liquibase.user=abc
liquibase.password=xyz
liquibase.url=jdbc:postgresql://something.eu-west-1.rds.amazonaws.com:5432/app?ApplicationName=${appName}-liquibase
liquibase.enabled=true
liquibase.contexts=dev,postgres

@Configuration
public class LiquibaseDataSourceConfiguration {

    private static final Logger LOG = LoggerFactory.getLogger(LiquibaseDataSourceConfiguration.class);

    @Autowired
    private LiquibaseDataSourceProperties liquibaseDataSourceProperties;

    @LiquibaseDataSource
    @Bean
    public DataSource liquibaseDataSource() {
        DataSource ds =  DataSourceBuilder.create()
                .username(liquibaseDataSourceProperties.getUser())
                .password(liquibaseDataSourceProperties.getPassword())
                .url(liquibaseDataSourceProperties.getUrl())
                .driverClassName(liquibaseDataSourceProperties.getDriver())
                .build();
        if (ds instanceof org.apache.tomcat.jdbc.pool.DataSource) {
            ((org.apache.tomcat.jdbc.pool.DataSource) ds).setInitialSize(1);
            ((org.apache.tomcat.jdbc.pool.DataSource) ds).setMaxActive(2);
            ((org.apache.tomcat.jdbc.pool.DataSource) ds).setMaxAge(1000);
            ((org.apache.tomcat.jdbc.pool.DataSource) ds).setMinIdle(0);
            ((org.apache.tomcat.jdbc.pool.DataSource) ds).setMinEvictableIdleTimeMillis(60000);
        } else {
            // warnings or exceptions, whatever you prefer
        }

        LOG.info("Initialized a datasource for {}", liquibaseDataSourceProperties.getUrl());
        return ds;
    }

}