Add support for org.osbuild.rhsm stage

Add support to configure `org.osbuild.rhsm` osbuild stage. This stage
allows the configuration of Red Hat Subscription Manager (RHSM) related
components. Currently it is possible to configure only the enablement
status of RHSM DNF plugins.

Add `/docs/news/unreleased/osbuild-rhsm-stage.md` with information about
the added support for `org.osbuild.rhsm` osbuild stage.

Signed-off-by: Tomas Hozza <thozza@redhat.com>

docs/news/unreleased/osbuild-rhsm-stage.md

@@ -0,0 +1,6 @@
+# Add support for `org.osbuild.rhsm` osbuild stage
+
+Add support for `org.osbuild.rhsm` osbuild stage. This stage is available in
+osbuild since version 24. The stage currently allows only configuring the
+enablement status of two RHSM DNF plugins, specifically of `product-id` and
+`subscription-manager` DNF plugins.

internal/osbuild/rhsm_stage.go

@@ -0,0 +1,34 @@
+package osbuild
+
+// RHSMStageOptions describes configuration of the RHSM stage.
+//
+// The RHSM stage allows configuration of Red Hat Subscription Manager (RHSM)
+// related components. Currently it allows only configuration of the enablement
+// state of DNF plugins used by the Subscription Manager.
+type RHSMStageOptions struct {
+	DnfPlugins *RHSMStageOptionsDnfPlugins `json:"dnf-plugins,omitempty"`
+}
+
+func (RHSMStageOptions) isStageOptions() {}
+
+// RHSMStageOptionsDnfPlugins describes configuration of all RHSM DNF plugins
+type RHSMStageOptionsDnfPlugins struct {
+	ProductID           *RHSMStageOptionsDnfPlugin `json:"product-id,omitempty"`
+	SubscriptionManager *RHSMStageOptionsDnfPlugin `json:"subscription-manager,omitempty"`
+}
+
+// RHSMStageOptionsDnfPlugin describes configuration of a specific RHSM DNF
+// plugin
+//
+// Only the enablement state of a DNF plugin can be currenlty  set.
+type RHSMStageOptionsDnfPlugin struct {
+	Enabled bool `json:"enabled"`
+}
+
+// NewRHSMStage creates a new RHSM stage
+func NewRHSMStage(options *RHSMStageOptions) *Stage {
+	return &Stage{
+		Name:    "org.osbuild.rhsm",
+		Options: options,
+	}
+}

internal/osbuild/rhsm_stage_test.go

@@ -0,0 +1,16 @@
+package osbuild
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewRhsmStage(t *testing.T) {
+	expectedStage := &Stage{
+		Name:    "org.osbuild.rhsm",
+		Options: &RHSMStageOptions{},
+	}
+	actualStage := NewRHSMStage(&RHSMStageOptions{})
+	assert.Equal(t, expectedStage, actualStage)
+}

internal/osbuild/stage.go

@@ -60,6 +60,8 @@ func (stage *Stage) UnmarshalJSON(data []byte) error {
 		options = new(KeymapStageOptions)
 	case "org.osbuild.firewall":
 		options = new(FirewallStageOptions)
+	case "org.osbuild.rhsm":
+		options = new(RHSMStageOptions)
 	case "org.osbuild.rpm":
 		options = new(RPMStageOptions)
 	case "org.osbuild.rpm-ostree":

internal/osbuild/stage_test.go

@@ -172,6 +172,35 @@ func TestStage_UnmarshalJSON(t *testing.T) {
 				data: []byte(`{"name":"org.osbuild.locale","options":{"language":""}}`),
 			},
 		},
+		{
+			name: "rhsm-empty",
+			fields: fields{
+				Name:    "org.osbuild.rhsm",
+				Options: &RHSMStageOptions{},
+			},
+			args: args{
+				data: []byte(`{"name":"org.osbuild.rhsm","options":{}}`),
+			},
+		},
+		{
+			name: "rhsm",
+			fields: fields{
+				Name: "org.osbuild.rhsm",
+				Options: &RHSMStageOptions{
+					DnfPlugins: &RHSMStageOptionsDnfPlugins{
+						ProductID: &RHSMStageOptionsDnfPlugin{
+							Enabled: false,
+						},
+						SubscriptionManager: &RHSMStageOptionsDnfPlugin{
+							Enabled: false,
+						},
+					},
+				},
+			},
+			args: args{
+				data: []byte(`{"name":"org.osbuild.rhsm","options":{"dnf-plugins":{"product-id":{"enabled":false},"subscription-manager":{"enabled":false}}}}`),
+			},
+		},
 		{
 			name: "rpm-empty",
 			fields: fields{