Merge "Handle missing dependencies in mixed builds"

android/bazel.go

@@ -46,6 +46,10 @@ const (
 	// that is not a platform incompatibility. Example: the module-type is not
 	// enabled, or is not bp2build-converted.
 	ModuleIncompatibility
+
+	// Missing dependencies. We can't query Bazel for modules if it has missing dependencies, there
+	// will be failures.
+	ModuleMissingDeps
 )
 
 // FileGroupAsLibrary describes a filegroup module that is converted to some library
@@ -367,16 +371,26 @@ func GetBp2BuildAllowList() Bp2BuildConversionAllowlist {
 // As a side effect, calling this method will also log whether this module is
 // mixed build enabled for metrics reporting.
 func MixedBuildsEnabled(ctx BaseModuleContext) MixedBuildEnabledStatus {
-	module := ctx.Module()
-	apexInfo := ctx.Provider(ApexInfoProvider).(ApexInfo)
-	withinApex := !apexInfo.IsForPlatform()
-
 	platformIncompatible := isPlatformIncompatible(ctx.Os(), ctx.Arch().ArchType)
 	if platformIncompatible {
 		ctx.Config().LogMixedBuild(ctx, false)
 		return TechnicalIncompatibility
 	}
 
+	if ctx.Config().AllowMissingDependencies() {
+		missingDeps := ctx.getMissingDependencies()
+		// If there are missing dependencies, querying Bazel will fail. Soong instead fails at execution
+		// time, not loading/analysis. disable mixed builds and fall back to Soong to maintain that
+		// behavior.
+		if len(missingDeps) > 0 {
+			ctx.Config().LogMixedBuild(ctx, false)
+			return ModuleMissingDeps
+		}
+	}
+
+	module := ctx.Module()
+	apexInfo := ctx.Provider(ApexInfoProvider).(ApexInfo)
+	withinApex := !apexInfo.IsForPlatform()
 	mixedBuildEnabled := ctx.Config().IsMixedBuildsEnabled() &&
 		module.Enabled() &&
 		convertedToBazel(ctx, module) &&

android/bazel_handler.go

@@ -74,14 +74,12 @@ var (
 	}
 )
 
-func init() {
-	RegisterMixedBuildsMutator(InitRegistrationContext)
+func registerMixedBuildsMutator(ctx RegisterMutatorsContext) {
+	ctx.BottomUp("mixed_builds_prep", mixedBuildsPrepareMutator).Parallel()
 }
 
 func RegisterMixedBuildsMutator(ctx RegistrationContext) {
-	ctx.FinalDepsMutators(func(ctx RegisterMutatorsContext) {
-		ctx.BottomUp("mixed_builds_prep", mixedBuildsPrepareMutator).Parallel()
-	})
+	ctx.FinalDepsMutators(registerMixedBuildsMutator)
 }
 
 func mixedBuildsPrepareMutator(ctx BottomUpMutatorContext) {

android/bazel_test.go

@@ -436,3 +436,150 @@ func TestShouldKeepExistingBuildFileForDir(t *testing.T) {
 		}
 	}
 }
+
+type mixedBuildModule struct {
+	ModuleBase
+	BazelModuleBase
+	props struct {
+		Deps                     []string
+		Mixed_build_incompatible *bool
+		QueuedBazelCall          bool `blueprint:"mutated"`
+	}
+}
+
+type mixedBuildModuleInfo struct {
+	QueuedBazelCall bool
+}
+
+var mixedBuildModuleProvider = blueprint.NewProvider(mixedBuildModuleInfo{})
+
+func mixedBuildModuleFactory() Module {
+	m := &mixedBuildModule{}
+	m.AddProperties(&m.props)
+	InitAndroidArchModule(m, HostAndDeviceDefault, MultilibBoth)
+	InitBazelModule(m)
+
+	return m
+}
+
+func (m *mixedBuildModule) ConvertWithBp2build(ctx TopDownMutatorContext) {
+}
+
+func (m *mixedBuildModule) DepsMutator(ctx BottomUpMutatorContext) {
+	ctx.AddDependency(ctx.Module(), installDepTag{}, m.props.Deps...)
+}
+
+func (m *mixedBuildModule) GenerateAndroidBuildActions(ctx ModuleContext) {
+}
+
+func (m *mixedBuildModule) IsMixedBuildSupported(ctx BaseModuleContext) bool {
+	return !proptools.Bool(m.props.Mixed_build_incompatible)
+}
+
+func (m *mixedBuildModule) QueueBazelCall(ctx BaseModuleContext) {
+	m.props.QueuedBazelCall = true
+}
+
+func (m *mixedBuildModule) ProcessBazelQueryResponse(ctx ModuleContext) {
+	ctx.SetProvider(mixedBuildModuleProvider, mixedBuildModuleInfo{
+		QueuedBazelCall: m.props.QueuedBazelCall,
+	})
+}
+
+var prepareForMixedBuildTests = FixtureRegisterWithContext(func(ctx RegistrationContext) {
+	ctx.RegisterModuleType("deps", mixedBuildModuleFactory)
+	RegisterMixedBuildsMutator(ctx)
+})
+
+func TestMixedBuildsEnabledForType(t *testing.T) {
+	baseBp := `
+	deps {
+		name: "foo",
+		deps: ["bar"],
+		target: { windows: { enabled: true } },
+		%s
+	}
+`
+	depBp := `
+	deps {
+		name: "bar",
+		target: {
+			windows: {
+				enabled: true,
+			},
+		},
+	}
+`
+	testCases := []struct {
+		desc               string
+		variant            *string
+		missingDeps        bool
+		extraBpInfo        string
+		mixedBuildsEnabled bool
+	}{
+		{
+			desc:               "mixed builds works",
+			mixedBuildsEnabled: true,
+			extraBpInfo:        `bazel_module: { bp2build_available: true },`,
+		},
+		{
+			desc:               "missing deps",
+			missingDeps:        true,
+			mixedBuildsEnabled: false,
+			extraBpInfo:        `bazel_module: { bp2build_available: true },`,
+		},
+		{
+			desc:               "windows no mixed builds",
+			mixedBuildsEnabled: false,
+			variant:            proptools.StringPtr("windows_x86"),
+			extraBpInfo:        `bazel_module: { bp2build_available: true },`,
+		},
+		{
+			desc:               "mixed builds disabled by type",
+			mixedBuildsEnabled: false,
+			extraBpInfo: `mixed_build_incompatible: true,
+		bazel_module: { bp2build_available: true },`,
+		},
+		{
+			desc:               "mixed builds not bp2build available",
+			mixedBuildsEnabled: false,
+			extraBpInfo:        `bazel_module: { bp2build_available: false },`,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			handlers := GroupFixturePreparers(
+				prepareForMixedBuildTests,
+				PrepareForTestWithArchMutator,
+				FixtureModifyConfig(func(config Config) {
+					config.BazelContext = MockBazelContext{
+						OutputBaseDir: "base",
+					}
+					config.Targets[Windows] = []Target{
+						{Windows, Arch{ArchType: X86_64}, NativeBridgeDisabled, "", "", true},
+						{Windows, Arch{ArchType: X86}, NativeBridgeDisabled, "", "", true},
+					}
+				}),
+			)
+			bp := fmt.Sprintf(baseBp, tc.extraBpInfo)
+			if tc.missingDeps {
+				handlers = GroupFixturePreparers(
+					handlers,
+					PrepareForTestWithAllowMissingDependencies,
+				)
+			} else {
+				bp += depBp
+			}
+			result := handlers.RunTestWithBp(t, bp)
+
+			variant := proptools.StringDefault(tc.variant, "android_arm64_armv8-a")
+
+			m := result.ModuleForTests("foo", variant)
+			mixedBuildModuleInfo := result.TestContext.ModuleProvider(m.Module(), mixedBuildModuleProvider).(mixedBuildModuleInfo)
+			if w, g := tc.mixedBuildsEnabled, mixedBuildModuleInfo.QueuedBazelCall; w != g {
+				t.Errorf("Expected mixed builds enabled %t, got mixed builds enabled %t", w, g)
+			}
+		})
+	}
+}

android/module.go

@@ -354,6 +354,10 @@ type BaseModuleContext interface {
 
 	AddMissingDependencies(missingDeps []string)
 
+	// getMissingDependencies returns the list of missing dependencies.
+	// Calling this function prevents adding new dependencies.
+	getMissingDependencies() []string
+
 	// AddUnconvertedBp2buildDep stores module name of a direct dependency that was not converted via bp2build
 	AddUnconvertedBp2buildDep(dep string)
 
@@ -939,7 +943,8 @@ type commonProperties struct {
 
 	NamespaceExportedToMake bool `blueprint:"mutated"`
 
-	MissingDeps []string `blueprint:"mutated"`
+	MissingDeps        []string `blueprint:"mutated"`
+	CheckedMissingDeps bool     `blueprint:"mutated"`
 
 	// Name and variant strings stored by mutators to enable Module.String()
 	DebugName       string   `blueprint:"mutated"`
@@ -2862,6 +2867,20 @@ func (b *baseModuleContext) AddMissingDependencies(deps []string) {
 	}
 }
 
+func (b *baseModuleContext) checkedMissingDeps() bool {
+	return b.Module().base().commonProperties.CheckedMissingDeps
+}
+
+func (b *baseModuleContext) getMissingDependencies() []string {
+	checked := &b.Module().base().commonProperties.CheckedMissingDeps
+	*checked = true
+	var missingDeps []string
+	missingDeps = append(missingDeps, b.Module().base().commonProperties.MissingDeps...)
+	missingDeps = append(missingDeps, b.bp.EarlyGetMissingDependencies()...)
+	missingDeps = FirstUniqueStrings(missingDeps)
+	return missingDeps
+}
+
 type AllowDisabledModuleDependency interface {
 	blueprint.DependencyTag
 	AllowDisabledModuleDependency(target Module) bool

android/mutator.go

@@ -67,6 +67,8 @@ func registerMutatorsForBazelConversion(ctx *Context, bp2buildMutators []Registe
 // collateGloballyRegisteredMutators constructs the list of mutators that have been registered
 // with the InitRegistrationContext and will be used at runtime.
 func collateGloballyRegisteredMutators() sortableComponents {
+	// ensure mixed builds mutator is the last mutator
+	finalDeps = append(finalDeps, registerMixedBuildsMutator)
 	return collateRegisteredMutators(preArch, preDeps, postDeps, finalDeps)
 }
 
@@ -885,10 +887,16 @@ func (b *bottomUpMutatorContext) Rename(name string) {
 }
 
 func (b *bottomUpMutatorContext) AddDependency(module blueprint.Module, tag blueprint.DependencyTag, name ...string) []blueprint.Module {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 	return b.bp.AddDependency(module, tag, name...)
 }
 
 func (b *bottomUpMutatorContext) AddReverseDependency(module blueprint.Module, tag blueprint.DependencyTag, name string) {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 	b.bp.AddReverseDependency(module, tag, name)
 }
 
@@ -938,11 +946,17 @@ func (b *bottomUpMutatorContext) SetDefaultDependencyVariation(variation *string
 
 func (b *bottomUpMutatorContext) AddVariationDependencies(variations []blueprint.Variation, tag blueprint.DependencyTag,
 	names ...string) []blueprint.Module {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 	return b.bp.AddVariationDependencies(variations, tag, names...)
 }
 
 func (b *bottomUpMutatorContext) AddFarVariationDependencies(variations []blueprint.Variation,
 	tag blueprint.DependencyTag, names ...string) []blueprint.Module {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 
 	return b.bp.AddFarVariationDependencies(variations, tag, names...)
 }
@@ -952,10 +966,16 @@ func (b *bottomUpMutatorContext) AddInterVariantDependency(tag blueprint.Depende
 }
 
 func (b *bottomUpMutatorContext) ReplaceDependencies(name string) {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 	b.bp.ReplaceDependencies(name)
 }
 
 func (b *bottomUpMutatorContext) ReplaceDependenciesIf(name string, predicate blueprint.ReplaceDependencyPredicate) {
+	if b.baseModuleContext.checkedMissingDeps() {
+		panic("Adding deps not allowed after checking for missing deps")
+	}
 	b.bp.ReplaceDependenciesIf(name, predicate)
 }