Merge "Reorganize soong_build/main.go ." (c5b3a172) · Commits · e / os / android_build_soong

cmd/soong_build/main.go

+91 −93

Original line number	Diff line number	Diff line
		@@ -24,7 +24,6 @@ import (
		"time"

		"android/soong/shared"

		"github.com/google/blueprint/bootstrap"

		"android/soong/android"
		@@ -65,16 +64,10 @@ func newNameResolver(config android.Config) *android.NameResolver {
		return android.NewNameResolver(exportFilter)
		}

		// bazelConversionRequested checks that the user is intending to convert
		// Blueprint to Bazel BUILD files.
		func bazelConversionRequested(configuration android.Config) bool {
		return configuration.IsEnvTrue("GENERATE_BAZEL_FILES")
		}

		func newContext(configuration android.Config) *android.Context {
		func newContext(configuration android.Config, prepareBuildActions bool) *android.Context {
		ctx := android.NewContext(configuration)
		ctx.Register()
		if !shouldPrepareBuildActions(configuration) {
		if !prepareBuildActions {
		configuration.SetStopBefore(bootstrap.StopBeforePrepareBuildActions)
		}
		ctx.SetNameInterface(newNameResolver(configuration))
		@@ -91,49 +84,12 @@ func newConfig(srcDir string) android.Config {
		return configuration
		}

		func main() {
		flag.Parse()

		shared.ReexecWithDelveMaybe(delveListen, delvePath)
		android.InitSandbox(topDir)
		android.InitEnvironment(shared.JoinPath(topDir, outDir, "soong.environment.available"))

		usedVariablesFile := shared.JoinPath(outDir, "soong.environment.used")
		// The top-level Blueprints file is passed as the first argument.
		srcDir := filepath.Dir(flag.Arg(0))
		var ctx *android.Context
		configuration := newConfig(srcDir)
		extraNinjaDeps := []string{
		configuration.ProductVariablesFileName,
		shared.JoinPath(outDir, "soong.environment.used"),
		}

		if configuration.Getenv("ALLOW_MISSING_DEPENDENCIES") == "true" {
		configuration.SetAllowMissingDependencies()
		}

		// These two are here so that we restart a non-debugged soong_build when the
		// user sets SOONG_DELVE the first time.
		configuration.Getenv("SOONG_DELVE")
		configuration.Getenv("SOONG_DELVE_PATH")
		if shared.IsDebugging() {
		// Add a non-existent file to the dependencies so that soong_build will rerun when the debugger is
		// enabled even if it completed successfully.
		extraNinjaDeps = append(extraNinjaDeps, filepath.Join(configuration.BuildDir(), "always_rerun_for_delve"))
		}

		bazelConversionRequested := bazelConversionRequested(configuration)
		if bazelConversionRequested {
		// Run the alternate pipeline of bp2build mutators and singleton to convert Blueprint to BUILD files
		// before everything else.
		runBp2Build(srcDir, configuration, extraNinjaDeps)
		} else if configuration.BazelContext.BazelEnabled() {
		// Bazel-enabled mode. Soong runs in two passes.
		// First pass: Analyze the build tree, but only store all bazel commands
		// needed to correctly evaluate the tree in the second pass.
		// TODO(cparsons): Don't output any ninja file, as the second pass will overwrite
		// the incorrect results from the first pass, and file I/O is expensive.
		firstCtx := newContext(configuration)
		func runMixedModeBuild(configuration android.Config, firstCtx *android.Context, extraNinjaDeps []string) {
		configuration.SetStopBefore(bootstrap.StopBeforeWriteNinja)
		bootstrap.Main(firstCtx.Context, configuration, false, extraNinjaDeps...)
		// Invoke bazel commands and save results for second pass.
		@@ -147,16 +103,12 @@ func main() {
		fmt.Fprintf(os.Stderr, "%s", err)
		os.Exit(1)
		}
		ctx = newContext(secondPassConfig)
		bootstrap.Main(ctx.Context, secondPassConfig, false, extraNinjaDeps...)
		} else {
		ctx = newContext(configuration)
		bootstrap.Main(ctx.Context, configuration, false, extraNinjaDeps...)
		secondCtx := newContext(secondPassConfig, true)
		bootstrap.Main(secondCtx.Context, secondPassConfig, false, extraNinjaDeps...)
		}

		// Convert the Soong module graph into Bazel BUILD files.
		if !bazelConversionRequested && bazelQueryViewDir != "" {
		// Run the code-generation phase to convert BazelTargetModules to BUILD files.
		func runQueryView(configuration android.Config, ctx *android.Context) {
		codegenContext := bp2build.NewCodegenContext(configuration, *ctx, bp2build.QueryView)
		absoluteQueryViewDir := shared.JoinPath(topDir, bazelQueryViewDir)
		if err := createBazelQueryView(codegenContext, absoluteQueryViewDir); err != nil {
		@@ -165,16 +117,16 @@ func main() {
		}
		}

		if !bazelConversionRequested && docFile != "" {
		func runSoongDocs(configuration android.Config, extraNinjaDeps []string) {
		ctx := newContext(configuration, false)
		bootstrap.Main(ctx.Context, configuration, false, extraNinjaDeps...)
		if err := writeDocs(ctx, configuration, docFile); err != nil {
		fmt.Fprintf(os.Stderr, "%s", err)
		os.Exit(1)
		}
		}

		// TODO(ccross): make this a command line argument. Requires plumbing through blueprint
		// to affect the command line of the primary builder.
		if !bazelConversionRequested && shouldPrepareBuildActions(configuration) {
		func writeMetrics(configuration android.Config) {
		metricsFile := filepath.Join(bootstrap.CmdlineBuildDir(), "soong_build_metrics.pb")
		err := android.WriteMetrics(configuration, metricsFile)
		if err != nil {
		@@ -183,11 +135,74 @@ func main() {
		}
		}

		if docFile == "" {
		// Let's not overwrite the used variables file when generating
		// documentation
		writeUsedVariablesFile(shared.JoinPath(topDir, usedVariablesFile), configuration)
		func doChosenActivity(configuration android.Config, extraNinjaDeps []string) {
		bazelConversionRequested := configuration.IsEnvTrue("GENERATE_BAZEL_FILES")
		mixedModeBuild := configuration.BazelContext.BazelEnabled()
		generateQueryView := bazelQueryViewDir != ""

		if bazelConversionRequested {
		// Run the alternate pipeline of bp2build mutators and singleton to convert
		// Blueprint to BUILD files before everything else.
		runBp2Build(configuration, extraNinjaDeps)
		return
		}

		ctx := newContext(configuration, !generateQueryView)
		if mixedModeBuild {
		runMixedModeBuild(configuration, ctx, extraNinjaDeps)
		} else {
		bootstrap.Main(ctx.Context, configuration, false, extraNinjaDeps...)
		}

		// Convert the Soong module graph into Bazel BUILD files.
		if generateQueryView {
		runQueryView(configuration, ctx)
		return
		}
		writeMetrics(configuration)
		}

		func main() {
		flag.Parse()

		shared.ReexecWithDelveMaybe(delveListen, delvePath)
		android.InitSandbox(topDir)
		android.InitEnvironment(shared.JoinPath(topDir, outDir, "soong.environment.available"))

		usedVariablesFile := shared.JoinPath(outDir, "soong.environment.used")
		// The top-level Blueprints file is passed as the first argument.
		srcDir := filepath.Dir(flag.Arg(0))
		configuration := newConfig(srcDir)
		extraNinjaDeps := []string{
		configuration.ProductVariablesFileName,
		shared.JoinPath(outDir, "soong.environment.used"),
		}

		if configuration.Getenv("ALLOW_MISSING_DEPENDENCIES") == "true" {
		configuration.SetAllowMissingDependencies()
		}

		// These two are here so that we restart a non-debugged soong_build when the
		// user sets SOONG_DELVE the first time.
		configuration.Getenv("SOONG_DELVE")
		configuration.Getenv("SOONG_DELVE_PATH")
		if shared.IsDebugging() {
		// Add a non-existent file to the dependencies so that soong_build will rerun when the debugger is
		// enabled even if it completed successfully.
		extraNinjaDeps = append(extraNinjaDeps, filepath.Join(configuration.BuildDir(), "always_rerun_for_delve"))
		}

		if docFile != "" {
		// We don't write an used variables file when generating documentation
		// because that is done from within the actual builds as a Ninja action and
		// thus it would overwrite the actual used variables file so this is
		// special-cased.
		runSoongDocs(configuration, extraNinjaDeps)
		return
		}

		doChosenActivity(configuration, extraNinjaDeps)
		writeUsedVariablesFile(shared.JoinPath(topDir, usedVariablesFile), configuration)
		}

		func writeUsedVariablesFile(path string, configuration android.Config) {
		@@ -218,7 +233,7 @@ func writeUsedVariablesFile(path string, configuration android.Config) {
		// Run Soong in the bp2build mode. This creates a standalone context that registers
		// an alternate pipeline of mutators and singletons specifically for generating
		// Bazel BUILD files instead of Ninja files.
		func runBp2Build(srcDir string, configuration android.Config, extraNinjaDeps []string) {
		func runBp2Build(configuration android.Config, extraNinjaDeps []string) {
		// Register an alternate set of singletons and mutators for bazel
		// conversion for Bazel conversion.
		bp2buildCtx := android.NewContext(configuration)
		@@ -233,7 +248,7 @@ func runBp2Build(srcDir string, configuration android.Config, extraNinjaDeps []s
		// configurations or variables, since those will generate different BUILD
		// files based on how the user has configured their tree.
		bp2buildCtx.SetModuleListFile(bootstrap.CmdlineModuleListFile())
		modulePaths, err := bp2buildCtx.ListModulePaths(srcDir)
		modulePaths, err := bp2buildCtx.ListModulePaths(configuration.SrcDir())
		if err != nil {
		panic(err)
		}
		@@ -283,20 +298,3 @@ func runBp2Build(srcDir string, configuration android.Config, extraNinjaDeps []s
		[]byte(fmt.Sprintf("%s: \\\n %s\n", ninjaFileName, extraNinjaDepsString)),
		0666)
		}

		// shouldPrepareBuildActions reads configuration and flags if build actions
		// should be generated.
		func shouldPrepareBuildActions(configuration android.Config) bool {
		// Generating Soong docs
		if docFile != "" {
		return false
		}

		// Generating a directory for Soong query (queryview)
		if bazelQueryViewDir != "" {
		return false
		}

		// Generating a directory for converted Bazel BUILD files
		return !bazelConversionRequested(configuration)
		}