java/systemserver_classpath_fragment.go - platform/build/soong - Git at Google

 // Copyright 2021 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 java

 import (
 	"android/soong/android"
 	"android/soong/dexpreopt"

 	"github.com/google/blueprint"
 )

 func init() {
 	registerSystemserverClasspathBuildComponents(android.InitRegistrationContext)

 	android.RegisterSdkMemberType(&systemServerClasspathFragmentMemberType{
 		SdkMemberTypeBase: android.SdkMemberTypeBase{
 			PropertyName: "systemserverclasspath_fragments",
 			SupportsSdk:  true,
 		},
 	})
 }

 func registerSystemserverClasspathBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("platform_systemserverclasspath", platformSystemServerClasspathFactory)
 	ctx.RegisterModuleType("systemserverclasspath_fragment", systemServerClasspathFactory)
 	ctx.RegisterModuleType("prebuilt_systemserverclasspath_fragment", prebuiltSystemServerClasspathModuleFactory)
 }

 type platformSystemServerClasspathModule struct {
 	android.ModuleBase

 	ClasspathFragmentBase
 }

 func platformSystemServerClasspathFactory() android.Module {
 	m := &platformSystemServerClasspathModule{}
 	initClasspathFragment(m, SYSTEMSERVERCLASSPATH)
 	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
 	return m
 }

 func (p *platformSystemServerClasspathModule) AndroidMkEntries() (entries []android.AndroidMkEntries) {
 	return p.classpathFragmentBase().androidMkEntries()
 }

 func (p *platformSystemServerClasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	configuredJars := p.configuredJars(ctx)
 	classpathJars := configuredJarListToClasspathJars(ctx, configuredJars, p.classpathType)
 	standaloneConfiguredJars := p.standaloneConfiguredJars(ctx)
 	standaloneClasspathJars := configuredJarListToClasspathJars(ctx, standaloneConfiguredJars, STANDALONE_SYSTEMSERVER_JARS)
 	configuredJars = configuredJars.AppendList(&standaloneConfiguredJars)
 	classpathJars = append(classpathJars, standaloneClasspathJars...)
 	p.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars)
 }

 func (p *platformSystemServerClasspathModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList {
 	// TODO(satayev): include any apex jars that don't populate their classpath proto config.
 	return dexpreopt.GetGlobalConfig(ctx).SystemServerJars
 }

 func (p *platformSystemServerClasspathModule) standaloneConfiguredJars(ctx android.ModuleContext) android.ConfiguredJarList {
 	return dexpreopt.GetGlobalConfig(ctx).StandaloneSystemServerJars
 }

 type SystemServerClasspathModule struct {
 	android.ModuleBase
 	android.ApexModuleBase
 	android.SdkBase

 	ClasspathFragmentBase

 	properties systemServerClasspathFragmentProperties

 	// Collect the module directory for IDE info in java/jdeps.go.
 	modulePaths []string
 }

 func (s *SystemServerClasspathModule) ShouldSupportSdkVersion(ctx android.BaseModuleContext, sdkVersion android.ApiLevel) error {
 	return nil
 }

 type systemServerClasspathFragmentProperties struct {
 	// List of system_server classpath jars, could be either java_library, or java_sdk_library.
 	//
 	// The order of this list matters as it is the order that is used in the SYSTEMSERVERCLASSPATH.
 	Contents []string

 	// List of jars that system_server loads dynamically using separate classloaders.
 	//
 	// The order does not matter.
 	Standalone_contents []string
 }

 func systemServerClasspathFactory() android.Module {
 	m := &SystemServerClasspathModule{}
 	m.AddProperties(&m.properties)
 	android.InitApexModule(m)
 	android.InitSdkAwareModule(m)
 	initClasspathFragment(m, SYSTEMSERVERCLASSPATH)
 	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
 	return m
 }

 func (s *SystemServerClasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	if len(s.properties.Contents) == 0 && len(s.properties.Standalone_contents) == 0 {
 		ctx.PropertyErrorf("contents", "Either contents or standalone_contents needs to be non-empty")
 	}

 	configuredJars := s.configuredJars(ctx)
 	classpathJars := configuredJarListToClasspathJars(ctx, configuredJars, s.classpathType)
 	standaloneConfiguredJars := s.standaloneConfiguredJars(ctx)
 	standaloneClasspathJars := configuredJarListToClasspathJars(ctx, standaloneConfiguredJars, STANDALONE_SYSTEMSERVER_JARS)
 	configuredJars = configuredJars.AppendList(&standaloneConfiguredJars)
 	classpathJars = append(classpathJars, standaloneClasspathJars...)
 	s.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars)

 	// Collect the module directory for IDE info in java/jdeps.go.
 	s.modulePaths = append(s.modulePaths, ctx.ModuleDir())
 }

 func (s *SystemServerClasspathModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList {
 	global := dexpreopt.GetGlobalConfig(ctx)

 	possibleUpdatableModules := gatherPossibleApexModuleNamesAndStems(ctx, s.properties.Contents, systemServerClasspathFragmentContentDepTag)
 	jars, unknown := global.ApexSystemServerJars.Filter(possibleUpdatableModules)
 	// TODO(satayev): remove geotz ssc_fragment, since geotz is not part of SSCP anymore.
 	_, unknown = android.RemoveFromList("geotz", unknown)
 	// This module only exists in car products.
 	// So ignore it even if it is not in PRODUCT_APEX_SYSTEM_SERVER_JARS.
 	// TODO(b/203233647): Add better mechanism to make it optional.
 	_, unknown = android.RemoveFromList("car-frameworks-service-module", unknown)

 	// This module is optional, so it is not present in all products.
 	// (See PRODUCT_ISOLATED_COMPILATION_ENABLED.)
 	// So ignore it even if it is not in PRODUCT_APEX_SYSTEM_SERVER_JARS.
 	// TODO(b/203233647): Add better mechanism to make it optional.
 	_, unknown = android.RemoveFromList("service-compos", unknown)

 	// TODO(satayev): for apex_test we want to include all contents unconditionally to classpaths
 	// config. However, any test specific jars would not be present in ApexSystemServerJars. Instead,
 	// we should check if we are creating a config for apex_test via ApexInfo and amend the values.
 	// This is an exception to support end-to-end test for ApexdUnitTests, until such support exists.
 	if android.InList("test_service-apexd", possibleUpdatableModules) {
 		jars = jars.Append("com.android.apex.test_package", "test_service-apexd")
 	} else if global.ApexSystemServerJars.Len() > 0 && len(unknown) > 0 && !android.IsModuleInVersionedSdk(ctx.Module()) {
 		// For non test apexes, make sure that all contents are actually declared in make.
 		ctx.ModuleErrorf("%s in contents must also be declared in PRODUCT_APEX_SYSTEM_SERVER_JARS", unknown)
 	}

 	return jars
 }

 func (s *SystemServerClasspathModule) standaloneConfiguredJars(ctx android.ModuleContext) android.ConfiguredJarList {
 	global := dexpreopt.GetGlobalConfig(ctx)

 	possibleUpdatableModules := gatherPossibleApexModuleNamesAndStems(ctx, s.properties.Standalone_contents, systemServerClasspathFragmentContentDepTag)
 	jars, _ := global.ApexStandaloneSystemServerJars.Filter(possibleUpdatableModules)

 	// TODO(jiakaiz): add a check to ensure that the contents are declared in make.

 	return jars
 }

 type systemServerClasspathFragmentContentDependencyTag struct {
 	blueprint.BaseDependencyTag
 }

 // The systemserverclasspath_fragment contents must never depend on prebuilts.
 func (systemServerClasspathFragmentContentDependencyTag) ReplaceSourceWithPrebuilt() bool {
 	return false
 }

 // SdkMemberType causes dependencies added with this tag to be automatically added to the sdk as if
 // they were specified using java_systemserver_libs or java_sdk_libs.
 func (b systemServerClasspathFragmentContentDependencyTag) SdkMemberType(child android.Module) android.SdkMemberType {
 	// If the module is a java_sdk_library then treat it as if it was specified in the java_sdk_libs
 	// property, otherwise treat if it was specified in the java_systemserver_libs property.
 	if javaSdkLibrarySdkMemberType.IsInstance(child) {
 		return javaSdkLibrarySdkMemberType
 	}

 	return javaSystemserverLibsSdkMemberType
 }

 func (b systemServerClasspathFragmentContentDependencyTag) ExportMember() bool {
 	return true
 }

 // Contents of system server fragments in an apex are considered to be directly in the apex, as if
 // they were listed in java_libs.
 func (systemServerClasspathFragmentContentDependencyTag) CopyDirectlyInAnyApex() {}

 // Contents of system server fragments require files from prebuilt apex files.
 func (systemServerClasspathFragmentContentDependencyTag) RequiresFilesFromPrebuiltApex() {}

 var _ android.ReplaceSourceWithPrebuilt = systemServerClasspathFragmentContentDepTag
 var _ android.SdkMemberDependencyTag = systemServerClasspathFragmentContentDepTag
 var _ android.CopyDirectlyInAnyApexTag = systemServerClasspathFragmentContentDepTag
 var _ android.RequiresFilesFromPrebuiltApexTag = systemServerClasspathFragmentContentDepTag

 // The tag used for the dependency between the systemserverclasspath_fragment module and its contents.
 var systemServerClasspathFragmentContentDepTag = systemServerClasspathFragmentContentDependencyTag{}

 func IsSystemServerClasspathFragmentContentDepTag(tag blueprint.DependencyTag) bool {
 	return tag == systemServerClasspathFragmentContentDepTag
 }

 func (s *SystemServerClasspathModule) ComponentDepsMutator(ctx android.BottomUpMutatorContext) {
 	module := ctx.Module()
 	_, isSourceModule := module.(*SystemServerClasspathModule)
 	var deps []string
 	deps = append(deps, s.properties.Contents...)
 	deps = append(deps, s.properties.Standalone_contents...)

 	for _, name := range deps {
 		// A systemserverclasspath_fragment must depend only on other source modules, while the
 		// prebuilt_systemserverclasspath_fragment_fragment must only depend on other prebuilt modules.
 		if !isSourceModule {
 			name = android.PrebuiltNameFromSource(name)
 		}
 		ctx.AddDependency(module, systemServerClasspathFragmentContentDepTag, name)
 	}
 }

 // Collect information for opening IDE project files in java/jdeps.go.
 func (s *SystemServerClasspathModule) IDEInfo(dpInfo *android.IdeInfo) {
 	dpInfo.Deps = append(dpInfo.Deps, s.properties.Contents...)
 	dpInfo.Deps = append(dpInfo.Deps, s.properties.Standalone_contents...)
 	dpInfo.Paths = append(dpInfo.Paths, s.modulePaths...)
 }

 type systemServerClasspathFragmentMemberType struct {
 	android.SdkMemberTypeBase
 }

 func (s *systemServerClasspathFragmentMemberType) AddDependencies(ctx android.SdkDependencyContext, dependencyTag blueprint.DependencyTag, names []string) {
 	ctx.AddVariationDependencies(nil, dependencyTag, names...)
 }

 func (s *systemServerClasspathFragmentMemberType) IsInstance(module android.Module) bool {
 	_, ok := module.(*SystemServerClasspathModule)
 	return ok
 }

 func (s *systemServerClasspathFragmentMemberType) AddPrebuiltModule(ctx android.SdkMemberContext, member android.SdkMember) android.BpModule {
 	return ctx.SnapshotBuilder().AddPrebuiltModule(member, "prebuilt_systemserverclasspath_fragment")
 }

 func (s *systemServerClasspathFragmentMemberType) CreateVariantPropertiesStruct() android.SdkMemberProperties {
 	return &systemServerClasspathFragmentSdkMemberProperties{}
 }

 type systemServerClasspathFragmentSdkMemberProperties struct {
 	android.SdkMemberPropertiesBase

 	// List of system_server classpath jars, could be either java_library, or java_sdk_library.
 	//
 	// The order of this list matters as it is the order that is used in the SYSTEMSERVERCLASSPATH.
 	Contents []string

 	// List of jars that system_server loads dynamically using separate classloaders.
 	//
 	// The order does not matter.
 	Standalone_contents []string
 }

 func (s *systemServerClasspathFragmentSdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) {
 	module := variant.(*SystemServerClasspathModule)

 	s.Contents = module.properties.Contents
 	s.Standalone_contents = module.properties.Standalone_contents
 }

 func (s *systemServerClasspathFragmentSdkMemberProperties) AddToPropertySet(ctx android.SdkMemberContext, propertySet android.BpPropertySet) {
 	builder := ctx.SnapshotBuilder()
 	requiredMemberDependency := builder.SdkMemberReferencePropertyTag(true)

 	if len(s.Contents) > 0 {
 		propertySet.AddPropertyWithTag("contents", s.Contents, requiredMemberDependency)
 	}

 	if len(s.Standalone_contents) > 0 {
 		propertySet.AddPropertyWithTag("standalone_contents", s.Standalone_contents, requiredMemberDependency)
 	}
 }

 var _ android.SdkMemberType = (*systemServerClasspathFragmentMemberType)(nil)

 // A prebuilt version of the systemserverclasspath_fragment module.
 type prebuiltSystemServerClasspathModule struct {
 	SystemServerClasspathModule
 	prebuilt android.Prebuilt
 }

 func (module *prebuiltSystemServerClasspathModule) Prebuilt() *android.Prebuilt {
 	return &module.prebuilt
 }

 func (module *prebuiltSystemServerClasspathModule) Name() string {
 	return module.prebuilt.Name(module.ModuleBase.Name())
 }

 func (module *prebuiltSystemServerClasspathModule) RequiredFilesFromPrebuiltApex(ctx android.BaseModuleContext) []string {
 	return nil
 }

 var _ android.RequiredFilesFromPrebuiltApex = (*prebuiltSystemServerClasspathModule)(nil)

 func prebuiltSystemServerClasspathModuleFactory() android.Module {
 	m := &prebuiltSystemServerClasspathModule{}
 	m.AddProperties(&m.properties)
 	// This doesn't actually have any prebuilt files of its own so pass a placeholder for the srcs
 	// array.
 	android.InitPrebuiltModule(m, &[]string{"placeholder"})
 	android.InitApexModule(m)
 	android.InitSdkAwareModule(m)
 	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
 	return m
 }
	// Copyright 2021 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 java

	import (
	"android/soong/android"
	"android/soong/dexpreopt"

	"github.com/google/blueprint"
	)

	func init() {
	registerSystemserverClasspathBuildComponents(android.InitRegistrationContext)

	android.RegisterSdkMemberType(&systemServerClasspathFragmentMemberType{
	SdkMemberTypeBase: android.SdkMemberTypeBase{
	PropertyName: "systemserverclasspath_fragments",
	SupportsSdk: true,
	},
	})
	}

	func registerSystemserverClasspathBuildComponents(ctx android.RegistrationContext) {
	ctx.RegisterModuleType("platform_systemserverclasspath", platformSystemServerClasspathFactory)
	ctx.RegisterModuleType("systemserverclasspath_fragment", systemServerClasspathFactory)
	ctx.RegisterModuleType("prebuilt_systemserverclasspath_fragment", prebuiltSystemServerClasspathModuleFactory)
	}

	type platformSystemServerClasspathModule struct {
	android.ModuleBase

	ClasspathFragmentBase
	}

	func platformSystemServerClasspathFactory() android.Module {
	m := &platformSystemServerClasspathModule{}
	initClasspathFragment(m, SYSTEMSERVERCLASSPATH)
	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
	return m
	}

	func (p *platformSystemServerClasspathModule) AndroidMkEntries() (entries []android.AndroidMkEntries) {
	return p.classpathFragmentBase().androidMkEntries()
	}

	func (p *platformSystemServerClasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	configuredJars := p.configuredJars(ctx)
	classpathJars := configuredJarListToClasspathJars(ctx, configuredJars, p.classpathType)
	standaloneConfiguredJars := p.standaloneConfiguredJars(ctx)
	standaloneClasspathJars := configuredJarListToClasspathJars(ctx, standaloneConfiguredJars, STANDALONE_SYSTEMSERVER_JARS)
	configuredJars = configuredJars.AppendList(&standaloneConfiguredJars)
	classpathJars = append(classpathJars, standaloneClasspathJars...)
	p.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars)
	}

	func (p *platformSystemServerClasspathModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList {
	// TODO(satayev): include any apex jars that don't populate their classpath proto config.
	return dexpreopt.GetGlobalConfig(ctx).SystemServerJars
	}

	func (p *platformSystemServerClasspathModule) standaloneConfiguredJars(ctx android.ModuleContext) android.ConfiguredJarList {
	return dexpreopt.GetGlobalConfig(ctx).StandaloneSystemServerJars
	}

	type SystemServerClasspathModule struct {
	android.ModuleBase
	android.ApexModuleBase
	android.SdkBase

	ClasspathFragmentBase

	properties systemServerClasspathFragmentProperties

	// Collect the module directory for IDE info in java/jdeps.go.
	modulePaths []string
	}

	func (s *SystemServerClasspathModule) ShouldSupportSdkVersion(ctx android.BaseModuleContext, sdkVersion android.ApiLevel) error {
	return nil
	}

	type systemServerClasspathFragmentProperties struct {
	// List of system_server classpath jars, could be either java_library, or java_sdk_library.
	//
	// The order of this list matters as it is the order that is used in the SYSTEMSERVERCLASSPATH.
	Contents []string

	// List of jars that system_server loads dynamically using separate classloaders.
	//
	// The order does not matter.
	Standalone_contents []string
	}

	func systemServerClasspathFactory() android.Module {
	m := &SystemServerClasspathModule{}
	m.AddProperties(&m.properties)
	android.InitApexModule(m)
	android.InitSdkAwareModule(m)
	initClasspathFragment(m, SYSTEMSERVERCLASSPATH)
	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
	return m
	}

	func (s *SystemServerClasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	if len(s.properties.Contents) == 0 && len(s.properties.Standalone_contents) == 0 {
	ctx.PropertyErrorf("contents", "Either contents or standalone_contents needs to be non-empty")
	}

	configuredJars := s.configuredJars(ctx)
	classpathJars := configuredJarListToClasspathJars(ctx, configuredJars, s.classpathType)
	standaloneConfiguredJars := s.standaloneConfiguredJars(ctx)
	standaloneClasspathJars := configuredJarListToClasspathJars(ctx, standaloneConfiguredJars, STANDALONE_SYSTEMSERVER_JARS)
	configuredJars = configuredJars.AppendList(&standaloneConfiguredJars)
	classpathJars = append(classpathJars, standaloneClasspathJars...)
	s.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars)

	// Collect the module directory for IDE info in java/jdeps.go.
	s.modulePaths = append(s.modulePaths, ctx.ModuleDir())
	}

	func (s *SystemServerClasspathModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList {
	global := dexpreopt.GetGlobalConfig(ctx)

	possibleUpdatableModules := gatherPossibleApexModuleNamesAndStems(ctx, s.properties.Contents, systemServerClasspathFragmentContentDepTag)
	jars, unknown := global.ApexSystemServerJars.Filter(possibleUpdatableModules)
	// TODO(satayev): remove geotz ssc_fragment, since geotz is not part of SSCP anymore.
	_, unknown = android.RemoveFromList("geotz", unknown)
	// This module only exists in car products.
	// So ignore it even if it is not in PRODUCT_APEX_SYSTEM_SERVER_JARS.
	// TODO(b/203233647): Add better mechanism to make it optional.
	_, unknown = android.RemoveFromList("car-frameworks-service-module", unknown)

	// This module is optional, so it is not present in all products.
	// (See PRODUCT_ISOLATED_COMPILATION_ENABLED.)
	// So ignore it even if it is not in PRODUCT_APEX_SYSTEM_SERVER_JARS.
	// TODO(b/203233647): Add better mechanism to make it optional.
	_, unknown = android.RemoveFromList("service-compos", unknown)

	// TODO(satayev): for apex_test we want to include all contents unconditionally to classpaths
	// config. However, any test specific jars would not be present in ApexSystemServerJars. Instead,
	// we should check if we are creating a config for apex_test via ApexInfo and amend the values.
	// This is an exception to support end-to-end test for ApexdUnitTests, until such support exists.
	if android.InList("test_service-apexd", possibleUpdatableModules) {
	jars = jars.Append("com.android.apex.test_package", "test_service-apexd")
	} else if global.ApexSystemServerJars.Len() > 0 && len(unknown) > 0 && !android.IsModuleInVersionedSdk(ctx.Module()) {
	// For non test apexes, make sure that all contents are actually declared in make.
	ctx.ModuleErrorf("%s in contents must also be declared in PRODUCT_APEX_SYSTEM_SERVER_JARS", unknown)
	}

	return jars
	}

	func (s *SystemServerClasspathModule) standaloneConfiguredJars(ctx android.ModuleContext) android.ConfiguredJarList {
	global := dexpreopt.GetGlobalConfig(ctx)

	possibleUpdatableModules := gatherPossibleApexModuleNamesAndStems(ctx, s.properties.Standalone_contents, systemServerClasspathFragmentContentDepTag)
	jars, _ := global.ApexStandaloneSystemServerJars.Filter(possibleUpdatableModules)

	// TODO(jiakaiz): add a check to ensure that the contents are declared in make.

	return jars
	}

	type systemServerClasspathFragmentContentDependencyTag struct {
	blueprint.BaseDependencyTag
	}

	// The systemserverclasspath_fragment contents must never depend on prebuilts.
	func (systemServerClasspathFragmentContentDependencyTag) ReplaceSourceWithPrebuilt() bool {
	return false
	}

	// SdkMemberType causes dependencies added with this tag to be automatically added to the sdk as if
	// they were specified using java_systemserver_libs or java_sdk_libs.
	func (b systemServerClasspathFragmentContentDependencyTag) SdkMemberType(child android.Module) android.SdkMemberType {
	// If the module is a java_sdk_library then treat it as if it was specified in the java_sdk_libs
	// property, otherwise treat if it was specified in the java_systemserver_libs property.
	if javaSdkLibrarySdkMemberType.IsInstance(child) {
	return javaSdkLibrarySdkMemberType
	}

	return javaSystemserverLibsSdkMemberType
	}

	func (b systemServerClasspathFragmentContentDependencyTag) ExportMember() bool {
	return true
	}

	// Contents of system server fragments in an apex are considered to be directly in the apex, as if
	// they were listed in java_libs.
	func (systemServerClasspathFragmentContentDependencyTag) CopyDirectlyInAnyApex() {}

	// Contents of system server fragments require files from prebuilt apex files.
	func (systemServerClasspathFragmentContentDependencyTag) RequiresFilesFromPrebuiltApex() {}

	var _ android.ReplaceSourceWithPrebuilt = systemServerClasspathFragmentContentDepTag
	var _ android.SdkMemberDependencyTag = systemServerClasspathFragmentContentDepTag
	var _ android.CopyDirectlyInAnyApexTag = systemServerClasspathFragmentContentDepTag
	var _ android.RequiresFilesFromPrebuiltApexTag = systemServerClasspathFragmentContentDepTag

	// The tag used for the dependency between the systemserverclasspath_fragment module and its contents.
	var systemServerClasspathFragmentContentDepTag = systemServerClasspathFragmentContentDependencyTag{}

	func IsSystemServerClasspathFragmentContentDepTag(tag blueprint.DependencyTag) bool {
	return tag == systemServerClasspathFragmentContentDepTag
	}

	func (s *SystemServerClasspathModule) ComponentDepsMutator(ctx android.BottomUpMutatorContext) {
	module := ctx.Module()
	_, isSourceModule := module.(*SystemServerClasspathModule)
	var deps []string
	deps = append(deps, s.properties.Contents...)
	deps = append(deps, s.properties.Standalone_contents...)

	for _, name := range deps {
	// A systemserverclasspath_fragment must depend only on other source modules, while the
	// prebuilt_systemserverclasspath_fragment_fragment must only depend on other prebuilt modules.
	if !isSourceModule {
	name = android.PrebuiltNameFromSource(name)
	}
	ctx.AddDependency(module, systemServerClasspathFragmentContentDepTag, name)
	}
	}

	// Collect information for opening IDE project files in java/jdeps.go.
	func (s SystemServerClasspathModule) IDEInfo(dpInfo android.IdeInfo) {
	dpInfo.Deps = append(dpInfo.Deps, s.properties.Contents...)
	dpInfo.Deps = append(dpInfo.Deps, s.properties.Standalone_contents...)
	dpInfo.Paths = append(dpInfo.Paths, s.modulePaths...)
	}

	type systemServerClasspathFragmentMemberType struct {
	android.SdkMemberTypeBase
	}

	func (s *systemServerClasspathFragmentMemberType) AddDependencies(ctx android.SdkDependencyContext, dependencyTag blueprint.DependencyTag, names []string) {
	ctx.AddVariationDependencies(nil, dependencyTag, names...)
	}

	func (s *systemServerClasspathFragmentMemberType) IsInstance(module android.Module) bool {
	_, ok := module.(*SystemServerClasspathModule)
	return ok
	}

	func (s *systemServerClasspathFragmentMemberType) AddPrebuiltModule(ctx android.SdkMemberContext, member android.SdkMember) android.BpModule {
	return ctx.SnapshotBuilder().AddPrebuiltModule(member, "prebuilt_systemserverclasspath_fragment")
	}

	func (s *systemServerClasspathFragmentMemberType) CreateVariantPropertiesStruct() android.SdkMemberProperties {
	return &systemServerClasspathFragmentSdkMemberProperties{}
	}

	type systemServerClasspathFragmentSdkMemberProperties struct {
	android.SdkMemberPropertiesBase

	// List of system_server classpath jars, could be either java_library, or java_sdk_library.
	//
	// The order of this list matters as it is the order that is used in the SYSTEMSERVERCLASSPATH.
	Contents []string

	// List of jars that system_server loads dynamically using separate classloaders.
	//
	// The order does not matter.
	Standalone_contents []string
	}

	func (s *systemServerClasspathFragmentSdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) {
	module := variant.(*SystemServerClasspathModule)

	s.Contents = module.properties.Contents
	s.Standalone_contents = module.properties.Standalone_contents
	}

	func (s *systemServerClasspathFragmentSdkMemberProperties) AddToPropertySet(ctx android.SdkMemberContext, propertySet android.BpPropertySet) {
	builder := ctx.SnapshotBuilder()
	requiredMemberDependency := builder.SdkMemberReferencePropertyTag(true)

	if len(s.Contents) > 0 {
	propertySet.AddPropertyWithTag("contents", s.Contents, requiredMemberDependency)
	}

	if len(s.Standalone_contents) > 0 {
	propertySet.AddPropertyWithTag("standalone_contents", s.Standalone_contents, requiredMemberDependency)
	}
	}

	var _ android.SdkMemberType = (*systemServerClasspathFragmentMemberType)(nil)

	// A prebuilt version of the systemserverclasspath_fragment module.
	type prebuiltSystemServerClasspathModule struct {
	SystemServerClasspathModule
	prebuilt android.Prebuilt
	}

	func (module prebuiltSystemServerClasspathModule) Prebuilt() android.Prebuilt {
	return &module.prebuilt
	}

	func (module *prebuiltSystemServerClasspathModule) Name() string {
	return module.prebuilt.Name(module.ModuleBase.Name())
	}

	func (module *prebuiltSystemServerClasspathModule) RequiredFilesFromPrebuiltApex(ctx android.BaseModuleContext) []string {
	return nil
	}

	var _ android.RequiredFilesFromPrebuiltApex = (*prebuiltSystemServerClasspathModule)(nil)

	func prebuiltSystemServerClasspathModuleFactory() android.Module {
	m := &prebuiltSystemServerClasspathModule{}
	m.AddProperties(&m.properties)
	// This doesn't actually have any prebuilt files of its own so pass a placeholder for the srcs
	// array.
	android.InitPrebuiltModule(m, &[]string{"placeholder"})
	android.InitApexModule(m)
	android.InitSdkAwareModule(m)
	android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
	return m
	}