public DataSource getPooledDataSource(Map configMap, List<ConfigProperty> props)
      throws DataSourceCreateException {
    ConfiguredDataSourceProperties configs = createDataSourceProperties(configMap);
    String connpoolClassName = configs.getConnectionPoolDSClass();
    if (connpoolClassName == null) {
      connpoolClassName = DEFAULT_CONNECTION_POOL_DS_CLASS;
    }
    try {
      Properties poolProperties = createPoolProperties(configMap, props);
      Properties dataSourceProperties = createDataSourceProperties(props);
      Class<?> cl = ClassPathLoader.getLatest().forName(connpoolClassName);
      PooledDataSourceFactory factory = (PooledDataSourceFactory) cl.newInstance();
      return factory.createDataSource(poolProperties, dataSourceProperties);
    } catch (Exception ex) {
      String exception =
          String.format(
              "DataSourceFactory::getPooledDataSource:Exception creating ConnectionPoolDataSource.Exception string=%s",
              ex);
      logger.error(String.format(
          "DataSourceFactory::getPooledDataSource:Exception creating ConnectionPoolDataSource.Exception string=%s",
          ex),
          ex);
      throw new DataSourceCreateException(exception, ex);
    }
  }
This function returns the datasource with connection pooling.
geode-core/src/main/java/org/apache/geode/internal/datasource/DataSourceFactory.java