packer-cn/builder/hyperv/iso/builder.go

383 lines
13 KiB
Go

//go:generate struct-markdown
//go:generate mapstructure-to-hcl2 -type Config
package iso
import (
"context"
"errors"
"fmt"
"log"
"path/filepath"
"strings"
"github.com/hashicorp/hcl/v2/hcldec"
hypervcommon "github.com/hashicorp/packer/builder/hyperv/common"
"github.com/hashicorp/packer/packer-plugin-sdk/bootcommand"
"github.com/hashicorp/packer/packer-plugin-sdk/common"
"github.com/hashicorp/packer/packer-plugin-sdk/communicator"
"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
"github.com/hashicorp/packer/packer-plugin-sdk/multistep/commonsteps"
packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
"github.com/hashicorp/packer/packer-plugin-sdk/shutdowncommand"
"github.com/hashicorp/packer/packer-plugin-sdk/template/config"
"github.com/hashicorp/packer/packer-plugin-sdk/template/interpolate"
)
const (
DefaultDiskSize = 40 * 1024 // ~40GB
MinDiskSize = 256 // 256MB
MaxDiskSize = 64 * 1024 * 1024 // 64TB
MaxVHDSize = 2040 * 1024 // 2040GB
DefaultDiskBlockSize = 32 // 32MB
MinDiskBlockSize = 1 // 1MB
MaxDiskBlockSize = 256 // 256MB
DefaultRamSize = 1 * 1024 // 1GB
MinRamSize = 32 // 32MB
MaxRamSize = 32 * 1024 // 32GB
MinNestedVirtualizationRamSize = 4 * 1024 // 4GB
LowRam = 256 // 256MB
DefaultUsername = ""
DefaultPassword = ""
)
// Builder implements packersdk.Builder and builds the actual Hyperv
// images.
type Builder struct {
config Config
runner multistep.Runner
}
type Config struct {
common.PackerConfig `mapstructure:",squash"`
commonsteps.HTTPConfig `mapstructure:",squash"`
commonsteps.ISOConfig `mapstructure:",squash"`
bootcommand.BootConfig `mapstructure:",squash"`
hypervcommon.OutputConfig `mapstructure:",squash"`
hypervcommon.SSHConfig `mapstructure:",squash"`
hypervcommon.CommonConfig `mapstructure:",squash"`
shutdowncommand.ShutdownConfig `mapstructure:",squash"`
// The size, in megabytes, of the hard disk to create
// for the VM. By default, this is 40 GB.
DiskSize uint `mapstructure:"disk_size" required:"false"`
// If true use a legacy network adapter as the NIC.
// This defaults to false. A legacy network adapter is fully emulated NIC, and is thus
// supported by various exotic operating systems, but this emulation requires
// additional overhead and should only be used if absolutely necessary.
UseLegacyNetworkAdapter bool `mapstructure:"use_legacy_network_adapter" required:"false"`
// If true enables differencing disks. Only
// the changes will be written to the new disk. This is especially useful if
// your source is a VHD/VHDX. This defaults to false.
DifferencingDisk bool `mapstructure:"differencing_disk" required:"false"`
// If true, creates the boot disk on the
// virtual machine as a fixed VHD format disk. The default is false, which
// creates a dynamic VHDX format disk. This option requires setting
// generation to 1, skip_compaction to true, and
// differencing_disk to false. Additionally, any value entered for
// disk_block_size will be ignored. The most likely use case for this
// option is outputing a disk that is in the format required for upload to
// Azure.
FixedVHD bool `mapstructure:"use_fixed_vhd_format" required:"false"`
ctx interpolate.Context
}
func (b *Builder) ConfigSpec() hcldec.ObjectSpec { return b.config.FlatMapstructure().HCL2Spec() }
func (b *Builder) Prepare(raws ...interface{}) ([]string, []string, error) {
err := config.Decode(&b.config, &config.DecodeOpts{
PluginType: hypervcommon.BuilderId,
Interpolate: true,
InterpolateContext: &b.config.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"boot_command",
},
},
}, raws...)
if err != nil {
return nil, nil, err
}
// Accumulate any errors and warnings
var errs *packersdk.MultiError
warnings := make([]string, 0)
isoWarnings, isoErrs := b.config.ISOConfig.Prepare(&b.config.ctx)
warnings = append(warnings, isoWarnings...)
errs = packersdk.MultiErrorAppend(errs, isoErrs...)
errs = packersdk.MultiErrorAppend(errs, b.config.BootConfig.Prepare(&b.config.ctx)...)
errs = packersdk.MultiErrorAppend(errs, b.config.HTTPConfig.Prepare(&b.config.ctx)...)
errs = packersdk.MultiErrorAppend(errs, b.config.OutputConfig.Prepare(&b.config.ctx, &b.config.PackerConfig)...)
errs = packersdk.MultiErrorAppend(errs, b.config.SSHConfig.Prepare(&b.config.ctx)...)
errs = packersdk.MultiErrorAppend(errs, b.config.ShutdownConfig.Prepare(&b.config.ctx)...)
commonErrs, commonWarns := b.config.CommonConfig.Prepare(&b.config.ctx, &b.config.PackerConfig)
errs = packersdk.MultiErrorAppend(errs, commonErrs...)
warnings = append(warnings, commonWarns...)
if len(b.config.ISOConfig.ISOUrls) < 1 ||
(strings.ToLower(filepath.Ext(b.config.ISOConfig.ISOUrls[0])) != ".vhd" &&
strings.ToLower(filepath.Ext(b.config.ISOConfig.ISOUrls[0])) != ".vhdx") {
//We only create a new hard drive if an existing one to copy from does not exist
err = b.checkDiskSize()
if err != nil {
errs = packersdk.MultiErrorAppend(errs, err)
}
}
if b.config.Cpu < 1 {
b.config.Cpu = 1
}
if b.config.Generation == 2 {
if b.config.UseLegacyNetworkAdapter {
err = errors.New("Generation 2 vms don't support legacy network adapters.")
errs = packersdk.MultiErrorAppend(errs, err)
}
}
// Errors
if b.config.Generation > 1 && b.config.FixedVHD {
err = errors.New("Fixed VHD disks are only supported on Generation 1 virtual machines.")
errs = packersdk.MultiErrorAppend(errs, err)
}
if !b.config.SkipCompaction && b.config.FixedVHD {
err = errors.New("Fixed VHD disks do not support compaction.")
errs = packersdk.MultiErrorAppend(errs, err)
}
if b.config.DifferencingDisk && b.config.FixedVHD {
err = errors.New("Fixed VHD disks are not supported with differencing disks.")
errs = packersdk.MultiErrorAppend(errs, err)
}
// Warnings
if b.config.ShutdownCommand == "" {
warnings = append(warnings,
"A shutdown_command was not specified. Without a shutdown command, Packer\n"+
"will forcibly halt the virtual machine, which may result in data loss.")
}
if errs != nil && len(errs.Errors) > 0 {
return nil, warnings, errs
}
return nil, warnings, nil
}
// Run executes a Packer build and returns a packersdk.Artifact representing
// a Hyperv appliance.
func (b *Builder) Run(ctx context.Context, ui packersdk.Ui, hook packersdk.Hook) (packersdk.Artifact, error) {
// Create the driver that we'll use to communicate with Hyperv
driver, err := hypervcommon.NewHypervPS4Driver()
if err != nil {
return nil, fmt.Errorf("Failed creating Hyper-V driver: %s", err)
}
// Set up the state.
state := new(multistep.BasicStateBag)
state.Put("debug", b.config.PackerDebug)
state.Put("driver", driver)
state.Put("hook", hook)
state.Put("ui", ui)
steps := []multistep.Step{
&hypervcommon.StepCreateBuildDir{
TempPath: b.config.TempPath,
},
&commonsteps.StepOutputDir{
Force: b.config.PackerForce,
Path: b.config.OutputDir,
},
&commonsteps.StepDownload{
Checksum: b.config.ISOChecksum,
Description: "ISO",
ResultKey: "iso_path",
Url: b.config.ISOUrls,
Extension: b.config.TargetExtension,
TargetPath: b.config.TargetPath,
},
&commonsteps.StepCreateFloppy{
Files: b.config.FloppyConfig.FloppyFiles,
Directories: b.config.FloppyConfig.FloppyDirectories,
Label: b.config.FloppyConfig.FloppyLabel,
},
&commonsteps.StepHTTPServer{
HTTPDir: b.config.HTTPDir,
HTTPPortMin: b.config.HTTPPortMin,
HTTPPortMax: b.config.HTTPPortMax,
HTTPAddress: b.config.HTTPAddress,
},
&hypervcommon.StepCreateSwitch{
SwitchName: b.config.SwitchName,
},
&hypervcommon.StepCreateVM{
VMName: b.config.VMName,
SwitchName: b.config.SwitchName,
RamSize: b.config.RamSize,
DiskSize: b.config.DiskSize,
DiskBlockSize: b.config.DiskBlockSize,
Generation: b.config.Generation,
Cpu: b.config.Cpu,
EnableMacSpoofing: b.config.EnableMacSpoofing,
EnableDynamicMemory: b.config.EnableDynamicMemory,
EnableSecureBoot: b.config.EnableSecureBoot,
SecureBootTemplate: b.config.SecureBootTemplate,
EnableVirtualizationExtensions: b.config.EnableVirtualizationExtensions,
UseLegacyNetworkAdapter: b.config.UseLegacyNetworkAdapter,
AdditionalDiskSize: b.config.AdditionalDiskSize,
DifferencingDisk: b.config.DifferencingDisk,
MacAddress: b.config.MacAddress,
FixedVHD: b.config.FixedVHD,
Version: b.config.Version,
KeepRegistered: b.config.KeepRegistered,
},
&hypervcommon.StepEnableIntegrationService{},
&hypervcommon.StepMountDvdDrive{
Generation: b.config.Generation,
FirstBootDevice: b.config.FirstBootDevice,
},
&hypervcommon.StepMountFloppydrive{
Generation: b.config.Generation,
},
&hypervcommon.StepMountGuestAdditions{
GuestAdditionsMode: b.config.GuestAdditionsMode,
GuestAdditionsPath: b.config.GuestAdditionsPath,
Generation: b.config.Generation,
},
&commonsteps.StepCreateCD{
Files: b.config.CDConfig.CDFiles,
Label: b.config.CDConfig.CDLabel,
},
&hypervcommon.StepMountSecondaryDvdImages{
IsoPaths: b.config.SecondaryDvdImages,
Generation: b.config.Generation,
},
&hypervcommon.StepConfigureVlan{
VlanId: b.config.VlanId,
SwitchVlanId: b.config.SwitchVlanId,
},
&hypervcommon.StepSetBootOrder{
BootOrder: b.config.BootOrder,
},
&hypervcommon.StepSetFirstBootDevice{
Generation: b.config.Generation,
FirstBootDevice: b.config.FirstBootDevice,
},
&hypervcommon.StepRun{
Headless: b.config.Headless,
SwitchName: b.config.SwitchName,
},
&hypervcommon.StepTypeBootCommand{
BootCommand: b.config.FlatBootCommand(),
BootWait: b.config.BootWait,
SwitchName: b.config.SwitchName,
Ctx: b.config.ctx,
GroupInterval: b.config.BootConfig.BootGroupInterval,
},
// configure the communicator ssh, winrm
&communicator.StepConnect{
Config: &b.config.SSHConfig.Comm,
Host: hypervcommon.CommHost(b.config.SSHConfig.Comm.SSHHost),
SSHConfig: b.config.SSHConfig.Comm.SSHConfigFunc(),
},
// provision requires communicator to be setup
&commonsteps.StepProvision{},
// Remove ephemeral key from authorized_hosts if using SSH communicator
&commonsteps.StepCleanupTempKeys{
Comm: &b.config.SSHConfig.Comm,
},
&hypervcommon.StepShutdown{
Command: b.config.ShutdownCommand,
Timeout: b.config.ShutdownTimeout,
},
// wait for the vm to be powered off
&hypervcommon.StepWaitForPowerOff{},
// remove the secondary dvd images
// after we power down
&hypervcommon.StepUnmountSecondaryDvdImages{},
&hypervcommon.StepUnmountGuestAdditions{},
&hypervcommon.StepUnmountDvdDrive{},
&hypervcommon.StepUnmountFloppyDrive{
Generation: b.config.Generation,
},
&hypervcommon.StepCompactDisk{
SkipCompaction: b.config.SkipCompaction,
},
&hypervcommon.StepExportVm{
OutputDir: b.config.OutputDir,
SkipExport: b.config.SkipExport,
},
&hypervcommon.StepCollateArtifacts{
OutputDir: b.config.OutputDir,
SkipExport: b.config.SkipExport,
},
// the clean up actions for each step will be executed reverse order
}
// Run the steps.
b.runner = commonsteps.NewRunner(steps, b.config.PackerConfig, ui)
b.runner.Run(ctx, state)
// Report any errors.
if rawErr, ok := state.GetOk("error"); ok {
return nil, rawErr.(error)
}
// If we were interrupted or cancelled, then just exit.
if _, ok := state.GetOk(multistep.StateCancelled); ok {
return nil, errors.New("Build was cancelled.")
}
if _, ok := state.GetOk(multistep.StateHalted); ok {
return nil, errors.New("Build was halted.")
}
generatedData := map[string]interface{}{"generated_data": state.Get("generated_data")}
return hypervcommon.NewArtifact(b.config.OutputDir, generatedData)
}
// Cancel.
func (b *Builder) checkDiskSize() error {
if b.config.DiskSize == 0 {
b.config.DiskSize = DefaultDiskSize
}
log.Println(fmt.Sprintf("%s: %v", "DiskSize", b.config.DiskSize))
if b.config.DiskSize < MinDiskSize {
return fmt.Errorf("disk_size: Virtual machine requires disk space >= %v GB, but defined: %v",
MinDiskSize, b.config.DiskSize/1024)
} else if b.config.DiskSize > MaxDiskSize && !b.config.FixedVHD {
return fmt.Errorf("disk_size: Virtual machine requires disk space <= %v GB, but defined: %v",
MaxDiskSize, b.config.DiskSize/1024)
} else if b.config.DiskSize > MaxVHDSize && b.config.FixedVHD {
return fmt.Errorf("disk_size: Virtual machine requires disk space <= %v GB, but defined: %v",
MaxVHDSize/1024, b.config.DiskSize/1024)
}
return nil
}