zuul routing gateway

Zuul includes two main functions of request routing and filtering:

The routing function is responsible for forwarding the external request to the specific microservice instance, which is the basis of realizing the unified access to the external access, while the filter function is responsible for intervening the request processing process, which is the basis of realizing the request verification, service aggregation and other functions. Zuul and Eureka integrate, register zuul itself as an application under Eureka service governance, and obtain from Eureka at the same time The messages of other microservices, that is, the access to microservices in the future, are obtained through zuul jump.

Note: Zuul service will eventually register with Eureka
Provide three functions of = agent + routing + filtering

Official: https://github.com/Netflix/zuul/wiki/Getting-Started

Basic configuration

To create a new Module microservicecloud-zuul-gateway-9527:
Introduce dependency:

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zuul</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</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-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>pers.zhang</groupId>
            <artifactId>microservicecloud-api</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

application.yml

server:
  port: 9527

spring:
  application:
    name: microservicecloud-auul-gateway

eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka
  instance:
    instance-id: gateway-9527.com
    prefer-ip-address: true


info:
  app.name: zhang-microcloud
  company.name: pers.zhang
  build.artifactId: $project.artifactId$
  build.version: $project.version$

hosts modification:

127.0.0.1  myzuul.com

Main startup class:

@SpringBootApplication
@EnableZuulProxy
public class Zuul_9527_StartSpringCloudApp {

    public static void main(String[] args) {
        SpringApplication.run(Zuul_9527_StartSpringCloudApp.class, args);
    }
}

Test:

• Start three eureka clusters
• Start a service provider class microservicecloud-provider-dept-8001
• Startup routing

No routing:
http://localhost:8001/dept/get/2

Use routing:
http://myzuul.com:9527/microservicecloud-dept/dept/get/2

Route access mapping rules

Agent Name:

Modify the configuration of microservicecloud-zuul-gateway-9527:

zuul:
  routes: 
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

Route to OK: http://myzuul.com:9527/mydept/dept/get/1

Go to OK: http://myzul.com: 9527/microservicecloud-dept/dept/get/2

Original real service name ignored:

zuul:
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
  ignored-services: microservicecloud-dept # Ignore real service name

Route to OK: http://myzuul.com:9527/mydept/dept/get/1

Original path access not available: http://myzuul.com:9527/microservicecloud-dept/dept/get/2

Single specific, multiple can use "*":

zuul: 
	ignored-services: "*"
	routes: 
		mydept.serviceId: microservicecloud-dept
		mydept.path: /mydept/**

Set uniform public prefix:

zuul:
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
  ignored-services: "*" # Ignore real service name
  prefix: /test

Visit: http://myzul.com: 9527 / test / mydept / dept / get / 1