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// 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"
"github.com/google/blueprint/proptools"
)
func init() {
registerPlatformBootclasspathBuildComponents(android.InitRegistrationContext)
}
func registerPlatformBootclasspathBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("platform_bootclasspath", platformBootclasspathFactory)
ctx.FinalDepsMutators(func(ctx android.RegisterMutatorsContext) {
ctx.BottomUp("platform_bootclasspath_deps", platformBootclasspathDepsMutator)
})
}
type platformBootclasspathDependencyTag struct {
blueprint.BaseDependencyTag
name string
}
// Avoid having to make platform bootclasspath content visible to the platform bootclasspath.
//
// This is a temporary workaround to make it easier to migrate to platform bootclasspath with proper
// dependencies.
// TODO(b/177892522): Remove this and add needed visibility.
func (t platformBootclasspathDependencyTag) ExcludeFromVisibilityEnforcement() {
}
// The tag used for the dependency between the platform bootclasspath and any configured boot jars.
var platformBootclasspathModuleDepTag = platformBootclasspathDependencyTag{name: "module"}
// The tag used for the dependency between the platform bootclasspath and bootclasspath_fragments.
var platformBootclasspathFragmentDepTag = platformBootclasspathDependencyTag{name: "fragment"}
var _ android.ExcludeFromVisibilityEnforcementTag = platformBootclasspathDependencyTag{}
type platformBootclasspathModule struct {
android.ModuleBase
properties platformBootclasspathProperties
// The apex:module pairs obtained from the configured modules.
//
// Currently only for testing.
configuredModules []android.Module
// The apex:module pairs obtained from the fragments.
//
// Currently only for testing.
fragments []android.Module
}
// ApexVariantReference specifies a particular apex variant of a module.
type ApexVariantReference struct {
// The name of the module apex variant, i.e. the apex containing the module variant.
//
// If this is not specified then it defaults to "platform" which will cause a dependency to be
// added to the module's platform variant.
Apex *string
// The name of the module.
Module *string
}
type platformBootclasspathProperties struct {
// The names of the bootclasspath_fragment modules that form part of this
// platform_bootclasspath.
Fragments []ApexVariantReference
}
func platformBootclasspathFactory() android.Module {
m := &platformBootclasspathModule{}
m.AddProperties(&m.properties)
android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon)
return m
}
func (b *platformBootclasspathModule) DepsMutator(ctx android.BottomUpMutatorContext) {
if SkipDexpreoptBootJars(ctx) {
return
}
// Add a dependency onto the dex2oat tool which is needed for creating the boot image. The
// path is retrieved from the dependency by GetGlobalSoongConfig(ctx).
dexpreopt.RegisterToolDeps(ctx)
}
func platformBootclasspathDepsMutator(ctx android.BottomUpMutatorContext) {
m := ctx.Module()
if p, ok := m.(*platformBootclasspathModule); ok {
// Add dependencies on all the modules configured in the "art" boot image.
artImageConfig := genBootImageConfigs(ctx)[artBootImageName]
addDependenciesOntoBootImageModules(ctx, artImageConfig.modules)
// Add dependencies on all the modules configured in the "boot" boot image. That does not
// include modules configured in the "art" boot image.
bootImageConfig := p.getImageConfig(ctx)
addDependenciesOntoBootImageModules(ctx, bootImageConfig.modules)
// Add dependencies on all the updatable modules.
updatableModules := dexpreopt.GetGlobalConfig(ctx).UpdatableBootJars
addDependenciesOntoBootImageModules(ctx, updatableModules)
// Add dependencies on all the fragments.
addDependencyOntoApexVariants(ctx, "fragments", p.properties.Fragments, platformBootclasspathFragmentDepTag)
}
}
func addDependencyOntoApexVariants(ctx android.BottomUpMutatorContext, propertyName string, refs []ApexVariantReference, tag blueprint.DependencyTag) {
for i, ref := range refs {
apex := proptools.StringDefault(ref.Apex, "platform")
if ref.Module == nil {
ctx.PropertyErrorf(propertyName, "missing module name at position %d", i)
continue
}
name := proptools.String(ref.Module)
addDependencyOntoApexModulePair(ctx, apex, name, tag)
}
}
func addDependencyOntoApexModulePair(ctx android.BottomUpMutatorContext, apex string, name string, tag blueprint.DependencyTag) {
var variations []blueprint.Variation
if apex != "platform" {
// Pick the correct apex variant.
variations = []blueprint.Variation{
{Mutator: "apex", Variation: apex},
}
}
addedDep := false
if ctx.OtherModuleDependencyVariantExists(variations, name) {
ctx.AddFarVariationDependencies(variations, tag, name)
addedDep = true
}
// Add a dependency on the prebuilt module if it exists.
prebuiltName := android.PrebuiltNameFromSource(name)
if ctx.OtherModuleDependencyVariantExists(variations, prebuiltName) {
ctx.AddVariationDependencies(variations, tag, prebuiltName)
addedDep = true
}
// If no appropriate variant existing for this, so no dependency could be added, then it is an
// error, unless missing dependencies are allowed. The simplest way to handle that is to add a
// dependency that will not be satisfied and the default behavior will handle it.
if !addedDep {
ctx.AddFarVariationDependencies(variations, tag, name)
}
}
func addDependenciesOntoBootImageModules(ctx android.BottomUpMutatorContext, modules android.ConfiguredJarList) {
for i := 0; i < modules.Len(); i++ {
apex := modules.Apex(i)
name := modules.Jar(i)
addDependencyOntoApexModulePair(ctx, apex, name, platformBootclasspathModuleDepTag)
}
}
func (b *platformBootclasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
ctx.VisitDirectDepsIf(isActiveModule, func(module android.Module) {
tag := ctx.OtherModuleDependencyTag(module)
if tag == platformBootclasspathModuleDepTag {
b.configuredModules = append(b.configuredModules, module)
} else if tag == platformBootclasspathFragmentDepTag {
b.fragments = append(b.fragments, module)
}
})
// Nothing to do if skipping the dexpreopt of boot image jars.
if SkipDexpreoptBootJars(ctx) {
return
}
// Force the GlobalSoongConfig to be created and cached for use by the dex_bootjars
// GenerateSingletonBuildActions method as it cannot create it for itself.
dexpreopt.GetGlobalSoongConfig(ctx)
imageConfig := b.getImageConfig(ctx)
if imageConfig == nil {
return
}
// Construct the boot image info from the config.
info := BootImageInfo{imageConfig: imageConfig}
// Make it available for other modules.
ctx.SetProvider(BootImageInfoProvider, info)
}
func (b *platformBootclasspathModule) getImageConfig(ctx android.EarlyModuleContext) *bootImageConfig {
return defaultBootImageConfig(ctx)
}
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