如何在Resilence4J中实现多个相同结构的断路器

Question

我是Resilience4J的新手，并试图与Spring Boot集成。

我的应用程序有几个远程系统调用。我希望所有远程呼叫都有相同的断路器配置。

@Bean
    public CircuitBreakerConfig circuitBreakerConfig() {
        return CircuitBreakerConfig.custom().slidingWindowType(SlidingWindowType.COUNT_BASED).slidingWindowSize(6)
                .failureRateThreshold(50).waitDurationInOpenState(Duration.ofSeconds(10))
                .permittedNumberOfCallsInHalfOpenState(3).recordExceptions(HttpClientErrorException.class, HttpServerErrorException.class,TimeoutException.class,SdkClientException.class,AmazonServiceException.class,SQLException.class,JDBCException.class, DataAccessException.class).build();
    }

    @Bean
    public CircuitBreaker circuitBreaker(CircuitBreakerConfig circuitBreakerConfig) {
        return CircuitBreaker.of("circuit-config", circuitBreakerConfig);
    }

    @Bean
    public RetryConfig retryConfig() {
        return RetryConfig.custom().maxAttempts(3).waitDuration(Duration.ofMillis(1000))
                .retryExceptions(HttpClientErrorException.class, HttpServerErrorException.class,TimeoutException.class,SdkClientException.class,AmazonServiceException.class,SQLException.class,JDBCException.class, DataAccessException.class).build();
    }

    @Bean
    public Retry retry() {
        return Retry.of("retry-config", retryConfig());
    }

Decorators.ofRunnable(systemA::callA)
            .withCircuitBreaker(circuitBreaker)
            .withRetry(retry)
            .decorate()
            .run();

Decorators.ofRunnable(systemB::callB)
            .withCircuitBreaker(circuitBreaker)
            .withRetry(retry)
            .decorate()
            .run();

Answer 1

您应该使用Spring Boot2启动器和外部配置。然后将CircuitBreakerRegistry注入代码或使用注释。