packer-cn/post-processor/yandex-import/post-processor.go

220 lines
6.9 KiB
Go

//go:generate struct-markdown
//go:generate mapstructure-to-hcl2 -type Config
package yandeximport
import (
"context"
"fmt"
"github.com/hashicorp/hcl/v2/hcldec"
"github.com/hashicorp/packer-plugin-sdk/common"
packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
"github.com/hashicorp/packer-plugin-sdk/template/config"
"github.com/hashicorp/packer-plugin-sdk/template/interpolate"
"github.com/hashicorp/packer/builder/file"
"github.com/hashicorp/packer/builder/yandex"
"github.com/hashicorp/packer/post-processor/artifice"
"github.com/hashicorp/packer/post-processor/compress"
yandexexport "github.com/hashicorp/packer/post-processor/yandex-export"
"github.com/yandex-cloud/go-genproto/yandex/cloud/iam/v1/awscompatibility"
)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
yandex.AccessConfig `mapstructure:",squash"`
yandex.CloudConfig `mapstructure:",squash"`
yandexexport.ExchangeConfig `mapstructure:",squash"`
yandex.ImageConfig `mapstructure:",squash"`
// The name of the bucket where the qcow2 file will be uploaded to for import.
// This bucket must exist when the post-processor is run.
//
// If import occurred after Yandex-Export post-processor, artifact already
// in storage service and first paths (URL) is used to, so no need to set this param.
Bucket string `mapstructure:"bucket" required:"false"`
// The name of the object key in `bucket` where the qcow2 file will be copied to import.
// This is a [template engine](/docs/templates/engine).
// Therefore, you may use user variables and template functions in this field.
ObjectName string `mapstructure:"object_name" required:"false"`
// Whether skip removing the qcow2 file uploaded to Storage
// after the import process has completed. Possible values are: `true` to
// leave it in the bucket, `false` to remove it. Default is `false`.
SkipClean bool `mapstructure:"skip_clean" required:"false"`
ctx interpolate.Context
}
type PostProcessor struct {
config Config
}
func (p *PostProcessor) ConfigSpec() hcldec.ObjectSpec { return p.config.FlatMapstructure().HCL2Spec() }
func (p *PostProcessor) Configure(raws ...interface{}) error {
err := config.Decode(&p.config, &config.DecodeOpts{
PluginType: BuilderId,
Interpolate: true,
InterpolateContext: &p.config.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"object_name",
},
},
}, raws...)
if err != nil {
return err
}
// Accumulate any errors
var errs *packersdk.MultiError
errs = packersdk.MultiErrorAppend(errs, p.config.AccessConfig.Prepare(&p.config.ctx)...)
errs = p.config.CloudConfig.Prepare(errs)
errs = p.config.ImageConfig.Prepare(errs)
errs = p.config.ExchangeConfig.Prepare(errs)
// Set defaults
if p.config.ObjectName == "" {
p.config.ObjectName = "packer-import-{{timestamp}}.qcow2"
}
// Check and render object_name
if err = interpolate.Validate(p.config.ObjectName, &p.config.ctx); err != nil {
errs = packersdk.MultiErrorAppend(
errs, fmt.Errorf("error parsing object_name template: %s", err))
}
if len(errs.Errors) > 0 {
return errs
}
return nil
}
func (p *PostProcessor) PostProcess(ctx context.Context, ui packersdk.Ui, artifact packersdk.Artifact) (packersdk.Artifact, bool, bool, error) {
var imageSrc cloudImageSource
var fileSource bool
var err error
generatedData := artifact.State("generated_data")
if generatedData == nil {
// Make sure it's not a nil map so we can assign to it later.
generatedData = make(map[string]interface{})
}
p.config.ctx.Data = generatedData
p.config.ObjectName, err = interpolate.Render(p.config.ObjectName, &p.config.ctx)
if err != nil {
return nil, false, false, fmt.Errorf("error rendering object_name template: %s", err)
}
client, err := yandex.NewDriverYC(ui, &p.config.AccessConfig)
if err != nil {
return nil, false, false, err
}
// Create temporary storage Access Key
respWithKey, err := client.SDK().IAM().AWSCompatibility().AccessKey().Create(ctx, &awscompatibility.CreateAccessKeyRequest{
ServiceAccountId: p.config.ServiceAccountID,
Description: "this temporary key is for upload image to storage; created by Packer",
})
if err != nil {
return nil, false, false, err
}
storageClient, err := newYCStorageClient("", respWithKey.GetAccessKey().GetKeyId(), respWithKey.GetSecret())
if err != nil {
return nil, false, false, fmt.Errorf("error create object storage client: %s", err)
}
switch artifact.BuilderId() {
case compress.BuilderId, artifice.BuilderId, file.BuilderId:
// Artifact as a file, need to be uploaded to storage before create Compute Image
fileSource = true
// As `bucket` option validate input here
if p.config.Bucket == "" {
return nil, false, false, fmt.Errorf("To upload artfact you need to specify `bucket` value")
}
imageSrc, err = uploadToBucket(storageClient, ui, artifact, p.config.Bucket, p.config.ObjectName)
if err != nil {
return nil, false, false, err
}
case yandexexport.BuilderId:
// Artifact already in storage, just get URL
imageSrc, err = presignUrl(storageClient, ui, artifact.Id())
if err != nil {
return nil, false, false, err
}
case yandex.BuilderID:
// Artifact is plain Yandex Compute Image, just create new one based on provided
imageSrc = &imageSource{
imageID: artifact.Id(),
}
case BuilderId:
// Artifact from prev yandex-import PP, reuse URL or Cloud Image ID
imageSrc, err = chooseSource(artifact)
if err != nil {
return nil, false, false, err
}
default:
err := fmt.Errorf(
"Unknown artifact type: %s\nCan only import from Yandex-Export, Yandex-Import, Compress, Artifice and File post-processor artifacts.",
artifact.BuilderId())
return nil, false, false, err
}
ycImage, err := createYCImage(ctx, client, ui, imageSrc, &p.config)
if err != nil {
return nil, false, false, err
}
if fileSource && !p.config.SkipClean {
err = deleteFromBucket(storageClient, ui, imageSrc)
if err != nil {
return nil, false, false, err
}
}
// Delete temporary storage Access Key
_, err = client.SDK().IAM().AWSCompatibility().AccessKey().Delete(ctx, &awscompatibility.DeleteAccessKeyRequest{
AccessKeyId: respWithKey.GetAccessKey().GetId(),
})
if err != nil {
return nil, false, false, fmt.Errorf("error delete static access key: %s", err)
}
return &Artifact{
imageID: ycImage.GetId(),
StateData: map[string]interface{}{
"source_type": imageSrc.GetSourceType(),
"source_id": imageSrc.GetSourceID(),
},
}, false, false, nil
}
func chooseSource(a packersdk.Artifact) (cloudImageSource, error) {
st := a.State("source_type").(string)
if st == "" {
return nil, fmt.Errorf("could not determine source type of yandex-import artifact: %v", a)
}
switch st {
case sourceType_IMAGE:
return &imageSource{
imageID: a.State("source_id").(string),
}, nil
case sourceType_OBJECT:
return &objectSource{
url: a.State("source_id").(string),
}, nil
}
return nil, fmt.Errorf("unknow source type of yandex-import artifact: %s", st)
}