Slick access to DataSource Programmatically - scala

Question

I have a object like this :
object DatabaseFactory {
import slick.jdbc.PostgresProfile.api._
private val db = Database.forConfig("database.postgresql")
def getDatabase = db
}
and a configuration like this :
database {
postgresql {
connectionPool = "HikariCP"
dataSourceClass = "org.postgresql.ds.PGSimpleDataSource"
properties = {
serverName = "localhost"
portNumber = "5432"
databaseName = "myProject"
user = "user"
password = "userPass"
}
numThreads = 10
}
}
There is any way to get javax.sql.DataSource from slick ?
I need a instance of PGSimpleDataSource from slick .
I want to use that on Flyway configuration :
Flyway.configure()
.baselineOnMigrate(true)
.locations("filesystem:/etc/myProject/db-scripts")
.dataSource(??? Need DataSource ???)

Answer 1

I've just stumbled upon this and seen the comment by https://stackoverflow.com/users/337134/knows-not-much .
Basically, you'll need to implement your own instance of Datasource:
package slick.migration.api.flyway
import java.io.PrintWriter
import java.sql.{DriverManager, SQLException, SQLFeatureNotSupportedException}
import slick.jdbc.JdbcBackend
import javax.sql.DataSource
class DatabaseDatasource(database: JdbcBackend#Database) extends DataSource {
override def getConnection = database.createSession().conn
override def getConnection(username: String, password: String) = throw new SQLFeatureNotSupportedException()
override def unwrap[T](iface: Class[T]) =
if (iface.isInstance(this)) this.asInstanceOf[T]
else throw new SQLException(getClass.getName + " is not a wrapper for " + iface)
override def isWrapperFor(iface: Class[_]) = iface.isInstance(this)
override def getLogWriter = throw new SQLFeatureNotSupportedException()
override def setLogWriter(out: PrintWriter): Unit = throw new SQLFeatureNotSupportedException()
override def setLoginTimeout(seconds: Int): Unit = DriverManager.setLoginTimeout(seconds)
override def getLoginTimeout = DriverManager.getLoginTimeout
override def getParentLogger = throw new SQLFeatureNotSupportedException()
}

Answer 2

There is any way to get javax.sql.DataSource from slick ?
I don't think so but I was able to get an instance of slick.jdbc.JdbcDataSource which I then used the exact same way i always used javax.sql.DataSource. creating connection, then preparedstatement, then handling a resultset. all the same.
db.source
I know this is old but wanted to give an option to try that isn't as drastic as the other answer of creating your own instance of datasource.