Spring 동적 추가 Bean

public class DataSourcesBeanFactoryPostProcessor implements BeanDefinitionRegistryPostProcessor {

  private final List customerKeys;

  public DataSourcesBeanFactoryPostProcessor(Environment springEnvironment) {
    parseCustomerKeys(springEnvironment.getProperty("customerKeys"));
  }

  @Override
  public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
    for (String customerKey : customerKeys) {
      String dataSourceName = "dataSource_" + customerKey;
      BeanDefinitionBuilder definitionBuilder =
          BeanDefinitionBuilder.genericBeanDefinition(JndiObjectFactoryBean.class);
      definitionBuilder.addPropertyValue("jndiName", "jdbc/" + dataSourceName);
      registry.registerBeanDefinition(dataSourceName, definitionBuilder.getBeanDefinition());
    }
  }

  @Override
  public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
    // we actually only add new beans, but do not post process the existing definitions
  }

  private static List parseCustomerKeys(String rawCustomerKeys) {
    if (StringUtils.isEmpty(rawCustomerKeys)){
      throw new IllegalArgumentException("Property 'customerKeys' is undefined.");
    }
    return Collections.unmodifiableList(Arrays.asList(StringUtils.split(rawCustomerKeys, ",")));
  }
}

context.getBeanFactory().registerSingleton(beanName, singletonObject)