3
@FeignClient(...)
public interface SomeClient {
@RequestMapping(value = "/someUrl", method = POST, consumes = "application/json")
    ResponseEntity<String> createItem(...);

}

有没有办法找到 createItem api 调用的响应时间?我们正在使用弹簧靴、执行器、普罗米修斯。

4

3 回答 3

6

我们有直接和定制的方式来记录假装客户的请求和响应(包括响应时间)。我们必须注入 feign.Logger.Level bean,就是这样。

  1. 默认/直截了当的方式
@Bean
Logger.Level feignLoggerLevel() {
  return Logger.Level.BASIC;
}

有 BASIC、FULL、HEADERS、NONE(默认)日志记录级别可 用于更多详细信息

上面的 bean 注入将为您提供以下格式的 feign 请求和响应的日志记录:

请求

参考

log(configKey, "---> %s %s HTTP/1.1", request.httpMethod().name(), request.url());

ex:2019-09-26 12:50:12.163 [DEBUG] [http-nio-4200-exec-5] [com.sample.FeignClient:72] [FeignClient#getUser] ---> END HTTP (0-byte body)

其中的configkey意思是FeignClientClassName#FeignClientCallingMethodNameApiClient#apiMethod

回复

参考

log(configKey, "<--- HTTP/1.1 %s%s (%sms)", status, reason, elapsedTime);

ex:2019-09-26 12:50:12.163 [DEBUG] [http-nio-4200-exec-5] [com.sample.FeignClient:72] [FeignClient#getUser] <--- HTTP/1.1 200 OK (341ms)

elapsedTime是 API 调用所花费的响应时间。

注意:如果您更喜欢 feign 客户端日志记录的默认方式,那么我们还必须考虑底层应用程序日志记录级别,因为feign.Slf4jLogger带有 feign 请求的类日志记录和带有DEBUG级别的响应详细信息(请参阅)。如果底层日志记录级别高于 DEBUG,那么您可能需要为feign日志记录包/类指定显式记录器,否则它将无法工作。

  1. 自定义 方式 如果您更喜欢使用自定义格式进行日志记录,那么您可以扩展feign.Logger类并自定义日志记录。例如,如果我想将请求和响应的标头详细信息记录在单行中作为列表(默认情况下 Logger.Level.HEADERS 将标头打印在多行中):
package com.test.logging.feign;

import feign.Logger;
import feign.Request;
import feign.Response;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;

import static feign.Logger.Level.HEADERS;

@Slf4j
public class customFeignLogger extends Logger {

    @Override
    protected void logRequest(String configKey, Level logLevel, Request request) {

        if (logLevel.ordinal() >= HEADERS.ordinal()) {
            super.logRequest(configKey, logLevel, request);
        } else {
            int bodyLength = 0;
            if (request.requestBody().asBytes() != null) {
                bodyLength = request.requestBody().asBytes().length;
            }
            log(configKey, "---> %s %s HTTP/1.1 (%s-byte body) %s", request.httpMethod().name(), request.url(), bodyLength, request.headers());
        }
    }

    @Override
    protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response, long elapsedTime)
            throws IOException {
        if (logLevel.ordinal() >= HEADERS.ordinal()) {
            super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
        } else {
            int status = response.status();
            Request request = response.request();
            log(configKey, "<--- %s %s HTTP/1.1 %s (%sms) %s", request.httpMethod().name(), request.url(), status, elapsedTime, response.headers());
        }
        return response;
    }


    @Override
    protected void log(String configKey, String format, Object... args) {
        log.debug(format(configKey, format, args));
    }

    protected String format(String configKey, String format, Object... args) {
        return String.format(methodTag(configKey) + format, args);
    }
}

我们还必须注入 customFeignLogger 类 bean

  @Bean
    public customFeignLogger customFeignLogging() {
        return new customFeignLogger();
    }

如果您自己构建 FeignClient,那么您可以使用自定义的 logger 构建它:

 Feign.builder().logger(new customFeignLogger()).logLevel(Level.BASIC).target(SomeFeignClient.class,"http://localhost:8080");
于 2019-09-29T18:50:22.783 回答
1

将以下注释添加到您的项目中。

package com.example.annotation

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface DebugTracking {
    @Aspect
    @Component
    public static class DebugTrackingAspect {
        @Around("@annotation(com.example.annotation.DebugTracking)")
        public Object trackExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
            StopWatch stopWatch = new StopWatch();
            stopWatch.start(joinPoint.toShortString());

            Exception exceptionThrown = null;

            try {
                // Execute the joint point as usual
                return joinPoint.proceed();

            } catch (Exception ex) {
                exceptionThrown = ex;
                throw ex;

            } finally {
                stopWatch.stop();

                System.out.println(String.format("%s took %dms.", stopWatch.getLastTaskName(), stopWatch.getLastTaskTimeMillis()));

                if (exceptionThrown != null) {
                    System.out.println(String.format("Exception thrown: %s", exceptionThrown.getMessage()));
                    exceptionThrown.printStackTrace();

                }
            }
        }
    }
}

然后@FeignClient@DebugTracking.

于 2019-05-15T03:12:43.890 回答
0

我正在使用以下(使用 Spring 和 Lombok):

@Configuration // from Spring
@Slf4j // from Lombok
public class MyFeignConfiguration {
    @Bean // from Spring
    public MyFeignClient myFeignClient() {
        return Feign.builder()
            .logger(new Logger() {
                @Override
                protected void log(String configKey, String format, Object... args) {
                    LOG.info( String.format(methodTag(configKey) + format, args)); // LOG is the Lombok Slf4j object
                }
            })
            .logLevel(Logger.Level.BASIC) // see https://cloud.spring.io/spring-cloud-netflix/multi/multi_spring-cloud-feign.html#_feign_logging
            .target(MyFeignClient.class,"http://localhost:8080");
    }
}
于 2021-04-20T14:53:21.247 回答