func executeCommand(command string, comm packer.Communicator) (err error) {
// Setup the remote command
stdout_r, stdout_w := io.Pipe()
stderr_r, stderr_w := io.Pipe()
var cmd packer.RemoteCmd
cmd.Command = command
cmd.Stdout = stdout_w
cmd.Stderr = stderr_w
log.Printf("Executing command: %s", cmd.Command)
err = comm.Start(&cmd)
if err != nil {
return fmt.Errorf("Failed executing command: %s", err)
}
exitChan := make(chan int, 1)
stdoutChan := iochan.DelimReader(stdout_r, '\n')
stderrChan := iochan.DelimReader(stderr_r, '\n')
go func() {
defer stdout_w.Close()
defer stderr_w.Close()
cmd.Wait()
exitChan <- cmd.ExitStatus
}()
OutputLoop:
for {
select {
case output := <-stderrChan:
Ui.Message(strings.TrimSpace(output))
case output := <-stdoutChan:
Ui.Message(strings.TrimSpace(output))
case exitStatus := <-exitChan:
log.Printf("Puppet provisioner exited with status %d", exitStatus)
if exitStatus != 0 {
return fmt.Errorf("Command exited with non-zero exit status: %d", exitStatus)
}
break OutputLoop
}
}
// Make sure we finish off stdout/stderr because we may have gotten
// a message from the exit channel first.
for output := range stdoutChan {
Ui.Message(output)
}
for output := range stderrChan {
Ui.Message(output)
}
return nil
}
func buildToolchain(wg *sync.WaitGroup, semaphore chan int, root string, platform Platform, verbose bool) error {
defer wg.Done()
semaphore <- 1
defer func() { <-semaphore }()
fmt.Printf("--> Toolchain: %s\n", platform.String())
scriptName := "make.bash"
if runtime.GOOS == "windows" {
scriptName = "make.bat"
}
var stderr bytes.Buffer
var stdout bytes.Buffer
scriptDir := filepath.Join(root, "src")
scriptPath := filepath.Join(scriptDir, scriptName)
cmd := exec.Command(scriptPath, "--no-clean")
cmd.Dir = scriptDir
cmd.Env = append(os.Environ(),
"GOARCH="+platform.Arch,
"GOOS="+platform.OS)
cmd.Stderr = &stderr
cmd.Stdout = &stdout
if verbose {
// In verbose mode, we output all stdout to the console.
r, w := io.Pipe()
cmd.Stdout = w
cmd.Stderr = io.MultiWriter(cmd.Stderr, w)
// Send all the output to stdout, and also make a done channel
// so that this compilation isn't done until we receive all output
doneCh := make(chan struct{})
go func() {
defer close(doneCh)
for line := range iochan.DelimReader(r, '\n') {
fmt.Printf("%s: %s", platform.String(), line)
}
}()
defer func() {
w.Close()
<-doneCh
}()
}
if err := cmd.Start(); err != nil {
return fmt.Errorf("Error building '%s': %s", platform.String(), err)
}
if err := cmd.Wait(); err != nil {
return fmt.Errorf("Error building '%s'.\n\nStdout: %s\n\nStderr: %s\n",
platform.String(), stdout.String(), stderr.String())
}
return nil
}
func (p *Provisioner) Provision(ui packer.Ui, comm packer.Communicator) error {
scripts := make([]string, len(p.config.Scripts))
copy(scripts, p.config.Scripts)
// If we have an inline script, then turn that into a temporary
// shell script and use that.
if p.config.Inline != nil {
tf, err := ioutil.TempFile("", "packer-shell")
if err != nil {
return fmt.Errorf("Error preparing shell script: %s", err)
}
defer os.Remove(tf.Name())
// Set the path to the temporary file
scripts = append(scripts, tf.Name())
// Write our contents to it
writer := bufio.NewWriter(tf)
writer.WriteString(fmt.Sprintf("#!%s\n", p.config.InlineShebang))
for _, command := range p.config.Inline {
if _, err := writer.WriteString(command + "\n"); err != nil {
return fmt.Errorf("Error preparing shell script: %s", err)
}
}
if err := writer.Flush(); err != nil {
return fmt.Errorf("Error preparing shell script: %s", err)
}
tf.Close()
}
for _, path := range scripts {
ui.Say(fmt.Sprintf("Provisioning with shell script: %s", path))
log.Printf("Opening %s for reading", path)
f, err := os.Open(path)
if err != nil {
return fmt.Errorf("Error opening shell script: %s", err)
}
defer f.Close()
log.Printf("Uploading %s => %s", path, p.config.RemotePath)
err = comm.Upload(p.config.RemotePath, f)
if err != nil {
return fmt.Errorf("Error uploading shell script: %s", err)
}
// Close the original file since we copied it
f.Close()
// Flatten the environment variables
flattendVars := strings.Join(p.config.Vars, " ")
// Compile the command
var command bytes.Buffer
t := template.Must(template.New("command").Parse(p.config.ExecuteCommand))
t.Execute(&command, &ExecuteCommandTemplate{flattendVars, p.config.RemotePath})
// Setup the remote command
stdout_r, stdout_w := io.Pipe()
stderr_r, stderr_w := io.Pipe()
var cmd packer.RemoteCmd
cmd.Command = command.String()
cmd.Stdout = stdout_w
cmd.Stderr = stderr_w
log.Printf("Executing command: %s", cmd.Command)
err = comm.Start(&cmd)
if err != nil {
return fmt.Errorf("Failed executing command: %s", err)
}
exitChan := make(chan int, 1)
stdoutChan := iochan.DelimReader(stdout_r, '\n')
stderrChan := iochan.DelimReader(stderr_r, '\n')
go func() {
defer stdout_w.Close()
defer stderr_w.Close()
cmd.Wait()
exitChan <- cmd.ExitStatus
}()
OutputLoop:
for {
select {
case output := <-stderrChan:
ui.Message(strings.TrimSpace(output))
case output := <-stdoutChan:
ui.Message(strings.TrimSpace(output))
case exitStatus := <-exitChan:
log.Printf("shell provisioner exited with status %d", exitStatus)
if exitStatus != 0 {
return fmt.Errorf("Script exited with non-zero exit status: %d", exitStatus)
}
break OutputLoop
}
}
// Make sure we finish off stdout/stderr because we may have gotten
// a message from the exit channel first.
for output := range stdoutChan {
ui.Message(output)
}
for output := range stderrChan {
ui.Message(output)
}
}
return nil
}
func runAndStream(cmd *exec.Cmd, ui packer.Ui) error {
stdout_r, stdout_w := io.Pipe()
stderr_r, stderr_w := io.Pipe()
defer stdout_w.Close()
defer stderr_w.Close()
log.Printf("Executing: %s %v", cmd.Path, cmd.Args[1:])
cmd.Stdout = stdout_w
cmd.Stderr = stderr_w
if err := cmd.Start(); err != nil {
return err
}
// Create the channels we'll use for data
exitCh := make(chan int, 1)
stdoutCh := iochan.DelimReader(stdout_r, '\n')
stderrCh := iochan.DelimReader(stderr_r, '\n')
// Start the goroutine to watch for the exit
go func() {
defer stdout_w.Close()
defer stderr_w.Close()
exitStatus := 0
err := cmd.Wait()
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()
}
}
exitCh <- exitStatus
}()
// This waitgroup waits for the streaming to end
var streamWg sync.WaitGroup
streamWg.Add(2)
streamFunc := func(ch <-chan string) {
defer streamWg.Done()
for data := range ch {
data = cleanOutputLine(data)
if data != "" {
ui.Message(data)
}
}
}
// Stream stderr/stdout
go streamFunc(stderrCh)
go streamFunc(stdoutCh)
// Wait for the process to end and then wait for the streaming to end
exitStatus := <-exitCh
streamWg.Wait()
if exitStatus != 0 {
return fmt.Errorf("Bad exit status: %d", exitStatus)
}
return nil
}
// StartWithUi runs the remote command and streams the output to any
// configured Writers for stdout/stderr, while also writing each line
// as it comes to a Ui.
func (r *RemoteCmd) StartWithUi(c Communicator, ui Ui) error {
stdout_r, stdout_w := io.Pipe()
stderr_r, stderr_w := io.Pipe()
defer stdout_w.Close()
defer stderr_w.Close()
// Retain the original stdout/stderr that we can replace back in.
originalStdout := r.Stdout
originalStderr := r.Stderr
defer func() {
r.Lock()
defer r.Unlock()
r.Stdout = originalStdout
r.Stderr = originalStderr
}()
// Set the writers for the output so that we get it streamed to us
if r.Stdout == nil {
r.Stdout = stdout_w
} else {
r.Stdout = io.MultiWriter(r.Stdout, stdout_w)
}
if r.Stderr == nil {
r.Stderr = stderr_w
} else {
r.Stderr = io.MultiWriter(r.Stderr, stderr_w)
}
// Start the command
if err := c.Start(r); err != nil {
return err
}
// Create the channels we'll use for data
exitCh := make(chan struct{})
stdoutCh := iochan.DelimReader(stdout_r, '\n')
stderrCh := iochan.DelimReader(stderr_r, '\n')
// Start the goroutine to watch for the exit
go func() {
defer close(exitCh)
defer stdout_w.Close()
defer stderr_w.Close()
r.Wait()
}()
// Loop and get all our output
OutputLoop:
for {
select {
case output := <-stderrCh:
if output != "" {
ui.Message(r.cleanOutputLine(output))
}
case output := <-stdoutCh:
if output != "" {
ui.Message(r.cleanOutputLine(output))
}
case <-exitCh:
break OutputLoop
}
}
// Make sure we finish off stdout/stderr because we may have gotten
// a message from the exit channel before finishing these first.
for output := range stdoutCh {
ui.Message(strings.TrimSpace(output))
}
for output := range stderrCh {
ui.Message(strings.TrimSpace(output))
}
return nil
}
// StartWithUi runs the remote command and streams the output to any
// configured Writers for stdout/stderr, while also writing each line
// as it comes to a Ui.
func (r *RemoteCmd) StartWithUi(c Communicator, ui Ui) error {
stdout_r, stdout_w := io.Pipe()
stderr_r, stderr_w := io.Pipe()
defer stdout_w.Close()
defer stderr_w.Close()
// Set the writers for the output so that we get it streamed to us
if r.Stdout == nil {
r.Stdout = stdout_w
} else {
r.Stdout = io.MultiWriter(r.Stdout, stdout_w)
}
if r.Stderr == nil {
r.Stderr = stderr_w
} else {
r.Stderr = io.MultiWriter(r.Stderr, stderr_w)
}
// Start the command
if err := c.Start(r); err != nil {
return err
}
// Create the channels we'll use for data
exitCh := make(chan int, 1)
stdoutCh := iochan.DelimReader(stdout_r, '\n')
stderrCh := iochan.DelimReader(stderr_r, '\n')
// Start the goroutine to watch for the exit
go func() {
defer stdout_w.Close()
defer stderr_w.Close()
r.Wait()
exitCh <- r.ExitStatus
}()
// Loop and get all our output
OutputLoop:
for {
select {
case output := <-stderrCh:
ui.Message(strings.TrimSpace(output))
case output := <-stdoutCh:
ui.Message(strings.TrimSpace(output))
case <-exitCh:
break OutputLoop
}
}
// Make sure we finish off stdout/stderr because we may have gotten
// a message from the exit channel before finishing these first.
for output := range stdoutCh {
ui.Message(strings.TrimSpace(output))
}
for output := range stderrCh {
ui.Message(strings.TrimSpace(output))
}
return nil
}