ctcarrier

import reactivemongo.bson.BSONDocument
import reactivemongo.api.collections.default.BSONCollection
import reactivemongo.api.{QueryOpts, DB}
import reactivemongo.core.commands.Count
import reactivemongo.api.collections.default._

def getDocument(collection: BSONCollection): Future[Option[YourClass]] = {
    val futureCount = db.command(Count(collection.name))
    futureCount.flatMap { count =>
      val skip = Random.nextInt(count)

ctcarrier

import com.excilys.ebi.gatling.core.Predef._
import com.excilys.ebi.gatling.http.Predef._
import scala.util.Random
import com.excilys.ebi.gatling.core.feeder.Feeder

class ServiceSimulation extends Simulation {

        def apply = {
                val random = new Random
                random.setSeed(System.currentTimeMillis)

ctcarrier

implicit def liftJsonUnmarshaller[A :Manifest] = new UnmarshallerBase[A] {
           val canUnmarshalFrom = ContentTypeRange(`application/json`) :: Nil
           def unmarshal(content: HttpContent) = protect {
                   val jsonSource = DefaultUnmarshallers.StringUnmarshaller.unmarshal(content).right.get
                   parse(jsonSource).extract[A]
           }
   }

   implicit def liftJsonMarshaller[A <: AnyRef] = new MarshallerBase[A] {
           val canMarshalTo = ContentType(`application/json`) :: Nil