Custom Hikari Datasource in Spring Boot

when i using default Spring Boot datasource that create by DataSourceAutoConfiguration hikari pool is correct and max size is ok but i want  create custom datasource to set that @primary .

there are some way to create custom Datasource, one of that is

@Bean

@ConfigurationProperties(prefix = "spring.datasource")

publicDataSourcedataSource() {

    return DataSourceBuilder.create().build();

}

datasource:

        jdbc-url: jdbc:mysql://localhost:3306/ihs?useUnicode=yes&characterEncoding=utf8&useSSL=false

        username:root

        password:pass

        hikari:

          maximum-pool-size:50

when create datasource by this way max pool size is not set ,after google, i fount that DataSourceBuilder dose not set Hikari prop 

2017-08-14 22:51:22.844 DEBUG 31814 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Pool stats (total=10, active=0, idle=50, waiting=0)

Another way for create custom datasource is like this :

 @Bean

@Primary

@ConfigurationProperties("spring.datasource.hikari")

publicDataSourcePropertiesdataSourceProperties() {

    returnnewDataSourceProperties();

}

 

@Bean

@Primary

@ConfigurationProperties("spring.datasource.hikari")

publicDataSourcedataSource() {

    returndataSourceProperties().initializeDataSourceBuilder().build();

}

2017-08-14 22:51:22.844 DEBUG 31814 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Pool stats (total=50, active=0, idle=50, waiting=0)