1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/packer/builder/lxd/command.go b/vendor/github.com/mitchellh/packer/builder/lxd/command.go
new file mode 100644
index 00000000..c9a39279
--- /dev/null
+++ b/vendor/github.com/mitchellh/packer/builder/lxd/command.go
@@ -0,0 +1,43 @@
+package lxd
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os/exec"
+	"strings"
+)
+
+// CommandWrapper is a type that given a command, will possibly modify that
+// command in-flight. This might return an error.
+type CommandWrapper func(string) (string, error)
+
+// ShellCommand takes a command string and returns an *exec.Cmd to execute
+// it within the context of a shell (/bin/sh).
+func ShellCommand(command string) *exec.Cmd {
+	return exec.Command("/bin/sh", "-c", command)
+}
+
+// Yeah...LXD calls `lxc` because the command line is different between the
+// packages. This should also avoid a naming collision between the LXC builder.
+func LXDCommand(args ...string) (string, error) {
+	var stdout, stderr bytes.Buffer
+
+	log.Printf("Executing lxc command: %#v", args)
+	cmd := exec.Command("lxc", args...)
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	err := cmd.Run()
+
+	stdoutString := strings.TrimSpace(stdout.String())
+	stderrString := strings.TrimSpace(stderr.String())
+
+	if _, ok := err.(*exec.ExitError); ok {
+		err = fmt.Errorf("LXD command error: %s", stderrString)
+	}
+
+	log.Printf("stdout: %s", stdoutString)
+	log.Printf("stderr: %s", stderrString)
+
+	return stdoutString, err
+}