为什么会出现这个技术?需要解决哪些问题? 官网:https://github.com/spring-cloud/spring-cloud-sleuth
在我们服务调用的时候经常会有
一个服务调一个服务多个微服务调用
为了方便我们查看服务之间的调用层次
我们产生的了链路追踪
SpringCloud从F版起已不需要自己构建Zipkin server了,只需要调用jar包即可
运行jar
查看 http://localhost:9411/zipkin/
上图看起来链路十分的复杂
下图相对简单清晰一些
继续找到我们最初的服务提供者cloud-provider-payment8001
依赖
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-zipkinartifactId>
dependency>
配置
server:
port: 8001
spring:
application:
name: cloud-payment-service
zipkin:
base-url: http://localhost:9411
sleuth:
sampler:
probability: 1
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: org.gjt.mm.mysql.Driver
url:
username: root
password:
mybatis:
mapperLocations: classpath:mapper/*.xml
type-aliases-package: com.atguigu.springcloud.entities
eureka:
client:
register-with-eureka: true
fetchRegistry: true
service-url:
defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka #集群版
instance:
instance-id: payment8001
prefer-ip-address: true
添加一个新方法
@GetMapping("/payment/zipkin")
public String paymentZipkin()
{
return "hi ,i'am paymentzipkin server fall back,welcome to atguigu,O(∩_∩)O哈哈~";
}
久违的服务者 cloud-consumer-order80
依赖
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-zipkinartifactId>
dependency>
配置
server:
port: 80
spring:
application:
name: cloud-order-service
zipkin:
base-url: http://localhost:9411
sleuth:
sampler:
probability: 1
eureka:
client:
#表示是否将自己注册进EurekaServer默认为true。
register-with-eureka: false
#是否从EurekaServer抓取已有的注册信息,默认为true。单节点无所谓,集群必须设置为true才能配合ribbon使用负载均衡
fetchRegistry: true
service-url:
#单机
#defaultZone: http://localhost:7001/eureka
# 集群
defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka # 集群版
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;
}
80调用8001几次测试下
查看层级 查看依赖关系
到这里 springcloud netflix 的学习就结束啦 !!! 完结撒花