Disable / remove spring boot datasource by profile - spring

Question

Using spring boot yaml config, I have a datasource that looks like this:
datasource:
url: jdbc:postgresql://somehost/somedb
username: username
password: password
hikari:
connection-timeout: 250
maximum-pool-size: 1
minimum-idle: 0
I can succesfully point to different DBs based on profile, but I'd like to setup a profile that does not use this datasource at all. When I use that profile, however, I get this:
***************************
APPLICATION FAILED TO START
***************************
Description:
Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified and no embedded datasource could be auto-configured.
Reason: Failed to determine a suitable driver class
How do I use this datasource in some profiles, but not in others?

Answer 1

You can skip the bean for specific profiles using `#Profile("!dev") annotation
profile names can also be prefixed with a NOT operator e.g. “!dev” to exclude them from a profile
from docs here
If a given profile is prefixed with the NOT operator (!), the annotated component will be registered if the profile is not active — for example, given #Profile({"p1", "!p2"}), registration will occur if profile 'p1' is active or if profile 'p2' is not active.
Profiles can also be configured in XML – the tag has “profiles” attribute which takes comma separated values of the applicable profiles:here
<beans profile="dev">
<bean id="devDatasourceConfig"
 class="org.baeldung.profiles.DevDatasourceConfig" />
</beans>

Answer 2

Change to:
spring:
datasource:
url: jdbc:postgresql://somehost/somedb
username: username
password: password
hikari:
connection-timeout: 250
maximum-pool-size: 1
minimum-idle: 0
Springboot works with Autoconfiguration by default, but you can customize excluding some AutoConfiguration classes
Edit your configuration to skip AutoConfiguration:
#EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})
Make your own datasource by profile
#Bean
#Profile("dev")
DataSource dataSourceDevProfile(org.springframework.core.env.Environment environment) throws Exception {
return DataSourceBuilder.create().url("").driverClassName("").password("").username("").build();
}
#Bean
#Profile("!dev")
DataSource dataSourceNoDev(org.springframework.core.env.Environment environment) throws Exception {
return DataSourceBuilder.create().url(environment.getProperty("spring.datasource.url")).driverClassName("").password(environment.getProperty("spring.datasource.password")).username(environment.getProperty("spring.datasource.username")).build();
}
Or Totally Programatically
#Bean
DataSource dataSource2(org.springframework.core.env.Environment environment) throws Exception {
if (environment.acceptsProfiles("dev")){
//return datasource dev
}else{
//return datasource prod
}