Add property Exportable to aconfig_declarations

Only when aconfig_declarations explicitly set this property true,
its flags will be repackaged.

If a java_aconfig_library has mode "exported", its corresponding
aconfig_declarations must have exportable prop set to true.

Test: Added unit tests and CI

Bug: 310504781

Ignore-AOSP-First: this change will be cherry picked to aosp
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e4527f3010b3fd6f33948a15a9b4fdc944da34f0)
Merged-In: Ie9526e3755a6e7d142b377d5dd85a1bc60ffabc5
Change-Id: Ie9526e3755a6e7d142b377d5dd85a1bc60ffabc5

aconfig/aconfig_declarations.go

@@ -40,6 +40,9 @@ type DeclarationsModule struct {
 
 		// Container(system/vendor/apex) that this module belongs to
 		Container string
+
+		// The flags will only be repackaged if this prop is true.
+		Exportable bool
 	}
 
 	intermediatePath android.WritablePath
@@ -159,6 +162,7 @@ func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.Module
 	android.SetProvider(ctx, android.AconfigDeclarationsProviderKey, android.AconfigDeclarationsProviderData{
 		Package:                     module.properties.Package,
 		Container:                   module.properties.Container,
+		Exportable:                  module.properties.Exportable,
 		IntermediateCacheOutputPath: intermediateCacheFilePath,
 		IntermediateDumpOutputPath:  intermediateDumpFilePath,
 	})

aconfig/aconfig_declarations_test.go

@@ -27,6 +27,7 @@ func TestAconfigDeclarations(t *testing.T) {
 			name: "module_name",
 			package: "com.example.package",
 			container: "com.android.foo",
+			exportable: true,
 			srcs: [
 				"foo.aconfig",
 				"bar.aconfig",
@@ -41,6 +42,7 @@ func TestAconfigDeclarations(t *testing.T) {
 	depData, _ := android.SingletonModuleProvider(result, module, android.AconfigDeclarationsProviderKey)
 	android.AssertStringEquals(t, "package", depData.Package, "com.example.package")
 	android.AssertStringEquals(t, "container", depData.Container, "com.android.foo")
+	android.AssertBoolEquals(t, "exportable", depData.Exportable, true)
 	if !strings.HasSuffix(depData.IntermediateCacheOutputPath.String(), "/intermediate.pb") {
 		t.Errorf("Missing intermediates proto path in provider: %s", depData.IntermediateCacheOutputPath.String())
 	}
@@ -48,3 +50,22 @@ func TestAconfigDeclarations(t *testing.T) {
 		t.Errorf("Missing intermediates text path in provider: %s", depData.IntermediateDumpOutputPath.String())
 	}
 }
+
+func TestAconfigDeclarationsWithExportableUnset(t *testing.T) {
+	bp := `
+		aconfig_declarations {
+			name: "module_name",
+			package: "com.example.package",
+			container: "com.android.foo",
+			srcs: [
+				"foo.aconfig",
+				"bar.aconfig",
+			],
+		}
+	`
+	result := runTest(t, android.FixtureExpectsNoErrors, bp)
+
+	module := result.ModuleForTests("module_name", "").Module().(*DeclarationsModule)
+	depData, _ := android.SingletonModuleProvider(result, module, android.AconfigDeclarationsProviderKey)
+	android.AssertBoolEquals(t, "exportable", depData.Exportable, false)
+}

aconfig/codegen/java_aconfig_library.go

@@ -91,6 +91,12 @@ func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) GenerateSourceJarBuild
 	if !isModeSupported(mode) {
 		ctx.PropertyErrorf("mode", "%q is not a supported mode", mode)
 	}
+	// TODO: uncomment this part after internal clean up
+	//if mode == "exported" && !declarations.Exportable {
+	//	// if mode is exported, the corresponding aconfig_declaration must mark its
+	//	// exportable property true
+	//	ctx.PropertyErrorf("mode", "exported mode requires its aconfig_declaration has exportable prop true")
+	//}
 
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        javaRule,
@@ -102,12 +108,15 @@ func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) GenerateSourceJarBuild
 		},
 	})
 
-	// Mark our generated code as possibly needing jarjar repackaging
+	if declarations.Exportable {
-	// TODO: Maybe control this with a property?
+		// Mark our generated code as possibly needing jarjar repackaging
-	module.AddJarJarRenameRule(declarations.Package+".Flags", "")
+		// The repackaging only happens when the corresponding aconfig_declaration
-	module.AddJarJarRenameRule(declarations.Package+".FeatureFlags", "")
+		// has property exportable true
-	module.AddJarJarRenameRule(declarations.Package+".FeatureFlagsImpl", "")
+		module.AddJarJarRenameRule(declarations.Package+".Flags", "")
-	module.AddJarJarRenameRule(declarations.Package+".FakeFeatureFlagsImpl", "")
+		module.AddJarJarRenameRule(declarations.Package+".FeatureFlags", "")
+		module.AddJarJarRenameRule(declarations.Package+".FeatureFlagsImpl", "")
+		module.AddJarJarRenameRule(declarations.Package+".FakeFeatureFlagsImpl", "")
+	}
 
 	return srcJarPath
 }

aconfig/codegen/java_aconfig_library_test.go

@@ -176,6 +176,7 @@ func testCodegenMode(t *testing.T, bpMode string, ruleMode string) {
 				name: "my_aconfig_declarations",
 				package: "com.example.package",
 				srcs: ["foo.aconfig"],
+				exportable: true,
 			}
 
 			java_aconfig_library {

android/aconfig_providers.go

@@ -35,6 +35,7 @@ var (
 type AconfigDeclarationsProviderData struct {
 	Package                     string
 	Container                   string
+	Exportable                  bool
 	IntermediateCacheOutputPath WritablePath
 	IntermediateDumpOutputPath  WritablePath
 }