113 lines
2.2 KiB
Go
113 lines
2.2 KiB
Go
package configui
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import (
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"bytes"
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"errors"
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"fmt"
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"os"
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"os/exec"
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"runtime"
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"sync"
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"time"
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)
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type File struct {
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Path string `json:"path"`
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Name string `json:"name"`
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Cmd string `json:"cmd"`
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// RO is readonly
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RO bool `json:"ro"`
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Lang string `json:"lang,omitempty"`
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// Order order of the display on ui
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Order int `json:"order"`
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// used for parsing post data
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Data string `json:"data,omitempty"`
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lock sync.RWMutex `json:"-"`
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owner *ConfigUI `json:"-"`
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run chan struct{} `json:"-"`
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pid int `json:"-"`
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// deprecated
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Action string `json:"action,omitempty"`
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}
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func (f *File) Read() ([]byte, error) {
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f.lock.RLock()
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defer f.lock.RUnlock()
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data, err := os.ReadFile(f.Path)
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if err != nil {
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f.owner.log.Error(err)
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return nil, err
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}
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return data, nil
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}
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func (f *File) Write(data []byte) error {
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if f.RO {
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return errors.New("this file has readonly set")
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}
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f.lock.Lock()
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defer f.lock.Unlock()
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info, err := os.Stat(f.Path)
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if err != nil {
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return err
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}
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return os.WriteFile(f.Path, data, info.Mode())
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}
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func (f *File) Do(CmdTimeout time.Duration, report chan int) (string, error) {
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if f.Cmd == "" {
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return "", nil
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}
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f.lock.RLock()
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defer f.lock.RUnlock()
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// limit running instance to 1
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if cap(f.run) == 0 {
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f.run = make(chan struct{}, 1)
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}
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select {
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case f.run <- struct{}{}:
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defer func() { <-f.run }()
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default:
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f.owner.log.Error("task is running: ", f.Name)
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return "", fmt.Errorf("another task of %s is running with pid: %d", f.Name, f.pid)
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}
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// prepare cmd
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cmd := &exec.Cmd{}
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if runtime.GOOS == "windows" {
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cmd = exec.Command(f.owner.SHELL, "/c", f.Cmd)
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} else {
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cmd = exec.Command(f.owner.SHELL, "-c", f.Cmd)
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}
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f.owner.log.Info("DO: ", f.Cmd)
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done := make(chan string, 1)
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var b bytes.Buffer
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cmd.Stdout = &b
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cmd.Stderr = &b
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err := cmd.Start()
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if err != nil {
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f.owner.log.Error("cmd start error: ", err)
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panic(err)
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}
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go func() {
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f.pid = cmd.Process.Pid
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report <- cmd.Process.Pid
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cmd.Wait()
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done <- b.String()
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}()
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select {
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case <-time.After(CmdTimeout):
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cmd.Process.Kill()
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f.owner.log.Error("timeout")
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return "", errors.New("command timeout")
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case out := <-done:
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f.owner.log.Info("\n", out)
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return out, nil
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}
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}
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