chan rune
+	tick     *time.Ticker
+}
+
+func NewTerminalSession(sessionId string, ws *websocket.Conn, cli *Cli, rows, cols int) (*TerminalSession, error) {
+	terminal, err := NewTerminal(cli)
+	if err != nil {
+		return nil, err
+	}
+	err = terminal.RequestPty("xterm-256color", rows, cols)
+	if err != nil {
+		return nil, err
+	}
+	err = terminal.Shell()
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	tick := time.NewTicker(time.Millisecond * time.Duration(60))
+	ts := &TerminalSession{
+		ID:       sessionId,
+		wsConn:   ws,
+		terminal: terminal,
+		ctx:      ctx,
+		cancel:   cancel,
+		dataChan: make(chan rune),
+		tick:     tick,
+	}
+	return ts, nil
+}
+
+func (r TerminalSession) Start() {
+	go r.readFormTerminal()
+	go r.writeToWebsocket()
+	r.receiveWsMsg()
+}
+
+func (r TerminalSession) Stop() {
+	global.Log.Debug("close machine ssh terminal session")
+	r.tick.Stop()
+	r.cancel()
+	if r.terminal != nil {
+		if err := r.terminal.Close(); err != nil {
+			global.Log.Errorf("关闭机器ssh终端失败: %s", err.Error())
+		}
+	}
+}
+
+func (ts TerminalSession) readFormTerminal() {
+	for {
+		select {
+		case <-ts.ctx.Done():
+			return
+		default:
+			rn, size, err := ts.terminal.ReadRune()
+			if err != nil {
+				if err != io.EOF {
+					global.Log.Error("机器ssh终端读取消息失败: ", err)
+				}
+				return
+			}
+			if size > 0 {
+				ts.dataChan <- rn
+			}
+		}
+	}
+}
+
+func (ts TerminalSession) writeToWebsocket() {
+	var buf []byte
+	for {
+		select {
+		case <-ts.ctx.Done():
+			return
+		case <-ts.tick.C:
+			if len(buf) > 0 {
+				s := string(buf)
+				if err := WriteMessage(ts.wsConn, s); err != nil {
+					global.Log.Error("机器ssh终端发送消息至websocket失败: ", err)
+					return
+				}
+				buf = []byte{}
+			}
+		case data := <-ts.dataChan:
+			if data != utf8.RuneError {
+				p := make([]byte, utf8.RuneLen(data))
+				utf8.EncodeRune(p, data)
+				buf = append(buf, p...)
+			} else {
+				buf = append(buf, []byte("@")...)
+			}
+		}
+	}
+}
+
+type WsMsg struct {
+	Type int    `json:"type"`
+	Msg  string `json:"msg"`
+	Cols int    `json:"cols"`
+	Rows int    `json:"rows"`
+}
+
+func (ts *TerminalSession) receiveWsMsg() {
+	wsConn := ts.wsConn
+	for {
+		select {
+		case <-ts.ctx.Done():
+			return
+		default:
+			// read websocket msg
+			_, wsData, err := wsConn.ReadMessage()
+			if err != nil {
+				global.Log.Debug("机器ssh终端读取websocket消息失败: ", err)
+				return
+			}
+			// 解析消息
+			msgObj := WsMsg{}
+			if err := json.Unmarshal(wsData, &msgObj); err != nil {
+				global.Log.Error("机器ssh终端消息解析失败: ", err)
+			}
+			switch msgObj.Type {
+			case Resize:
+				if msgObj.Cols > 0 && msgObj.Rows > 0 {
+					if err := ts.terminal.WindowChange(msgObj.Rows, msgObj.Cols); err != nil {
+						global.Log.Error("ssh pty change windows size failed")
+					}
+				}
+			case Data:
+				_, err := ts.terminal.Write([]byte(msgObj.Msg))
+				if err != nil {
+					global.Log.Debug("机器ssh终端写入消息失败: %s", err)
+				}
+			}
+		}
+	}
+}
+
+func WriteMessage(ws *websocket.Conn, msg string) error {
+	return ws.WriteMessage(websocket.TextMessage, []byte(msg))
+}

server/internal/devops/infrastructure/machine/ws_shell_session.go

@@ -1,195 +0,0 @@
-package machine
-
-import (
-	"bytes"
-	"encoding/json"
-	"io"
-	"mayfly-go/pkg/global"
-	"sync"
-	"time"
-
-	"github.com/gorilla/websocket"
-	"golang.org/x/crypto/ssh"
-)
-
-type safeBuffer struct {
-	buffer bytes.Buffer
-	mu     sync.Mutex
-}
-
-func (w *safeBuffer) Write(p []byte) (int, error) {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	return w.buffer.Write(p)
-}
-func (w *safeBuffer) Bytes() []byte {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	return w.buffer.Bytes()
-}
-func (w *safeBuffer) Reset() {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	w.buffer.Reset()
-}
-
-const (
-	wsMsgCmd    = "cmd"
-	wsMsgResize = "resize"
-)
-
-type WsMsg struct {
-	Type string `json:"type"`
-	Msg  string `json:"msg"`
-	Cols int    `json:"cols"`
-	Rows int    `json:"rows"`
-}
-
-type LogicSshWsSession struct {
-	stdinPipe       io.WriteCloser
-	comboOutput     *safeBuffer //ssh 终端混合输出
-	inputFilterBuff *safeBuffer //用来过滤输入的命令和ssh_filter配置对比的
-	session         *ssh.Session
-	wsConn          *websocket.Conn
-}
-
-func NewLogicSshWsSession(cols, rows int, cli *Cli, wsConn *websocket.Conn) (*LogicSshWsSession, error) {
-	sshSession, err := cli.GetSession()
-	if err != nil {
-		return nil, err
-	}
-
-	stdinP, err := sshSession.StdinPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	comboWriter := new(safeBuffer)
-	inputBuf := new(safeBuffer)
-	//ssh.stdout and stderr will write output into comboWriter
-	sshSession.Stdout = comboWriter
-	sshSession.Stderr = comboWriter
-
-	modes := ssh.TerminalModes{
-		ssh.ECHO:          1,     // disable echo
-		ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
-		ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
-	}
-	// Request pseudo terminal
-	if err := sshSession.RequestPty("xterm-256color", rows, cols, modes); err != nil {
-		return nil, err
-	}
-	// Start remote shell
-	if err := sshSession.Shell(); err != nil {
-		return nil, err
-	}
-	return &LogicSshWsSession{
-		stdinPipe:       stdinP,
-		comboOutput:     comboWriter,
-		inputFilterBuff: inputBuf,
-		session:         sshSession,
-		wsConn:          wsConn,
-	}, nil
-}
-
-//Close 关闭
-func (sws *LogicSshWsSession) Close() {
-	if sws.session != nil {
-		sws.session.Close()
-	}
-	if sws.comboOutput != nil {
-		sws.comboOutput = nil
-	}
-}
-
-func (sws *LogicSshWsSession) Start(quitChan chan bool) {
-	go sws.receiveWsMsg(quitChan)
-	go sws.sendComboOutput(quitChan)
-}
-
-//receiveWsMsg  receive websocket msg do some handling then write into ssh.session.stdin
-func (sws *LogicSshWsSession) receiveWsMsg(exitCh chan bool) {
-	wsConn := sws.wsConn
-	//tells other go routine quit
-	defer setQuit(exitCh)
-	for {
-		select {
-		case <-exitCh:
-			return
-		default:
-			//read websocket msg
-			_, wsData, err := wsConn.ReadMessage()
-			if err != nil {
-				if websocket.IsCloseError(err, websocket.CloseGoingAway, websocket.CloseNoStatusReceived) {
-					return
-				}
-				global.Log.Error("reading webSocket message failed: ", err)
-				return
-			}
-			//unmashal bytes into struct
-			msgObj := WsMsg{}
-			if err := json.Unmarshal(wsData, &msgObj); err != nil {
-				global.Log.Error("unmarshal websocket message failed：", err)
-			}
-			switch msgObj.Type {
-			case wsMsgResize:
-				//handle xterm.js size change
-				if msgObj.Cols > 0 && msgObj.Rows > 0 {
-					if err := sws.session.WindowChange(msgObj.Rows, msgObj.Cols); err != nil {
-						global.Log.Error("ssh pty change windows size failed")
-					}
-				}
-			case wsMsgCmd:
-				sws.sendWebsocketInputCommandToSshSessionStdinPipe([]byte(msgObj.Msg))
-			}
-		}
-	}
-}
-
-//sendWebsocketInputCommandToSshSessionStdinPipe
-func (sws *LogicSshWsSession) sendWebsocketInputCommandToSshSessionStdinPipe(cmdBytes []byte) {
-	if _, err := sws.stdinPipe.Write(cmdBytes); err != nil {
-		global.Log.Error("ws cmd bytes write to ssh.stdin pipe failed")
-	}
-}
-
-func (sws *LogicSshWsSession) sendComboOutput(exitCh chan bool) {
-	wsConn := sws.wsConn
-	//todo 优化成一个方法
-	//tells other go routine quit
-	defer setQuit(exitCh)
-
-	//every 120ms write combine output bytes into websocket response
-	tick := time.NewTicker(time.Millisecond * time.Duration(60))
-	//for range time.Tick(120 * time.Millisecond){}
-	defer tick.Stop()
-	for {
-		select {
-		case <-tick.C:
-			if sws.comboOutput == nil {
-				return
-			}
-			bs := sws.comboOutput.Bytes()
-			if len(bs) > 0 {
-				err := wsConn.WriteMessage(websocket.TextMessage, bs)
-				if err != nil {
-					global.Log.Error("ssh sending combo output to webSocket failed")
-				}
-				sws.comboOutput.buffer.Reset()
-			}
-
-		case <-exitCh:
-			return
-		}
-	}
-}
-
-func (sws *LogicSshWsSession) Wait(quitChan chan bool) {
-	if err := sws.session.Wait(); err != nil {
-		setQuit(quitChan)
-	}
-}
-
-func setQuit(ch chan bool) {
-	ch <- true
-}

server/pkg/ws/ws.go

@@ -56,7 +56,7 @@ func checkConn() {
 
 // 删除ws连接
 func Delete(userid uint64) {
-	global.Log.Info("移除websocket连接：uid = ", userid)
+	global.Log.Debug("移除websocket连接：uid = ", userid)
 	conn := conns[userid]
 	if conn != nil {
 		conn.Close()