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koupleless

Koupleless 是一种模块化的 Serverless 技术解决方案。基础原理是拆分成了基座+模块的概念。支持模块化开发。 适用的场景：

• 应用合并部署
• 模块化开发
• 模块隔离
• 插件化
• 优化启动速度等
• 热启动部署

拆分原则

• 基座加载所需的所有基础依赖
• 模块只需要将依赖改成provider
• 如果模块依赖基座的bean例如数据源可以使用SpringBeanFinder.getBaseBean(DataSource.class)

maven 依赖

• 基座

<dependency>  <groupId>com.alipay.sofa.koupleless</groupId>  <artifactId>koupleless-base-starter</artifactId>  <version>${koupleless.runtime.version}</version>  
</dependency>-- 插件
<build>  <finalName>${project.artifactId}</finalName>  <plugins>  <plugin>  <groupId>com.alipay.sofa.koupleless</groupId>  <artifactId>koupleless-base-build-plugin</artifactId>  <version>${koupleless.runtime.version}</version>  <executions>  <execution>  <goals>  <goal>add-patch</goal>  </goals>  </execution>  </executions>  </plugin>  <plugin>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-maven-plugin</artifactId>  <executions>  <execution>  <goals>  <goal>repackage</goal>  </goals>  </execution>  </executions>  </plugin>  </plugins>  
</build>

• 模块

<dependency>  <groupId>com.alipay.sofa.koupleless</groupId>  <artifactId>koupleless-app-starter</artifactId>  <version>${koupleless.runtime.version}</version>  <scope>provided</scope>  
</dependency><build>  <finalName>${project.artifactId}</finalName>  <plugins>  <!--这里添加ark 打包插件-->  <plugin>  <groupId>com.alipay.sofa</groupId>  <artifactId>sofa-ark-maven-plugin</artifactId>  <version>${sofa.ark.version}</version>  <executions>  <execution>  <id>default-cli</id>  <goals>  <goal>repackage</goal>  </goals>  </execution>  </executions>  <configuration>  <skipArkExecutable>true</skipArkExecutable>  <outputDirectory>./target</outputDirectory>  <bizName>hh-bidding</bizName>  <webContextPath>bidding</webContextPath>  <declaredMode>true</declaredMode>  <packExcludesConfig>rules.txt</packExcludesConfig>  </configuration>  </plugin>  <plugin>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-maven-plugin</artifactId>  <executions>  <execution>  <goals>  <goal>repackage</goal>  </goals>  </execution>  </executions>  </plugin>  </plugins>  
</build>

注意事项

• 模块的生命周期
  模块销毁会销毁到模块的所有bean，这个时候需要注意如果引用的基座bean的话如 Datasource，可能会被销毁。所有可以，解决方法

package com.ruoyi.common.core.xss;  import javax.sql.DataSource;  
import java.io.PrintWriter;  
import java.sql.Connection;  
import java.sql.SQLException;  
import java.sql.SQLFeatureNotSupportedException;  
import java.util.logging.Logger;  /**  * @author wxl  */public class MyDataSource implements DataSource {  public DataSource dataSource;  public MyDataSource(DataSource dataSource) {  this.dataSource = dataSource;  }  @Override  public Connection getConnection() throws SQLException {  return dataSource.getConnection();  }  @Override  public Connection getConnection(String username, String password) throws SQLException {  return dataSource.getConnection(username, password);  }  @Override  public <T> T unwrap(Class<T> iface) throws SQLException {  return dataSource.unwrap(iface);  }  @Override  public boolean isWrapperFor(Class<?> iface) throws SQLException {  return dataSource.isWrapperFor(iface);  }  @Override  public PrintWriter getLogWriter() throws SQLException {  return dataSource.getLogWriter();  }  @Override  public void setLogWriter(PrintWriter out) throws SQLException {  }  @Override  public void setLoginTimeout(int seconds) throws SQLException {  dataSource.setLoginTimeout(seconds);  }  @Override  public int getLoginTimeout() throws SQLException {  return dataSource.getLoginTimeout();  }  @Override  public Logger getParentLogger() throws SQLFeatureNotSupportedException {  return dataSource.getParentLogger();  }  
}

• 声明新的ds

@Bean(name = "dataSource")  
@ConditionalOnMissingBean  
public DataSource dataSource() {  return new MyDataSource(SpringBeanFinder.getBaseBean(DataSource.class));  
}

spring cloud gateway 和web 应用合并问题

spring cloud gateway是webflux 和tomcat 部署到一起需要修改一些东西，基座需要引入

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

并配置

spring.main.web-application-type=servlet

• spring cloud gateway 应用

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})  
@EnableWebFlux  
@Import({GatewayAutoConfiguration.class})  
public class RuoYiGatewayApplication {  public static void main(String[] args) {  SpringApplication.run(RuoYiGatewayApplication.class, args);  }  
}

• EnableWebFlux 启用webflux
• @Import({GatewayAutoConfiguration.class}) 引入spring cloud gateway 配置