BE: Fix HTTP 500 on protobuf Any type

api/src/main/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerde.java

@@ -15,6 +15,7 @@
 import com.google.protobuf.StructProto;
 import com.google.protobuf.TimestampProto;
 import com.google.protobuf.TypeProto;
+import com.google.protobuf.TypeRegistry;
 import com.google.protobuf.WrappersProto;
 import com.google.protobuf.util.JsonFormat;
 import com.google.type.ColorProto;
@@ -147,12 +148,18 @@ public boolean canSerialize(String topic, Serde.Target type) {
   @Override
   public Serde.Serializer serializer(String topic, Serde.Target type) {
     var descriptor = descriptorFor(topic, type).orElseThrow();
+    TypeRegistry typeRegistry = TypeRegistry.newBuilder()
+        .add(descriptorPaths.keySet())
+        .build();
+
     return new Serde.Serializer() {
       @SneakyThrows
       @Override
       public byte[] serialize(String input) {
         DynamicMessage.Builder builder = DynamicMessage.newBuilder(descriptor);
-        JsonFormat.parser().merge(input, builder);
+        JsonFormat.parser()
+            .usingTypeRegistry(typeRegistry)
+            .merge(input, builder);
         return builder.build().toByteArray();
       }
     };

api/src/test/java/io/kafbat/ui/AbstractIntegrationTest.java

@@ -5,6 +5,7 @@
 import io.kafbat.ui.container.KafkaConnectContainer;
 import io.kafbat.ui.container.KsqlDbContainer;
 import io.kafbat.ui.container.SchemaRegistryContainer;
+import java.io.FileNotFoundException;
 import java.nio.file.Path;
 import java.util.List;
 import java.util.Properties;
@@ -22,6 +23,7 @@
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.util.TestSocketUtils;
+import org.springframework.util.ResourceUtils;
 import org.testcontainers.containers.KafkaContainer;
 import org.testcontainers.containers.Network;
 import org.testcontainers.utility.DockerImageName;
@@ -75,6 +77,18 @@ public static class Initializer
     public void initialize(@NotNull ConfigurableApplicationContext context) {
       System.setProperty("kafka.clusters.0.name", LOCAL);
       System.setProperty("kafka.clusters.0.bootstrapServers", kafka.getBootstrapServers());
+
+      // Add ProtobufFileSerde configuration
+      System.setProperty("kafka.clusters.0.serde.0.name", "ProtobufFile");
+      System.setProperty("kafka.clusters.0.serde.0.topicValuesPattern", "masking-test-.*");
+      try {
+        System.setProperty("kafka.clusters.0.serde.0.properties.protobufFilesDir",
+            ResourceUtils.getFile("classpath:protobuf-serde").getAbsolutePath());
+      } catch (FileNotFoundException e) {
+        throw new RuntimeException(e);
+      }
+      System.setProperty("kafka.clusters.0.serde.0.properties.protobufMessageName", "test.MessageWithAny");
+
       // List unavailable hosts to verify failover
       System.setProperty("kafka.clusters.0.schemaRegistry",
           String.format("http://localhost:%1$s,http://localhost:%1$s,%2$s",

api/src/test/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerdeTest.java

@@ -80,14 +80,15 @@ void setUp() throws Exception {
   void loadsAllProtoFiledFromTargetDirectory() throws Exception {
     var protoDir = ResourceUtils.getFile("classpath:protobuf-serde/").getPath();
     List<ProtoFile> files = new ProtobufFileSerde.ProtoSchemaLoader(protoDir).load();
-    assertThat(files).hasSize(4);
+    assertThat(files).hasSize(5);
     assertThat(files)
         .map(f -> f.getLocation().getPath())
         .containsExactlyInAnyOrder(
             "language/language.proto",
             "sensor.proto",
             "address-book.proto",
-            "lang-description.proto"
+            "lang-description.proto",
+            "messagewithany.proto"
         );
   }
 

api/src/test/java/io/kafbat/ui/service/MessagesServiceTest.java

@@ -13,6 +13,7 @@
 import io.kafbat.ui.model.TopicMessageDTO;
 import io.kafbat.ui.model.TopicMessageEventDTO;
 import io.kafbat.ui.producer.KafkaTestProducer;
+import io.kafbat.ui.serdes.builtin.ProtobufFileSerde;
 import io.kafbat.ui.serdes.builtin.StringSerde;
 import java.util.HashSet;
 import java.util.List;
@@ -214,4 +215,33 @@ void execSmartFilterTestReturnsErrorOnFilterCompilationError() {
     assertThat(result.getError()).containsIgnoringCase("Compilation error");
   }
 
+  @Test
+  void sendMessageWithProtobufAnyType() {
+    String jsonContent = """
+        {
+          "name": "testName",
+          "payload": {
+            "@type": "type.googleapis.com/test.PayloadMessage",
+            "id": "123"
+          }
+        }
+        """;
+
+    CreateTopicMessageDTO testMessage = new CreateTopicMessageDTO()
+        .key(null)
+        .partition(0)
+        .keySerde(StringSerde.name())
+        .content(jsonContent)
+        .valueSerde(ProtobufFileSerde.name());
+
+    String testTopic = MASKED_TOPICS_PREFIX + UUID.randomUUID();
+    createTopicWithCleanup(new NewTopic(testTopic, 5, (short) 1));
+
+    StepVerifier.create(messagesService.sendMessage(cluster, testTopic, testMessage))
+        .expectNextMatches(metadata -> metadata.topic().equals(testTopic)
+            && metadata.partition() == 0
+            && metadata.offset() >= 0)
+        .verifyComplete();
+  }
+
 }

api/src/test/resources/protobuf-serde/messagewithany.proto

@@ -0,0 +1,13 @@
+syntax = "proto3";
+package test;
+
+import "google/protobuf/any.proto";
+
+message MessageWithAny  {
+    string name = 1;
+    google.protobuf.Any payload = 2;
+}
+
+message PayloadMessage  {
+    string id = 1;
+}