Hystrix仪表盘监控Hystrix Dashboard

目录

Hystrix仪表盘监控介绍

HystrixDashboard

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Hystrix仪表盘监控介绍

 Hystrix仪表盘( Hystrix Dashboard),就像汽车的仪表盘实时显示汽车的各项数据一样, Hystrix仪表盘主要用来监控 Hystrix的实时运行状态,通过它我们可以看到HystriX的各项指标信息,从而快速发现系统中存在的问题进而解决要使用Hystriⅸ仪表盘功能,我们首先需要有一个Hystrix Dashboard,这个功能我们可以在原来的消费者应用上添加,让原来的消费者应用具备Hystrix仪表 盘功能,但一般地微服务架构思想是推崇服务的拆分, Hystrix Dashboard也是一个服务,所以通常会单独创建一个新的工程专门用做Hystrix Dashboard服务。

HystrixDashboard

创建工程HystrixDashboard，引入依赖：

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
            <version>2.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

在启动类添加@EnableHystrixDashboard注解，并且手动添加启动参数关闭版本检查等。

@SpringBootApplication
@EnableHystrixDashboard
public class HystrixDashboardApplication {

    public static void main(String[] args) {
        System.setProperty("spring.cloud.compatibility-verifier.enabled", "false");
        SpringApplication.run(HystrixDashboardApplication.class, args);
    }

}

由于springboot2.4.x以后，没有ConfigurationBeanFactoryMetadata类，容易启动项目报错，这里我们创建org.springframework.boot.context.properties包，手动添加这个类：

/*
 * Copyright 2012-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.context.properties;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.annotation.AnnotationUtils;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

/**
 * Utility class to memorize {@code @Bean} definition metadata during initialization of
 * the bean factory.
 *
 * @author Dave Syer
 * @since 1.1.0
 * @deprecated since 2.2.0 for removal in 2.4.0 in favor of
 * {@link ConfigurationPropertiesBean}
 */
@Deprecated
public class ConfigurationBeanFactoryMetadata implements ApplicationContextAware {

    /**
     * The bean name that this class is registered with.
     */
    public static final String BEAN_NAME = ConfigurationBeanFactoryMetadata.class.getName();

    private ConfigurableApplicationContext applicationContext;

    public <A extends Annotation> Map<String, Object> getBeansWithFactoryAnnotation(Class<A> type) {
        Map<String, Object> result = new HashMap<>();
        for (String name : this.applicationContext.getBeanFactory().getBeanDefinitionNames()) {
            if (findFactoryAnnotation(name, type) != null) {
                result.put(name, this.applicationContext.getBean(name));
            }
        }
        return result;
    }

    public <A extends Annotation> A findFactoryAnnotation(String beanName, Class<A> type) {
        Method method = findFactoryMethod(beanName);
        return (method != null) ? AnnotationUtils.findAnnotation(method, type) : null;
    }

    public Method findFactoryMethod(String beanName) {
        ConfigurableListableBeanFactory beanFactory = this.applicationContext.getBeanFactory();
        if (beanFactory.containsBeanDefinition(beanName)) {
            BeanDefinition beanDefinition = beanFactory.getMergedBeanDefinition(beanName);
            if (beanDefinition instanceof RootBeanDefinition) {
                return ((RootBeanDefinition) beanDefinition).getResolvedFactoryMethod();
            }
        }
        return null;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = (ConfigurableApplicationContext) applicationContext;
    }

    static void register(BeanDefinitionRegistry registry) {
        if (!registry.containsBeanDefinition(BEAN_NAME)) {
            GenericBeanDefinition definition = new GenericBeanDefinition();
            definition.setBeanClass(ConfigurationBeanFactoryMetadata.class);
            definition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
            registry.registerBeanDefinition(ConfigurationBeanFactoryMetadata.BEAN_NAME, definition);
        }
    }

}

修改配置文件：

server:
  port: 7006
hystrix:
  dashboard:
    proxyStreamAllowList: "127.0.0.1"

启动项目，访问http://127.0.0.1:7006/hystrix，就成功了，红圈部分是我们要监控的url地址：

然后我们需要监控EurekaTest，首先添加依赖：

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
            <version>2.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
            <version>2.2.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

然后启动类添加：

@EnableEurekaClient
@EnableCircuitBreaker
@SpringBootApplication
public class EurekaTestApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaTestApplication.class, args);
    }
    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}

修改配置文件：

server:
  port: 7003
spring:
  application:
    name: EurekaTest
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:7001/eureka
  instance:
    lease-renewal-interval-in-seconds: 1    #间隔1s，向服务端发送一次心跳，证明自己依然“存活”
    lease-expiration-duration-in-seconds: 2    # 告诉服务端，如果我2s之内没有给你发心跳，就代表我“死”了，请将我踢掉
#用来暴露endpoints的，由于endpoints中会包含很多敏感信息，
#除了health和info两个支持直接访问外，其他的默认不能直接访问，
#所以我们让他们都能访问(*)，或者指定springboot的监控端点访问权限，
#*表示所有的端点都允许访问，如果只写hystrix.stream，他会把默认的info,health端点关闭
management:
  endpoints:
    web:
      exposure:
        include: '*'

最后启动所有项目，先访问我们熔断限制的接口：127.0.0.1:7003/test/hello，然后再访问127.0.0.1:7003/actuator/hystrix.stream，会显示如下内容：

如果不先访问熔断限流的接口，则会一直ping,ping···,然后再仪表盘把127.0.0.1:7003/actuator/hystrix.stream接口放进去，会显示监控效果。

原文地址：https://blog.csdn.net/weixin_55987175/article/details/145098410

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