目录
hystrixDashboard服务监控断路器演示监控
hystrixDashboard服务监控
除了隔离依赖服务的调用以外,Hystrix还提供了准实时的调用监控(Hystrix Dashboard),Hystrix会持续地记录所有通过Hystrix发起的请求的执行信息,并以统计报表和图形的形式展示给用户,包括每秒执行多少请求多少成功,多少失败等。Netflix通过hystrix-metrics-event-stream项目实现了对以上指标的监控。Spring Cloud也提供了Hystrix Dashboard的整合,对监控内容转化成可视化界面。
1、新建cloud-consumer-hystrix-dashboard9001仪表盘监控模块
2、修改pom.xml文件引入仪表盘依赖
核心依赖:spring-cloud-starter-netflix-hystrix-dashboard
注意:所有的图形化展示,都需要引入spring-boot-starter-actuator依赖,在8001、8002上都需要引入 - <?xml version="1.0" encoding="UTF-8"?>
- <project xmlns="http://maven.apache.org/POM/4.0.0"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
- <parent>
- <artifactId>springcloud2022</artifactId>
- <groupId>com.zcl.springcloud</groupId>
- <version>1.0-SNAPSHOT</version>
- </parent>
- <modelVersion>4.0.0</modelVersion>
- <artifactId>cloud-consumer-hystrix-dashboard9001</artifactId>
- <properties>
- <maven.compiler.source>8</maven.compiler.source>
- <maven.compiler.target>8</maven.compiler.target>
- </properties>
- <dependencies>
- <dependency>
- <groupId>org.springframework.cloud</groupId>
- <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
- </dependency>
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-actuator</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>
- </project>
复制代码3、添加YAML配置文件
server:
port: 9001
4、建立启动类
必须要加上@EnableHystrixDashboard注解激活 - package com.zcl.springcloud;
- import org.springframework.boot.SpringApplication;
- import org.springframework.boot.autoconfigure.SpringBootApplication;
- import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
- /**
- * 描述:仪表盘启动类
- */
- @SpringBootApplication
- @EnableHystrixDashboard
- public class HystrixDashboardMain9001 {
- public static void main(String[] args) {
- SpringApplication.run(HystrixDashboardMain9001.class, args);
- }
- }
复制代码5、启动项目
启动项目测试:http://localhost:901/hystrix
使用方法:在下面页面中输入需要进行监控的地址即可
断路器演示监控
监控8001注意事项
1、必须要有如下的两个依赖 - <!--web-->
- <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>
复制代码2、对启动类的修改
注意:新版本Hystrix需要在主启动类MainAppHystrix8001中指定监控路径,否则会出现报错 - package com.zcl.springcloud;
- import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
- import org.springframework.boot.SpringApplication;
- import org.springframework.boot.autoconfigure.SpringBootApplication;
- import org.springframework.boot.web.servlet.ServletRegistrationBean;
- import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
- import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
- import org.springframework.context.annotation.Bean;
- /**
- * 描述:熔断限流启动类
- */
- @SpringBootApplication
- @EnableEurekaClient
- @EnableCircuitBreaker
- public class PaymentHystrixMain8001 {
- public static void main(String[] args) {
- SpringApplication.run(PaymentHystrixMain8001.class, args);
- }
- /**
- *此配置是为了服务监控而配置,与服务容错本身无关,springcloud升级后的坑
- *ServletRegistrationBean因为springboot的默认路径不是"/hystrix.stream",
- *只要在自己的项目里配置上下面的servlet就可以了
- */
- @Bean
- public ServletRegistrationBean getServlet() {
- HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
- ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
- registrationBean.setLoadOnStartup(1);
- registrationBean.addUrlMappings("/hystrix.stream");
- registrationBean.setName("HystrixMetricsStreamServlet");
- return registrationBean;
- }
- }
复制代码 监控测试
启动7001Eureka服务中心
观察监控窗口
9001监控8001
8001地址测试
先访问正确地址,再访问错误地址,再正确地址,会发现图示断路器都是慢慢放开的。
http://localhost:8001/payment/circuit/31:正常的访问
http://localhost:8001/payment/circuit/-31:异常访问
监控状态
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