Custom DataSource Spring boot - spring

Question

spring works well when we use the default datasource and ways we can use in-build spring jpa.
So currently what we do is the following
specify the config for DB in the application.properties
myapp.datasource.url=jdbc:mysql:thin:#localhost:1521:myschema
myapp.datasource.username=user
myapp.datasource.password=password
myapp.datasource.driver-class=com.mysql.cj.jdbc.Driver
Custom datasource
#ConfigurationProperties(prefix = "myapp.datasource")
#Bean
public DataSource mySqlDataSource()
{
return DataSourceBuilder.create().build();
}
We have the same application running for multiple clients. Problem is each client has their own DB schema.
So, the problem now is that we need to be able to serve each client but in order to do this, we need to create multiple datasources
for instance:
#ConfigurationProperties(prefix = "myapp.partner1.datasource")
#Bean
public DataSource mySqlDataSourcePartner1()
{
return DataSourceBuilder.create().build();
}
#ConfigurationProperties(prefix = "myapp.partner2.datasource")
#Bean
public DataSource mySqlDataSourcePartner2()
{
return DataSourceBuilder.create().build();
}
#ConfigurationProperties(prefix = "myapp.partner3.datasource")
#Bean
public DataSource mySqlDataSourcePartner3()
{
return DataSourceBuilder.create().build();
}
and so on...
Is there a generic and more efficient way of doing this? where if in future when a new partner is added we can just specify the config in application properties and get that working?

Answer 1

You can use Spring Boot Multi-tenancy model using a separate database for each client. You can save the database configuration in config-properties or database then depending upon the ClientId you can you the Datasource. You need to add Interceptor to intercept the Request and identify the tenant. Please refer to the below example
https://tech.asimio.net/2017/01/17/Multitenant-applications-using-Spring-Boot-JPA-Hibernate-and-Postgres.html
please check
https://github.com/sumanentc/multitenant