func (aci *Aci) prepareStage1aci() (string, error) { ImportInternalBuilderIfNeeded(aci.manifest) if len(aci.manifest.Builder.Dependencies) == 0 { return "", nil } logs.WithFields(aci.fields).Debug("Preparing stage1") if err := os.MkdirAll(aci.target+pathStage1+common.PathRootfs, 0777); err != nil { return "", errs.WithEF(err, aci.fields.WithField("path", aci.target+pathBuilder), "Failed to create stage1 aci path") } Home.Rkt.Fetch(aci.manifest.Builder.Image.String()) manifestStr, err := Home.Rkt.CatManifest(aci.manifest.Builder.Image.String()) if err != nil { return "", errs.WithEF(err, aci.fields, "Failed to read stage1 image manifest") } manifest := schema.ImageManifest{} if err := json.Unmarshal([]byte(manifestStr), &manifest); err != nil { return "", errs.WithEF(err, aci.fields.WithField("content", manifestStr), "Failed to unmarshal stage1 manifest received from rkt") } manifest.Dependencies = types.Dependencies{} dep, err := common.ToAppcDependencies(aci.manifest.Builder.Dependencies) if err != nil { return "", errs.WithEF(err, aci.fields, "Invalid dependency on stage1 for rkt") } manifest.Dependencies = append(manifest.Dependencies, dep...) stage1Image, err := common.ToAppcDependencies([]common.ACFullname{aci.manifest.Builder.Image}) if err != nil { return "", errs.WithEF(err, aci.fields, "Invalid image on stage1 for rkt") } manifest.Dependencies = append(manifest.Dependencies, stage1Image...) name, err := types.NewACIdentifier(prefixBuilderStage1 + aci.manifest.NameAndVersion.Name()) if err != nil { return "", errs.WithEF(err, aci.fields.WithField("name", prefixBuilderStage1+aci.manifest.NameAndVersion.Name()), "aci name is not a valid identifier for rkt") } manifest.Name = *name content, err := json.MarshalIndent(&manifest, "", " ") if err != nil { return "", errs.WithEF(err, aci.fields, "Failed to marshal builder's stage1 manifest") } if err := ioutil.WriteFile(aci.target+pathStage1+common.PathManifest, content, 0644); err != nil { return "", errs.WithEF(err, aci.fields.WithField("path", aci.target+pathStage1+common.PathManifest), "Failed to write builder's stage1 manifest to file") } if err := aci.tarAci(aci.target + pathStage1); err != nil { return "", err } logs.WithF(aci.fields.WithField("path", aci.target+pathStage1+pathImageAci)).Info("Importing builder's stage1") hash, err := Home.Rkt.FetchInsecure(aci.target + pathStage1 + pathImageAci) if err != nil { return "", errs.WithEF(err, aci.fields, "fetch of builder's stage1 aci failed") } return hash, nil }