Exec-Go v0.2.1-alpha

External command exec library for golang

Check details at GoDoc

Features

• Util of native os.exec.cmd library.
• Pipeline library for commands.
• (Planning) PipelineGroup for parallelly manage multi-pipelines.
• (Plan to Deprecate) Cron Job function for command.

Cmd

• Error Message
  Error from native library is the output of exit, you will get error like exit status 1 except real error message. Use cmd.Error() to get it.
• Cancel
  For both Linux and Windows. On Linux, it will kill process and it's children. On Windows, it may not work if the process create child processes.
• STDOUT Streaming
  You can do it by Read() and GetMsg()

  cmd := exec.NewCmd("", "bash", "-c", `echo 1; sleep 1; echo 1; sleep 1; echo 1; sleep 1;`)
    err := cmd.Start()
  if err != nil {
    log.Fatal(err)
  }
  for cmd.Read() {
    fmt.Println(string(cmd.GetMsg()))
  }
  err = cmd.Wait()
  if err != nil {
    log.Fatal(err)
  }
  

  Or setup EventHandler

  cmd := exec.NewCmd("", "bash", "-c", `echo 1; sleep 1; echo 1; sleep 1; echo 1; sleep 1;`)
  cmd.SetEventHandler(&exec.EventHandler{
    CmdRead: func(cmd *exec.Cmd) {
      fmt.Println(string(cmd.GetMsg()))
    },
  })
  

Pipeline

Run set of commands. Also support Cancel and STDOUT Streaming. About STDOUT Streaming of pipeline, currently only support EventHandler way.