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- // Copyright 2023 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 aconfig
- import (
- "android/soong/android"
- "fmt"
- "github.com/google/blueprint"
- "strings"
- )
- type DeclarationsModule struct {
- android.ModuleBase
- android.DefaultableModuleBase
- // Properties for "aconfig_declarations"
- properties struct {
- // aconfig files, relative to this Android.bp file
- Srcs []string `android:"path"`
- // Release config flag package
- Package string
- // Values from TARGET_RELEASE / RELEASE_ACONFIG_VALUE_SETS
- Values []string `blueprint:"mutated"`
- }
- intermediatePath android.WritablePath
- }
- func DeclarationsFactory() android.Module {
- module := &DeclarationsModule{}
- android.InitAndroidModule(module)
- android.InitDefaultableModule(module)
- module.AddProperties(&module.properties)
- // TODO: bp2build
- //android.InitBazelModule(module)
- return module
- }
- type implicitValuesTagType struct {
- blueprint.BaseDependencyTag
- }
- var implicitValuesTag = implicitValuesTagType{}
- func (module *DeclarationsModule) DepsMutator(ctx android.BottomUpMutatorContext) {
- // Validate Properties
- if len(module.properties.Srcs) == 0 {
- ctx.PropertyErrorf("srcs", "missing source files")
- return
- }
- if len(module.properties.Package) == 0 {
- ctx.PropertyErrorf("package", "missing package property")
- }
- // Add a dependency on the aconfig_value_sets defined in
- // RELEASE_ACONFIG_VALUE_SETS, and add any aconfig_values that
- // match our package.
- valuesFromConfig := ctx.Config().ReleaseAconfigValueSets()
- ctx.AddDependency(ctx.Module(), implicitValuesTag, valuesFromConfig...)
- }
- func (module *DeclarationsModule) OutputFiles(tag string) (android.Paths, error) {
- switch tag {
- case "":
- // The default output of this module is the intermediates format, which is
- // not installable and in a private format that no other rules can handle
- // correctly.
- return []android.Path{module.intermediatePath}, nil
- default:
- return nil, fmt.Errorf("unsupported aconfig_declarations module reference tag %q", tag)
- }
- }
- func joinAndPrefix(prefix string, values []string) string {
- var sb strings.Builder
- for _, v := range values {
- sb.WriteString(prefix)
- sb.WriteString(v)
- }
- return sb.String()
- }
- // Provider published by aconfig_value_set
- type declarationsProviderData struct {
- Package string
- IntermediatePath android.WritablePath
- }
- var declarationsProviderKey = blueprint.NewProvider(declarationsProviderData{})
- func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
- // Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
- ctx.VisitDirectDeps(func(dep android.Module) {
- if !ctx.OtherModuleHasProvider(dep, valueSetProviderKey) {
- // Other modules get injected as dependencies too, for example the license modules
- return
- }
- depData := ctx.OtherModuleProvider(dep, valueSetProviderKey).(valueSetProviderData)
- valuesFiles, ok := depData.AvailablePackages[module.properties.Package]
- if ok {
- for _, path := range valuesFiles {
- module.properties.Values = append(module.properties.Values, path.String())
- }
- }
- })
- // Intermediate format
- inputFiles := android.PathsForModuleSrc(ctx, module.properties.Srcs)
- intermediatePath := android.PathForModuleOut(ctx, "intermediate.pb")
- ctx.Build(pctx, android.BuildParams{
- Rule: aconfigRule,
- Inputs: inputFiles,
- Output: intermediatePath,
- Description: "aconfig_declarations",
- Args: map[string]string{
- "release_version": ctx.Config().ReleaseVersion(),
- "package": module.properties.Package,
- "values": joinAndPrefix(" --values ", module.properties.Values),
- },
- })
- ctx.SetProvider(declarationsProviderKey, declarationsProviderData{
- Package: module.properties.Package,
- IntermediatePath: intermediatePath,
- })
- }
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