packer-cn/builder/qemu/step_run.go

255 lines
6.9 KiB
Go

package qemu
import (
"fmt"
"log"
"path/filepath"
"strconv"
"strings"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"github.com/mitchellh/packer/template/interpolate"
)
// stepRun runs the virtual machine
type stepRun struct {
BootDrive string
Message string
}
type qemuArgsTemplateData struct {
HTTPIP string
HTTPPort uint
HTTPDir string
OutputDir string
Name string
SSHHostPort uint
}
func (s *stepRun) Run(state multistep.StateBag) multistep.StepAction {
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
ui.Say(s.Message)
command, err := getCommandArgs(s.BootDrive, state)
if err != nil {
err := fmt.Errorf("Error processing QemuArgs: %s", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
if err := driver.Qemu(command...); err != nil {
err := fmt.Errorf("Error launching VM: %s", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
return multistep.ActionContinue
}
func (s *stepRun) Cleanup(state multistep.StateBag) {
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
if err := driver.Stop(); err != nil {
ui.Error(fmt.Sprintf("Error shutting down VM: %s", err))
}
}
func getCommandArgs(bootDrive string, state multistep.StateBag) ([]string, error) {
config := state.Get("config").(*Config)
isoPath := state.Get("iso_path").(string)
vncIP := state.Get("vnc_ip").(string)
vncPort := state.Get("vnc_port").(uint)
ui := state.Get("ui").(packer.Ui)
driver := state.Get("driver").(Driver)
vnc := fmt.Sprintf("%s:%d", vncIP, vncPort-5900)
vmName := config.VMName
imgPath := filepath.Join(config.OutputDir, vmName)
defaultArgs := make(map[string]interface{})
var deviceArgs []string
var driveArgs []string
var sshHostPort uint
defaultArgs["-name"] = vmName
defaultArgs["-machine"] = fmt.Sprintf("type=%s", config.MachineType)
if config.Comm.Type != "none" {
sshHostPort = state.Get("sshHostPort").(uint)
defaultArgs["-netdev"] = fmt.Sprintf("user,id=user.0,hostfwd=tcp::%v-:%d", sshHostPort, config.Comm.Port())
} else {
defaultArgs["-netdev"] = fmt.Sprintf("user,id=user.0")
}
qemuVersion, err := driver.Version()
if err != nil {
return nil, err
}
parts := strings.Split(qemuVersion, ".")
qemuMajor, err := strconv.Atoi(parts[0])
if err != nil {
return nil, err
}
if qemuMajor >= 2 {
if config.DiskInterface == "virtio-scsi" {
deviceArgs = append(deviceArgs, "virtio-scsi-pci,id=scsi0", "scsi-hd,bus=scsi0.0,drive=drive0")
driveArgs = append(driveArgs, fmt.Sprintf("if=none,file=%s,id=drive0,cache=%s,discard=%s,format=%s", imgPath, config.DiskCache, config.DiskDiscard, config.Format))
} else {
driveArgs = append(driveArgs, fmt.Sprintf("file=%s,if=%s,cache=%s,discard=%s,format=%s", imgPath, config.DiskInterface, config.DiskCache, config.DiskDiscard, config.Format))
}
} else {
driveArgs = append(driveArgs, fmt.Sprintf("file=%s,if=%s,cache=%s,format=%s", imgPath, config.DiskInterface, config.DiskCache, config.Format))
}
deviceArgs = append(deviceArgs, fmt.Sprintf("%s,netdev=user.0", config.NetDevice))
if config.Headless == true {
vncIpRaw, vncIpOk := state.GetOk("vnc_ip")
vncPortRaw, vncPortOk := state.GetOk("vnc_port")
if vncIpOk && vncPortOk {
vncIp := vncIpRaw.(string)
vncPort := vncPortRaw.(uint)
ui.Message(fmt.Sprintf(
"The VM will be run headless, without a GUI. If you want to\n"+
"view the screen of the VM, connect via VNC without a password to\n"+
"%s:%d", vncIp, vncPort))
} else {
ui.Message("The VM will be run headless, without a GUI, as configured.\n" +
"If the run isn't succeeding as you expect, please enable the GUI\n" +
"to inspect the progress of the build.")
}
} else {
if qemuMajor >= 2 {
if !config.UseDefaultDisplay {
defaultArgs["-display"] = "sdl"
}
} else {
ui.Message("WARNING: The version of qemu on your host doesn't support display mode.\n" +
"The display parameter will be ignored.")
}
}
defaultArgs["-device"] = deviceArgs
defaultArgs["-drive"] = driveArgs
if !config.DiskImage {
defaultArgs["-cdrom"] = isoPath
}
defaultArgs["-boot"] = bootDrive
defaultArgs["-m"] = "512M"
defaultArgs["-vnc"] = vnc
// Append the accelerator to the machine type if it is specified
if config.Accelerator != "none" {
defaultArgs["-machine"] = fmt.Sprintf("%s,accel=%s", defaultArgs["-machine"], config.Accelerator)
} else {
ui.Message("WARNING: The VM will be started with no hardware acceleration.\n" +
"The installation may take considerably longer to finish.\n")
}
// Determine if we have a floppy disk to attach
if floppyPathRaw, ok := state.GetOk("floppy_path"); ok {
defaultArgs["-fda"] = floppyPathRaw.(string)
} else {
log.Println("Qemu Builder has no floppy files, not attaching a floppy.")
}
inArgs := make(map[string][]string)
if len(config.QemuArgs) > 0 {
ui.Say("Overriding defaults Qemu arguments with QemuArgs...")
httpPort := state.Get("http_port").(uint)
ctx := config.ctx
if config.Comm.Type != "none" {
ctx.Data = qemuArgsTemplateData{
"10.0.2.2",
httpPort,
config.HTTPDir,
config.OutputDir,
config.VMName,
sshHostPort,
}
} else {
ctx.Data = qemuArgsTemplateData{
HTTPIP: "10.0.2.2",
HTTPPort: httpPort,
HTTPDir: config.HTTPDir,
OutputDir: config.OutputDir,
Name: config.VMName,
}
}
newQemuArgs, err := processArgs(config.QemuArgs, &ctx)
if err != nil {
return nil, err
}
// because qemu supports multiple appearances of the same
// switch, just different values, each key in the args hash
// will have an array of string values
for _, qemuArgs := range newQemuArgs {
key := qemuArgs[0]
val := strings.Join(qemuArgs[1:], "")
if _, ok := inArgs[key]; !ok {
inArgs[key] = make([]string, 0)
}
if len(val) > 0 {
inArgs[key] = append(inArgs[key], val)
}
}
}
// get any remaining missing default args from the default settings
for key := range defaultArgs {
if _, ok := inArgs[key]; !ok {
arg := make([]string, 1)
switch defaultArgs[key].(type) {
case string:
arg[0] = defaultArgs[key].(string)
case []string:
arg = defaultArgs[key].([]string)
}
inArgs[key] = arg
}
}
// Flatten to array of strings
outArgs := make([]string, 0)
for key, values := range inArgs {
if len(values) > 0 {
for idx := range values {
outArgs = append(outArgs, key, values[idx])
}
} else {
outArgs = append(outArgs, key)
}
}
return outArgs, nil
}
func processArgs(args [][]string, ctx *interpolate.Context) ([][]string, error) {
var err error
if args == nil {
return make([][]string, 0), err
}
newArgs := make([][]string, len(args))
for argsIdx, rowArgs := range args {
parms := make([]string, len(rowArgs))
newArgs[argsIdx] = parms
for i, parm := range rowArgs {
parms[i], err = interpolate.Render(parm, ctx)
if err != nil {
return nil, err
}
}
}
return newArgs, err
}