74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
package shell_local
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import (
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"context"
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"syscall"
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"github.com/hashicorp/packer/packer"
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)
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type Communicator struct {
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ExecuteCommand []string
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}
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func (c *Communicator) Start(ctx context.Context, cmd *packer.RemoteCmd) error {
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if len(c.ExecuteCommand) == 0 {
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return fmt.Errorf("Error launching command via shell-local communicator: No ExecuteCommand provided")
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}
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// Build the local command to execute
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log.Printf("[INFO] (shell-local communicator): Executing local shell command %s", c.ExecuteCommand)
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localCmd := exec.CommandContext(ctx, c.ExecuteCommand[0], c.ExecuteCommand[1:]...)
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localCmd.Stdin = cmd.Stdin
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localCmd.Stdout = cmd.Stdout
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localCmd.Stderr = cmd.Stderr
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// Start it. If it doesn't work, then error right away.
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if err := localCmd.Start(); err != nil {
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return err
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}
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// We've started successfully. Start a goroutine to wait for
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// it to complete and track exit status.
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go func() {
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var exitStatus int
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err := localCmd.Wait()
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if err != nil {
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if exitErr, ok := err.(*exec.ExitError); ok {
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exitStatus = 1
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// There is no process-independent way to get the REAL
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// exit status so we just try to go deeper.
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if status, ok := exitErr.Sys().(syscall.WaitStatus); ok {
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exitStatus = status.ExitStatus()
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}
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}
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}
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cmd.SetExited(exitStatus)
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}()
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return nil
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}
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func (c *Communicator) Upload(string, io.Reader, *os.FileInfo) error {
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return fmt.Errorf("upload not supported")
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}
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func (c *Communicator) UploadDir(string, string, []string) error {
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return fmt.Errorf("uploadDir not supported")
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}
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func (c *Communicator) Download(string, io.Writer) error {
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return fmt.Errorf("download not supported")
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}
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func (c *Communicator) DownloadDir(string, string, []string) error {
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return fmt.Errorf("downloadDir not supported")
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}
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