Remove exportable modules when generating snapshots targeting older platform

This change modifies the contents of the generated Android.bp files so
that when generating a snapshot on a older platform, the "exportable"
modules are removed from the bp files, as the "exportable" modules are
first introduced in V and do not exist in older platforms.

Bug: 345162614
Test: ABTD
Change-Id: I2dba51b98deec7805bd796647a66981f237c55a9

android/api_levels.go

@@ -291,6 +291,8 @@ var ApiLevelR = uncheckedFinalApiLevel(30)
 
 var ApiLevelUpsideDownCake = uncheckedFinalApiLevel(34)
 
+var ApiLevelVanillaIceCream = uncheckedFinalApiLevel(35)
+
 // ReplaceFinalizedCodenames returns the API level number associated with that API level
 // if the `raw` input is the codename of an API level has been finalized.
 // If the input is *not* a finalized codename, the input is returned unmodified.

java/java.go

@@ -2178,7 +2178,7 @@ func (al *ApiLibrary) DepsMutator(ctx android.BottomUpMutatorContext) {
 
 // Map where key is the api scope name and value is the int value
 // representing the order of the api scope, narrowest to the widest
-var scopeOrderMap = allApiScopes.MapToIndex(
+var scopeOrderMap = AllApiScopes.MapToIndex(
 	func(s *apiScope) string { return s.name })
 
 func (al *ApiLibrary) sortApiFilesByApiScope(ctx android.ModuleContext, srcFilesInfo []JavaApiImportInfo) []JavaApiImportInfo {

java/sdk_library.go

@@ -324,6 +324,16 @@ func (scopes apiScopes) MapToIndex(accessor func(*apiScope) string) map[string]i
 	return ret
 }
 
+func (scopes apiScopes) ConvertStubsLibraryExportableToEverything(name string) string {
+	for _, scope := range scopes {
+		if strings.HasSuffix(name, scope.exportableStubsLibraryModuleNameSuffix()) {
+			return strings.TrimSuffix(name, scope.exportableStubsLibraryModuleNameSuffix()) +
+				scope.stubsLibraryModuleNameSuffix()
+		}
+	}
+	return name
+}
+
 var (
 	scopeByName    = make(map[string]*apiScope)
 	allScopeNames  []string
@@ -418,7 +428,7 @@ var (
 		},
 		kind: android.SdkSystemServer,
 	})
-	allApiScopes = apiScopes{
+	AllApiScopes = apiScopes{
 		apiScopePublic,
 		apiScopeSystem,
 		apiScopeTest,
@@ -1204,7 +1214,7 @@ func (c *commonToSdkLibraryAndImport) selectScopePaths(ctx android.BaseModuleCon
 	paths := c.findClosestScopePath(apiScope)
 	if paths == nil {
 		var scopes []string
-		for _, s := range allApiScopes {
+		for _, s := range AllApiScopes {
 			if c.findScopePaths(s) != nil {
 				scopes = append(scopes, s.name)
 			}
@@ -1421,7 +1431,7 @@ func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext)
 	// Check to see if any scopes have been explicitly enabled. If any have then all
 	// must be.
 	anyScopesExplicitlyEnabled := false
-	for _, scope := range allApiScopes {
+	for _, scope := range AllApiScopes {
 		scopeProperties := module.scopeToProperties[scope]
 		if scopeProperties.Enabled != nil {
 			anyScopesExplicitlyEnabled = true
@@ -1431,7 +1441,7 @@ func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext)
 
 	var generatedScopes apiScopes
 	enabledScopes := make(map[*apiScope]struct{})
-	for _, scope := range allApiScopes {
+	for _, scope := range AllApiScopes {
 		scopeProperties := module.scopeToProperties[scope]
 		// If any scopes are explicitly enabled then ignore the legacy enabled status.
 		// This is to ensure that any new usages of this module type do not rely on legacy
@@ -1451,7 +1461,7 @@ func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext)
 
 	// Now check to make sure that any scope that is extended by an enabled scope is also
 	// enabled.
-	for _, scope := range allApiScopes {
+	for _, scope := range AllApiScopes {
 		if _, ok := enabledScopes[scope]; ok {
 			extends := scope.extends
 			if extends != nil {
@@ -2580,7 +2590,7 @@ func SdkLibraryFactory() android.Module {
 
 	// Initialize the map from scope to scope specific properties.
 	scopeToProperties := make(map[*apiScope]*ApiScopeProperties)
-	for _, scope := range allApiScopes {
+	for _, scope := range AllApiScopes {
 		scopeToProperties[scope] = scope.scopeSpecificProperties(module)
 	}
 	module.scopeToProperties = scopeToProperties
@@ -2697,7 +2707,7 @@ var allScopeStructType = createAllScopePropertiesStructType()
 // Dynamically create a structure type for each apiscope in allApiScopes.
 func createAllScopePropertiesStructType() reflect.Type {
 	var fields []reflect.StructField
-	for _, apiScope := range allApiScopes {
+	for _, apiScope := range AllApiScopes {
 		field := reflect.StructField{
 			Name: apiScope.fieldName,
 			Type: reflect.TypeOf(sdkLibraryScopeProperties{}),
@@ -2715,7 +2725,7 @@ func createPropertiesInstance() (interface{}, map[*apiScope]*sdkLibraryScopeProp
 	allScopePropertiesStruct := allScopePropertiesPtr.Elem()
 	scopeProperties := make(map[*apiScope]*sdkLibraryScopeProperties)
 
-	for _, apiScope := range allApiScopes {
+	for _, apiScope := range AllApiScopes {
 		field := allScopePropertiesStruct.FieldByName(apiScope.fieldName)
 		scopeProperties[apiScope] = field.Addr().Interface().(*sdkLibraryScopeProperties)
 	}
@@ -3597,7 +3607,7 @@ func (s *sdkLibrarySdkMemberProperties) PopulateFromVariant(ctx android.SdkMembe
 	s.Stem = sdk.distStem()
 
 	s.Scopes = make(map[*apiScope]*scopeProperties)
-	for _, apiScope := range allApiScopes {
+	for _, apiScope := range AllApiScopes {
 		paths := sdk.findScopePaths(apiScope)
 		if paths == nil {
 			continue
@@ -3659,7 +3669,7 @@ func (s *sdkLibrarySdkMemberProperties) AddToPropertySet(ctx android.SdkMemberCo
 
 	stem := s.Stem
 
-	for _, apiScope := range allApiScopes {
+	for _, apiScope := range AllApiScopes {
 		if properties, ok := s.Scopes[apiScope]; ok {
 			scopeSet := propertySet.AddPropertySet(apiScope.propertyName)
 

sdk/sdk_test.go

@@ -515,6 +515,142 @@ java_sdk_library_import {
 .intermediates/mysdklibrary.stubs.exportable/android_common/combined/mysdklibrary.stubs.exportable.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/exportable/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/exportable/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
+`),
+		)
+	})
+
+	t.Run("test replacing exportable module", func(t *testing.T) {
+		result := android.GroupFixturePreparers(
+			prepareForSdkTestWithJava,
+			java.PrepareForTestWithJavaDefaultModules,
+			java.PrepareForTestWithJavaSdkLibraryFiles,
+			java.FixtureWithLastReleaseApis("mysdklibrary", "anothersdklibrary"),
+			android.FixtureWithRootAndroidBp(`
+			sdk {
+				name: "mysdk",
+				bootclasspath_fragments: ["mybootclasspathfragment"],
+			}
+
+			bootclasspath_fragment {
+				name: "mybootclasspathfragment",
+				apex_available: ["myapex"],
+				contents: ["mysdklibrary"],
+				hidden_api: {
+					split_packages: ["*"],
+				},
+				core_platform_api: {
+					stub_libs: [
+						"anothersdklibrary.stubs.exportable",
+					],
+				},
+				api: {
+					stub_libs: [
+						"anothersdklibrary",
+					],
+				},
+			}
+
+			java_sdk_library {
+				name: "mysdklibrary",
+				srcs: ["Test.java"],
+				compile_dex: true,
+				min_sdk_version: "S",
+				public: {enabled: true},
+				permitted_packages: ["mysdklibrary"],
+			}
+
+			java_sdk_library {
+				name: "anothersdklibrary",
+				srcs: ["Test.java"],
+				compile_dex: true,
+				min_sdk_version: "S",
+				public: {enabled: true},
+				system: {enabled: true},
+				module_lib: {enabled: true},
+			}
+		`),
+			android.FixtureMergeEnv(map[string]string{
+				"SOONG_SDK_SNAPSHOT_TARGET_BUILD_RELEASE": "S",
+			}),
+			android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
+				variables.BuildFlags = map[string]string{
+					"RELEASE_HIDDEN_API_EXPORTABLE_STUBS": "true",
+				}
+				variables.Platform_version_active_codenames = []string{"UpsideDownCake", "Tiramisu", "S-V2"}
+			}),
+		).RunTest(t)
+
+		CheckSnapshot(t, result, "mysdk", "",
+			checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+prebuilt_bootclasspath_fragment {
+    name: "mybootclasspathfragment",
+    prefer: false,
+    visibility: ["//visibility:public"],
+    apex_available: ["myapex"],
+    contents: ["mysdklibrary"],
+    api: {
+        stub_libs: ["anothersdklibrary"],
+    },
+    core_platform_api: {
+        stub_libs: ["anothersdklibrary.stubs"],
+    },
+    hidden_api: {
+        annotation_flags: "hiddenapi/annotation-flags.csv",
+        metadata: "hiddenapi/metadata.csv",
+        index: "hiddenapi/index.csv",
+        stub_flags: "hiddenapi/stub-flags.csv",
+        all_flags: "hiddenapi/all-flags.csv",
+    },
+}
+
+java_sdk_library_import {
+    name: "mysdklibrary",
+    prefer: false,
+    visibility: ["//visibility:public"],
+    apex_available: ["//apex_available:platform"],
+    shared_library: true,
+    compile_dex: true,
+    permitted_packages: ["mysdklibrary"],
+    public: {
+        jars: ["sdk_library/public/mysdklibrary-stubs.jar"],
+        stub_srcs: ["sdk_library/public/mysdklibrary_stub_sources"],
+        current_api: "sdk_library/public/mysdklibrary.txt",
+        removed_api: "sdk_library/public/mysdklibrary-removed.txt",
+        sdk_version: "current",
+    },
+}
+
+java_sdk_library_import {
+    name: "anothersdklibrary",
+    prefer: false,
+    visibility: ["//visibility:public"],
+    apex_available: ["//apex_available:platform"],
+    shared_library: true,
+    compile_dex: true,
+    public: {
+        jars: ["sdk_library/public/anothersdklibrary-stubs.jar"],
+        stub_srcs: ["sdk_library/public/anothersdklibrary_stub_sources"],
+        current_api: "sdk_library/public/anothersdklibrary.txt",
+        removed_api: "sdk_library/public/anothersdklibrary-removed.txt",
+        sdk_version: "current",
+    },
+    system: {
+        jars: ["sdk_library/system/anothersdklibrary-stubs.jar"],
+        stub_srcs: ["sdk_library/system/anothersdklibrary_stub_sources"],
+        current_api: "sdk_library/system/anothersdklibrary.txt",
+        removed_api: "sdk_library/system/anothersdklibrary-removed.txt",
+        sdk_version: "system_current",
+    },
+    module_lib: {
+        jars: ["sdk_library/module-lib/anothersdklibrary-stubs.jar"],
+        stub_srcs: ["sdk_library/module-lib/anothersdklibrary_stub_sources"],
+        current_api: "sdk_library/module-lib/anothersdklibrary.txt",
+        removed_api: "sdk_library/module-lib/anothersdklibrary-removed.txt",
+        sdk_version: "module_current",
+    },
+}
 `),
 		)
 	})

sdk/update.go

@@ -480,6 +480,12 @@ be unnecessary as every module in the sdk already has its own licenses property.
 		// Transform the module module to make it suitable for use in the snapshot.
 		module = transformModule(module, snapshotTransformer)
 		module = transformModule(module, emptyClasspathContentsTransformation{})
+
+		targetApiLevel, err := android.ApiLevelFromUserWithConfig(ctx.Config(), s.targetBuildRelease(ctx).name)
+		if err == nil && targetApiLevel.LessThan(android.ApiLevelVanillaIceCream) {
+			module = transformModule(module, replaceExportablePropertiesTransformer{})
+		}
+
 		if module != nil {
 			bpFile.AddModule(module)
 		}
@@ -804,6 +810,50 @@ func (t pruneEmptySetTransformer) transformPropertySetAfterContents(_ string, pr
 	}
 }
 
+type replaceExportablePropertiesTransformer struct {
+	identityTransformation
+}
+
+var _ bpTransformer = (*replaceExportablePropertiesTransformer)(nil)
+
+func handleExportableProperties[T any](value T) any {
+	switch v := any(value).(type) {
+	case string:
+		return java.AllApiScopes.ConvertStubsLibraryExportableToEverything(v)
+	case *bpPropertySet:
+		v.properties = handleExportableProperties(v.properties).(map[string]interface{})
+		return v
+	case []string:
+		result := make([]string, len(v))
+		for i, elem := range v {
+			result[i] = handleExportableProperties(elem).(string)
+		}
+		return result
+	case []any:
+		result := make([]any, len(v))
+		for i, elem := range v {
+			result[i] = handleExportableProperties(elem)
+		}
+		return result
+	case map[string]any:
+		result := make(map[string]any)
+		for k, val := range v {
+			result[k] = handleExportableProperties(val)
+		}
+		return result
+	default:
+		return value
+	}
+}
+
+func (t replaceExportablePropertiesTransformer) transformPropertySetAfterContents(name string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
+	if name == "name" {
+		return propertySet, tag
+	}
+	propertySet.properties = handleExportableProperties(propertySet.properties).(map[string]interface{})
+	return propertySet, tag
+}
+
 func generateBpContents(bpFile *bpFile) string {
 	contents := &generatedContents{}
 	contents.IndentedPrintf("// This is auto-generated. DO NOT EDIT.\n")