spring-cloud bus kafka RemoteApplicationEvent originService 刷新时为 null

Question

我有两个不同的 spring-cloud 服务，它们使用 spring-cloud-starter-bus-kafka 从集中式服务接收新的配置刷新。 在集中调用 refreshBusEndpoint.busRefresh() 时

• 服务-A 接收：RemoteApplicationEvent

originService = null
destinationService = "**"
id = "6a8d95fc-5954-4eac-b45d-ba8b34da1f9f"
timestamp = 1590192298082

• 服务-B 收到：

originService = "centralize-configuration:8888:3f31c745f983d0dd22d9988758d518a0"
destinationService = "**"
id = "7e986811-1c12-4d85-939c-054c5de9171f"
timestamp = 1590221239086

问题是 originService = null 会导致错误

-> BusAutoConfiguration acceptRemote(RemoteApplicationEvent event)
-> !this.serviceMatcher.isFromSelf(event)
-> matcher.match(originService, serviceId)
-> AntPathMatcher.class
-> match(), doMatch() 

语句由 null 指针停止：pattern.startsWith(this.pathSeparator)

• 两种服务都使用：

    spring-cloud.version -> Greenwich.RELEASE 
    spring.boot.version -> 2.1.6.RELEASE 
    spring.kafka.version -> 2.2.9.RELEASE 

有人可以用 originService = null 解释我的服务发生事件的原因吗？

Answer 1

解决方案示例：

@RequestMapping("/hello")
@RestController
public class HelloController {

    @Autowired
    private ApplicationContext applicationContext;
    @Autowired
    private BusProperties busProperties;

    @GetMapping("/test")
    public String test(@RequestParam("message") String message) {
        String id = busProperties.getId();
        applicationContext.publishEvent(new CustomApplicationEvent(this, id, null, message));
    return "Sending succeeded!";
    }
}

所以这个想法是手动提供 serviceId 。

Source: https://github.com/spring-cloud/spring-cloud-bus/issues/133#issuecomment-467755362 https://programmer.ink/think/spring-cloud-bus-custom-event-stepping.html