90 lines
2 KiB
Go
90 lines
2 KiB
Go
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// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package process
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import (
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"bytes"
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"fmt"
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"os/exec"
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"time"
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"github.com/gogits/gogs/modules/log"
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)
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// Process represents a working process inherit from Gogs.
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type Process struct {
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Pid int64 // Process ID, not system one.
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Description string
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Start time.Time
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Cmd *exec.Cmd
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}
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// List of existing processes.
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var (
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curPid int64 = 1
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Processes []*Process
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)
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// Add adds a existing process and returns its PID.
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func Add(desc string, cmd *exec.Cmd) int64 {
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pid := curPid
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Processes = append(Processes, &Process{
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Pid: pid,
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Description: desc,
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Start: time.Now(),
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Cmd: cmd,
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})
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curPid++
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return pid
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}
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func ExecDir(dir, desc, cmdName string, args ...string) (string, string, error) {
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bufOut := new(bytes.Buffer)
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bufErr := new(bytes.Buffer)
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cmd := exec.Command(cmdName, args...)
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cmd.Dir = dir
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cmd.Stdout = bufOut
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cmd.Stderr = bufErr
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pid := Add(desc, cmd)
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err := cmd.Run()
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if errKill := Kill(pid); errKill != nil {
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log.Error("Exec: %v", pid, desc, errKill)
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}
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return bufOut.String(), bufErr.String(), err
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}
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// Exec starts executing a command and record its process.
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func Exec(desc, cmdName string, args ...string) (string, string, error) {
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return ExecDir("", desc, cmdName, args...)
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}
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// Remove removes a process from list.
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func Remove(pid int64) {
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for i, proc := range Processes {
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if proc.Pid == pid {
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Processes = append(Processes[:i], Processes[i+1:]...)
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return
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}
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}
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}
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// Kill kills and removes a process from list.
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func Kill(pid int64) error {
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for i, proc := range Processes {
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if proc.Pid == pid {
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if proc.Cmd.Process != nil && proc.Cmd.ProcessState != nil && !proc.Cmd.ProcessState.Exited() {
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if err := proc.Cmd.Process.Kill(); err != nil {
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return fmt.Errorf("fail to kill process(%d/%s): %v", proc.Pid, proc.Description, err)
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}
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}
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Processes = append(Processes[:i], Processes[i+1:]...)
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return nil
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}
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}
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return nil
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}
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