Limit Spring Beans in Expressions in Spring Boot

Camunda 7 Topics Discussion & Questions
1

Hi,

I’m trying to limit the Spring beans available in expressions. Ive looked at the following

and have managed to get it working in the following way

@Configuration
@AllArgsConstructor
public class SpringBeanConfig {

  private final List<WorkflowService> services;
  private final List<WorkflowDelegate> delegates;

  @Bean
  public SpringProcessEngineConfiguration springProcessEngineConfiguration(List<ProcessEnginePlugin> processEnginePlugins) {
    SpringProcessEngineConfiguration config = new SpringProcessEngineConfiguration();
    CamundaSpringBootUtil.initCustomFields(config);
    config.getProcessEnginePlugins().add(new CompositeProcessEnginePlugin(processEnginePlugins));

    Map<Object, Object> beans = new HashMap<>();
    // add all services that are allowed to be accessed
    beans.putAll(services.stream()
        .collect(Collectors.toMap(service -> ClassUtils.getShortNameAsProperty(service.getClass()), s -> s)));
    // add all delegates that are allowed to be accessed
    beans.putAll(delegates.stream()
        .collect(Collectors.toMap(service -> ClassUtils.getShortNameAsProperty(service.getClass()), s -> s)));
    config.setBeans(beans);
    return config;
  }

}

My question is, is there a better way of doing this? As I’ve tried getting the existing SpringProcessEngineConfiguration and setting the beans on it but the ProcessEngineFactoryBean#initializeExpressionManager has already been called by then.

Thanks,

Matt

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