Spring Cloud tutorial series seven: Message Bus Spring Cloud Bus (F version)

Introduction

We Spring Cloud tutorial series six: Distributed Configuration Center Spring Cloud Config (F version) mentioned in the client wants to get the latest configuration requires access / actuator / refresh, although we can simplify this process by webhook, but when customers more and more end time, this solution is not very suitable, we can use Spring Cloud Bus to solve this problem

github address: https: //github.com/erlieStar/spring-cloud-learning

Realization of multi-client configuration updates

复制consumer-config-cluster（spring-cloud-config ）为consumer-config-cluster-bus（spring-cloud-bus）

1. The following items arranged
pom.xml

<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-config</artifactId>
</dependency>

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

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

bootstrap.yaml

server:
  port: 6001

spring:
  application:
    name: javashitang # 要获取的配置的应用名
  cloud:
    config:
      profile: dev
      label: master
      discovery:
        enabled: true
        service-id: config-cluster
    bus:
      enabled: true
      trace:
        enabled: true
  rabbitmq:
    host: myhost
    port: 5672
    username: guest
    password: guest

eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka

management:
  endpoints:
    web:
      exposure:
        include: bus-refresh

2. Start classes are as follows

@RefreshScope
@RestController
@EnableEurekaClient
@SpringBootApplication
public class ConsumerConfigClusterBus {

    public static void main(String[] args) {
        SpringApplication.run(ConsumerConfigClusterBus.class);
    }

    @Value("${from}")
    private String from;

    @RequestMapping("from")
    public String from() {
        return this.from;
    }
}

rabbitmq installation and knowledge read my blog, is no longer introduced

Start-Service-sequentially Eureka (Eureka-Spring-Cloud)
config-Cluster (Spring-Cloud-config)
start two consumer-config-cluster-bus ( spring-cloud-bus)

Method to start two instances of the idea, referring to Spring Cloud Tutorial Series II: The client load balancing Spring Cloud Ribbon (F version)

Access
HTTP: // localhost: 6001 / from
HTTP: // localhost: 6002 / from
returns as follows