86 lines
2.0 KiB
Go
86 lines
2.0 KiB
Go
package shell
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"os/exec"
|
|
"syscall"
|
|
|
|
"github.com/mitchellh/packer/packer"
|
|
"github.com/mitchellh/packer/template/interpolate"
|
|
)
|
|
|
|
type Communicator struct {
|
|
ExecuteCommand []string
|
|
Ctx interpolate.Context
|
|
}
|
|
|
|
func (c *Communicator) Start(cmd *packer.RemoteCmd) error {
|
|
// Render the template so that we know how to execute the command
|
|
c.Ctx.Data = &ExecuteCommandTemplate{
|
|
Command: cmd.Command,
|
|
}
|
|
for i, field := range c.ExecuteCommand {
|
|
command, err := interpolate.Render(field, &c.Ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("Error processing command: %s", err)
|
|
}
|
|
|
|
c.ExecuteCommand[i] = command
|
|
}
|
|
|
|
// Build the local command to execute
|
|
localCmd := exec.Command(c.ExecuteCommand[0], c.ExecuteCommand[1:]...)
|
|
localCmd.Stdin = cmd.Stdin
|
|
localCmd.Stdout = cmd.Stdout
|
|
localCmd.Stderr = cmd.Stderr
|
|
|
|
// Start it. If it doesn't work, then error right away.
|
|
if err := localCmd.Start(); err != nil {
|
|
return err
|
|
}
|
|
|
|
// We've started successfully. Start a goroutine to wait for
|
|
// it to complete and track exit status.
|
|
go func() {
|
|
var exitStatus int
|
|
err := localCmd.Wait()
|
|
if err != nil {
|
|
if exitErr, ok := err.(*exec.ExitError); ok {
|
|
exitStatus = 1
|
|
|
|
// There is no process-independent way to get the REAL
|
|
// exit status so we just try to go deeper.
|
|
if status, ok := exitErr.Sys().(syscall.WaitStatus); ok {
|
|
exitStatus = status.ExitStatus()
|
|
}
|
|
}
|
|
}
|
|
|
|
cmd.SetExited(exitStatus)
|
|
}()
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c *Communicator) Upload(string, io.Reader, *os.FileInfo) error {
|
|
return fmt.Errorf("upload not supported")
|
|
}
|
|
|
|
func (c *Communicator) UploadDir(string, string, []string) error {
|
|
return fmt.Errorf("uploadDir not supported")
|
|
}
|
|
|
|
func (c *Communicator) Download(string, io.Writer) error {
|
|
return fmt.Errorf("download not supported")
|
|
}
|
|
|
|
func (c *Communicator) DownloadDir(string, string, []string) error {
|
|
return fmt.Errorf("downloadDir not supported")
|
|
}
|
|
|
|
type ExecuteCommandTemplate struct {
|
|
Command string
|
|
}
|