forked from moby/buildkit
/
export.go
159 lines (142 loc) · 3.66 KB
/
export.go
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package containerimage
import (
"context"
"strconv"
"strings"
"time"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/images"
"github.com/moby/buildkit/exporter"
"github.com/moby/buildkit/session"
"github.com/moby/buildkit/util/push"
"github.com/moby/buildkit/util/resolver"
"github.com/pkg/errors"
)
const (
keyImageName = "name"
keyPush = "push"
keyInsecure = "registry.insecure"
ociTypes = "oci-mediatypes"
)
type Opt struct {
SessionManager *session.Manager
ImageWriter *ImageWriter
Images images.Store
ResolverOpt resolver.ResolveOptionsFunc
}
type imageExporter struct {
opt Opt
}
// New returns a new containerimage exporter instance that supports exporting
// to an image store and pushing the image to registry.
// This exporter supports following values in returned kv map:
// - containerimage.digest - The digest of the root manifest for the image.
func New(opt Opt) (exporter.Exporter, error) {
im := &imageExporter{opt: opt}
return im, nil
}
func (e *imageExporter) Resolve(ctx context.Context, opt map[string]string) (exporter.ExporterInstance, error) {
i := &imageExporterInstance{imageExporter: e}
for k, v := range opt {
switch k {
case keyImageName:
i.targetName = v
case keyPush:
if v == "" {
i.push = true
continue
}
b, err := strconv.ParseBool(v)
if err != nil {
return nil, errors.Wrapf(err, "non-bool value specified for %s", k)
}
i.push = b
case keyInsecure:
if v == "" {
i.insecure = true
continue
}
b, err := strconv.ParseBool(v)
if err != nil {
return nil, errors.Wrapf(err, "non-bool value specified for %s", k)
}
i.insecure = b
case ociTypes:
if v == "" {
i.ociTypes = true
continue
}
b, err := strconv.ParseBool(v)
if err != nil {
return nil, errors.Wrapf(err, "non-bool value specified for %s", k)
}
i.ociTypes = b
default:
if i.meta == nil {
i.meta = make(map[string][]byte)
}
i.meta[k] = []byte(v)
}
}
return i, nil
}
type imageExporterInstance struct {
*imageExporter
targetName string
push bool
insecure bool
ociTypes bool
meta map[string][]byte
}
func (e *imageExporterInstance) Name() string {
return "exporting to image"
}
func (e *imageExporterInstance) Export(ctx context.Context, src exporter.Source) (map[string]string, error) {
if src.Metadata == nil {
src.Metadata = make(map[string][]byte)
}
for k, v := range e.meta {
src.Metadata[k] = v
}
desc, err := e.opt.ImageWriter.Commit(ctx, src, e.ociTypes)
if err != nil {
return nil, err
}
defer func() {
e.opt.ImageWriter.ContentStore().Delete(context.TODO(), desc.Digest)
}()
resp := make(map[string]string)
if n, ok := src.Metadata["image.name"]; e.targetName == "*" && ok {
e.targetName = string(n)
}
if e.targetName != "" {
targetNames := strings.Split(e.targetName, ",")
for _, targetName := range targetNames {
if e.opt.Images != nil {
tagDone := oneOffProgress(ctx, "naming to "+targetName)
img := images.Image{
Name: targetName,
Target: *desc,
CreatedAt: time.Now(),
}
if _, err := e.opt.Images.Update(ctx, img); err != nil {
if !errdefs.IsNotFound(err) {
return nil, tagDone(err)
}
if _, err := e.opt.Images.Create(ctx, img); err != nil {
return nil, tagDone(err)
}
}
tagDone(nil)
}
if e.push {
if err := push.Push(ctx, e.opt.SessionManager, e.opt.ImageWriter.ContentStore(), desc.Digest, targetName, e.insecure, e.opt.ResolverOpt); err != nil {
return nil, err
}
}
}
resp["image.name"] = e.targetName
}
resp["containerimage.digest"] = desc.Digest.String()
return resp, nil
}