Single Spring boot for multiple RDBMS databases - database

Question

I have a requirement that I need to connect a small API to an Oracle DB for few GET ops. Now in dev since there is only 1 instance, it's quite easy to provide. But when it comes to production, the DBs are located in 5 different countries and hence are 5 different instances (All of them are exactly the same except for the data). My idea is to run them via application.properties with active profile and then connect them to application-{active-profile}.properties. Something like below:
application.properties:
spring.profiles.active=DB1
spring.application.name=demo
application-DB1.properties:
spring.jpa.hibernate.ddl-auto=none
spring.datasource.url=jdbc:oracle:thin:#//host1:port/SID
spring.datasource.username=username
spring.datasource.password=password
Configuration class:
#Configuration
#ConfigurationProperties("spring.datasource")
public class DBConfiguration {
private String url;
private String username;
private String password;
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
#Profile("dev")
#Bean
public String devDBConnection(){
System.out.println("URL:"+getUrl());
System.out.println("username:"+getUsername());
System.out.println("password:"+getPassword());
return "DEV DB connection";
}
#Profile("uat")
#Bean
public String uatDBConnection() {
System.out.println("URL:" + getUrl());
System.out.println("username:" + getUsername());
System.out.println("password:" + getPassword());
return "UAT DB connection";
}
}
So when I have to enable the API for another DB, say DB-3 , all I have to do is change the active.profile=DB3 and create a new file application-DB3.properties.
Does this seem a standard practice or is there an way to do this more efficiently ?

Answer 1

A good practice is to pass such configuration as environment variables or system properties.
So you don't need to change the code/configuration when these variables change.