MCO-2116: Generate OSImageStream manifest

hack/build-coreos-manifest.go

@@ -119,6 +119,7 @@ func mergeMarketplaceStream(streamJSON []byte) ([]byte, error) {
 				arch.RHELCoreOSExtensions = &rhcos.Extensions{}
 			}
 			arch.RHELCoreOSExtensions.Marketplace = mkt
+			stream.Architectures[name] = arch
 		}
 	}
 

pkg/asset/manifests/openshift.go

@@ -76,6 +76,7 @@ func (o *Openshift) Dependencies() []asset.Asset {
 		&openshift.BaremetalConfig{},
 		new(rhcos.Image),
 		&openshift.AzureCloudProviderSecret{},
+		&OSImageStream{},
 	}
 }
 
@@ -260,13 +261,15 @@ func (o *Openshift) Generate(ctx context.Context, dependencies asset.Parents) er
 	roleCloudCredsSecretReader := &openshift.RoleCloudCredsSecretReader{}
 	baremetalConfig := &openshift.BaremetalConfig{}
 	rhcosImage := new(rhcos.Image)
+	osImageStream := &OSImageStream{}
 
 	dependencies.Get(
 		cloudCredsSecret,
 		kubeadminPasswordSecret,
 		roleCloudCredsSecretReader,
 		baremetalConfig,
-		rhcosImage)
+		rhcosImage,
+		osImageStream)
 
 	assetData := map[string][]byte{
 		"99_kubeadmin-password-secret.yaml": applyTemplateData(kubeadminPasswordSecret.Files()[0].Data, templateData),
@@ -299,6 +302,7 @@ func (o *Openshift) Generate(ctx context.Context, dependencies asset.Parents) er
 
 	o.FileList = append(o.FileList, openshiftInstall.Files()...)
 	o.FileList = append(o.FileList, featureGate.Files()...)
+	o.FileList = append(o.FileList, osImageStream.Files()...)
 
 	asset.SortFiles(o.FileList)
 

pkg/asset/manifests/osimagestream.go

@@ -0,0 +1,92 @@
+package manifests
+
+import (
+	"context"
+	"github.com/openshift/installer/pkg/rhcos"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"path"
+
+	"github.com/openshift/api/features"
+	"github.com/pkg/errors"
+	"sigs.k8s.io/yaml"
+
+	mcfgv1alpha "github.com/openshift/api/machineconfiguration/v1alpha1"
+	"github.com/openshift/installer/pkg/asset"
+	"github.com/openshift/installer/pkg/asset/installconfig"
+)
+
+var osImageStreamFileName = path.Join(openshiftManifestDir, "99_osimagestream.yaml")
+
+// OSImageStream generates the OSImageStream manifest.
+type OSImageStream struct {
+	FileList []*asset.File
+}
+
+var _ asset.WritableAsset = (*OSImageStream)(nil)
+
+// Name returns a human-friendly name for the asset.
+func (*OSImageStream) Name() string {
+	return "OSImageStream"
+}
+
+// Dependencies returns all of the dependencies directly needed to generate
+// the asset.
+func (*OSImageStream) Dependencies() []asset.Asset {
+	return []asset.Asset{
+		&installconfig.InstallConfig{},
+	}
+}
+
+// Generate generates the OSImageStream CRD.
+func (f *OSImageStream) Generate(_ context.Context, dependencies asset.Parents) error {
+	installConfig := &installconfig.InstallConfig{}
+	dependencies.Get(installConfig)
+
+	// If one of the following are true the OSImageStream CR is not generated
+	// 1. The feature is not enabled
+	// 2. The target is CentOS Stream CoreOS
+	if !installConfig.Config.EnabledFeatureGates().Enabled(features.FeatureGateOSStreams) || installConfig.Config.IsSCOS() {
+		// FG disabled or not OCP
+		return nil
+	}
+
+	// If no stream was set just report the default one for the current version
+	stream := installConfig.Config.OSImageStream
+	if stream == "" {
+		stream = rhcos.DefaultOSImageStream
+	}
+
+	osImageStream := &mcfgv1alpha.OSImageStream{
+		TypeMeta: metav1.TypeMeta{
+			APIVersion: mcfgv1alpha.SchemeGroupVersion.String(),
+			Kind:       "OSImageStream",
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "cluster",
+		},
+		Spec: &mcfgv1alpha.OSImageStreamSpec{
+			DefaultStream: string(stream),
+		},
+	}
+
+	osImageStreamData, err := yaml.Marshal(osImageStream)
+	if err != nil {
+		return errors.Wrapf(err, "failed to create %s manifests from InstallConfig", f.Name())
+	}
+
+	f.FileList = append(f.FileList, &asset.File{
+		Filename: osImageStreamFileName,
+		Data:     osImageStreamData,
+	})
+	return nil
+}
+
+// Files returns the files generated by the asset.
+func (f *OSImageStream) Files() []*asset.File {
+	return f.FileList
+}
+
+// Load loads the already-rendered files back from disk.
+func (f *OSImageStream) Load(_ asset.FileFetcher) (bool, error) {
+	return false, nil
+}

pkg/rhcos/stream.go

@@ -2,6 +2,12 @@
 
 package rhcos
 
+import "github.com/openshift/installer/pkg/types"
+
+// DefaultOSImageStream is the OS image stream used when the install-config
+// does not specify one.
+const DefaultOSImageStream = types.OSImageStreamRHCOS9
+
 func getStreamFileName() string {
 	return "coreos/rhcos.json"
 }

pkg/rhcos/stream_scos.go

@@ -2,6 +2,11 @@
 
 package rhcos
 
+import "github.com/openshift/installer/pkg/types"
+
+// DefaultOSImageStream Not used in SCOS
+const DefaultOSImageStream types.OSImageStream = ""
+
 func getStreamFileName() string {
 	return "coreos/scos.json"
 }