code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.clickhouse;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.google.common.collect.ImmutableList;
  import com.google.common.collect.ImmutableMap;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.db.factory.DataSourceFactory;
  import io.airbyte.db.factory.DatabaseDriver;
  import io.airbyte.db.jdbc.JdbcDatabase;
  import io.airbyte.db.jdbc.JdbcUtils;
  import io.airbyte.integrations.base.Destination;
  import io.airbyte.integrations.base.IntegrationRunner;
  import io.airbyte.integrations.base.ssh.SshWrappedDestination;
  import io.airbyte.integrations.destination.NamingConventionTransformer;
  import io.airbyte.integrations.destination.jdbc.AbstractJdbcDestination;
  import io.airbyte.protocol.models.AirbyteConnectionStatus;
  import io.airbyte.protocol.models.AirbyteConnectionStatus.Status;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import javax.sql.DataSource;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class ClickhouseDestination extends AbstractJdbcDestination implements Destination {
  
    private static final Logger LOGGER = LoggerFactory.getLogger(ClickhouseDestination.class);
  
    public static final String DRIVER_CLASS = DatabaseDriver.CLICKHOUSE.getDriverClassName();
  
    public static final List<String> HOST_KEY = List.of("host");
    public static final List<String> PORT_KEY = List.of("port");
    public static final String HTTPS_PROTOCOL = "https";
    public static final String HTTP_PROTOCOL = "http";
  
    private static final String PASSWORD = "password";
  
    static final List<String> SSL_PARAMETERS = ImmutableList.of(
        "socket_timeout=3000000",
        "sslmode=none");
    static final List<String> DEFAULT_PARAMETERS = ImmutableList.of(
        "socket_timeout=3000000");
  
    public static Destination sshWrappedDestination() {
      return new SshWrappedDestination(new ClickhouseDestination(), JdbcUtils.HOST_LIST_KEY, JdbcUtils.PORT_LIST_KEY);
    }
  
    public ClickhouseDestination() {
      super(DRIVER_CLASS, new ClickhouseSQLNameTransformer(), new ClickhouseSqlOperations());
    }
  
    @Override
    public JsonNode toJdbcConfig(final JsonNode config) {
      final boolean isSsl = JdbcUtils.useSsl(config);
      final StringBuilder jdbcUrl = new StringBuilder(
          String.format(DatabaseDriver.CLICKHOUSE.getUrlFormatString(),
              isSsl ? HTTPS_PROTOCOL : HTTP_PROTOCOL,
              config.get(JdbcUtils.HOST_KEY).asText(),
              config.get(JdbcUtils.PORT_KEY).asInt(),
              config.get(JdbcUtils.DATABASE_KEY).asText()));
  
      if (isSsl) {
        jdbcUrl.append("?").append(String.join("&", SSL_PARAMETERS));
      } else {
        jdbcUrl.append("?").append(String.join("&", DEFAULT_PARAMETERS));
      }
  
      final ImmutableMap.Builder<Object, Object> configBuilder = ImmutableMap.builder()
          .put(JdbcUtils.USERNAME_KEY, config.get(JdbcUtils.USERNAME_KEY).asText())
          .put(JdbcUtils.JDBC_URL_KEY, jdbcUrl);
  
      if (config.has(JdbcUtils.PASSWORD_KEY)) {
        configBuilder.put(JdbcUtils.PASSWORD_KEY, config.get(JdbcUtils.PASSWORD_KEY).asText());
      }
  
      return Jsons.jsonNode(configBuilder.build());
    }
  
    @Override
    public AirbyteConnectionStatus check(final JsonNode config) {
      final DataSource dataSource = getDataSource(config);
      try {
        final JdbcDatabase database = getDatabase(dataSource);
        final NamingConventionTransformer namingResolver = getNamingResolver();
        final String outputSchema = namingResolver.getIdentifier(config.get(JdbcUtils.DATABASE_KEY).asText());
        attemptSQLCreateAndDropTableOperations(outputSchema, database, namingResolver, getSqlOperations());
        return new AirbyteConnectionStatus().withStatus(Status.SUCCEEDED);
      } catch (final Exception e) {
        LOGGER.error("Exception while checking connection: ", e);
        return new AirbyteConnectionStatus()
            .withStatus(Status.FAILED)
            .withMessage("Could not connect with provided configuration. \n" + e.getMessage());
      } finally {
        try {
          DataSourceFactory.close(dataSource);
        } catch (final Exception e) {
          LOGGER.warn("Unable to close data source.", e);
        }
      }
    }
  
    @Override
    protected Map<String, String> getDefaultConnectionProperties(final JsonNode config) {
      return Collections.emptyMap();
    }
  
    public static void main(final String[] args) throws Exception {
      final Destination destination = ClickhouseDestination.sshWrappedDestination();
      LOGGER.info("starting destination: {}", ClickhouseDestination.class);
      new IntegrationRunner(destination).run(args);
      LOGGER.info("completed destination: {}", ClickhouseDestination.class);
    }
  
  }
  