如何使 AuditorAware 与 Spring Data Mongo Reactive 一起工作

问题描述

Spring Security 5 提供了一个 ReactiveSecurityContextHolder 来从 Reactive 中获取 SecurityContext上下文，但是当我想实现 AuditorAware 并自动获得试听工作时，但它不起作用.目前我找不到 AuditorAware 的 Reactive 变体.

Spring Security 5 provides a ReactiveSecurityContextHolder to fetch the SecurityContext from a Reactive context, but when I want to implement AuditorAware and get audition work automatically, but it does not work. Currently I can not find a Reactive variant for AuditorAware.

@Bean
public AuditorAware<Username> auditor() {
    return () -> ReactiveSecurityContextHolder.getContext()
        .map(SecurityContext::getAuthentication)
        .log()
        .filter(a -> a != null && a.isAuthenticated())
        .map(Authentication::getPrincipal)
        .cast(UserDetails.class)
        .map(auth -> new Username(auth.getName()))
        .switchIfEmpty(Mono.empty())
        .blockOptional();
}

我在启动 Application 类中添加了 @EnableMongoAuduting.

I have added @EnableMongoAuduting on my boot Application class.

关于 Mongo 文档类.我添加了与试听相关的注释.

On the Mongo document class. I added audition related annotations.

@CreatedDate
private LocalDateTime createdDate;

@CreatedBy
private Username author;

当我添加帖子时，createdDate 已填满，但作者为空.

When I added a post, the createdDate is filled, but author is null.

{"id":"5a49ccdb9222971f40a4ada1","title":"my first post","content":"content of my first post","createdDate":"2018-01-01T13:53:31.234","author":null}

完整代码在这里，基于Spring启动 2.0.0.M7.

The complete codes is here, based on Spring Boot 2.0.0.M7.

更新: Spring Boot 2.4.0-M2/Spring Data Common 2.4.0-M2/Spring Data Mongo 3.1.0-M2 包括一个ReactiveAuditorAware，检查这个新样本，注意:使用@EnableReactiveMongoAuditing来激活它.

Update: Spring Boot 2.4.0-M2/Spring Data Common 2.4.0-M2/Spring Data Mongo 3.1.0-M2 includes a ReactiveAuditorAware, Check this new sample, Note: use @EnableReactiveMongoAuditing to activiate it.

推荐答案

已弃用:请参阅原帖中的更新解决方案

在提供官方 reactive AuditAware 之前，有一种替代方法可以通过 Spring Data Mongo 特定的 ReactiveBeforeConvertCallback 来实现这些.

Deprecated: see the update solution in the original post

Before the official reactive AuditAware is provided, there is an alternative to implement these via Spring Data Mongo specific ReactiveBeforeConvertCallback.

1. 不要使用@EnableMongoAuditing
2. 实现你自己的ReactiveBeforeConvertCallback，这里我使用PersistentEntity接口来处理那些需要审计的实体.

1. Do not use @EnableMongoAuditing
2. Implement your own ReactiveBeforeConvertCallback, here I use a PersistentEntity interface for those entities that need to be audited.

public class PersistentEntityCallback implements ReactiveBeforeConvertCallback<PersistentEntity> {

    @Override
    public Publisher<PersistentEntity> onBeforeConvert(PersistentEntity entity, String collection) {
        var user = ReactiveSecurityContextHolder.getContext()
                .map(SecurityContext::getAuthentication)
                .filter(it -> it != null && it.isAuthenticated())
                .map(Authentication::getPrincipal)
                .cast(UserDetails.class)
                .map(userDetails -> new Username(userDetails.getUsername()))
                .switchIfEmpty(Mono.empty());

        var currentTime = LocalDateTime.now();

        if (entity.getId() == null) {
            entity.setCreatedDate(currentTime);
        }
        entity.setLastModifiedDate(currentTime);

        return user
                .map(u -> {
                            if (entity.getId() == null) {
                                entity.setCreatedBy(u);
                            }
                            entity.setLastModifiedBy(u);

                            return entity;
                        }
                )
                .defaultIfEmpty(entity);
    }
}

检查完整代码这里.

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