How to implement Generic slick dao with oauth2 in scala - scala

Question

To work with OAuth2, Slick, Akka-HTTP in scala, I'm using the code from cdiniz https://github.com/cdiniz/slick-akka-http-oauth2.
I tried to create a DAO: UserDao and respective API: UserApi to fetch all records(in JSON) from database after successful verification of OAuth2.
BaseDao Code:
trait BaseDao[T,A] {
...
def getAll(): Future[Seq[A]]
}
class BaseDaoImpl[T <: BaseTable[A], A <: BaseEntity]()(implicit val tableQ: TableQuery[T], implicit val db: JdbcProfile#Backend#Database,implicit val profile: JdbcProfile) extends BaseDao[T,A] with Profile with DbModule {
import profile.api._
...
override def getAll(): Future[Seq[A]] = {
db.run(tableQ.result)
}
}
UserDao Code:
object UserService {
val modules = new ConfigurationServiceImpl with ActorServiceImpl with PersistenceServiceImpl
import modules._
class UserDao extends BaseDaoImpl[UserTable,UserEntity1] {}
}
UserApi Code:
//using io.circe for json encoder
class UserApi(val modules: Configuration with PersistenceService, val db: DatabaseService)(implicit executionContext: ExecutionContext) extends BaseApi {
override val oauth2DataHandler = modules.oauth2DataHandler
val userService = new UserDao
val testApi = pathPrefix("auth") {
path("users") {
pathEndOrSingleSlash {
get {
authenticateOAuth2Async[AuthInfo[OauthAccount]]("realm", oauth2Authenticator) {
auth => complete(userService.getAll().map(_.asJson))
}
}
}
}
}
}
Supporting Codes:
trait Profile {
val profile: JdbcProfile
}
trait DbModule extends Profile{
val db: JdbcProfile#Backend#Database
}
trait PersistenceService {
val accountsDao: AccountsDao
val oAuthAuthorizationCodesDao: OAuthAuthorizationCodesDao
val oauthClientsDao: OAuthClientsDao
val oauthAccessTokensDao: OAuthAccessTokensDao
val oauth2DataHandler : DataHandler[OauthAccount]
}
trait PersistenceServiceImpl extends PersistenceService with DbModule{
this: Configuration =>
private val dbConfig : DatabaseConfig[JdbcProfile] = DatabaseConfig.forConfig[JdbcProfile]("mysqldb")
override implicit val profile: JdbcProfile = dbConfig.driver
override implicit val db: JdbcProfile#Backend#Database = dbConfig.db
override val accountsDao = new AccountsDaoImpl
override val oAuthAuthorizationCodesDao = new OAuthAuthorizationCodesDaoImpl
override val oauthClientsDao = new OAuthClientsDaoImpl(this)
override val oauthAccessTokensDao = new OAuthAccessTokensDaoImpl(this)
override val oauth2DataHandler = new OAuth2DataHandler(this)
}
Here, The code runs without any issue but doesn't get any records as the response though there are records.
What is the problem in this code that I cannot look into? Any suggestion would be appreciable.