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// Copyright 2024 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 systemfeatures
import (
"fmt"
"sort"
"strings"
"android/soong/android"
"android/soong/genrule"
"github.com/google/blueprint/proptools"
)
var (
pctx = android.NewPackageContext("android/soong/systemfeatures")
)
func init() {
registerSystemFeaturesComponents(android.InitRegistrationContext)
}
func registerSystemFeaturesComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("java_system_features_srcs", JavaSystemFeaturesSrcsFactory)
}
type javaSystemFeaturesSrcs struct {
android.ModuleBase
properties struct {
// The fully qualified class name for the generated code, e.g., com.android.Foo
Full_class_name string
// Whether to generate only a simple metadata class with details about the full API surface.
// This is useful for tools that rely on the mapping from feature names to their generated
// method names, but don't want the fully generated API class (e.g., for linting).
Metadata_only *bool
}
outputFiles android.WritablePaths
}
var _ genrule.SourceFileGenerator = (*javaSystemFeaturesSrcs)(nil)
var _ android.SourceFileProducer = (*javaSystemFeaturesSrcs)(nil)
func (m *javaSystemFeaturesSrcs) GenerateAndroidBuildActions(ctx android.ModuleContext) {
// Create a file name appropriate for the given fully qualified (w/ package) class name.
classNameParts := strings.Split(m.properties.Full_class_name, ".")
outputDir := android.PathForModuleGen(ctx)
outputFileName := classNameParts[len(classNameParts)-1] + ".java"
outputFile := android.PathForModuleGen(ctx, outputFileName).OutputPath
// Collect all RELEASE_SYSTEM_FEATURE_$K:$V build flags into a list of "$K:$V" pairs.
var features []string
for k, v := range ctx.Config().ProductVariables().BuildFlags {
if strings.HasPrefix(k, "RELEASE_SYSTEM_FEATURE_") {
shortFeatureName := strings.TrimPrefix(k, "RELEASE_SYSTEM_FEATURE_")
features = append(features, fmt.Sprintf("%s:%s", shortFeatureName, v))
}
}
// Ensure sorted outputs for consistency of flag ordering in ninja outputs.
sort.Strings(features)
rule := android.NewRuleBuilder(pctx, ctx)
rule.Command().Text("rm -rf").Text(outputDir.String())
rule.Command().Text("mkdir -p").Text(outputDir.String())
rule.Command().
BuiltTool("systemfeatures-gen-tool").
Flag(m.properties.Full_class_name).
FlagForEachArg("--feature=", features).
FlagWithArg("--readonly=", fmt.Sprint(ctx.Config().ReleaseUseSystemFeatureBuildFlags())).
FlagWithArg("--metadata-only=", fmt.Sprint(proptools.Bool(m.properties.Metadata_only))).
FlagWithOutput(" > ", outputFile)
rule.Build(ctx.ModuleName(), "Generating systemfeatures srcs filegroup")
m.outputFiles = append(m.outputFiles, outputFile)
}
func (m *javaSystemFeaturesSrcs) Srcs() android.Paths {
return m.outputFiles.Paths()
}
func (m *javaSystemFeaturesSrcs) GeneratedSourceFiles() android.Paths {
return m.outputFiles.Paths()
}
func (m *javaSystemFeaturesSrcs) GeneratedDeps() android.Paths {
return m.outputFiles.Paths()
}
func (m *javaSystemFeaturesSrcs) GeneratedHeaderDirs() android.Paths {
return nil
}
func JavaSystemFeaturesSrcsFactory() android.Module {
module := &javaSystemFeaturesSrcs{}
module.AddProperties(&module.properties)
module.properties.Metadata_only = proptools.BoolPtr(false)
android.InitAndroidModule(module)
return module
}
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