Introduce vintf_fragment module type

Introduce a new vintf_fragment module type which handles vintf_fragment
files within Soong. This will help process to move vintf_fragment
handling logic from KATI to Soong. This change also introduces
vintf_fragment_modules property to mark dependency with vintf_fragment
modules.

Bug: 322089980
Test: m nothing --no-skip-soong-tests passed
Change-Id: I49607f42aeee3ded0ba7b078b903dc35f5d61637

1 files changed, 84 insertions, 0 deletions

diff --git a/android/vintf_fragment.go b/android/vintf_fragment.go
new file mode 100644
index 000000000..329eac974
--- /dev/null
+++ b/android/vintf_fragment.go
@@ -0,0 +1,84 @@
+// Copyright 2024 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package android
+
+type vintfFragmentProperties struct {
+	// Vintf fragment XML file.
+	Src string `android:"path"`
+}
+
+type vintfFragmentModule struct {
+	ModuleBase
+
+	properties vintfFragmentProperties
+
+	installDirPath InstallPath
+	outputFilePath OutputPath
+}
+
+func init() {
+	registerVintfFragmentComponents(InitRegistrationContext)
+}
+
+func registerVintfFragmentComponents(ctx RegistrationContext) {
+	ctx.RegisterModuleType("vintf_fragment", vintfLibraryFactory)
+}
+
+// vintf_fragment module processes vintf fragment file and installs under etc/vintf/manifest.
+// Vintf fragment files formerly listed in vintf_fragment property would be transformed into
+// this module type.
+func vintfLibraryFactory() Module {
+	m := &vintfFragmentModule{}
+	m.AddProperties(
+		&m.properties,
+	)
+	InitAndroidArchModule(m, DeviceSupported, MultilibFirst)
+
+	return m
+}
+
+func (m *vintfFragmentModule) GenerateAndroidBuildActions(ctx ModuleContext) {
+	builder := NewRuleBuilder(pctx, ctx)
+	srcVintfFragment := PathForModuleSrc(ctx, m.properties.Src)
+	processedVintfFragment := PathForModuleOut(ctx, srcVintfFragment.Base())
+
+	// Process vintf fragment source file with assemble_vintf tool
+	builder.Command().
+		Flag("VINTF_IGNORE_TARGET_FCM_VERSION=true").
+		BuiltTool("assemble_vintf").
+		FlagWithInput("-i ", srcVintfFragment).
+		FlagWithOutput("-o ", processedVintfFragment)
+
+	builder.Build("assemble_vintf", "Process vintf fragment "+processedVintfFragment.String())
+
+	m.installDirPath = PathForModuleInstall(ctx, "etc", "vintf", "manifest")
+	m.outputFilePath = processedVintfFragment.OutputPath
+
+	ctx.InstallFile(m.installDirPath, processedVintfFragment.Base(), processedVintfFragment)
+}
+
+// Make this module visible to AndroidMK so it can be referenced from modules defined from Android.mk files
+func (m *vintfFragmentModule) AndroidMkEntries() []AndroidMkEntries {
+	return []AndroidMkEntries{{
+		Class:      "ETC",
+		OutputFile: OptionalPathForPath(m.outputFilePath),
+		ExtraEntries: []AndroidMkExtraEntriesFunc{
+			func(ctx AndroidMkExtraEntriesContext, entries *AndroidMkEntries) {
+				entries.SetString("LOCAL_MODULE_PATH", m.installDirPath.String())
+				entries.SetString("LOCAL_INSTALLED_MODULE_STEM", m.outputFilePath.Base())
+			},
+		},
+	}}
+}