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Reserialize all unresolved features using java features from the gene…
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…rated pool in case of descriptors from the custom pool.

This extends previous workaround for java features in unknown fields, to include features extensions that are known but use a mismatched descriptor.

This can happen when users bring their own descriptors via buildFrom.

PiperOrigin-RevId: 644013578
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@zhangskz
zhangskz committed Jun 17, 2024
1 parent e5ddc45 commit 2426a02
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Showing 2 changed files with 121 additions and 68 deletions.
37 changes: 25 additions & 12 deletions java/core/src/main/java/com/google/protobuf/Descriptors.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2785,10 +2785,30 @@ private GenericDescriptor() {}
public abstract FileDescriptor getFile();

void resolveFeatures(FeatureSet unresolvedFeatures) throws DescriptorValidationException {
// Unknown java features may be passed by users via public buildFrom but should not occur from
// generated code.
if (!unresolvedFeatures.getUnknownFields().isEmpty()
&& unresolvedFeatures.getUnknownFields().hasField(JavaFeaturesProto.java_.getNumber())) {
if (this.parent != null
&& unresolvedFeatures.equals(FeatureSet.getDefaultInstance())
&& !hasInferredLegacyProtoFeatures()) {
this.features = this.parent.features;
validateFeatures();
return;
}

// Java features from a custom pool (i.e. buildFrom) may end up in unknown fields or
// use a different descriptor from the generated pool used by the Java runtime.
boolean hasPossibleCustomJavaFeature = false;
for (FieldDescriptor f : unresolvedFeatures.getExtensionFields().keySet()) {
if (f.getNumber() == JavaFeaturesProto.java_.getNumber()
&& f != JavaFeaturesProto.java_.getDescriptor()) {
hasPossibleCustomJavaFeature = true;
continue;
}
}
boolean hasPossibleUnknownJavaFeature =
!unresolvedFeatures.getUnknownFields().isEmpty()
&& unresolvedFeatures
.getUnknownFields()
.hasField(JavaFeaturesProto.java_.getNumber());
if (hasPossibleCustomJavaFeature || hasPossibleUnknownJavaFeature) {
ExtensionRegistry registry = ExtensionRegistry.newInstance();
registry.add(JavaFeaturesProto.java_);
ByteString bytes = unresolvedFeatures.toByteString();
Expand All @@ -2799,14 +2819,7 @@ void resolveFeatures(FeatureSet unresolvedFeatures) throws DescriptorValidationE
this, "Failed to parse features with Java feature extension registry.", e);
}
}

if (this.parent != null
&& unresolvedFeatures.equals(FeatureSet.getDefaultInstance())
&& !hasInferredLegacyProtoFeatures()) {
this.features = this.parent.features;
validateFeatures();
return;
}

FeatureSet.Builder features;
if (this.parent == null) {
Edition edition = getFile().getEdition();
Expand Down
152 changes: 96 additions & 56 deletions java/core/src/test/java/com/google/protobuf/DescriptorsTest.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -352,8 +352,9 @@ public void testFieldDescriptorDefault() throws Exception {
}

@Test
public void testProto2FieldDescriptorLegacyEnumFieldTreatedAsClosed() throws Exception {
// Make an open enum definition.
public void testFieldDescriptorLegacyEnumFieldTreatedAsOpen() throws Exception {
// Make an open enum definition and message that treats enum fields as open.

FileDescriptorProto openEnumFile =
FileDescriptorProto.newBuilder()
.setName("open_enum.proto")
Expand All @@ -367,30 +368,9 @@ public void testProto2FieldDescriptorLegacyEnumFieldTreatedAsClosed() throws Exc
.setNumber(0)
.build())
.build())
.build();
FileDescriptor openFileDescriptor =
Descriptors.FileDescriptor.buildFrom(openEnumFile, new FileDescriptor[0]);
EnumDescriptor openEnum = openFileDescriptor.getEnumTypes().get(0);
assertThat(openEnum.isClosed()).isFalse();

// Create a message that treats enum fields as closed.
FileDescriptorProto closedEnumFile =
FileDescriptorProto.newBuilder()
.setName("closed_enum_field.proto")
.addDependency("open_enum.proto")
.setSyntax("proto2")
.addEnumType(
EnumDescriptorProto.newBuilder()
.setName("TestEnum")
.addValue(
EnumValueDescriptorProto.newBuilder()
.setName("TestEnum_VALUE0")
.setNumber(0)
.build())
.build())
.addMessageType(
DescriptorProto.newBuilder()
.setName("TestClosedEnumField")
.setName("TestOpenEnumField")
.addField(
FieldDescriptorProto.newBuilder()
.setName("int_field")
Expand All @@ -406,32 +386,21 @@ public void testProto2FieldDescriptorLegacyEnumFieldTreatedAsClosed() throws Exc
.setTypeName("TestEnumOpen")
.setLabel(FieldDescriptorProto.Label.LABEL_OPTIONAL)
.build())
.addField(
FieldDescriptorProto.newBuilder()
.setName("closed_enum")
.setNumber(3)
.setType(FieldDescriptorProto.Type.TYPE_ENUM)
.setTypeName("TestEnum")
.setLabel(FieldDescriptorProto.Label.LABEL_OPTIONAL)
.build())
.build())
.build();
Descriptor closedMessage =
Descriptors.FileDescriptor.buildFrom(
closedEnumFile, new FileDescriptor[] {openFileDescriptor})
.getMessageTypes()
.get(0);
assertThat(closedMessage.findFieldByName("int_field").legacyEnumFieldTreatedAsClosed())
FileDescriptor openEnumFileDescriptor =
Descriptors.FileDescriptor.buildFrom(openEnumFile, new FileDescriptor[0]);
Descriptor openMessage = openEnumFileDescriptor.getMessageTypes().get(0);
EnumDescriptor openEnum = openEnumFileDescriptor.findEnumTypeByName("TestEnumOpen");
assertThat(openEnum.isClosed()).isFalse();
assertThat(openMessage.findFieldByName("int_field").legacyEnumFieldTreatedAsClosed())
.isFalse();
assertThat(openMessage.findFieldByName("open_enum").legacyEnumFieldTreatedAsClosed())
.isFalse();

assertThat(closedMessage.findFieldByName("closed_enum").legacyEnumFieldTreatedAsClosed())
.isTrue();
assertThat(closedMessage.findFieldByName("open_enum").legacyEnumFieldTreatedAsClosed())
.isTrue();
}

@Test
public void testEditionFieldDescriptorLegacyEnumFieldTreatedAsClosed() throws Exception {
public void testEditionFieldDescriptorLegacyEnumFieldTreatedAsClosedUnknown() throws Exception {
// Make an open enum definition.
FileDescriptorProto openEnumFile =
FileDescriptorProto.newBuilder()
Expand Down Expand Up @@ -536,12 +505,19 @@ public void testEditionFieldDescriptorLegacyEnumFieldTreatedAsClosed() throws Ex
}

@Test
public void testFieldDescriptorLegacyEnumFieldTreatedAsOpen() throws Exception {
// Make an open enum definition and message that treats enum fields as open.
public void testEditionFieldDescriptorLegacyEnumFieldTreatedAsClosedCustomPool()
throws Exception {

FileDescriptor javaFeaturesDescriptor =
Descriptors.FileDescriptor.buildFrom(
JavaFeaturesProto.getDescriptor().toProto(),
new FileDescriptor[] {DescriptorProtos.getDescriptor()});
// Make an open enum definition.
FileDescriptorProto openEnumFile =
FileDescriptorProto.newBuilder()
.setName("open_enum.proto")
.setSyntax("proto3")
.setSyntax("editions")
.setEdition(Edition.EDITION_2023)
.addEnumType(
EnumDescriptorProto.newBuilder()
.setName("TestEnumOpen")
Expand All @@ -551,9 +527,38 @@ public void testFieldDescriptorLegacyEnumFieldTreatedAsOpen() throws Exception {
.setNumber(0)
.build())
.build())
.build();
FileDescriptor openFileDescriptor =
Descriptors.FileDescriptor.buildFrom(openEnumFile, new FileDescriptor[0]);
EnumDescriptor openEnum = openFileDescriptor.getEnumTypes().get(0);
assertThat(openEnum.isClosed()).isFalse();

// Create a message that treats enum fields as closed.
FileDescriptorProto editionsClosedEnumFile =
FileDescriptorProto.newBuilder()
.setName("editions_closed_enum_field.proto")
.addDependency("open_enum.proto")
.setSyntax("editions")
.setEdition(Edition.EDITION_2023)
.setOptions(
FileOptions.newBuilder()
.setFeatures(
DescriptorProtos.FeatureSet.newBuilder()
.setEnumType(DescriptorProtos.FeatureSet.EnumType.CLOSED)
.build())
.build())
.addEnumType(
EnumDescriptorProto.newBuilder()
.setName("TestEnum")
.addValue(
EnumValueDescriptorProto.newBuilder()
.setName("TestEnum_VALUE0")
.setNumber(0)
.build())
.build())
.addMessageType(
DescriptorProto.newBuilder()
.setName("TestOpenEnumField")
.setName("TestClosedEnumField")
.addField(
FieldDescriptorProto.newBuilder()
.setName("int_field")
Expand All @@ -568,18 +573,53 @@ public void testFieldDescriptorLegacyEnumFieldTreatedAsOpen() throws Exception {
.setType(FieldDescriptorProto.Type.TYPE_ENUM)
.setTypeName("TestEnumOpen")
.setLabel(FieldDescriptorProto.Label.LABEL_OPTIONAL)
.setOptions(
DescriptorProtos.FieldOptions.newBuilder()
.setFeatures(
DescriptorProtos.FeatureSet.newBuilder()
.setExtension(
// Extension cannot be directly set using custom
// descriptor, so set using generated for now.
JavaFeaturesProto.java_,
JavaFeaturesProto.JavaFeatures.newBuilder()
.setLegacyClosedEnum(true)
.build())
.build())
.build())
.build())
.addField(
FieldDescriptorProto.newBuilder()
.setName("closed_enum")
.setNumber(3)
.setType(FieldDescriptorProto.Type.TYPE_ENUM)
.setTypeName("TestEnum")
.setLabel(FieldDescriptorProto.Label.LABEL_OPTIONAL)
.build())
.build())
.build();
FileDescriptor openEnumFileDescriptor =
Descriptors.FileDescriptor.buildFrom(openEnumFile, new FileDescriptor[0]);
Descriptor openMessage = openEnumFileDescriptor.getMessageTypes().get(0);
EnumDescriptor openEnum = openEnumFileDescriptor.findEnumTypeByName("TestEnumOpen");
assertThat(openEnum.isClosed()).isFalse();
assertThat(openMessage.findFieldByName("int_field").legacyEnumFieldTreatedAsClosed())
.isFalse();
assertThat(openMessage.findFieldByName("open_enum").legacyEnumFieldTreatedAsClosed())
// Reparse using custom java features descriptor.
ExtensionRegistry registry = ExtensionRegistry.newInstance();
registry.add(
javaFeaturesDescriptor.getExtensions().get(0),
DynamicMessage.getDefaultInstance(
javaFeaturesDescriptor.getExtensions().get(0).getMessageType()));
editionsClosedEnumFile =
FileDescriptorProto.parseFrom(editionsClosedEnumFile.toByteString(), registry);
Descriptor editionsClosedMessage =
Descriptors.FileDescriptor.buildFrom(
editionsClosedEnumFile,
new FileDescriptor[] {openFileDescriptor, javaFeaturesDescriptor})
.getMessageTypes()
.get(0);
assertThat(
editionsClosedMessage.findFieldByName("int_field").legacyEnumFieldTreatedAsClosed())
.isFalse();
assertThat(
editionsClosedMessage.findFieldByName("closed_enum").legacyEnumFieldTreatedAsClosed())
.isTrue();
assertThat(
editionsClosedMessage.findFieldByName("open_enum").legacyEnumFieldTreatedAsClosed())
.isTrue();
}

@Test
Expand Down

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