除了使用 git 作为配置文件的管理中心外,也可以使用关系型数据库、非关系型数据库实现配置中心,以及配置中心的扩展。包括:客户端自动刷新、客户端回退、安全认证、客户端高可用、服务端高可用等。
服务端 git 配置详解
git 的版 config 有多种配置:
- uri 占位符
- 模式匹配
- 多残酷
- 路径搜索占位符
源码:https://gitee.com/laiyy0728/spring-cloud/tree/master/spring-cloud-config/spring-cloud-placeholder
公共依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
git 中 uri 占位符
Spring Cloud Config Server 支持占位符的使用,支持 {application}、{profile}、{label},这样的话就可以在配置 uri 的时候,通过占位符使用应用名称来区分应用对应的仓库进行使用。
*** config server ***
spring:
cloud:
config:
server:
git:
uri: https://gitee.com/laiyy0728/{application} # {application} 是匹配符,匹配项目名称
search-paths: config-simple
application:
name: spring-cloud-placeholder-server
server:
port: 9090
*** config client ***
bootstrap.yml
spring:
cloud:
config:
label: master
uri: http://localhost:9090
name: config-repo
profile: dev
使用 {application}
时,需要注意,在 config client 中配置的 name
,既是 config 管理中心的 git 名称,又是需要匹配的配置文件名称。即:远程的 config git 管理中心地址为:https://gitee.com/laiyy0728/config-repo ,在仓库中 config-simple
文件夹下,必须有一个 config-simple.yml
配置文件。否则 config client 会找不到配置文件。
模式匹配、多存储库
config server
spring:
profiles:
active: native # 本地配置仓库,在测试本地配置仓库之前,需要注释掉这一行
cloud:
config:
server:
git:
uri: https://gitee.com/laiyy0728/config-repo
search-paths: config-simple
repos:
simple: https://gitee.com/laiyy0728/simple
special:
pattern: special*/dev*,*special*/dev*
uri: https://gitee.com/laiyy0728/special
native:
search-locations: C:/Users/laiyy/AppData/Local/Temp/config-simple # 本地配置仓库路径
application:
name: spring-cloud-placeholder-server
server:
port: 9090
路径搜索占位符
spring:
cloud:
config:
server:
git:
uri: https://gitee.com/laiyy0728/config-repo
search-paths: config-* # 匹配以 config 开头的文件夹
application:
name: spring-cloud-placeholder-server
server:
port: 9090
关系型数据库实现配置中心
架构图:
公共依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
mysql config server
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
server:
port: 9090
spring:
application:
name: spring-cloud-customer-repo-mysql
cloud:
config:
server:
jdbc:
sql: SELECT `KEY`, `VALUE` FROM PROPERTIES WHERE application = ? NAD profile = ? AND label = ?
label: master
profiles:
active: jdbc
datasource:
url: jdbc:mysql:///springcloud?useUnicode=true&charsetEncoding=UTF-8
username: root
password: 123456
driver-class-name: com.mysql.cj.jdbc.Driver
logging:
level:
org.springframework.jdbc.core: debug
org.springframework.jdbc.core.StatementCreatorUtils: Trace
其余配置、config client 与之前一致即可。
验证
启动 config server、config client,可以看到,config server 打印日志如下:
...
Executing prepared SQL query
Executing prepared SQL statement [SELECT `KEY`, `VALUE` FROM PROPERTIES WHERE application = ? AND profile = ? AND lable = ?]
Setting SQL statement parameter value: column index 1, parameter value [config-simple], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 2, parameter value [dev], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 3, parameter value [master], value class [java.lang.String], SQL type unknown
Executing prepared SQL query
Executing prepared SQL statement [SELECT `KEY`, `VALUE` FROM PROPERTIES WHERE application = ? AND profile = ? AND lable = ?]
Setting SQL statement parameter value: column index 1, parameter value [config-simple], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 2, parameter value [default], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 3, parameter value [master], value class [java.lang.String], SQL type unknown
Executing prepared SQL query
Executing prepared SQL statement [SELECT `KEY`, `VALUE` FROM PROPERTIES WHERE application = ? AND profile = ? AND lable = ?]
Setting SQL statement parameter value: column index 1, parameter value [application], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 2, parameter value [dev], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 3, parameter value [master], value class [java.lang.String], SQL type unknown
Executing prepared SQL query
Executing prepared SQL statement [SELECT `KEY`, `VALUE` FROM PROPERTIES WHERE application = ? AND profile = ? AND lable = ?]
Setting SQL statement parameter value: column index 1, parameter value [application], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 2, parameter value [default], value class [java.lang.String], SQL type unknown
Setting SQL statement parameter value: column index 3, parameter value [master], value class [java.lang.String], SQL type unknown
...
访问 http://localhost:9091/get-config-info ,返回数据如下:
非关系数据库实现配置中心
以 mongodb 为例,需要 spring cloud config server mongodb 依赖,github 地址:https://github.com/spring-cloud-incubator/spring-cloud-config-server-mongodb
config server monngodb
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
<!-- mongogdb 在 spring cloud config server 的依赖,这个依赖是快照依赖,需要指定 spring 的仓库 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server-mongodb</artifactId>
<version>0.0.3.BUILD-SNAPSHOT</version>
</dependency>
</dependencies>
server:
port: 9090
spring:
application:
name: spring-cloud-customer-repo-mongodb
data:
mongodb:
uri: mongodb://192.168.67.133/springcloud # mongo 数据库地址
@SpringBootApplication
@EnableMongoConfigServer // 一定注意,不能写为 EnableConfigServer,一定要是 MongooConfigServer
public class SpringCloudCustomerRepoMongodbApplication {
public static void main(String[] args) {
SpringApplication.run(SpringCloudCustomerRepoMongodbApplication.class, args);
}
}
mongo 测试数据
collection 名称:springcloud
数据:
{
"label": "master",
"profile": "prod",
"source": {
"com": {
"laiyy": {
"gitee": {
"config": "I am the mongdb configuration file from dev environment. I will edit."
}
}
}
}
}
config client
spring:
cloud:
config:
label: master
uri: http://localhost:9090
name: springcloud # 这里指定的是 collection name
profile: prod
验证
config client 与之前的一致
访问 http://localhost:9091/get-config-info ,返回值为: