153 lines
3.5 KiB
Go
153 lines
3.5 KiB
Go
// SiYuan - Build Your Eternal Digital Garden
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// Copyright (c) 2020-present, b3log.org
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package server
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import (
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"fmt"
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"net"
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"os"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/88250/gulu"
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goPS "github.com/mitchellh/go-ps"
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"github.com/siyuan-note/logging"
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"github.com/siyuan-note/siyuan/kernel/util"
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)
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func killRunningKernel() {
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defer logging.Recover()
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now := time.Now()
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defer logging.LogInfof("check running kernel elapsed [%dms]", time.Since(now).Milliseconds())
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processes, err := goPS.Processes()
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if nil != err {
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logging.LogErrorf("get processes failed: %s", err)
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killByPort(util.FixedPort)
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return
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}
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currentPid := os.Getpid()
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killed := false
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for _, process := range processes {
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if process.Pid() == currentPid {
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continue
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}
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procName := strings.ToLower(process.Executable())
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if strings.Contains(procName, "siyuan-kernel") {
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kill(fmt.Sprintf("%d", process.Pid()))
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killed = true
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}
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}
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if killed {
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portJSON := filepath.Join(util.HomeDir, ".config", "siyuan", "port.json")
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os.RemoveAll(portJSON)
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}
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}
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func killByPort(port string) {
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if !isPortOpen(port) {
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return
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}
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portJSON := filepath.Join(util.HomeDir, ".config", "siyuan", "port.json")
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os.RemoveAll(portJSON)
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pid := pidByPort(port)
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if "" == pid {
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return
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}
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pidInt, _ := strconv.Atoi(pid)
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proc, _ := goPS.FindProcess(pidInt)
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var name string
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if nil != proc {
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name = proc.Executable()
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}
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kill(pid)
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logging.LogInfof("killed process [name=%s, pid=%s]", name, pid)
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}
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func isPortOpen(port string) bool {
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timeout := time.Second
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conn, err := net.DialTimeout("tcp", net.JoinHostPort("127.0.0.1", port), timeout)
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if nil != err {
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return false
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}
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if nil != conn {
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conn.Close()
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return true
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}
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return false
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}
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func kill(pid string) {
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var killCmd *exec.Cmd
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if gulu.OS.IsWindows() {
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killCmd = exec.Command("cmd", "/c", "TASKKILL /F /PID "+pid)
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} else {
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killCmd = exec.Command("kill", "-9", pid)
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}
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gulu.CmdAttr(killCmd)
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killCmd.CombinedOutput()
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}
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func pidByPort(port string) (ret string) {
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if gulu.OS.IsWindows() {
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cmd := exec.Command("cmd", "/c", "netstat -ano | findstr "+port)
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gulu.CmdAttr(cmd)
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data, err := cmd.CombinedOutput()
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if nil != err {
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logging.LogErrorf("netstat failed: %s", err)
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return
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}
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output := string(data)
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lines := strings.Split(output, "\n")
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for _, l := range lines {
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if strings.Contains(l, "LISTENING") {
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l = l[strings.Index(l, "LISTENING")+len("LISTENING"):]
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l = strings.TrimSpace(l)
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ret = l
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return
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}
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}
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return
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}
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cmd := exec.Command("lsof", "-Fp", "-i", ":"+port)
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gulu.CmdAttr(cmd)
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data, err := cmd.CombinedOutput()
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if nil != err {
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logging.LogErrorf("lsof failed: %s", err)
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return
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}
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output := string(data)
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lines := strings.Split(output, "\n")
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for _, l := range lines {
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if strings.HasPrefix(l, "p") {
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l = l[1:]
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ret = l
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return
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}
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}
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return
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}
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