Dashboard演示的僅僅是單機(jī)服務(wù)監(jiān)控，實(shí)際項(xiàng)目基本都是集群，所以這里集群監(jiān)控用的是turbine
turbine是基于Dashboard的。
先搞個(gè)集群；
再microservice-student-provider-hystrix-1004項(xiàng)目的基礎(chǔ)上再搞一個(gè)microservice-student-provider-hystrix-1005
代碼和配置都復(fù)制一份，然后修改幾個(gè)地方；
yml配置：
---
server:
port: 1004
context-path: /
spring:
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/mybatis_ssm?useUnicode=true&characterEncoding=utf8
username: root
password: 123
jpa:
hibernate:
ddl-auto: update
show-sql: true
application:
name: microservice-student
profiles: provider-hystrix-1004
eureka:
instance:
hostname: localhost
appname: microservice-student
instance-id: microservice-student:1004
prefer-ip-address: true
client:
service-url:
defaultZone: http://eureka2001.lingerqi.com:2001/eureka/,http://eureka2002.lingerqi.com:2002/eureka/,http://eureka2003.lingerqi.com:2003/eureka/
info:
groupId: com.lingerqi.testSpringcloud
artifactId: microservice-student-provider-hystrix-1004
version: 1.0-SNAPSHOT
userName: http://lingerqi.com
phone: 123456
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 1500
---
server:
port: 1005
context-path: /
spring:
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/mybatis_ssm?useUnicode=true&characterEncoding=utf8
username: root
password: 123
jpa:
hibernate:
ddl-auto: update
show-sql: true
application:
name: microservice-student
profiles: provider-hystrix-1005
eureka:
instance:
hostname: localhost
appname: microservice-student
instance-id: microservice-student:1005
prefer-ip-address: true
client:
service-url:
defaultZone: http://eureka2001.lingerqi.com:2001/eureka/,http://eureka2002.lingerqi.com:2002/eureka/,http://eureka2003.lingerqi.com:2003/eureka/
info:
groupId: com.lingerqi.testSpringcloud
artifactId: microservice-student-provider-hystrix-1005
version: 1.0-SNAPSHOT
userName: http://lingerqi.com
phone: 123456
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 1500
---
server:
port: 1006
context-path: /
spring:
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/mybatis_ssm?useUnicode=true&characterEncoding=utf8
username: root
password: 123
jpa:
hibernate:
ddl-auto: update
show-sql: true
application:
name: microservice-student
profiles: provider-hystrix-1006
eureka:
instance:
hostname: localhost
appname: microservice-student
instance-id: microservice-student:1006
prefer-ip-address: true
client:
service-url:
defaultZone: http://eureka2001.lingerqi.com:2001/eureka/,http://eureka2002.lingerqi.com:2002/eureka/,http://eureka2003.lingerqi.com:2003/eureka/
info:
groupId: com.lingerqi.testSpringcloud
artifactId: microservice-student-provider-hystrix-1006
version: 1.0-SNAPSHOT
userName: http://lingerqi.com
phone: 123456
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 1500
啟動(dòng)類(lèi)配置：
package com.lingerqi.microservicestudentproviderhystrix;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@EnableCircuitBreaker
@EntityScan("com.lingerqi.*.*")
@EnableEurekaClient
@SpringBootApplication
public class MicroserviceStudentProviderHystrixApplication {
public static void main(String[] args) {
SpringApplication.run(MicroserviceStudentProviderHystrixApplication.class, args);
}
}
這樣的話 就有了 hystrix集群服務(wù)；
我們新建項(xiàng)目microservice-student-consumer-hystrix-turbine-91
新增pom.xml依賴(lài)
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-turbine</artifactId>
</dependency>
application.yml:
server:
port: 91
context-path: /
eureka:
client:
service-url:
defaultZone: http://eureka2001.lingerqi.com:2001/eureka/,http://eureka2002.lingerqi.com:2002/eureka/,http://eureka2003.lingerqi.com:2003/eureka/
turbine:
app-config: microservice-student # 指定要監(jiān)控的應(yīng)用名稱(chēng)
clusterNameExpression: "'default'" #表示集群的名字為default
spring:
application:
name: turbine
新建啟動(dòng)類(lèi)MicroserviceStudentConsumerHystrixTurbine91Application 加注解：@EnableTurbine
package com.lingerqi.microservicestudentconsumerhystrixturbine91;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.cloud.netflix.turbine.EnableTurbine;
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
@EnableTurbine
public class MicroserviceStudentConsumerHystrixTurbine91Application {
public static void main(String[] args) {
SpringApplication.run(MicroserviceStudentConsumerHystrixTurbine91Application.class, args);
}
}
測(cè)試：
啟動(dòng)三個(gè)eureka，然后把1004 1005 帶hystrix的服務(wù)都啟動(dòng)；
microservice-student-consumer-80這個(gè)也啟動(dòng)，方便測(cè)試；
dashboard，turbine啟動(dòng)；
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輸入http://localhost:90/hystrix進(jìn)入儀表盤(pán)，輸入地址
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Feign、Hystrix整合
前面的代碼，用@HystrixCommand fallbackMethod是很不好的，因?yàn)楹蜆I(yè)務(wù)代碼耦合度太高，不利于維護(hù)，所以需要解耦，這我們講下Feign Hystrix整合。
1、microservice-student-provider-hystrix項(xiàng)目修改
我們不用原先那套。按照正常的邏輯來(lái)寫(xiě)；
StudentService加新的接口方法：
/**
* 測(cè)試Hystrix服務(wù)降級(jí)
* @return
*/
public Map<String,Object> hystrix();
實(shí)現(xiàn)類(lèi)：
@Override
public Map<String, Object> hystrix() {
Map<String,Object> map=new HashMap<String,Object>();
map.put("code", 200);
map.put("info","工號(hào)【"+port+"】正在為您服務(wù)");
return map;
}
StudentProviderController正常調(diào)用service方法：
/**
* 測(cè)試Hystrix服務(wù)降級(jí)
* @return
* @throws InterruptedException
*/
@ResponseBody
@GetMapping(value="/hystrix")
// @HystrixCommand(fallbackMethod="hystrixFallback")
public Map<String,Object> hystrix() throws InterruptedException{
Thread.sleep(100);
// Map<String,Object> map=new HashMap<String,Object>();
// map.put("code", 200);
// map.put("info","工號(hào)【"+port+"】正在為您服務(wù)");
return this.studentService.hystrix();
}
// public Map<String,Object> hystrixFallback() throws InterruptedException{
// Map<String,Object> map=new HashMap<String,Object>();
// map.put("code", 500);
// map.put("info", "系統(tǒng)【"+port+"】繁忙，稍后重試");
// return map;
// }
microservice-common項(xiàng)目新建FallbackFactory類(lèi)，解耦服務(wù)熔斷服務(wù)降級(jí)
StudentClientService接口，新增getInfo方法；
/**
* 服務(wù)熔斷降級(jí)
* @return
*/
@GetMapping(value="/student/hystrix")
public Map<String,Object> hystrix();
新建 StudentClientFallbackFactory 類(lèi)，實(shí)現(xiàn)FallbackFactory<StudentClientService>接口；
package com.lingerqi.microservicecommon.service;
import com.lingerqi.microservicecommon.entity.Student;
import feign.hystrix.FallbackFactory;
import org.springframework.stereotype.Component;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@Component
public class StudentClientFallbackFactory implements FallbackFactory<StudentClientService> {
@Override
public StudentClientService create(Throwable cause) {
return new StudentClientService() {
@Override
public boolean save(Student student) {
return false;
}
@Override
public List<Student> list() {
return null;
}
@Override
public Map<String, Object> hystrix() {
Map<String,Object> map=new HashMap<String,Object>();
map.put("code", 500);
map.put("info", "系統(tǒng)繁忙，稍后重試");
return map;
}
@Override
public Student get(Integer id) {
return null;
}
@Override
public boolean delete(Integer id) {
return false;
}
@Override
public String ribbon() {
return null;
}
};
}
}
StudentClientService接口的@FeignClient注解加下 fallbackFactory屬性
@FeignClient(value="MICROSERVICE-STUDENT",fallbackFactory=StudentClientFallbackFactory.class)
microservice-student-consumer-feign-80修改 支持Hystrix
StudentConsumerFeignController新增方法調(diào)用
/**
* Feign整合Hystrix服務(wù)熔斷降級(jí)
* @return
* @throws InterruptedException
*/
@GetMapping(value="/hystrix")
public Map<String,Object> hystrix() throws InterruptedException{
return studentClientService.hystrix();
}
microservice-student-consumer-feign-80的application.yml加上hystrix支持
feign:
hystrix:
enabled: true
1、microservice-student-consumer-feign-80的啟動(dòng)類(lèi)上添加公共模塊
@ComponentScan(basePackages = {"com.lingerqi.microservicecommon","com.lingerqi.microservicestudentconsumerfeign80"})
注意：
1、公共子項(xiàng)目與當(dāng)前子項(xiàng)目的基包都要掃描到；
2、只指定公共子模塊為基包會(huì)導(dǎo)致本子項(xiàng)目的springmvc功能失效；
3、只指定本子項(xiàng)目為基包會(huì)導(dǎo)致feign與Hystrix集成失敗，從而導(dǎo)致服務(wù)熔斷功能失效
package com.lingerqi.microservicestudentconsumerfeign80;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.context.annotation.ComponentScan;
@ComponentScan(basePackages = {"com.lingerqi.microservicecommon","com.lingerqi.microservicestudentconsumerfeign80"})//掃描公共模塊
@EnableFeignClients(value = "com.lingerqi.*.*")
@EnableEurekaClient
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
public class MicroserviceStudentConsumerFeign80Application {
public static void main(String[] args) {
SpringApplication.run(MicroserviceStudentConsumerFeign80Application.class, args);
}
}
測(cè)試開(kāi)啟三個(gè)eureka，以及帶hystrix的provider，和帶feign,hystrix的consummer。
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集群后超時(shí)設(shè)置
這里因?yàn)檫€有一個(gè) feign 也有一個(gè)超時(shí)時(shí)間的設(shè)置，當(dāng)然feign底層是 ribbon的封裝，所以 直接配置ribbon，ribbon默認(rèn)超時(shí)也是1秒。
所以這里都是強(qiáng)制要求，ribbon的超時(shí)時(shí)間要大于hystrix的超時(shí)時(shí)間，否則 hystrix自定義的超時(shí)時(shí)間毫無(wú)意義。
所以還得microservice-student-consumer-feign-80上加個(gè) ribbon超時(shí)時(shí)間設(shè)置
ribbon:
ReadTimeout: 10000
ConnectTimeout: 9000
這樣就完工了
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