Manual property configuration with Spring Boot

Config.java

@Configuration
class Config {

    @Bean(name = "myDataSource")
    DataSource myDataSource(DataSourceProperties dataSourceProperties, ConfigurableEnvironment environment) {      
        MutablePropertySources propertySources = environment.getPropertySources();
        Binder binder = new Binder(ConfigurationPropertySources.from(propertySources));
        HikariDataSource dataSource = dataSourceProperties.initializeDataSourceBuilder().type(HikariDataSource.class).build();
        BindResult<HikariDataSource> result = binder.bind("my.spring.datasource.hikari", Bindable.ofInstance(dataSource));
        return result.get();
    }
}