Spray IO with Slick Use Conf File

Question

I'm using Spray with Slick. Spray is actually very easy to use, and the same goes with Slick. However, the infamous Slick way to connect to Database is like:

  Database.forURL("jdbc:mysql://localhost:3306/SprayBlog?characterEncoding=UTF-8", user="xxxx", password="xxx", driver = "com.mysql.jdbc.Driver") withSession {
    implicit session =>

      (Article.articles.ddl ++ User.users.ddl).create
  }

I hate typing this much whenever I do a database connection. I have used Play-Slick framework before, and Play has this application.conf, with which I can store my database connection address, username and password. I don't know if this is true, but shouldn't people store their database info on an encrypted file, and I may be wrong but I feel conf is blocked from outside access and encrypted.

So is there a way for me to call database manipulations easier?? If I do want to put the info in the conf, how can I access it?

Answer 1

store your db in a val or write a def that abstracts over what you feel is repetitive. withSession is good for connection scoping. I don't know spray conf files, but they may use Typesafe config, which is a library that allows to read the file. Spray probably also exposes its config through an api.

Answer 2

With Slick 2.1.0 you can use Database.forConfig().

In application.conf:

db {
    url = "jdbc:mysql://localhost/DatabaseName"
    driver = "com.mysql.jdbc.Driver"
    user = "root"
    password = ""
}

In your database access code:

import scala.slick.driver.MySQLDriver.simple._
import models.Item
import tables.ItemTable

class ItemService {

  val items = TableQuery[ItemTable]

  def all: List[Item] = Database.forConfig("db") withSession { implicit session: Session =>
    items.list
  }
}