code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.kafka;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import com.google.common.collect.ImmutableMap;
  import io.airbyte.commons.jackson.MoreMappers;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.integrations.base.AirbyteStreamNameNamespacePair;
  import io.airbyte.integrations.base.FailureTrackingAirbyteMessageConsumer;
  import io.airbyte.integrations.destination.StandardNameTransformer;
  import io.airbyte.integrations.standardtest.destination.PerStreamStateMessageTest;
  import io.airbyte.protocol.models.AirbyteMessage;
  import io.airbyte.protocol.models.AirbyteRecordMessage;
  import io.airbyte.protocol.models.AirbyteStateMessage;
  import io.airbyte.protocol.models.CatalogHelpers;
  import io.airbyte.protocol.models.ConfiguredAirbyteCatalog;
  import io.airbyte.protocol.models.Field;
  import io.airbyte.protocol.models.JsonSchemaType;
  import java.time.Instant;
  import java.util.List;
  import java.util.Map;
  import java.util.function.Consumer;
  import java.util.stream.Collectors;
  import java.util.stream.IntStream;
  import java.util.stream.Stream;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.DisplayName;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.junit.jupiter.api.extension.ExtensionContext;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.Arguments;
  import org.junit.jupiter.params.provider.ArgumentsProvider;
  import org.junit.jupiter.params.provider.ArgumentsSource;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  @DisplayName("KafkaRecordConsumer")
  @ExtendWith(MockitoExtension.class)
  public class KafkaRecordConsumerTest extends PerStreamStateMessageTest {
  
    private static final ObjectMapper mapper = MoreMappers.initMapper();
    private static final String TOPIC_NAME = "test.topic";
    private static final String SCHEMA_NAME = "public";
    private static final String STREAM_NAME = "id_and_name";
  
    private static final ConfiguredAirbyteCatalog CATALOG = new ConfiguredAirbyteCatalog().withStreams(List.of(
        CatalogHelpers.createConfiguredAirbyteStream(
            STREAM_NAME,
            SCHEMA_NAME,
            Field.of("id", JsonSchemaType.NUMBER),
            Field.of("name", JsonSchemaType.STRING))));
  
    @Mock
    private Consumer<AirbyteMessage> outputRecordCollector;
  
    private KafkaRecordConsumer consumer;
  
    private static final StandardNameTransformer NAMING_RESOLVER = new StandardNameTransformer();
  
    @BeforeEach
    public void init() {
      final KafkaDestinationConfig config = KafkaDestinationConfig.getKafkaDestinationConfig(getConfig(TOPIC_NAME));
      consumer = new KafkaRecordConsumer(config, CATALOG, outputRecordCollector, NAMING_RESOLVER);
    }
  
    @ParameterizedTest
    @ArgumentsSource(TopicMapArgumentsProvider.class)
    @SuppressWarnings("unchecked")
    public void testBuildTopicMap(final String topicPattern, final String expectedTopic) {
      final KafkaDestinationConfig config = KafkaDestinationConfig.getKafkaDestinationConfig(getConfig(topicPattern));
      consumer = new KafkaRecordConsumer(config, CATALOG, outputRecordCollector, NAMING_RESOLVER);
  
      final Map<AirbyteStreamNameNamespacePair, String> topicMap = consumer.buildTopicMap();
      assertEquals(1, topicMap.size());
  
      final AirbyteStreamNameNamespacePair streamNameNamespacePair = new AirbyteStreamNameNamespacePair(STREAM_NAME, SCHEMA_NAME);
      assertEquals(expectedTopic, topicMap.get(streamNameNamespacePair));
    }
  
    @Test
    @SuppressWarnings("unchecked")
    void testCannotConnectToBrokers() throws Exception {
      final List<AirbyteMessage> expectedRecords = getNRecords(10);
  
      consumer.start();
  
      expectedRecords.forEach(m -> assertThrows(RuntimeException.class, () -> consumer.accept(m)));
  
      consumer.accept(new AirbyteMessage()
          .withType(AirbyteMessage.Type.STATE)
          .withState(new AirbyteStateMessage().withData(Jsons.jsonNode(ImmutableMap.of(SCHEMA_NAME + "." + STREAM_NAME, 0)))));
      consumer.close();
    }
  
    private JsonNode getConfig(final String topicPattern) {
      final ObjectNode stubProtocolConfig = mapper.createObjectNode();
      stubProtocolConfig.put("security_protocol", KafkaProtocol.PLAINTEXT.toString());
  
      return Jsons.jsonNode(ImmutableMap.builder()
          .put("bootstrap_servers", "localhost:9092")
          .put("topic_pattern", topicPattern)
          .put("sync_producer", true)
          .put("protocol", stubProtocolConfig)
          .put("sasl_jaas_config", "")
          .put("sasl_mechanism", "PLAIN")
          .put("client_id", "test-client")
          .put("acks", "all")
          .put("transactional_id", "txn-id")
          .put("enable_idempotence", true)
          .put("compression_type", "none")
          .put("batch_size", "16384")
          .put("linger_ms", "0")
          .put("max_in_flight_requests_per_connection", "5")
          .put("client_dns_lookup", "use_all_dns_ips")
          .put("buffer_memory", 33554432)
          .put("max_request_size", 1048576)
          .put("retries", 1)
          .put("socket_connection_setup_timeout_ms", "10")
          .put("socket_connection_setup_timeout_max_ms", "30")
          .put("max_block_ms", "100")
          .put("request_timeout_ms", 100)
          .put("delivery_timeout_ms", 120)
          .put("send_buffer_bytes", -1)
          .put("receive_buffer_bytes", -1)
          .build());
    }
  
    private List<AirbyteMessage> getNRecords(final int n) {
      return IntStream.range(0, n)
          .boxed()
          .map(i -> new AirbyteMessage()
              .withType(AirbyteMessage.Type.RECORD)
              .withRecord(new AirbyteRecordMessage()
                  .withStream(STREAM_NAME)
                  .withNamespace(SCHEMA_NAME)
                  .withEmittedAt(Instant.now().toEpochMilli())
                  .withData(Jsons.jsonNode(ImmutableMap.of("id", i, "name", "human " + i)))))
          .collect(Collectors.toList());
  
    }
  
    @Override
    protected Consumer<AirbyteMessage> getMockedConsumer() {
      return outputRecordCollector;
    }
  
    @Override
    protected FailureTrackingAirbyteMessageConsumer getMessageConsumer() {
      return consumer;
    }
  
    public static class TopicMapArgumentsProvider implements ArgumentsProvider {
  
      @Override
      public Stream<? extends Arguments> provideArguments(final ExtensionContext context) {
        return Stream.of(
            Arguments.of(TOPIC_NAME, "test_topic"),
            Arguments.of("test-topic", "test_topic"),
            Arguments.of("{namespace}", SCHEMA_NAME),
            Arguments.of("{stream}", STREAM_NAME),
            Arguments.of("{namespace}.{stream}." + TOPIC_NAME, "public_id_and_name_test_topic"),
            Arguments.of("{namespace}-{stream}-" + TOPIC_NAME, "public_id_and_name_test_topic"),
            Arguments.of("topic with spaces", "topic_with_spaces"));
      }
  
    }
  
  }
  