Make Spring Data automatic DataSource dependent on Bean

Question

I have a Bean that fetches database credentials from an external source, and sets them as system properties. I want to ensure the DataSource automatically configured by Spring Data depends on my Bean, so I can ensure that the credentials have been fetched and set before the DataSource Bean is created.

Is there a way to do this without implementing a DataSource bean myself with the DependsOn annotation?

Answer 1

It may be potential solution for your reference , you can make use of spring @Configuration and @AutoConfigureBefore the code snippet like following

@AutoConfiguration(before = { DataSourceAutoConfiguration.class, SqlInitializationAutoConfiguration.class }) 
// above is AutoConfiguration is dataSource Autowired , such as mysql oracle ,and some else
public class CustomDataSourceAutoConfiguration {

    @Bean
     public CustomCredentials customCredentials(){
         // get your external source credentials
     }

}

for more annotation, you can read the spring source code , tht package path is org.springframework.boot.autoconfigure.condition