SpringCloud-Sleuth服务追踪

简介

Spring Cloud Sleuth组件来实现微服务追踪。它可以追踪每个网络请求，了解它们经过了哪些微服务，延迟多少，每个请求所耗费的时间等。

zipkin

Zipkin是一款开源的分布式实时数据追踪系统（Distributed Tracking System）。其主要功能是聚集来自各个异构系统的实时监控数据。

下载zipkin

阿里云下载zipkin

启动zipkin-server

访问http://127.0.0.1:9411/zipkin/，打开客户端

zipkin服务追踪

搭建spring cloud项目

以Consul做为注册中心，搭建spring cloud项目

创建maven子模块，命名为cloud-consumer80-zipkin

①导入依赖

    <dependencies>
        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-zipkinartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-openfeignartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-consul-discoveryartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>
    dependencies>

②创建application.yml配置文件，配置zipkin

server:
  port: 80
 
spring:
  application:
    name: consumer-zipkin
  cloud:
    consul:
      host: localhost
      port: 8500
      discovery:
        service-name: ${spring.application.name}
  #服务追踪sleuth，zipkin相关配置
  zipkin:
    base-url: http://localhost:9411 #zipkin服务端地址
  sleuth:
    sampler:
      probability: 1

③创建启动类

@EnableFeignClients
@SpringBootApplication
public class ConsumerZipkin80 {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerZipkin80.class, args);
    }
}

④创建service接口

@Component
@FeignClient("cloud-provider")  //服务提供者在注册中心里的昵称
public interface IConsumerService {
    //对应服务提供者getUUID方法
    @GetMapping("/provider/getUUID")
    public String getUUID();
}

⑤创建controller控制类

@RequestMapping("consumer")
@RestController
public class ConsumerController {
    @Autowired
    private IConsumerService consumerService;
 
    @GetMapping("/getUUID")
    public String getUUID() {
        return consumerService.getUUID();
    }
}

测试

①依次启动Consul注册中心，Zipkin服务端，服务提供者cloud-provider8001和服务消费者cloud-consumer80-zipkin

②浏览器访问http://localhost/consumer/getUUID，向服务消费者发送请求

 ③浏览器访问http://127.0.0.1:9411/zipkin/，打开zipkin客户端，点击RUN QUERY追踪请求