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Add --bazel-mode and --bazel-mode-dev

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This allows "bazel mixed builds prod mode", in additional to reworking
the mechanism in which mixed builds dev mode is enabled.

As a followup, CI scripts will be migrated to use the new flags, as
USE_BAZEL_ANALYSIS=1 is deprecated.

Test: Manually ran --bazel-mode with an allowlist verifying that the
module alone was enabled
Test: Manually verified --bazel-mode and --bazel-mode-dev cause a build
failure

Change-Id: If0d34360e60452f428b05828f4ec7596b7cb619a
This commit is contained in:
Chris Parsons 2022-08-18 22:04:11 -04:00
parent 5e7c4756b5
commit ef615e5841
9 changed files with 123 additions and 64 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
android/allowlists/allowlists.go
View file

@ -595,4 +595,9 @@ var (
"prebuilt_platform-robolectric-4.5.1-prebuilt",
"prebuilt_currysrc_org.eclipse",
}
ProdMixedBuildsEnabledList = []string{
// This list left intentionally empty for now. Add specific module names
// to have them built by Bazel in Prod Mixed Builds mode.
}
)

10
android/bazel.go
View file

@ -219,16 +219,16 @@ type bp2BuildConversionAllowlist struct {
// in the synthetic Bazel workspace.
keepExistingBuildFile map[string]bool
// Per-module allowlist to always opt modules in of both bp2build and mixed builds.
// These modules are usually in directories with many other modules that are not ready for
// conversion.
// Per-module allowlist to always opt modules into both bp2build and Bazel Dev Mode mixed
// builds. These modules are usually in directories with many other modules that are not ready
// for conversion.
//
// A module can either be in this list or its directory allowlisted entirely
// in bp2buildDefaultConfig, but not both at the same time.
moduleAlwaysConvert map[string]bool
// Per-module-type allowlist to always opt modules in to both bp2build and mixed builds
// when they have the same type as one listed.
// Per-module-type allowlist to always opt modules in to both bp2build and
// Bazel Dev Mode mixed builds when they have the same type as one listed.
moduleTypeAlwaysConvert map[string]bool
// Per-module denylist to always opt modules out of bp2build conversion.

35
android/bazel_handler.go
View file

@ -343,18 +343,20 @@ func (m noopBazelContext) AqueryDepsets() []bazel.AqueryDepset {
}
func NewBazelContext(c *config) (BazelContext, error) {
if !c.IsMixedBuildsEnabled() {
return noopBazelContext{}, nil
}
p, err := bazelPathsFromConfig(c)
if err != nil {
return nil, err
}
// TODO(cparsons): Use a different allowlist depending on prod vs. dev
// bazel mode.
var modulesDefaultToBazel bool
disabledModules := map[string]bool{}
enabledModules := map[string]bool{}
switch c.BuildMode {
case BazelProdMode:
modulesDefaultToBazel = false
for _, enabledProdModule := range allowlists.ProdMixedBuildsEnabledList {
enabledModules[enabledProdModule] = true
}
case BazelDevMode:
modulesDefaultToBazel = true
// Don't use partially-converted cc_library targets in mixed builds,
// since mixed builds would generally rely on both static and shared
// variants of a cc_library.
@ -364,12 +366,21 @@ func NewBazelContext(c *config) (BazelContext, error) {
for _, disabledDevModule := range allowlists.MixedBuildsDisabledList {
disabledModules[disabledDevModule] = true
}
default:
return noopBazelContext{}, nil
}
p, err := bazelPathsFromConfig(c)
if err != nil {
return nil, err
}
return &bazelContext{
bazelRunner: &builtinBazelRunner{},
paths: p,
requests: make(map[cqueryKey]bool),
modulesDefaultToBazel: true,
modulesDefaultToBazel: modulesDefaultToBazel,
bazelEnabledModules: enabledModules,
bazelDisabledModules: disabledModules,
}, nil
}

13
android/config.go
View file

@ -96,7 +96,6 @@ const (
// Use bazel during analysis of build modules from an allowlist carefully
// curated by the build team to be proven stable.
// TODO(cparsons): Implement this mode.
BazelProdMode
)
@ -481,14 +480,6 @@ func NewConfig(moduleListFile string, buildMode SoongBuildMode, runGoTests bool,
config.AndroidFirstDeviceTarget = FirstTarget(config.Targets[Android], "lib64", "lib32")[0]
}
// Checking USE_BAZEL_ANALYSIS must be done here instead of in the caller, so
// that we can invoke IsEnvTrue (which also registers the env var as a
// dependency of the build).
// TODO(cparsons): Remove this hack once USE_BAZEL_ANALYSIS is removed.
if buildMode == AnalysisNoBazel && config.IsEnvTrue("USE_BAZEL_ANALYSIS") {
buildMode = BazelDevMode
}
config.BuildMode = buildMode
config.BazelContext, err = NewBazelContext(config)
config.bp2buildPackageConfig = GetBp2BuildAllowList()
@ -678,9 +669,7 @@ func (c *config) DeviceName() string {
// DeviceProduct returns the current product target. There could be multiple of
// these per device type.
//
// NOTE: Do not base conditional logic on this value. It may break product
//
// inheritance.
// NOTE: Do not base conditional logic on this value. It may break product inheritance.
func (c *config) DeviceProduct() string {
return *c.productVariables.DeviceProduct
}

6
cmd/soong_build/main.go
View file

@ -84,6 +84,8 @@ func init() {
flag.StringVar(&bp2buildMarker, "bp2build_marker", "", "If set, run bp2build, touch the specified marker file then exit")
flag.StringVar(&cmdlineArgs.OutFile, "o", "build.ninja", "the Ninja file to output")
flag.BoolVar(&cmdlineArgs.EmptyNinjaFile, "empty-ninja-file", false, "write out a 0-byte ninja file")
flag.BoolVar(&cmdlineArgs.BazelMode, "bazel-mode", false, "use bazel for analysis of certain modules")
flag.BoolVar(&cmdlineArgs.BazelModeDev, "bazel-mode-dev", false, "use bazel for analysis of a large number of modules (less stable)")
// Flags that probably shouldn't be flags of soong_build but we haven't found
// the time to remove them yet
@ -131,6 +133,10 @@ func newConfig(availableEnv map[string]string) android.Config {
buildMode = android.GenerateModuleGraph
} else if docFile != "" {
buildMode = android.GenerateDocFile
} else if cmdlineArgs.BazelModeDev {
buildMode = android.BazelDevMode
} else if cmdlineArgs.BazelMode {
buildMode = android.BazelProdMode
} else {
buildMode = android.AnalysisNoBazel
}

20
ui/build/build.go
View file

@ -110,6 +110,24 @@ const (
RunAllWithBazel = RunProductConfig | RunSoong | RunKati | RunKatiNinja | RunBazel
)
// checkBazelMode fails the build if there are conflicting arguments for which bazel
// build mode to use.
func checkBazelMode(ctx Context, config Config) {
// TODO(cparsons): Remove USE_BAZEL_ANALYSIS handling.
if config.Environment().IsEnvTrue("USE_BAZEL_ANALYSIS") {
if config.bazelProdMode || config.bazelDevMode {
ctx.Fatalf("USE_BAZEL_ANALYSIS is deprecated.\n" +
"Unset USE_BAZEL_ANALYSIS when using --bazel-mode or --bazel-mode-dev.")
} else {
config.bazelDevMode = true
}
}
if config.bazelProdMode && config.bazelDevMode {
ctx.Fatalf("Conflicting bazel mode.\n" +
"Do not specify both --bazel-mode and --bazel-mode-dev")
}
}
// checkProblematicFiles fails the build if existing Android.mk or CleanSpec.mk files are found at the root of the tree.
func checkProblematicFiles(ctx Context) {
files := []string{"Android.mk", "CleanSpec.mk"}
@ -221,6 +239,8 @@ func Build(ctx Context, config Config) {
defer waitForDist(ctx)
checkBazelMode(ctx, config)
// checkProblematicFiles aborts the build if Android.mk or CleanSpec.mk are found at the root of the tree.
checkProblematicFiles(ctx)

30
ui/build/config.go
View file

@ -99,7 +99,10 @@ type configImpl struct {
pathReplaced bool
// TODO(b/243077098): Remove useBazel.
useBazel bool
bazelProdMode bool
bazelDevMode bool
// During Bazel execution, Bazel cannot write outside OUT_DIR.
// So if DIST_DIR is set to an external dir (outside of OUT_DIR), we need to rig it temporarily and then migrate files at the end of the build.
@ -130,18 +133,6 @@ const (
BUILD_MODULES
)
type bazelBuildMode int
// Bazel-related build modes.
const (
// Don't use bazel at all.
noBazel bazelBuildMode = iota
// Generate synthetic build files and incorporate these files into a build which
// partially uses Bazel. Build metadata may come from Android.bp or BUILD files.
mixedBuild
)
// checkTopDir validates that the current directory is at the root directory of the source tree.
func checkTopDir(ctx Context) {
if _, err := os.Stat(srcDirFileCheck); err != nil {
@ -496,7 +487,7 @@ func buildConfig(config Config) *smpb.BuildConfig {
UseGoma: proto.Bool(config.UseGoma()),
UseRbe: proto.Bool(config.UseRBE()),
BazelAsNinja: proto.Bool(config.UseBazel()),
BazelMixedBuild: proto.Bool(config.bazelBuildMode() == mixedBuild),
BazelMixedBuild: proto.Bool(config.BazelBuildEnabled()),
}
c.Targets = append(c.Targets, config.arguments...)
@ -747,6 +738,10 @@ func (c *configImpl) parseArgs(ctx Context, args []string) {
c.skipSoongTests = true
} else if arg == "--mk-metrics" {
c.reportMkMetrics = true
} else if arg == "--bazel-mode" {
c.bazelProdMode = true
} else if arg == "--bazel-mode-dev" {
c.bazelDevMode = true
} else if len(arg) > 0 && arg[0] == '-' {
parseArgNum := func(def int) int {
if len(arg) > 2 {
@ -1134,16 +1129,13 @@ func (c *configImpl) UseRBE() bool {
return false
}
// TODO(b/243077098): Remove UseBazel.
func (c *configImpl) UseBazel() bool {
return c.useBazel
}
func (c *configImpl) bazelBuildMode() bazelBuildMode {
if c.Environment().IsEnvTrue("USE_BAZEL_ANALYSIS") {
return mixedBuild
} else {
return noBazel
}
func (c *configImpl) BazelBuildEnabled() bool {
return c.bazelProdMode || c.bazelDevMode
}
func (c *configImpl) StartRBE() bool {

39
ui/build/config_test.go
View file

@ -28,6 +28,7 @@ import (
"android/soong/ui/logger"
smpb "android/soong/ui/metrics/metrics_proto"
"android/soong/ui/status"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/proto"
)
@ -1005,6 +1006,8 @@ func TestBuildConfig(t *testing.T) {
environ Environment
arguments []string
useBazel bool
bazelDevMode bool
bazelProdMode bool
expectedBuildConfig *smpb.BuildConfig
}{
{
@ -1064,7 +1067,7 @@ func TestBuildConfig(t *testing.T) {
},
},
{
name: "bazel mixed build",
name: "bazel mixed build from env",
environ: Environment{"USE_BAZEL_ANALYSIS=1"},
expectedBuildConfig: &smpb.BuildConfig{
ForceUseGoma: proto.Bool(false),
@ -1074,6 +1077,30 @@ func TestBuildConfig(t *testing.T) {
BazelMixedBuild: proto.Bool(true),
},
},
{
name: "bazel mixed build from dev mode",
environ: Environment{},
bazelDevMode: true,
expectedBuildConfig: &smpb.BuildConfig{
ForceUseGoma: proto.Bool(false),
UseGoma: proto.Bool(false),
UseRbe: proto.Bool(false),
BazelAsNinja: proto.Bool(false),
BazelMixedBuild: proto.Bool(true),
},
},
{
name: "bazel mixed build from prod mode",
environ: Environment{},
bazelProdMode: true,
expectedBuildConfig: &smpb.BuildConfig{
ForceUseGoma: proto.Bool(false),
UseGoma: proto.Bool(false),
UseRbe: proto.Bool(false),
BazelAsNinja: proto.Bool(false),
BazelMixedBuild: proto.Bool(true),
},
},
{
name: "specified targets",
environ: Environment{},
@ -1094,9 +1121,9 @@ func TestBuildConfig(t *testing.T) {
"FORCE_USE_GOMA=1",
"USE_GOMA=1",
"USE_RBE=1",
"USE_BAZEL_ANALYSIS=1",
},
useBazel: true,
bazelDevMode: true,
expectedBuildConfig: &smpb.BuildConfig{
ForceUseGoma: proto.Bool(true),
UseGoma: proto.Bool(true),
@ -1107,17 +1134,23 @@ func TestBuildConfig(t *testing.T) {
},
}
ctx := testContext()
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
c := &configImpl{
environ: &tc.environ,
useBazel: tc.useBazel,
bazelDevMode: tc.bazelDevMode,
bazelProdMode: tc.bazelProdMode,
arguments: tc.arguments,
}
config := Config{c}
checkBazelMode(ctx, config)
actualBuildConfig := buildConfig(config)
if expected := tc.expectedBuildConfig; !proto.Equal(expected, actualBuildConfig) {
t.Errorf("Expected build config != actual build config: %#v != %#v", *expected, *actualBuildConfig)
t.Errorf("Build config mismatch.\n"+
"Expected build config: %#v\n"+
"Actual build config: %#v", prototext.Format(expected), prototext.Format(actualBuildConfig))
}
})
}

13
ui/build/soong.go
View file

@ -254,6 +254,12 @@ func bootstrapBlueprint(ctx Context, config Config) {
if config.EmptyNinjaFile() {
mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--empty-ninja-file")
}
if config.bazelProdMode {
mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode")
}
if config.bazelDevMode {
mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode-dev")
}
mainSoongBuildInvocation := primaryBuilderInvocation(
config,
@ -263,7 +269,7 @@ func bootstrapBlueprint(ctx Context, config Config) {
fmt.Sprintf("analyzing Android.bp files and generating ninja file at %s", config.SoongNinjaFile()),
)
if config.bazelBuildMode() == mixedBuild {
if config.BazelBuildEnabled() {
// Mixed builds call Bazel from soong_build and they therefore need the
// Bazel workspace to be available. Make that so by adding a dependency on
// the bp2build marker file to the action that invokes soong_build .
@ -373,9 +379,6 @@ func runSoong(ctx Context, config Config) {
// unused variables were changed?
envFile := filepath.Join(config.SoongOutDir(), availableEnvFile)
buildMode := config.bazelBuildMode()
integratedBp2Build := buildMode == mixedBuild
// This is done unconditionally, but does not take a measurable amount of time
bootstrapBlueprint(ctx, config)
@ -405,7 +408,7 @@ func runSoong(ctx Context, config Config) {
checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(soongBuildTag))
if integratedBp2Build || config.Bp2Build() {
if config.BazelBuildEnabled() || config.Bp2Build() {
checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(bp2buildTag))
}