Springで自前でDataSource欲しいとき

AppConfig.java

@Configuration
public class DatabaseConfig {

    @Bean
    public DataSource ds1() {
        org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
        ds.setDriverClassName("driverName");
        ds.setUrl("url");
        ds.setUsername("username");
        ds.setPassword("password");
        ds.setDefaultAutoCommit(false);
        return ds;
    }

    @Bean
    public DataSource ds2() {
        org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
        ds.setDriverClassName("driverName");
        ds.setUrl("url");
        ds.setUsername("username");
        ds.setPassword("password");
        ds.setDefaultAutoCommit(false);
        return ds;
    }

    @Bean
    @DependsOn({"ds1", "ds2"})
    public DataSource routingDataSource() {
        AbstractRoutingDataSource routingDataSource = ・・・

        Map<Object, Object> ds = new HashMap<>();
        ds.put("a", ds1());
        ds.put("b", ds2());

        routingDataSource.setTargetDataSources(ds);
        return routingDataSource;
    }

    @Bean
    @Primary
    @DependsOn({"routingDataSource"})
    public DataSource dataSource() {
        return new TransactionAwareDataSourceProxy(routingDataSource());
    }

}