Spring Cloud-Bus(十二)
2024-10-01 08:02:26
说明
用于分布式上所有微服务都连接到消息总线上面。进行统一的通知
Config动态刷新
configClient
configClient通过/actuator/bus-refresh端点通知消息总线 消息总线通知线上的所有服务实例 调用/actuator/refresh端点进行配置更新
configClient改造
1.增加bus pom依赖
<!--根据消息总线实现所有服务配置刷新-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
2.配置文件增加mq信息
spring:
rabbitmq: #更多mq配置看书331页
username: liqiang
password: liqiang
host: localhost
port: 5672
3.配置文件增加bus端点
management:
endpoints:
web:
exposure:
include: refresh,bus-refresh
4.完整配置文件
spring:
application:
name: config #对应{application}
cloud:
config:
profile: dev #映射{profile}
label: master #映射{label}
#uri: http://127.0.0.1:7001 #config server地址
username: liqiang #configserver身份认证用户名
password: liqiang #configserver身份认证密码
discovery:
service-id: CONFIG-SERVER #configserver的服务名
enabled: true #开启通过服务访问configserver的功能
fail-fast: true #快速响应spring.cloud.config.fail-fast=true
retry:
multiplier: 1.1 #默认间隔乘数 如果间隔是1000 下一次间隔是1100
max-interval: 2000 #默认最大间隔数(毫秒)
max-attempts: 6 #默认重试次数
initial-interval: 1000 #默认间隔数
rabbitmq: #更多mq配置看书331页
username: liqiang
password: liqiang
host: localhost
port: 5672
server:
port: 7002
eureka:
instance:
hostname: localhost #当前实例的主机名字
client:
serviceUrl:
defaultZone: http://peer1:1111/eureka/, http://peer2:1112/eureka/
#http://127.0.0.1:7002/actuator/refresh
management:
endpoints:
web:
exposure:
include: refresh,bus-refresh
5.复制2个配置文件 分别命名为peer1和peer2并且将端口改为不一致
6.将client instail打包
8.执行eurekaserver config-server 通过命令启动2个client
java -jar /Users/liqiang/Desktop/java开发环境/mavenRegitstory/com/liqiang/spring-cloud-config-client/0.0.1-SNAPSHOT/spring-cloud-config-client-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1
java -jar /Users/liqiang/Desktop/java开发环境/mavenRegitstory/com/liqiang/spring-cloud-config-client/0.0.1-SNAPSHOT/spring-cloud-config-client-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2
9.测试
post请求http://127.0.0.1:7003/actuator/bus-refresh 测试没通过 只有7003实现了刷新
PS:最终测试时版本文本 不确定是版本差异还是bug 修改版本 重新测试
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<!--<version>2.1.0.RELEASE</version>-->
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<!--<spring-cloud.version>Greenwich.M3</spring-cloud.version>-->
<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
</properties>
10.修改git 77777为88888
posman访问http://localhost:7002/actuator/bus-refresh
可以看到总线上的7003服务 也刷新了
configServer
我们可以发现 通知总线上所有实例刷新配置由configServer来负责会更合理
1.configServer增加pom依赖
<!--根据消息总线实现所有服务配置刷新-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
2.配置文件增加mq以及端点
spring:
rabbitmq: #更多mq配置看书331页
username: liqiang
password: liqiang
host: localhost
port: 5672
management:
endpoints:
web:
exposure:
include: health,info,bus-refresh
3.刷新配置改为访问server的/actuator/bus-refresh 就可以了
指定服务刷新
http://localhost:7001/actuator/bus-refresh?destination=CONFIG:7002 为服务名字为config同时端口为7002的刷新
ps:没测试通过应该改为
http://localhost:7001/actuator/bus-refresh/config:7002 刷新名为config 同时端口为7002的服务
http://localhost:7001/actuator/bus-refresh/config:** 为刷新名为config的所有服务
事件跟踪
1.设置spring.cloud.bus.trace.enabled=true
2开启端点httptrace
management:
endpoints:
web:
exposure:
include: health,info,bus-refresh,httptrace,trace
3.访问http://localhost:7001/actuator/bus-refresh
4.再访问http://127.0.0.1:7001/actuator/httptrace
5.跟老版本的/trace地址不一样输出内容也不一样感觉不利于分析
{
"traces": [{
"timestamp": "2019-01-23T00:51:47.346Z",
"principal": null,
"session": null,
"request": {
"method": "POST",
"uri": "http://localhost:7001/actuator/bus-refresh",
"headers": {
"content-type": ["application/json"],
"cache-control": ["no-cache"],
"postman-token": ["bfe920e9-66fb-42bf-b36f-13d577b9fab7"],
"user-agent": ["PostmanRuntime/7.4.0"],
"accept": ["*/*"],
"host": ["localhost:7001"],
"accept-encoding": ["gzip, deflate"],
"content-length": ["0"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 204,
"headers": {}
},
"timeTaken": 3296
}, {
"timestamp": "2019-01-23T00:51:49.725Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://localhost:7001/config/dev/master",
"headers": {
"accept": ["application/xml, text/xml, application/json, application/*+xml, application/*+json"],
"user-agent": ["Java/1.8.0_181"],
"host": ["localhost:7001"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/xml;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:51:49 GMT"]
}
},
"timeTaken": 58
}, {
"timestamp": "2019-01-23T00:51:49.621Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://localhost:7001/config/dev/master",
"headers": {
"accept": ["application/xml, text/xml, application/json, application/*+xml, application/*+json"],
"user-agent": ["Java/1.8.0_181"],
"host": ["localhost:7001"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/xml;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:51:49 GMT"]
}
},
"timeTaken": 104
}, {
"timestamp": "2019-01-23T00:49:59.062Z",
"principal": null,
"session": null,
"request": {
"method": "POST",
"uri": "http://localhost:7001/actuator/bus-refresh",
"headers": {
"content-type": ["application/json"],
"cache-control": ["no-cache"],
"postman-token": ["470bc387-8f9b-4ddd-8655-66de72970a84"],
"user-agent": ["PostmanRuntime/7.4.0"],
"accept": ["*/*"],
"host": ["localhost:7001"],
"accept-encoding": ["gzip, deflate"],
"content-length": ["0"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 204,
"headers": {}
},
"timeTaken": 3517
}, {
"timestamp": "2019-01-23T00:50:02.173Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://127.0.0.1:7001/actuator/httptrace",
"headers": {
"host": ["127.0.0.1:7001"],
"connection": ["keep-alive"],
"cache-control": ["max-age=0"],
"upgrade-insecure-requests": ["1"],
"user-agent": ["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 OPR/57.0.3098.116"],
"accept": ["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],
"accept-encoding": ["gzip, deflate, br"],
"accept-language": ["zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7"],
"cookie": ["JSESSIONID=6369DFBED3CE1C799C4FC36E246CE502; CURRENT_COOKIE=84822DAAAAE4F96E04CBDE51132D0CCE"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/vnd.spring-boot.actuator.v2+json;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:50:01 GMT"]
}
},
"timeTaken": 4
}, {
"timestamp": "2019-01-23T00:50:01.319Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://localhost:7001/config/dev/master",
"headers": {
"accept": ["application/xml, text/xml, application/json, application/*+xml, application/*+json"],
"user-agent": ["Java/1.8.0_181"],
"host": ["localhost:7001"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/xml;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:50:01 GMT"]
}
},
"timeTaken": 39
}, {
"timestamp": "2019-01-23T00:50:01.125Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://localhost:7001/config/dev/master",
"headers": {
"accept": ["application/xml, text/xml, application/json, application/*+xml, application/*+json"],
"user-agent": ["Java/1.8.0_181"],
"host": ["localhost:7001"],
"connection": ["keep-alive"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/xml;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:50:01 GMT"]
}
},
"timeTaken": 86
}, {
"timestamp": "2019-01-23T00:49:53.411Z",
"principal": null,
"session": null,
"request": {
"method": "GET",
"uri": "http://127.0.0.1:7001/actuator/httptrace",
"headers": {
"host": ["127.0.0.1:7001"],
"connection": ["keep-alive"],
"cache-control": ["max-age=0"],
"upgrade-insecure-requests": ["1"],
"user-agent": ["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 OPR/57.0.3098.116"],
"accept": ["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],
"accept-encoding": ["gzip, deflate, br"],
"accept-language": ["zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7"],
"cookie": ["JSESSIONID=6369DFBED3CE1C799C4FC36E246CE502; CURRENT_COOKIE=84822DAAAAE4F96E04CBDE51132D0CCE"]
},
"remoteAddress": null
},
"response": {
"status": 200,
"headers": {
"Content-Type": ["application/vnd.spring-boot.actuator.v2+json;charset=UTF-8"],
"Transfer-Encoding": ["chunked"],
"Date": ["Wed, 23 Jan 2019 00:49:53 GMT"]
}
},
"timeTaken": 52
}]
}
源码分析
事件跟踪跟书上不一样 所以暂时止步
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