SpringCloud Sleuth分布式请求链路跟踪

今天药忘吃喽~ 2023-10-11 20:39 25阅读 0赞

**目录**

一、概述

二、搭建链路监控步骤

（一）下载zipkin jar包

（二）服务提供者8001

（三）服务消费者80

（四）依次启动eureka7001/8001/80

（五）打开浏览器访问：http://localhost:9411

--------------------

## 一、概述 ##

在微服务框架中，一个由客户端发起的请求在后端系统中会经过多个不同的的服务节点调用来协同产生最后的请求结果，每一个前端请求都会形成一条复杂的分布式服务调用链路，链路中的任何一环出现高延时或错误都会引起整个请求最后的失败。

![80ef90581e1a4c72a4602484127341b9.png][]

官网：

[GitHub - spring-cloud/spring-cloud-sleuth: Distributed tracing for spring cloud][GitHub - spring-cloud_spring-cloud-sleuth_ Distributed tracing for spring cloud]

> Spring Cloud Sleuth提供了一套完整的服务跟踪的解决方案，在分布式系统中提供追踪解决方案并且兼容支持了zipkin

## 二、搭建链路监控步骤 ##

### （一）下载zipkin jar包 ###

SpringCloud从F版起已不需要自己构建Zipkin Server了，只需调用jar包即可

下载地址：[Central Repository: io/zipkin/zipkin-server (maven.org)][Central Repository_ io_zipkin_zipkin-server _maven.org]

以Java jar包的方式启动

![a0ad032cd3f84e03a2ed1bd55ac4acec.png][]

控制台 [http://localhost:9411/zipkin/][http_localhost_9411_zipkin]

![f06584a4e279472abe01e4245ff4a593.png][]

**术语**

**① 完整的调用链路** ，表示一请求链路，一条链路通过Trace Id唯一标识，Span标识发起的请求信息，各span通过parent id 关联起来

![d4d240b3ad294a589a323856d8d2ae61.png][]

②![c563180b4e3041e79a7dd84d28fd88ae.png][]

**③ 名词解释**

**Trace**:类似于树结构的Span集合，表示一条调用链路，存在唯一标识

**span**:表示调用链路来源，通俗的理解span就是一次请求信息

![e4b30e6833d94773848ce1c2327b5384.png][]

### （二）服务提供者8001 ###

**POM**

<dependencies>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zipkin</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            <dependency>
                <groupId>com.atguigu.springcloud</groupId>
                <artifactId>cloud-api-commons</artifactId>
                <version>${project.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.10</version>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>

**YML**

spring:
      application:
        name: cloud-payment-service
      zipkin:
        base-url: http://localhost:9411
      sleuth:
        sampler:
          #采样率值介于 0 到 1 之间，1 则表示全部采集
         probability: 1

**Controller**

@GetMapping("/payment/zipkin")
    public String paymentZipkin()
    {
        return "hi ,i'am paymentzipkin server fall back，welcome to atguigu，O(∩_∩)O哈哈~";
    }

### （三）服务消费者80 ###

**POM**

**YML**

spring:
        application:
            name: cloud-order-service
        zipkin:
          base-url: http://localhost:9411
        sleuth:
          sampler:
            probability: 1

**Controller**

// ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }

### （四）依次启动eureka7001/8001/80 ###

**80调用8001几次测试下**

### （五）打开浏览器访问：http://localhost:9411 ###

**会出现以下界面**

![f09090a7388540608fbbc6c5f456fe71.png][]

**点击蓝色条可以查看具体链路调用情况**

![a39cef9d389f404ca814a7587c88cbc4.png][]

**查看依赖关系**

![a798d3d9f9e74f88a339455a2735a227.png][]

**原理**

![0c9d9f71e94840229c21998422211b22.png][]

[80ef90581e1a4c72a4602484127341b9.png]: https://img-blog.csdnimg.cn/80ef90581e1a4c72a4602484127341b9.png
[GitHub - spring-cloud_spring-cloud-sleuth_ Distributed tracing for spring cloud]: https://github.com/spring-cloud/spring-cloud-sleuth
[Central Repository_ io_zipkin_zipkin-server _maven.org]: https://repo1.maven.org/maven2/io/zipkin/zipkin-server/
[a0ad032cd3f84e03a2ed1bd55ac4acec.png]: https://img-blog.csdnimg.cn/a0ad032cd3f84e03a2ed1bd55ac4acec.png
[http_localhost_9411_zipkin]: http://localhost:9411/zipkin/
[f06584a4e279472abe01e4245ff4a593.png]: https://img-blog.csdnimg.cn/f06584a4e279472abe01e4245ff4a593.png
[d4d240b3ad294a589a323856d8d2ae61.png]: https://img-blog.csdnimg.cn/d4d240b3ad294a589a323856d8d2ae61.png
[c563180b4e3041e79a7dd84d28fd88ae.png]: https://img-blog.csdnimg.cn/c563180b4e3041e79a7dd84d28fd88ae.png
[e4b30e6833d94773848ce1c2327b5384.png]: https://img-blog.csdnimg.cn/e4b30e6833d94773848ce1c2327b5384.png
[f09090a7388540608fbbc6c5f456fe71.png]: https://img-blog.csdnimg.cn/f09090a7388540608fbbc6c5f456fe71.png
[a39cef9d389f404ca814a7587c88cbc4.png]: https://img-blog.csdnimg.cn/a39cef9d389f404ca814a7587c88cbc4.png
[a798d3d9f9e74f88a339455a2735a227.png]: https://img-blog.csdnimg.cn/a798d3d9f9e74f88a339455a2735a227.png
[0c9d9f71e94840229c21998422211b22.png]: https://img-blog.csdnimg.cn/0c9d9f71e94840229c21998422211b22.png