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// Copyright 2017 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 (
"fmt"
"io"
"strings"
"github.com/google/blueprint"
"android/soong/android"
)
// OpenJDK 9 introduces the concept of "system modules", which replace the bootclasspath. This
// file will produce the rules necessary to convert each unique set of bootclasspath jars into
// system modules in a runtime image using the jmod and jlink tools.
func init() {
android.RegisterModuleType("java_system_modules", SystemModulesFactory)
pctx.SourcePathVariable("moduleInfoJavaPath", "build/soong/scripts/jars-to-module-info-java.sh")
}
var (
jarsTosystemModules = pctx.AndroidStaticRule("jarsTosystemModules", blueprint.RuleParams{
Command: `rm -rf ${outDir} ${workDir} && mkdir -p ${workDir}/jmod && ` +
`${moduleInfoJavaPath} ${moduleName} $in > ${workDir}/module-info.java && ` +
`${config.JavacCmd} --system=none --patch-module=java.base=${classpath} ${workDir}/module-info.java && ` +
`${config.SoongZipCmd} -jar -o ${workDir}/classes.jar -C ${workDir} -f ${workDir}/module-info.class && ` +
`${config.MergeZipsCmd} -j ${workDir}/module.jar ${workDir}/classes.jar $in && ` +
`${config.JmodCmd} create --module-version 9 --target-platform android ` +
` --class-path ${workDir}/module.jar ${workDir}/jmod/${moduleName}.jmod && ` +
`${config.JlinkCmd} --module-path ${workDir}/jmod --add-modules ${moduleName} --output ${outDir} && ` +
`cp ${config.JrtFsJar} ${outDir}/lib/`,
CommandDeps: []string{
"${moduleInfoJavaPath}",
"${config.JavacCmd}",
"${config.SoongZipCmd}",
"${config.MergeZipsCmd}",
"${config.JmodCmd}",
"${config.JlinkCmd}",
"${config.JrtFsJar}",
},
},
"moduleName", "classpath", "outDir", "workDir")
)
func TransformJarsToSystemModules(ctx android.ModuleContext, moduleName string, jars android.Paths) android.WritablePath {
outDir := android.PathForModuleOut(ctx, "system")
workDir := android.PathForModuleOut(ctx, "modules")
outputFile := android.PathForModuleOut(ctx, "system/lib/modules")
outputs := android.WritablePaths{
outputFile,
android.PathForModuleOut(ctx, "system/lib/jrt-fs.jar"),
android.PathForModuleOut(ctx, "system/release"),
}
ctx.Build(pctx, android.BuildParams{
Rule: jarsTosystemModules,
Description: "system modules",
Outputs: outputs,
Inputs: jars,
Args: map[string]string{
"moduleName": moduleName,
"classpath": strings.Join(jars.Strings(), ":"),
"workDir": workDir.String(),
"outDir": outDir.String(),
},
})
return outputFile
}
func SystemModulesFactory() android.Module {
module := &SystemModules{}
module.AddProperties(&module.properties)
android.InitAndroidArchModule(module, android.HostAndDeviceSupported, android.MultilibCommon)
return module
}
type SystemModules struct {
android.ModuleBase
properties SystemModulesProperties
outputFile android.Path
}
type SystemModulesProperties struct {
// List of java library modules that should be included in the system modules
Libs []string
// List of prebuilt jars that should be included in the system modules
Jars []string
// Sdk version that should be included in the system modules
Sdk_version *string
}
func (system *SystemModules) GenerateAndroidBuildActions(ctx android.ModuleContext) {
var jars android.Paths
ctx.VisitDirectDepsWithTag(libTag, func(module android.Module) {
dep, _ := module.(Dependency)
jars = append(jars, dep.HeaderJars()...)
})
jars = append(jars, android.PathsForModuleSrc(ctx, system.properties.Jars)...)
system.outputFile = TransformJarsToSystemModules(ctx, "java.base", jars)
}
func (system *SystemModules) DepsMutator(ctx android.BottomUpMutatorContext) {
ctx.AddVariationDependencies(nil, libTag, system.properties.Libs...)
}
func (system *SystemModules) AndroidMk() android.AndroidMkData {
return android.AndroidMkData{
Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
makevar := "SOONG_SYSTEM_MODULES_" + name
fmt.Fprintln(w)
fmt.Fprintln(w, makevar, ":=", system.outputFile.String())
fmt.Fprintln(w, ".KATI_READONLY", ":=", makevar)
fmt.Fprintln(w, name+":", "$("+makevar+")")
fmt.Fprintln(w, ".PHONY:", name)
fmt.Fprintln(w)
makevar = "SOONG_SYSTEM_MODULES_LIBS_" + name
fmt.Fprintln(w, makevar, ":=", strings.Join(system.properties.Libs, " "))
fmt.Fprintln(w, ".KATI_READONLY :=", makevar)
},
}
}
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