1 files changed, 151 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/packer/builder/lxc/communicator.go b/vendor/github.com/mitchellh/packer/builder/lxc/communicator.go
new file mode 100644
index 00000000..8d976597
--- /dev/null
+++ b/vendor/github.com/mitchellh/packer/builder/lxc/communicator.go
@@ -0,0 +1,151 @@
+package lxc
+
+import (
+	"fmt"
+	"github.com/hashicorp/packer/packer"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"syscall"
+)
+
+type LxcAttachCommunicator struct {
+	RootFs        string
+	ContainerName string
+	CmdWrapper    CommandWrapper
+}
+
+func (c *LxcAttachCommunicator) Start(cmd *packer.RemoteCmd) error {
+	localCmd, err := c.Execute(cmd.Command)
+
+	if err != nil {
+		return err
+	}
+
+	localCmd.Stdin = cmd.Stdin
+	localCmd.Stdout = cmd.Stdout
+	localCmd.Stderr = cmd.Stderr
+	if err := localCmd.Start(); err != nil {
+		return err
+	}
+
+	go func() {
+		exitStatus := 0
+		if err := localCmd.Wait(); 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()
+				}
+			}
+		}
+
+		log.Printf(
+			"lxc-attach execution exited with '%d': '%s'",
+			exitStatus, cmd.Command)
+		cmd.SetExited(exitStatus)
+	}()
+
+	return nil
+}
+
+func (c *LxcAttachCommunicator) Upload(dst string, r io.Reader, fi *os.FileInfo) error {
+	dst = filepath.Join(c.RootFs, dst)
+	log.Printf("Uploading to rootfs: %s", dst)
+	tf, err := ioutil.TempFile("", "packer-lxc-attach")
+	if err != nil {
+		return fmt.Errorf("Error uploading file to rootfs: %s", err)
+	}
+	defer os.Remove(tf.Name())
+	io.Copy(tf, r)
+
+	cpCmd, err := c.CmdWrapper(fmt.Sprintf("sudo cp %s %s", tf.Name(), dst))
+	if err != nil {
+		return err
+	}
+
+	log.Printf("Running copy command: %s", dst)
+
+	return ShellCommand(cpCmd).Run()
+}
+
+func (c *LxcAttachCommunicator) UploadDir(dst string, src string, exclude []string) error {
+	// TODO: remove any file copied if it appears in `exclude`
+	dest := filepath.Join(c.RootFs, dst)
+	log.Printf("Uploading directory '%s' to rootfs '%s'", src, dest)
+	cpCmd, err := c.CmdWrapper(fmt.Sprintf("sudo cp -R %s/. %s", src, dest))
+	if err != nil {
+		return err
+	}
+
+	return ShellCommand(cpCmd).Run()
+}
+
+func (c *LxcAttachCommunicator) Download(src string, w io.Writer) error {
+	src = filepath.Join(c.RootFs, src)
+	log.Printf("Downloading from rootfs dir: %s", src)
+	f, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	if _, err := io.Copy(w, f); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *LxcAttachCommunicator) DownloadDir(src string, dst string, exclude []string) error {
+	return fmt.Errorf("DownloadDir is not implemented for lxc")
+}
+
+func (c *LxcAttachCommunicator) Execute(commandString string) (*exec.Cmd, error) {
+	log.Printf("Executing with lxc-attach in container: %s %s %s", c.ContainerName, c.RootFs, commandString)
+	command, err := c.CmdWrapper(
+		fmt.Sprintf("sudo lxc-attach --name %s -- /bin/sh -c \"%s\"", c.ContainerName, commandString))
+	if err != nil {
+		return nil, err
+	}
+
+	localCmd := ShellCommand(command)
+	log.Printf("Executing lxc-attach: %s %#v", localCmd.Path, localCmd.Args)
+
+	return localCmd, nil
+}
+
+func (c *LxcAttachCommunicator) CheckInit() (string, error) {
+	log.Printf("Debug runlevel exec")
+	localCmd, err := c.Execute("/sbin/runlevel")
+
+	if err != nil {
+		return "", err
+	}
+
+	pr, _ := localCmd.StdoutPipe()
+	if err = localCmd.Start(); err != nil {
+		return "", err
+	}
+
+	output, err := ioutil.ReadAll(pr)
+
+	if err != nil {
+		return "", err
+	}
+
+	err = localCmd.Wait()
+
+	if err != nil {
+		return "", err
+	}
+
+	return strings.TrimSpace(string(output)), nil
+}