osbuild: add missing inputs to boots.install-to-filesystem

Add the missing inputs to boots.install-to-filesystem - they are
required because boots needs to know what container to deploy.

pkg/osbuild/bootc_install_to_filesystem_stage.go

@@ -1,5 +1,9 @@
 package osbuild
 
+import (
+	"fmt"
+)
+
 // NewBootcInstallToFilesystem creates a new stage for the
 // org.osbuild.bootc.install-to-filesystem stage.
 //
@@ -8,13 +12,18 @@ package osbuild
 // bootc/bootupd find and install all required bootloader bits.
 //
 // The mounts input should be generated with GenBootupdDevicesMounts.
-func NewBootcInstallToFilesystemStage(devices map[string]Device, mounts []Mount) (*Stage, error) {
+func NewBootcInstallToFilesystemStage(inputs ContainersInput, devices map[string]Device, mounts []Mount) (*Stage, error) {
 	if err := validateBootupdMounts(mounts); err != nil {
 		return nil, err
 	}
 
+	if len(inputs.References) != 1 {
+		return nil, fmt.Errorf("expected exactly one container input but got: %v (%v)", len(inputs.References), inputs.References)
+	}
+
 	return &Stage{
 		Type:    "org.osbuild.bootc.install-to-filesystem",
+		Inputs:  inputs,
 		Devices: devices,
 		Mounts:  mounts,
 	}, nil

pkg/osbuild/bootc_install_to_filesystem_stage_test.go

@@ -7,28 +7,65 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/osbuild/images/pkg/container"
 	"github.com/osbuild/images/pkg/osbuild"
 )
 
+func makeFakeContainerInputs() osbuild.ContainersInput {
+	return osbuild.NewContainersInputForSources([]container.Spec{
+		{
+			ImageID:   "id-0",
+			Source:    "registry.example.org/reg/img",
+			LocalName: "local-name",
+		},
+	})
+}
+
 func TestBootcInstallToFilesystemStageNewHappy(t *testing.T) {
 	devices := makeOsbuildDevices("dev-for-/", "dev-for-/boot", "dev-for-/boot/efi")
 	mounts := makeOsbuildMounts("/", "/boot", "/boot/efi")
+	inputs := makeFakeContainerInputs()
 
 	expectedStage := &osbuild.Stage{
 		Type:    "org.osbuild.bootc.install-to-filesystem",
+		Inputs:  inputs,
 		Devices: devices,
 		Mounts:  mounts,
 	}
-	stage, err := osbuild.NewBootcInstallToFilesystemStage(devices, mounts)
+	stage, err := osbuild.NewBootcInstallToFilesystemStage(inputs, devices, mounts)
 	require.Nil(t, err)
 	assert.Equal(t, stage, expectedStage)
 }
 
+func TestBootcInstallToFilesystemStageNewNoContainers(t *testing.T) {
+	devices := makeOsbuildDevices("dev-for-/", "dev-for-/boot", "dev-for-/boot/efi")
+	mounts := makeOsbuildMounts("/", "/boot", "/boot/efi")
+	inputs := osbuild.ContainersInput{}
+
+	_, err := osbuild.NewBootcInstallToFilesystemStage(inputs, devices, mounts)
+	assert.EqualError(t, err, "expected exactly one container input but got: 0 (map[])")
+}
+
+func TestBootcInstallToFilesystemStageNewTwoContainers(t *testing.T) {
+	devices := makeOsbuildDevices("dev-for-/", "dev-for-/boot", "dev-for-/boot/efi")
+	mounts := makeOsbuildMounts("/", "/boot", "/boot/efi")
+	inputs := osbuild.ContainersInput{
+		References: map[string]osbuild.ContainersInputSourceRef{
+			"1": {},
+			"2": {},
+		},
+	}
+
+	_, err := osbuild.NewBootcInstallToFilesystemStage(inputs, devices, mounts)
+	assert.EqualError(t, err, "expected exactly one container input but got: 2 (map[1:{} 2:{}])")
+}
+
 func TestBootcInstallToFilesystemStageMissingMounts(t *testing.T) {
 	devices := makeOsbuildDevices("dev-for-/")
 	mounts := makeOsbuildMounts("/")
+	inputs := makeFakeContainerInputs()
 
-	stage, err := osbuild.NewBootcInstallToFilesystemStage(devices, mounts)
+	stage, err := osbuild.NewBootcInstallToFilesystemStage(inputs, devices, mounts)
 	// XXX: rename error
 	assert.ErrorContains(t, err, "required mounts for bootupd stage [/boot /boot/efi] missing")
 	require.Nil(t, stage)
@@ -37,13 +74,23 @@ func TestBootcInstallToFilesystemStageMissingMounts(t *testing.T) {
 func TestBootcInstallToFilesystemStageJsonHappy(t *testing.T) {
 	devices := makeOsbuildDevices("disk", "dev-for-/", "dev-for-/boot", "dev-for-/boot/efi")
 	mounts := makeOsbuildMounts("/", "/boot", "/boot/efi")
+	inputs := makeFakeContainerInputs()
 
-	stage, err := osbuild.NewBootcInstallToFilesystemStage(devices, mounts)
+	stage, err := osbuild.NewBootcInstallToFilesystemStage(inputs, devices, mounts)
 	require.Nil(t, err)
 	stageJson, err := json.MarshalIndent(stage, "", "  ")
 	require.Nil(t, err)
 	assert.Equal(t, string(stageJson), `{
   "type": "org.osbuild.bootc.install-to-filesystem",
+  "inputs": {
+    "type": "org.osbuild.containers",
+    "origin": "org.osbuild.source",
+    "references": {
+      "id-0": {
+        "name": "local-name"
+      }
+    }
+  },
   "devices": {
     "dev-for-/": {
       "type": "org.osbuild.loopback"