Spring Boot datasource 설정

spring boot에서 datasource bean을 자동으로 생성하는 위치

org.springframework.boot.autoconfigure.jdbc.DataSourceProperties

기본 datasource 자동 설정

@ConfigurationProperties(prefix = "spring.datasource")
public class DataSourceProperties implements BeanClassLoaderAware, InitializingBean {

	private ClassLoader classLoader;
    ......
}

spring boot hikari datasource bean을 자동으로 생성하는 위치

org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration

이 class 내에서 각 third party datasource를 자동 설정

   	/**
	 * Hikari DataSource configuration.
	 */
	@Configuration(proxyBeanMethods = false)
	@ConditionalOnClass(HikariDataSource.class)
	@ConditionalOnMissingBean(DataSource.class)
	@ConditionalOnProperty(name = "spring.datasource.type", havingValue = "com.zaxxer.hikari.HikariDataSource",
			matchIfMissing = true)
	static class Hikari {

		@Bean
		@ConfigurationProperties(prefix = "spring.datasource.hikari")
		HikariDataSource dataSource(DataSourceProperties properties) {
			HikariDataSource dataSource = createDataSource(properties, HikariDataSource.class);
			if (StringUtils.hasText(properties.getName())) {
				dataSource.setPoolName(properties.getName());
			}
			return dataSource;
		}

	}