Add support for java_library proto plugin in bp2build

Test: Added unit test and CI

Bug: 303064670
Change-Id: Idb96ac322aafcb6789ea2002b84a6905d5ec488f

android/allowlists/allowlists.go

@@ -994,6 +994,7 @@ var (
 		"tradefed-result-interfaces",
 		"tradefed-device-build-interfaces",
 		"tradefed-invocation-interfaces",
+		"tradefed-lib-core",
 	}
 
 	Bp2buildModuleTypeAlwaysConvertList = []string{

bp2build/java_proto_conversion_test.go

@@ -193,3 +193,46 @@ java_library_static {
 		},
 	})
 }
+
+func TestJavaProtoPlugin(t *testing.T) {
+	runJavaProtoTestCase(t, Bp2buildTestCase{
+		Description:             "java_library proto plugin",
+		StubbedBuildDefinitions: []string{"protoc-gen-test-plugin"},
+		Blueprint: `java_library_static {
+    name: "java-protos",
+    srcs: ["a.proto"],
+    proto: {
+        plugin: "test-plugin",
+    },
+    sdk_version: "current",
+}
+
+java_library_static {
+    name: "protoc-gen-test-plugin",
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("proto_library", "java-protos_proto", AttrNameToString{
+				"srcs": `["a.proto"]`,
+			}),
+			MakeBazelTarget(
+				"java_lite_proto_library",
+				"java-protos_java_proto_lite",
+				AttrNameToString{
+					"deps":        `[":java-protos_proto"]`,
+					"plugin":      `":protoc-gen-test-plugin"`,
+					"sdk_version": `"current"`,
+				}),
+			MakeBazelTarget("java_library", "java-protos", AttrNameToString{
+				"exports":     `[":java-protos_java_proto_lite"]`,
+				"sdk_version": `"current"`,
+			}),
+			MakeNeverlinkDuplicateTargetWithAttrs(
+				"java_library",
+				"java-protos",
+				AttrNameToString{
+					"sdk_version": `"current"`,
+				}),
+		},
+	})
+}

java/proto.go

@@ -159,6 +159,8 @@ type protoAttributes struct {
 
 	Sdk_version  bazel.StringAttribute
 	Java_version bazel.StringAttribute
+
+	Plugin bazel.LabelAttribute
 }
 
 func bp2buildProto(ctx android.Bp2buildMutatorContext, m *Module, protoSrcs bazel.LabelListAttribute, AdditionalProtoDeps bazel.LabelListAttribute) *bazel.Label {
@@ -189,12 +191,18 @@ func bp2buildProto(ctx android.Bp2buildMutatorContext, m *Module, protoSrcs baze
 		ctx.PropertyErrorf("proto.type", "cannot handle conversion at this time: %q", typ)
 	}
 
+	plugin := bazel.LabelAttribute{}
+	if m.protoProperties.Proto.Plugin != nil {
+		plugin.SetValue(android.BazelLabelForModuleDepSingle(ctx, "protoc-gen-"+*m.protoProperties.Proto.Plugin))
+	}
+
 	protoAttrs := &protoAttributes{
 		Deps:                  bazel.MakeLabelListAttribute(protoInfo.Proto_libs),
 		Transitive_deps:       bazel.MakeLabelListAttribute(protoInfo.Transitive_proto_libs),
 		Additional_proto_deps: AdditionalProtoDeps,
 		Java_version:          bazel.StringAttribute{Value: m.properties.Java_version},
 		Sdk_version:           bazel.StringAttribute{Value: m.deviceProperties.Sdk_version},
+		Plugin:                plugin,
 	}
 
 	name := m.Name() + suffix