code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.gcs;
  
  import com.amazonaws.services.s3.AmazonS3;
  import com.fasterxml.jackson.databind.JsonNode;
  import io.airbyte.integrations.BaseConnector;
  import io.airbyte.integrations.base.AirbyteMessageConsumer;
  import io.airbyte.integrations.base.Destination;
  import io.airbyte.integrations.base.IntegrationRunner;
  import io.airbyte.integrations.destination.NamingConventionTransformer;
  import io.airbyte.integrations.destination.record_buffer.FileBuffer;
  import io.airbyte.integrations.destination.s3.S3ConsumerFactory;
  import io.airbyte.integrations.destination.s3.S3Destination;
  import io.airbyte.integrations.destination.s3.SerializedBufferFactory;
  import io.airbyte.protocol.models.AirbyteConnectionStatus;
  import io.airbyte.protocol.models.AirbyteConnectionStatus.Status;
  import io.airbyte.protocol.models.AirbyteMessage;
  import io.airbyte.protocol.models.ConfiguredAirbyteCatalog;
  import java.util.function.Consumer;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class GcsDestination extends BaseConnector implements Destination {
  
    private static final Logger LOGGER = LoggerFactory.getLogger(GcsDestination.class);
    public static final String EXPECTED_ROLES = "storage.multipartUploads.abort, storage.multipartUploads.create, "
        + "storage.objects.create, storage.objects.delete, storage.objects.get, storage.objects.list";
  
    private final NamingConventionTransformer nameTransformer;
  
    public GcsDestination() {
      this.nameTransformer = new GcsNameTransformer();
    }
  
    public static void main(final String[] args) throws Exception {
      new IntegrationRunner(new GcsDestination()).run(args);
    }
  
    @Override
    public AirbyteConnectionStatus check(final JsonNode config) {
      try {
        final GcsDestinationConfig destinationConfig = GcsDestinationConfig.getGcsDestinationConfig(config);
        final AmazonS3 s3Client = destinationConfig.getS3Client();
  
        // Test single upload (for small files) permissions
        S3Destination.testSingleUpload(s3Client, destinationConfig.getBucketName(), destinationConfig.getBucketPath());
  
        // Test multipart upload with stream transfer manager
        S3Destination.testMultipartUpload(s3Client, destinationConfig.getBucketName(), destinationConfig.getBucketPath());
  
        return new AirbyteConnectionStatus().withStatus(Status.SUCCEEDED);
      } catch (final Exception e) {
        LOGGER.error("Exception attempting to access the Gcs bucket: {}", e.getMessage());
        LOGGER.error("Please make sure you account has all of these roles: " + EXPECTED_ROLES);
  
        return new AirbyteConnectionStatus()
            .withStatus(AirbyteConnectionStatus.Status.FAILED)
            .withMessage("Could not connect to the Gcs bucket with the provided configuration. \n" + e
                .getMessage());
      }
    }
  
    @Override
    public AirbyteMessageConsumer getConsumer(final JsonNode config,
                                              final ConfiguredAirbyteCatalog configuredCatalog,
                                              final Consumer<AirbyteMessage> outputRecordCollector) {
      final GcsDestinationConfig gcsConfig = GcsDestinationConfig.getGcsDestinationConfig(config);
      return new S3ConsumerFactory().create(
          outputRecordCollector,
          new GcsStorageOperations(nameTransformer, gcsConfig.getS3Client(), gcsConfig),
          nameTransformer,
          SerializedBufferFactory.getCreateFunction(gcsConfig, FileBuffer::new),
          gcsConfig,
          configuredCatalog);
    }
  
  }
  