Spring Cloud Sleuth 分布式请求链路跟踪

今天药忘吃喽~ 2024-03-22 22:24 81阅读 0赞

## Sleuth是什么 ##

### 为什么会出现这个技术？要解决哪些问题？ ###

![在这里插入图片描述][44f20edb2e5b4c56a6567a8d31d0111c.png]

### 是什么 ###

![在这里插入图片描述][8550b4f7d9ed44d38e0bc11cec631a83.png]

## Sleuth之zipkin搭建安装 ##

**1. zipkin 下载地址：https://zipkin.io/pages/quickstart.html**  
![在这里插入图片描述][0402297cbd62470ca788ec012cdb4f23.png]  
在目录下打开 cmd ，运行 jar

java -jar zipkin-server-2.24.2-exec.jar

![在这里插入图片描述][a63b52dfff404bb687fc08822d0ac001.png]  
![在这里插入图片描述][840e5bc585744aec9864c26cf40ce668.png]  
![在这里插入图片描述][64092c62061e48309ba8bcd3c5397266.png]  
![在这里插入图片描述][8823781b91c94b19b401b60865435a88.png]

## Sleuth链路监控展现 ##

**1. 服务提供者: cloud-provider-payment8001**  
**1.1 pom.xml 添加以下依赖**

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-zipkin</artifactId>
    </dependency>

**1.2 application.yml**

spring:
      application:
        name: cloud-payment-service
    
      zipkin: #<-------------------------------------关键 
          base-url: http://localhost:9411
      sleuth: #<-------------------------------------关键
        sampler:
        #采样率值介于 0 到 1 之间，1 则表示全部采集
        probability: 1
        
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource            # 当前数据源操作类型
        driver-class-name: org.gjt.mm.mysql.Driver              # mysql驱动包
        url: jdbc:mysql://localhost:3306/db2019?useUnicode=true&characterEncoding=utf-8&useSSL=false
        username: root
        password: 123456

**1.3 业务类PaymentController**

@RestController
    @Slf4j
    public class PaymentController {
        
        
        ...
        
     	@GetMapping("/payment/zipkin")
        public String paymentZipkin() {
        
            return "hi ,i'am paymentzipkin server fall back，welcome to here, O(∩_∩)O哈哈~";
        }    
    }

**2. 服务消费者(调用方) cloue-consumer-order80**  
**2.1 pom.xml 添加以下依赖**

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zipkin</artifactId>
            </dependency>

**2.1 application.yml**

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

**2.2 业务类OrderController**

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

**3. 依次启动eureka7001/8001/80，然后80调用8001几次测试下**  
**4. 打开浏览器访问: http://localhost:9411**  
![在这里插入图片描述][820bcdc1dfe64681b4b16c74fcbc6887.png]

[44f20edb2e5b4c56a6567a8d31d0111c.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/4cf6aa67d0de4abd9a899cd74071eaa8.png
[8550b4f7d9ed44d38e0bc11cec631a83.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/215e1b9716044f4f857221ecafaddd8c.png
[0402297cbd62470ca788ec012cdb4f23.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/82b0a4bde225475ba025bce556565450.png
[a63b52dfff404bb687fc08822d0ac001.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/4c77148292874516b7ffd85eda426f34.png
[840e5bc585744aec9864c26cf40ce668.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/90ef7664695846a19a455f44c868a2c1.png
[64092c62061e48309ba8bcd3c5397266.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/e90f6a95875440e0b3bbd7c56eb20c96.png
[8823781b91c94b19b401b60865435a88.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/3273af2f51304a799157d812104925b4.png
[820bcdc1dfe64681b4b16c74fcbc6887.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/2f9fbef49bfc4fa8a6888fcb2bf6575b.png