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- // Copyright 2021 The Android Open Source Project
- //
- // 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 snapshot
- import (
- "encoding/json"
- "fmt"
- "path/filepath"
- "sort"
- "github.com/google/blueprint"
- "github.com/google/blueprint/proptools"
- "android/soong/android"
- )
- //
- // The host_snapshot module creates a snapshot of the modules defined in
- // the deps property. The modules within the deps property (host tools)
- // are ones that return a valid path via HostToolPath() of the
- // HostToolProvider. The created snapshot contains the binaries and any
- // transitive PackagingSpecs of the included host tools, along with a JSON
- // meta file.
- //
- // The snapshot is installed into a source tree via
- // development/vendor_snapshot/update.py, the included modules are
- // provided as preferred prebuilts.
- //
- // To determine which tools to include in the host snapshot see
- // host_fake_snapshot.go.
- func init() {
- registerHostBuildComponents(android.InitRegistrationContext)
- }
- func registerHostBuildComponents(ctx android.RegistrationContext) {
- ctx.RegisterModuleType("host_snapshot", hostSnapshotFactory)
- }
- // Relative installation path
- type RelativeInstallPath interface {
- RelativeInstallPath() string
- }
- type hostSnapshot struct {
- android.ModuleBase
- android.PackagingBase
- zipFile android.OptionalPath
- installDir android.InstallPath
- }
- func hostSnapshotFactory() android.Module {
- module := &hostSnapshot{}
- initHostToolsModule(module)
- return module
- }
- func initHostToolsModule(module *hostSnapshot) {
- android.InitPackageModule(module)
- android.InitAndroidMultiTargetsArchModule(module, android.HostSupported, android.MultilibCommon)
- }
- var dependencyTag = struct {
- blueprint.BaseDependencyTag
- android.InstallAlwaysNeededDependencyTag
- android.PackagingItemAlwaysDepTag
- }{}
- func (f *hostSnapshot) DepsMutator(ctx android.BottomUpMutatorContext) {
- f.AddDeps(ctx, dependencyTag)
- }
- func (f *hostSnapshot) installFileName() string {
- return f.Name() + ".zip"
- }
- // Create zipfile with JSON description, notice files... for dependent modules
- func (f *hostSnapshot) CreateMetaData(ctx android.ModuleContext, fileName string) android.OutputPath {
- var jsonData []SnapshotJsonFlags
- var metaPaths android.Paths
- metaZipFile := android.PathForModuleOut(ctx, fileName).OutputPath
- // Create JSON file based on the direct dependencies
- ctx.VisitDirectDeps(func(dep android.Module) {
- desc := hostBinJsonDesc(dep)
- if desc != nil {
- jsonData = append(jsonData, *desc)
- }
- if len(dep.EffectiveLicenseFiles()) > 0 {
- noticeFile := android.PathForModuleOut(ctx, "NOTICE_FILES", dep.Name()+".txt").OutputPath
- android.CatFileRule(ctx, dep.EffectiveLicenseFiles(), noticeFile)
- metaPaths = append(metaPaths, noticeFile)
- }
- })
- // Sort notice paths and json data for repeatble build
- sort.Slice(jsonData, func(i, j int) bool {
- return (jsonData[i].ModuleName < jsonData[j].ModuleName)
- })
- sort.Slice(metaPaths, func(i, j int) bool {
- return (metaPaths[i].String() < metaPaths[j].String())
- })
- marsh, err := json.Marshal(jsonData)
- if err != nil {
- ctx.ModuleErrorf("host snapshot json marshal failure: %#v", err)
- return android.OutputPath{}
- }
- jsonZipFile := android.PathForModuleOut(ctx, "host_snapshot.json").OutputPath
- metaPaths = append(metaPaths, jsonZipFile)
- rspFile := android.PathForModuleOut(ctx, "host_snapshot.rsp").OutputPath
- android.WriteFileRule(ctx, jsonZipFile, string(marsh))
- builder := android.NewRuleBuilder(pctx, ctx)
- builder.Command().
- BuiltTool("soong_zip").
- FlagWithArg("-C ", android.PathForModuleOut(ctx).OutputPath.String()).
- FlagWithOutput("-o ", metaZipFile).
- FlagWithRspFileInputList("-r ", rspFile, metaPaths)
- builder.Build("zip_meta", fmt.Sprintf("zipping meta data for %s", ctx.ModuleName()))
- return metaZipFile
- }
- // Create the host tool zip file
- func (f *hostSnapshot) GenerateAndroidBuildActions(ctx android.ModuleContext) {
- // Create a zip file for the binaries, and a zip of the meta data, then merge zips
- depsZipFile := android.PathForModuleOut(ctx, f.Name()+"_deps.zip").OutputPath
- modsZipFile := android.PathForModuleOut(ctx, f.Name()+"_mods.zip").OutputPath
- outputFile := android.PathForModuleOut(ctx, f.installFileName()).OutputPath
- f.installDir = android.PathForModuleInstall(ctx)
- f.CopyDepsToZip(ctx, depsZipFile)
- builder := android.NewRuleBuilder(pctx, ctx)
- builder.Command().
- BuiltTool("zip2zip").
- FlagWithInput("-i ", depsZipFile).
- FlagWithOutput("-o ", modsZipFile).
- Text("**/*:" + proptools.ShellEscape(f.installDir.String()))
- metaZipFile := f.CreateMetaData(ctx, f.Name()+"_meta.zip")
- builder.Command().
- BuiltTool("merge_zips").
- Output(outputFile).
- Input(metaZipFile).
- Input(modsZipFile)
- builder.Build("manifest", fmt.Sprintf("Adding manifest %s", f.installFileName()))
- zip := ctx.InstallFile(f.installDir, f.installFileName(), outputFile)
- f.zipFile = android.OptionalPathForPath(zip)
- }
- // Implements android.AndroidMkEntriesProvider
- func (f *hostSnapshot) AndroidMkEntries() []android.AndroidMkEntries {
- if !f.zipFile.Valid() {
- return []android.AndroidMkEntries{}
- }
- return []android.AndroidMkEntries{android.AndroidMkEntries{
- Class: "ETC",
- OutputFile: f.zipFile,
- DistFiles: android.MakeDefaultDistFiles(f.zipFile.Path()),
- ExtraEntries: []android.AndroidMkExtraEntriesFunc{
- func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
- entries.SetString("LOCAL_MODULE_PATH", f.installDir.String())
- entries.SetString("LOCAL_INSTALLED_MODULE_STEM", f.installFileName())
- },
- },
- }}
- }
- // Get host tools path and relative install string helpers
- func hostBinToolPath(m android.Module) android.OptionalPath {
- if provider, ok := m.(android.HostToolProvider); ok {
- return provider.HostToolPath()
- }
- return android.OptionalPath{}
- }
- func hostRelativePathString(m android.Module) string {
- var outString string
- if rel, ok := m.(RelativeInstallPath); ok {
- outString = rel.RelativeInstallPath()
- }
- return outString
- }
- // Create JSON description for given module, only create descriptions for binary modueles which
- // provide a valid HostToolPath
- func hostBinJsonDesc(m android.Module) *SnapshotJsonFlags {
- path := hostBinToolPath(m)
- relPath := hostRelativePathString(m)
- if path.Valid() && path.String() != "" {
- return &SnapshotJsonFlags{
- ModuleName: m.Name(),
- ModuleStemName: filepath.Base(path.String()),
- Filename: path.String(),
- Required: append(m.HostRequiredModuleNames(), m.RequiredModuleNames()...),
- RelativeInstallPath: relPath,
- }
- }
- return nil
- }
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