Exception when using elastic4s with elastic-search and spray-routing - scala

Question

I'm trying to write a little REST api using Scala, Spray.io, Elastic4s and ElasticSearch.
My ES instance is running with default parameters, I just changed the parameter network.host to 127.0.0.1.
Here is my spray routing definition
package com.example
import akka.actor.Actor
import spray.routing._
import com.example.core.control.CrudController
class ServiceActor extends Actor with Service {
def actorRefFactory = context
def receive = runRoute(routes)
}
trait Service extends HttpService {
val crudController = new CrudController()
val routes = {
path("ads" / IntNumber) {
id =>
get {
ctx =>
ctx.complete(
crudController.getFromElasticSearch
)
}
}
}
}
My crudController :
package com.example.core.control
import com.example._
import org.elasticsearch.action.search.SearchResponse
import scala.concurrent._
import scala.util.{Success, Failure}
import ExecutionContext.Implicits.global
class CrudController extends elastic4s
{
def getFromElasticSearch : String = {
val something: Future[SearchResponse] = get
something onComplete {
case Success(p) => println(p)
case Failure(t) => println("An error has occured: " + t)
}
"GET received \n"
}
}
And a trait elastic4s who is encapsulating the call to elastic4s
package com.example
import com.sksamuel.elastic4s.ElasticClient
import com.sksamuel.elastic4s.ElasticDsl._
import scala.concurrent._
import org.elasticsearch.action.search.SearchResponse
trait elastic4s {
def get: Future[SearchResponse] = {
val client = ElasticClient.remote("127.0.0.1", 9300)
client execute { search in "ads"->"categories" }
}
}
This code runs well, and gives me this output :
[INFO] [03/26/2014 11:41:50.957] [on-spray-can-akka.actor.default-dispatcher-4] [akka://on-spray-can/user/IO-HTTP/listener-0] Bound to localhost/127.0.0.1:8080
But when a try to access to the route "localhost/ads/8" with my browser, the case Failure is always triggered and I got this error output on my intellij console :
An error has occured: org.elasticsearch.transport.RemoteTransportException: [Skinhead][inet[/127.0.0.1:9300]][search]
(No console output with elasticSearch running on my terminal)
Is this exception related to ElasticSearch, or am I doing wrong with my Future declaration ?

Answer 1

I suppose you should use ElasticClient.local in this case, as specified in elastic4s docs:
https://github.com/sksamuel/elastic4s
To specify settings for the local node you can pass in a settings object like this:
val settings = ImmutableSettings.settingsBuilder()
.put("http.enabled", false)
.put("path.home", "/var/elastic/")
val client = ElasticClient.local(settings.build)