502 lines
13 KiB
Go
502 lines
13 KiB
Go
package qemu
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import (
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"errors"
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/common"
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"github.com/mitchellh/packer/packer"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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)
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const BuilderId = "transcend.qemu"
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var netDevice = map[string]bool{
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"ne2k_pci": true,
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"i82551": true,
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"i82557b": true,
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"i82559er": true,
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"rtl8139": true,
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"e1000": true,
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"pcnet": true,
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"virtio": true,
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"virtio-net": true,
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"usb-net": true,
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"i82559a": true,
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"i82559b": true,
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"i82559c": true,
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"i82550": true,
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"i82562": true,
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"i82557a": true,
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"i82557c": true,
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"i82801": true,
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"vmxnet3": true,
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"i82558a": true,
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"i82558b": true,
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}
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var diskInterface = map[string]bool{
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"ide": true,
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"scsi": true,
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"virtio": true,
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}
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type Builder struct {
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config config
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runner multistep.Runner
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}
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type config struct {
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common.PackerConfig `mapstructure:",squash"`
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Accelerator string `mapstructure:"accelerator"`
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BootCommand []string `mapstructure:"boot_command"`
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DiskInterface string `mapstructure:"disk_interface"`
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DiskSize uint `mapstructure:"disk_size"`
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FloppyFiles []string `mapstructure:"floppy_files"`
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Format string `mapstructure:"format"`
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Headless bool `mapstructure:"headless"`
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HTTPDir string `mapstructure:"http_directory"`
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HTTPPortMin uint `mapstructure:"http_port_min"`
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HTTPPortMax uint `mapstructure:"http_port_max"`
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ISOChecksum string `mapstructure:"iso_checksum"`
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ISOChecksumType string `mapstructure:"iso_checksum_type"`
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ISOUrls []string `mapstructure:"iso_urls"`
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NetDevice string `mapstructure:"net_device"`
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OutputDir string `mapstructure:"output_directory"`
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QemuArgs [][]string `mapstructure:"qemuargs"`
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QemuBinary string `mapstructure:"qemu_binary"`
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ShutdownCommand string `mapstructure:"shutdown_command"`
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SSHHostPortMin uint `mapstructure:"ssh_host_port_min"`
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SSHHostPortMax uint `mapstructure:"ssh_host_port_max"`
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SSHPassword string `mapstructure:"ssh_password"`
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SSHPort uint `mapstructure:"ssh_port"`
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SSHUser string `mapstructure:"ssh_username"`
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SSHKeyPath string `mapstructure:"ssh_key_path"`
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VNCPortMin uint `mapstructure:"vnc_port_min"`
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VNCPortMax uint `mapstructure:"vnc_port_max"`
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VMName string `mapstructure:"vm_name"`
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// TODO(mitchellh): deprecate
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RunOnce bool `mapstructure:"run_once"`
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RawBootWait string `mapstructure:"boot_wait"`
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RawSingleISOUrl string `mapstructure:"iso_url"`
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RawShutdownTimeout string `mapstructure:"shutdown_timeout"`
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RawSSHWaitTimeout string `mapstructure:"ssh_wait_timeout"`
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bootWait time.Duration ``
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shutdownTimeout time.Duration ``
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sshWaitTimeout time.Duration ``
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tpl *packer.ConfigTemplate
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}
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func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
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md, err := common.DecodeConfig(&b.config, raws...)
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if err != nil {
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return nil, err
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}
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b.config.tpl, err = packer.NewConfigTemplate()
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if err != nil {
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return nil, err
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}
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b.config.tpl.UserVars = b.config.PackerUserVars
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// Accumulate any errors
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errs := common.CheckUnusedConfig(md)
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if b.config.DiskSize == 0 {
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b.config.DiskSize = 40000
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}
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if b.config.Accelerator == "" {
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b.config.Accelerator = "kvm"
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}
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if b.config.HTTPPortMin == 0 {
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b.config.HTTPPortMin = 8000
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}
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if b.config.HTTPPortMax == 0 {
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b.config.HTTPPortMax = 9000
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}
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if b.config.OutputDir == "" {
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b.config.OutputDir = fmt.Sprintf("output-%s", b.config.PackerBuildName)
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}
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if b.config.QemuBinary == "" {
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b.config.QemuBinary = "qemu-system-x86_64"
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}
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if b.config.RawBootWait == "" {
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b.config.RawBootWait = "10s"
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}
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if b.config.SSHHostPortMin == 0 {
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b.config.SSHHostPortMin = 2222
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}
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if b.config.SSHHostPortMax == 0 {
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b.config.SSHHostPortMax = 4444
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}
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if b.config.SSHPort == 0 {
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b.config.SSHPort = 22
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}
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if b.config.VNCPortMin == 0 {
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b.config.VNCPortMin = 5900
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}
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if b.config.VNCPortMax == 0 {
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b.config.VNCPortMax = 6000
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}
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for i, args := range b.config.QemuArgs {
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for j, arg := range args {
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if err := b.config.tpl.Validate(arg); err != nil {
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errs = packer.MultiErrorAppend(errs,
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fmt.Errorf("Error processing qemu-system_x86-64[%d][%d]: %s", i, j, err))
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}
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}
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}
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if b.config.VMName == "" {
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b.config.VMName = fmt.Sprintf("packer-%s", b.config.PackerBuildName)
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}
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if b.config.Format == "" {
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b.config.Format = "qcow2"
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}
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if b.config.FloppyFiles == nil {
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b.config.FloppyFiles = make([]string, 0)
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}
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if b.config.NetDevice == "" {
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b.config.NetDevice = "virtio-net"
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}
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if b.config.DiskInterface == "" {
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b.config.DiskInterface = "virtio"
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}
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// Errors
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templates := map[string]*string{
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"http_directory": &b.config.HTTPDir,
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"iso_checksum": &b.config.ISOChecksum,
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"iso_checksum_type": &b.config.ISOChecksumType,
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"iso_url": &b.config.RawSingleISOUrl,
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"output_directory": &b.config.OutputDir,
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"shutdown_command": &b.config.ShutdownCommand,
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"ssh_password": &b.config.SSHPassword,
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"ssh_username": &b.config.SSHUser,
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"vm_name": &b.config.VMName,
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"format": &b.config.Format,
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"boot_wait": &b.config.RawBootWait,
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"shutdown_timeout": &b.config.RawShutdownTimeout,
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"ssh_wait_timeout": &b.config.RawSSHWaitTimeout,
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"accelerator": &b.config.Accelerator,
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"net_device": &b.config.NetDevice,
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"disk_interface": &b.config.DiskInterface,
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}
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for n, ptr := range templates {
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var err error
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*ptr, err = b.config.tpl.Process(*ptr, nil)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Error processing %s: %s", n, err))
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}
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}
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for i, url := range b.config.ISOUrls {
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var err error
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b.config.ISOUrls[i], err = b.config.tpl.Process(url, nil)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Error processing iso_urls[%d]: %s", i, err))
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}
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}
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for i, command := range b.config.BootCommand {
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if err := b.config.tpl.Validate(command); err != nil {
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errs = packer.MultiErrorAppend(errs,
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fmt.Errorf("Error processing boot_command[%d]: %s", i, err))
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}
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}
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for i, file := range b.config.FloppyFiles {
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var err error
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b.config.FloppyFiles[i], err = b.config.tpl.Process(file, nil)
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if err != nil {
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errs = packer.MultiErrorAppend(errs,
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fmt.Errorf("Error processing floppy_files[%d]: %s",
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i, err))
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}
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}
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if !(b.config.Format == "qcow2" || b.config.Format == "raw") {
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errs = packer.MultiErrorAppend(
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errs, errors.New("invalid format, only 'qcow2' or 'raw' are allowed"))
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}
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if !(b.config.Accelerator == "kvm" || b.config.Accelerator == "xen") {
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errs = packer.MultiErrorAppend(
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errs, errors.New("invalid format, only 'kvm' or 'xen' are allowed"))
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}
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if _, ok := netDevice[b.config.NetDevice]; !ok {
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errs = packer.MultiErrorAppend(
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errs, errors.New("unrecognized network device type"))
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}
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if _, ok := diskInterface[b.config.DiskInterface]; !ok {
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errs = packer.MultiErrorAppend(
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errs, errors.New("unrecognized disk interface type"))
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}
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if b.config.HTTPPortMin > b.config.HTTPPortMax {
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errs = packer.MultiErrorAppend(
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errs, errors.New("http_port_min must be less than http_port_max"))
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}
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if b.config.ISOChecksum == "" {
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errs = packer.MultiErrorAppend(
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errs, errors.New("Due to large file sizes, an iso_checksum is required"))
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} else {
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b.config.ISOChecksum = strings.ToLower(b.config.ISOChecksum)
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}
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if b.config.ISOChecksumType == "" {
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errs = packer.MultiErrorAppend(
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errs, errors.New("The iso_checksum_type must be specified."))
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} else {
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b.config.ISOChecksumType = strings.ToLower(b.config.ISOChecksumType)
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if h := common.HashForType(b.config.ISOChecksumType); h == nil {
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errs = packer.MultiErrorAppend(
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errs,
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fmt.Errorf("Unsupported checksum type: %s", b.config.ISOChecksumType))
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}
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}
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if b.config.RawSingleISOUrl == "" && len(b.config.ISOUrls) == 0 {
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errs = packer.MultiErrorAppend(
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errs, errors.New("One of iso_url or iso_urls must be specified."))
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} else if b.config.RawSingleISOUrl != "" && len(b.config.ISOUrls) > 0 {
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errs = packer.MultiErrorAppend(
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errs, errors.New("Only one of iso_url or iso_urls may be specified."))
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} else if b.config.RawSingleISOUrl != "" {
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b.config.ISOUrls = []string{b.config.RawSingleISOUrl}
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}
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for i, url := range b.config.ISOUrls {
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b.config.ISOUrls[i], err = common.DownloadableURL(url)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Failed to parse iso_url %d: %s", i+1, err))
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}
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}
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if !b.config.PackerForce {
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if _, err := os.Stat(b.config.OutputDir); err == nil {
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errs = packer.MultiErrorAppend(
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errs,
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fmt.Errorf("Output directory '%s' already exists. It must not exist.", b.config.OutputDir))
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}
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}
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b.config.bootWait, err = time.ParseDuration(b.config.RawBootWait)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Failed parsing boot_wait: %s", err))
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}
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if b.config.RawShutdownTimeout == "" {
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b.config.RawShutdownTimeout = "5m"
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}
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if b.config.RawSSHWaitTimeout == "" {
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b.config.RawSSHWaitTimeout = "20m"
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}
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b.config.shutdownTimeout, err = time.ParseDuration(b.config.RawShutdownTimeout)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Failed parsing shutdown_timeout: %s", err))
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}
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if b.config.SSHKeyPath != "" {
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if _, err := os.Stat(b.config.SSHKeyPath); err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
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} else if _, err := sshKeyToKeyring(b.config.SSHKeyPath); err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
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}
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}
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if b.config.SSHHostPortMin > b.config.SSHHostPortMax {
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errs = packer.MultiErrorAppend(
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errs, errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
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}
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if b.config.SSHUser == "" {
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errs = packer.MultiErrorAppend(
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errs, errors.New("An ssh_username must be specified."))
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}
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b.config.sshWaitTimeout, err = time.ParseDuration(b.config.RawSSHWaitTimeout)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Failed parsing ssh_wait_timeout: %s", err))
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}
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if b.config.VNCPortMin > b.config.VNCPortMax {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("vnc_port_min must be less than vnc_port_max"))
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}
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if b.config.QemuArgs == nil {
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b.config.QemuArgs = make([][]string, 0)
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}
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if errs != nil && len(errs.Errors) > 0 {
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return nil, errs
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}
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return nil, nil
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}
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func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
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// Create the driver that we'll use to communicate with Qemu
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driver, err := b.newDriver(b.config.QemuBinary)
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if err != nil {
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return nil, fmt.Errorf("Failed creating Qemu driver: %s", err)
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}
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steps := []multistep.Step{
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&common.StepDownload{
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Checksum: b.config.ISOChecksum,
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ChecksumType: b.config.ISOChecksumType,
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Description: "ISO",
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ResultKey: "iso_path",
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Url: b.config.ISOUrls,
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},
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new(stepPrepareOutputDir),
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&common.StepCreateFloppy{
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Files: b.config.FloppyFiles,
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},
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new(stepCreateDisk),
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new(stepHTTPServer),
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new(stepForwardSSH),
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new(stepConfigureVNC),
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&stepRun{
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BootDrive: "once=d",
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Message: "Starting VM, booting from CD-ROM",
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},
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&stepBootWait{},
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&stepTypeBootCommand{},
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&common.StepConnectSSH{
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SSHAddress: sshAddress,
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SSHConfig: sshConfig,
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SSHWaitTimeout: b.config.sshWaitTimeout,
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},
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new(common.StepProvision),
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new(stepShutdown),
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}
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// Setup the state bag
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state := new(multistep.BasicStateBag)
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state.Put("cache", cache)
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state.Put("config", &b.config)
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state.Put("driver", driver)
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state.Put("hook", hook)
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state.Put("ui", ui)
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// Run
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if b.config.PackerDebug {
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b.runner = &multistep.DebugRunner{
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Steps: steps,
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PauseFn: common.MultistepDebugFn(ui),
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}
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} else {
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b.runner = &multistep.BasicRunner{Steps: steps}
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}
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b.runner.Run(state)
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// If there was an error, return that
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if rawErr, ok := state.GetOk("error"); ok {
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return nil, rawErr.(error)
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}
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// If we were interrupted or cancelled, then just exit.
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if _, ok := state.GetOk(multistep.StateCancelled); ok {
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return nil, errors.New("Build was cancelled.")
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}
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if _, ok := state.GetOk(multistep.StateHalted); ok {
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return nil, errors.New("Build was halted.")
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}
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// Compile the artifact list
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files := make([]string, 0, 5)
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visit := func(path string, info os.FileInfo, err error) error {
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if !info.IsDir() {
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files = append(files, path)
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}
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return err
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}
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if err := filepath.Walk(b.config.OutputDir, visit); err != nil {
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return nil, err
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}
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artifact := &Artifact{
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dir: b.config.OutputDir,
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f: files,
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}
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return artifact, nil
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}
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func (b *Builder) Cancel() {
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if b.runner != nil {
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log.Println("Cancelling the step runner...")
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b.runner.Cancel()
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}
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}
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func (b *Builder) newDriver(qemuBinary string) (Driver, error) {
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qemuPath, err := exec.LookPath(qemuBinary)
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if err != nil {
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return nil, err
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}
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qemuImgPath, err := exec.LookPath("qemu-img")
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if err != nil {
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return nil, err
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}
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log.Printf("Qemu path: %s, Qemu Image page: %s", qemuPath, qemuImgPath)
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driver := &QemuDriver{
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QemuPath: qemuPath,
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QemuImgPath: qemuImgPath,
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}
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if err := driver.Verify(); err != nil {
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return nil, err
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}
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return driver, nil
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}
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