如何使Spring Boot使用MultiTenantSpringLiquibase？

Question

In my Spring Boot application, I want Liquibase to create tables on a PostgreSQL database, so in my configuration classes, I have set up a Bean that returns a MultiTenantSpringLiquibase containing schema names that it should use.

The problem is that this Bean is created but ignored, Spring Boot finds a valid SpringLiquibase Bean in LiquibaseAutoConfiguration, and uses it on my DB, accessing the same changelog that I intended for MultiTenantSpringLiquibase. This fails because this configuration tries to use the schema "public", which does not exist. If it does exist, it creates the tables I've defined in my changelog, but I don't want them to appear in the "public" schema.

How do I prevent LiquibaseAutoConfiguration or SpringLiquibase from executing, so that my MultiTenantSpringLiquibase Bean is used instead ?

Answer 1

In your application.properties, add this.

spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration 

or in your Main class use this.

@SpringBootApplication(exclude={LiquibaseAutoConfiguration.class})

Answer 2

You should have at least the SpringLiquibase bean for the default schema. In this case, you can skip the execution for this bean, but need to declare it.

@Bean
public SpringLiquibase liquibase(@Qualifier("taskExecutor") TaskExecutor taskExecutor,
                                     DataSource dataSource, LiquibaseProperties liquibaseProperties) {
     SpringLiquibase liquibase = new AsyncSpringLiquibase(taskExecutor, env);
     liquibase.setDataSource(dataSource);
     liquibase.setChangeLog("path-to-xml");
     liquibase.setContexts(liquibaseProperties.getContexts());
     liquibase.setDefaultSchema(liquibaseProperties.getDefaultSchema());
    return liquibase;
}

After this configuration, you should be able to create the MultiTenantSpringLiquibase Bean to run in all schemas:

@Bean
@DependsOn("liquibase") // ensure execution after SpringLiquibase Bean
public MultiTenantSpringLiquibase liquibaseMt(DataSource dataSource, LiquibaseProperties liquibaseProperties) {

    MultiTenantSpringLiquibase liquibase = new MultiTenantSpringLiquibase();

    liquibase.setDataSource(dataSource);
    liquibase.setChangeLog("path-to-xml");
    liquibase.setDefaultSchema(YOUR_DEFAULT_SCHEMA);
    liquibase.setSchemas(YOUR_ARRAY_OF_SCHEMAS);
    return liquibase;
}

After the execution of the SpringLiquibase , MultiTenantSpringLiquibase will be called and executed in your schemas by the line liquibase.setSchemas(...)

This sample is a working sample that I've used recently.

Full example class here .

Answer 3

Did you try adding this to your application.properties file:

#Disable Liquibase
spring.liquibase.enabled=false

If you don't disable it I believe this gets executed:

https://github.com/spring-projects/spring-boot/blob/master/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfiguration.java#L74

It's just an idea, I'm not sure but you can try since you have the environment and I can only speculate.