bp2build converter for ndk_library

ndk_libary will be converted to a cc_stub_suite target. Its api_surface
attribute will be publicapi

The headers corresponding to this stub target will be added in a followup bug
(tracked in b/300504837)

Bug: 298085502
Test: Added a unit test
Change-Id: If9745083b18e0bcf5ecb89229a0f709b949d401c

bp2build/cc_library_conversion_test.go

@@ -65,6 +65,7 @@ func registerCcLibraryModuleTypes(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("cc_prebuilt_library_static", cc.PrebuiltStaticLibraryFactory)
 	ctx.RegisterModuleType("cc_library_headers", cc.LibraryHeaderFactory)
 	ctx.RegisterModuleType("aidl_library", aidl_library.AidlLibraryFactory)
+	ctx.RegisterModuleType("ndk_library", cc.NdkLibraryFactory)
 }
 
 func TestCcLibrarySimple(t *testing.T) {
@@ -5131,3 +5132,38 @@ cc_library {
 	}
 	runCcLibraryTestCase(t, tc)
 }
+
+func TestNdkLibraryConversion(t *testing.T) {
+	tc := Bp2buildTestCase{
+		Description:                "ndk_library conversion",
+		ModuleTypeUnderTest:        "cc_library",
+		ModuleTypeUnderTestFactory: cc.LibraryFactory,
+		Blueprint: `
+cc_library {
+	name: "libfoo",
+	bazel_module: { bp2build_available: false },
+}
+ndk_library {
+	name: "libfoo",
+	first_version: "29",
+	symbol_file: "libfoo.map.txt",
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("cc_stub_suite", "libfoo.ndk_stub_libs", AttrNameToString{
+				"api_surface":          `"publicapi"`,
+				"soname":               `"libfoo.so"`,
+				"source_library_label": `"//:libfoo"`,
+				"symbol_file":          `"libfoo.map.txt"`,
+				"versions": `[
+        "29",
+        "30",
+        "S",
+        "Tiramisu",
+        "current",
+    ]`,
+			}),
+		},
+	}
+	runCcLibraryTestCase(t, tc)
+}

cc/cc.go

@@ -4255,6 +4255,8 @@ func (c *Module) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
 		}
 	case ndkPrebuiltStl:
 		ndkPrebuiltStlBp2build(ctx, c)
+	case ndkLibrary:
+		ndkLibraryBp2build(ctx, c)
 	default:
 		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
 	}

cc/ndk_library.go

@@ -581,3 +581,40 @@ func apiHeaderLabels(ctx android.TopDownMutatorContext, hdrLibs []string) bazel.
 	}
 	return android.BazelLabelForModuleDepsWithFn(ctx, hdrLibs, addSuffix)
 }
+
+func ndkLibraryBp2build(ctx android.TopDownMutatorContext, c *Module) {
+	ndk, _ := c.linker.(*stubDecorator)
+	props := bazel.BazelTargetModuleProperties{
+		Rule_class:        "cc_stub_suite",
+		Bzl_load_location: "//build/bazel/rules/cc:cc_stub_library.bzl",
+	}
+	sourceLibraryName := strings.TrimSuffix(c.Name(), ".ndk")
+	fromApiLevel, err := android.ApiLevelFromUser(ctx, proptools.String(ndk.properties.First_version))
+	if err != nil {
+		ctx.PropertyErrorf("first_version", "error converting first_version %v", proptools.String(ndk.properties.First_version))
+	}
+	symbolFileLabel := android.BazelLabelForModuleSrcSingle(ctx, proptools.String(ndk.properties.Symbol_file))
+	attrs := &bazelCcStubSuiteAttributes{
+		// TODO - b/300504837 Add ndk headers
+		Symbol_file: proptools.StringPtr(symbolFileLabel.Label),
+		Soname:      proptools.StringPtr(sourceLibraryName + ".so"),
+		Api_surface: proptools.StringPtr(android.PublicApi.String()),
+	}
+	if sourceLibrary, exists := ctx.ModuleFromName(sourceLibraryName); exists {
+		// the source library might not exist in minimal/unbuildable branches like kernel-build-tools.
+		// check for its existence
+		attrs.Source_library_label = proptools.StringPtr(c.GetBazelLabel(ctx, sourceLibrary))
+	}
+	if ctx.Config().RawPlatformSdkVersion() != nil {
+		// This is a hack to populate `versions` only on branches that set a platform_sdk_version
+		// This prevents errors on branches such as kernel-build-tools
+		// This hack is acceptable since we are not required to support NDK Bazel builds on those branches
+		attrs.Versions = bazel.MakeStringListAttribute(ndkLibraryVersions(ctx, fromApiLevel))
+	}
+
+	ctx.CreateBazelTargetModule(
+		props,
+		android.CommonAttributes{Name: c.Name() + "_stub_libs"},
+		attrs,
+	)
+}