上一篇进行Netflix Zuul 1.0 与 gateway的对比。今天来介绍一下 zuul的搭建及应用
Zuul 工程创建
工程创建 cloud-gateway-zuul。还是基于之前的工程
pom文件导入
<parent>
<artifactId>spring-cloud-alibaba-basis</artifactId>
<groupId>com.xian.cloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-gateway-zuul</artifactId>
<name>网关服务zuul</name>
<dependencies>
<!-- 注册中心 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<!-- 配置中心 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-nacos-config</artifactId>
</dependency>
<!-- fengin 支持 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- zuul -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
</dependencies>
创建GatewayZuulApplication启动类
package com.xian.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.cloud.openfeign.EnableFeignClients;
/**
* <Description>
*
* @author xianliru@100tal.com
* @version 1.0
* @createDate 2019/10/29 10:52
*/
@EnableZuulProxy
@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class GatewayZuulApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayZuulApplication.class,args);
}
}
创建 bootstrap.yml
spring:
profiles:
active: dev
application:
name: gateway-zuul-server
cloud:
nacos:
config:
server-addr: 47.99.209.72:8848
file-extension: yaml
zuul:
host:
# 目标主机的最大连接数，默认值为200
max-total-connections: 1000
# 每个主机的初始连接数，默认值为20
max-per-route-connections: 200
routes:
discovery-server:
path: /server/**
serviceId: cloud-discovery-server
client-common:
path: /client/**
serviceId: cloud-discovery-client
sensitiveHeaders: X-ABC,Authorization
# 所有路由的默认Hystrix隔离模式（ExecutionIsolationStrategy）为SEMAPHORE。如果此隔离模式是首选，则zuul.ribbonIsolationStrategy可以更改为THREAD
ribbon-isolation-strategy: thread
# 这个属性意思，指定忽略的服务列表 * 代表忽略所有服务
ignored-services: '*'
# 字段比较敏感，不希望传递给下游微服务。 设置空没有要忽略的敏感字段。全部传给下游服务
sensitive-headers: X-ABC
ribbon:
eager-load:
# 强制加载，不设置会进行懒加载。spring 第一次请求会非常慢
enabled: true
```
#### 参数
- zuul.host.max-total-connections 目标主机的最大连接数。
- zuul.host.max-per-route-connections 每个主机的初始连接数。
这个俩个参数是zuul的优化后的属性值，如果想有适合的配置，还需要根据业务情况而定
因为我们有俩个业务服务 一个服务提供者 一个是服务消费者我们配置俩个服务的分别路由 discovery-server、client-common
- path 是请求路径匹配规则
- serviceId 是我们服务的spring.application.name 对应的值。
- sensitiveHeaders 字段比较敏感，不希望传递给下游微服务。 设置空没有要忽略的敏感字段。全部传给下游服务这个字段可以是全局设置也可以是单个服务配置。
- ribbon-isolation-strategy 所有路由的默认Hystrix隔离模式（ExecutionIsolationStrategy）为SEMAPHORE。如果此隔离模式是首选，则zuul.ribbonIsolationStrategy可以更改为THREAD
- ignored-services 忽略所有微服务，只路由指定的微服务。
- ribbon.eager-load.enabled true 强制加载 false 默认懒加载
- true日志打印效果 false 将不打印这段日志
```
2019-10-29 23:47:11.377 INFO 61396 --- [ main] c.netflix.loadbalancer.BaseLoadBalancer : Client: cloud-discovery-server instantiated a LoadBalancer: DynamicServerListLoadBalancer:{NFLoadBalancer:name=cloud-discovery-server,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:null
2019-10-29 23:47:11.382 INFO 61396 --- [ main] c.n.l.DynamicServerListLoadBalancer : Using serverListUpdater PollingServerListUpdater
2019-10-29 23:47:11.450 INFO 61396 --- [ main] c.netflix.config.ChainedDynamicProperty : Flipping property: cloud-discovery-server.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2019-10-29 23:47:11.452 INFO 61396 --- [ main] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client cloud-discovery-server initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=cloud-discovery-server,current list of Servers=[192.168.3.6:9012],Load balancer stats=Zone stats: {unknown=[Zone:unknown; Instance count:1; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:192.168.3.6:9012; Zone:UNKNOWN; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 08:00:00 CST 1970; First connection made: Thu Jan 01 08:00:00 CST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:com.alibaba.cloud.nacos.ribbon.NacosServerList@33e4b9c4
2019-10-29 23:47:11.576 INFO 61396 --- [ main] c.netflix.config.ChainedDynamicProperty : Flipping property: cloud-discovery-client.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2019-10-29 23:47:11.577 INFO 61396 --- [ main] c.netflix.loadbalancer.BaseLoadBalancer : Client: cloud-discovery-client instantiated a LoadBalancer: DynamicServerListLoadBalancer:{NFLoadBalancer:name=cloud-discovery-client,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:null
2019-10-29 23:47:11.578 INFO 61396 --- [ main] c.n.l.DynamicServerListLoadBalancer : Using serverListUpdater PollingServerListUpdater
2019-10-29 23:47:11.639 INFO 61396 --- [ main] c.netflix.config.ChainedDynamicProperty : Flipping property: cloud-discovery-client.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2019-10-29 23:47:11.640 INFO 61396 --- [ main] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client cloud-discovery-client initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=cloud-discovery-client,current list of Servers=[192.168.3.6:9011],Load balancer stats=Zone stats: {unknown=[Zone:unknown; Instance count:1; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:192.168.3.6:9011; Zone:UNKNOWN; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 08:00:00 CST 1970; First connection made: Thu Jan 01 08:00:00 CST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:com.alibaba.cloud.nacos.ribbon.NacosServerList@256589a1
```
将三个服务全部启动。服务提供者和服务消费者还有zuul 服务
在控制台 输入命令 curl http://localhost:9083/client/client/test
我们看到打印效果，请求通过网关服务成功转发到了我们的下游服务上。并返回
- ribbon-isolation-strategy
- ignored-services
- sensitiveHeaders
以上几个参数、还有zuul服务的路由拦截器的使用，将在下一篇讲解。
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