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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 (
"fmt"
"strings"
"android/soong/android"
"github.com/google/blueprint"
)
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"`
// 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
}
func DeclarationsFactory() android.Module {
module := &DeclarationsModule{}
android.InitAndroidModule(module)
android.InitDefaultableModule(module)
module.AddProperties(&module.properties)
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")
}
// TODO(b/311155208): Add mandatory check for container after all pre-existing
// ones are changed.
// 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()
if len(valuesFromConfig) > 0 {
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()
}
func optionalVariable(prefix string, value string) string {
var sb strings.Builder
if value != "" {
sb.WriteString(prefix)
sb.WriteString(value)
}
return sb.String()
}
func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
// Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
valuesFiles := make([]android.Path, 0)
ctx.VisitDirectDeps(func(dep android.Module) {
if depData, ok := android.OtherModuleProvider(ctx, dep, valueSetProviderKey); ok {
paths, ok := depData.AvailablePackages[module.properties.Package]
if ok {
valuesFiles = append(valuesFiles, paths...)
for _, path := range paths {
module.properties.Values = append(module.properties.Values, path.String())
}
}
}
})
// Intermediate format
declarationFiles := android.PathsForModuleSrc(ctx, module.properties.Srcs)
intermediateCacheFilePath := android.PathForModuleOut(ctx, "intermediate.pb")
defaultPermission := ctx.Config().ReleaseAconfigFlagDefaultPermission()
inputFiles := make([]android.Path, len(declarationFiles))
copy(inputFiles, declarationFiles)
inputFiles = append(inputFiles, valuesFiles...)
ctx.Build(pctx, android.BuildParams{
Rule: aconfigRule,
Output: intermediateCacheFilePath,
Inputs: inputFiles,
Description: "aconfig_declarations",
Args: map[string]string{
"release_version": ctx.Config().ReleaseVersion(),
"package": module.properties.Package,
"declarations": android.JoinPathsWithPrefix(declarationFiles, "--declarations "),
"values": joinAndPrefix(" --values ", module.properties.Values),
"default-permission": optionalVariable(" --default-permission ", defaultPermission),
},
})
intermediateDumpFilePath := android.PathForModuleOut(ctx, "intermediate.txt")
ctx.Build(pctx, android.BuildParams{
Rule: aconfigTextRule,
Output: intermediateDumpFilePath,
Inputs: android.Paths{intermediateCacheFilePath},
Description: "aconfig_text",
})
android.SetProvider(ctx, android.AconfigDeclarationsProviderKey, android.AconfigDeclarationsProviderData{
Package: module.properties.Package,
Container: module.properties.Container,
Exportable: module.properties.Exportable,
IntermediateCacheOutputPath: intermediateCacheFilePath,
IntermediateDumpOutputPath: intermediateDumpFilePath,
})
}
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