我在想这到底是款什么神仙工具，这么牛逼（中）

@RetrofitClient(baseUrl = "${test.baseUrl}", poolName="test1")
public interface HttpApi {
    @GET("person")
    Result<Person> getPerson(@Query("id") Long id);
}

retrofit:
  # 日志打印拦截器
  logging-interceptor: com.github.lianjiatech.retrofit.spring.boot.interceptor.DefaultLoggingInterceptor

retrofit:
  # 请求重试拦截器
  retry-interceptor: com.github.lianjiatech.retrofit.spring.boot.retry.DefaultRetryInterceptor

/**
 * 错误解码器。ErrorDecoder.
 * 当请求发生异常或者收到无效响应结果的时候，将HTTP相关信息解码到异常中，无效响应由业务自己判断
 *
 * When an exception occurs in the request or an invalid response result is received, the HTTP related information is decoded into the exception,
 * and the invalid response is determined by the business itself.
 *
 * @author 陈添明
 */
public interface ErrorDecoder {
    /**
     * 当无效响应的时候，将HTTP信息解码到异常中，无效响应由业务自行判断。
     * When the response is invalid, decode the HTTP information into the exception, invalid response is determined by business.
     *
     * @param request  request
     * @param response response
     * @return If it returns null, the processing is ignored and the processing continues with the original response.
     */
    default RuntimeException invalidRespDecode(Request request, Response response) {
        if (!response.isSuccessful()) {
            throw RetrofitException.errorStatus(request, response);
        }
        return null;
    }
    /**
     * 当请求发生IO异常时，将HTTP信息解码到异常中。
     * When an IO exception occurs in the request, the HTTP information is decoded into the exception.
     *
     * @param request request
     * @param cause   IOException
     * @return RuntimeException
     */
    default RuntimeException ioExceptionDecode(Request request, IOException cause) {
        return RetrofitException.errorExecuting(request, cause);
    }
    /**
     * 当请求发生除IO异常之外的其它异常时，将HTTP信息解码到异常中。
     * When the request has an exception other than the IO exception, the HTTP information is decoded into the exception.
     *
     * @param request request
     * @param cause   Exception
     * @return RuntimeException
     */
    default RuntimeException exceptionDecode(Request request, Exception cause) {
        return RetrofitException.errorUnknown(request, cause);
    }
}

@Component
public class SourceInterceptor extends BaseGlobalInterceptor {
    @Override
    public Response doIntercept(Chain chain) throws IOException {
        Request request = chain.request();
        Request newReq = request.newBuilder()
                .addHeader("source", "test")
                .build();
        return chain.proceed(newReq);
    }
}

retrofit:
  # 是否启用熔断降级
  enable-degrade: true
  # 熔断降级实现方式(目前仅支持Sentinel)
  degrade-type: sentinel
  # 资源名称解析器
  resource-name-parser: com.github.lianjiatech.retrofit.spring.boot.degrade.DefaultResourceNameParser

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.TYPE})
@Documented
public @interface Degrade {
    /**
     * RT threshold or exception ratio threshold count.
     */
    double count();
    /**
     * Degrade recover timeout (in seconds) when degradation occurs.
     */
    int timeWindow() default 5;
    /**
     * Degrade strategy (0: average RT, 1: exception ratio).
     */
    DegradeStrategy degradeStrategy() default DegradeStrategy.AVERAGE_RT;
}

@Slf4j
@Service
public class HttpDegradeFallback implements HttpDegradeApi {
    @Override
    public Result<Integer> test() {
        Result<Integer> fallback = new Result<>();
        fallback.setCode(100)
                .setMsg("fallback")
                .setBody(1000000);
        return fallback;
    }
}
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@Slf4j
@Service
public class HttpDegradeFallbackFactory implements FallbackFactory<HttpDegradeApi> {
    /**
     * Returns an instance of the fallback appropriate for the given cause
     *
     * @param cause fallback cause
     * @return 实现了retrofit接口的实例。an instance that implements the retrofit interface.
     */
    @Override
    public HttpDegradeApi create(Throwable cause) {
        log.error("触发熔断了! ", cause.getMessage(), cause);
        return new HttpDegradeApi() {
            @Override
            public Result<Integer> test() {
                Result<Integer> fallback = new Result<>();
                fallback.setCode(100)
                        .setMsg("fallback")
                        .setBody(1000000);
                return fallback;
            }
    }
}
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@Bean
@Autowired
public ServiceInstanceChooser serviceInstanceChooser(LoadBalancerClient loadBalancerClient) {
    return new SpringCloudServiceInstanceChooser(loadBalancerClient);
}

@RetrofitClient(serviceId = "${jy-helicarrier-api.serviceId}", path = "/m/count", errorDecoder = HelicarrierErrorDecoder.class)
@Retry
public interface ApiCountService {
}