I am currently trying to mock a livy server from scala to run unit tests.
Basically, I would like to test submitting jar to a livy client. I'm trying to adapt the code I found here (livy)HttpClientSpec.scala and I'm getting an error at compilation.
More exactly, I'm getting an error whenever I try to override method createSession of an InteractiveSessionServlet class. Which is strange since InteractiveSessionServlet is not a private class.
I would be very grateful if anyone could give me a hand on this.
Here is my code:
import java.util.concurrent.atomic.AtomicLong
import org.scalatra.servlet.ScalatraListener
import org.apache.livy.{LivyClient, LivyConf}
import org.apache.livy.client.common.Serializer
import org.apache.livy.server.WebServer
import org.apache.livy.server.interactive.InteractiveSession
import org.scalatest.{BeforeAndAfterAll, FlatSpec, Matchers}
private object LivyServerMock {
// Hack warning: keep the session object available so that individual tests can mock
// the desired behavior before making requests to the server.
var session: InteractiveSession = _
}
class LivyServerMock extends FlatSpec with Matchers with BeforeAndAfterAll {
import LivyServerMock.session
private val TIMEOUT_S = 10
private val ID_GENERATOR = new AtomicLong()
private val serializer = new Serializer()
private var server: WebServer = _
private var client: LivyClient = _
override def beforeAll(): Unit = {
super.beforeAll()
server = new WebServer(new LivyConf(), "0.0.0.0", 0)
server.context.setResourceBase("src/main/org/apache/livy/server")
server.context.setInitParameter(ScalatraListener.LifeCycleKey,
classOf[HttpClientTestBootstrap].getCanonicalName)
server.context.addEventListener(new ScalatraListener)
server.start()
}
override def afterAll(): Unit = {
super.afterAll()
if (server != null) {
server.stop()
server = null
}
if (client != null) {
client.stop(true)
client = null
}
session = null
}
}
private class HttpClientTestBootstrap extends LifeCycle {
private implicit def executor: ExecutionContext = ExecutionContext.global
override def init(context: ServletContext): Unit = {
val conf = new LivyConf()
val accessManager = null
val stateStore = mock(classOf[SessionStore])
val sessionManager = new InteractiveSessionManager(conf, stateStore, Some(Seq.empty))
val servlet = new InteractiveSessionServlet(sessionManager, stateStore, conf, accessManager) {
override def createSession(req: HttpServletRequest): InteractiveSession = {
val session = mock(classOf[InteractiveSession])
val id = sessionManager.nextId()
when(session.id).thenReturn(id)
when(session.name).thenReturn(None)
when(session.appId).thenReturn(None)
when(session.appInfo).thenReturn(AppInfo())
when(session.state).thenReturn(SessionState.Idle)
when(session.proxyUser).thenReturn(None)
when(session.kind).thenReturn(Spark)
when(session.stop()).thenReturn(Future.successful(()))
require(LivyServerMock.session == null, "Session already created?")
LivyServerMock.session = session
session
}
}
// hack to access LivyConnection's SESSIONS_URI parameter field
val mirror = ru.runtimeMirror(getClass.getClassLoader)
val symbolClass = mirror.staticClass("org.apache.livy.client.http.LivyConnection")
val LivyConnection_SESSIONS_URI = symbolClass.toType.decl(ru.TermName("SESSIONS_URI")).asTerm.asInstanceOf[String]
context.mount(servlet, s"$LivyConnection_SESSIONS_URI/*")
}
}
and my error on console is
Error:scalac: Error: assertion failed:
class JsonServlet
while compiling: .../HttpClientTestBootstrap.scala
during phase: erasure
library version: version 2.11.12
compiler version: version 2.11.12
reconstructed args: -language:higherKinds -Ywarn-unused-import -encoding utf8 -deprecation -feature -classpath /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/charsets.jar.
......
last tree to typer: This(<$anon: () => String>)
tree position: line 64 of ..../HttpClientTestBootstrap.scala
symbol: final <$anon: () => String>
symbol definition: final class $anonfun extends AbstractFunction0[String] with Serializable (a ClassSymbol)
symbol package: co.invenis.uvenix.iss.utilities
symbol owners: <$anon: () => String> -> method createSession -> <$anon: org.apache.livy.server.interactive.InteractiveSessionServlet> -> value servlet -> method init -> class HttpClientTestBootstrap
call site: method createSession in package utilities
== Source file context for tree position ==
61 when(session.kind).thenReturn(Spark)
62 when(session.stop()).thenReturn(Future.successful(()))
63 require(LivyServerMock.session == null, "Session already created?")
64 LivyServerMock.session = session
65 session
66 }
67 }
at scala.tools.nsc.transform.AddInterfaces.transformMixinInfo(AddInterfaces.scala:217)
at scala.tools.nsc.transform.Erasure.transformInfo(Erasure.scala:388)
at scala.tools.nsc.transform.InfoTransform$Phase$$anon$1.transform(InfoTransform.scala:38)
at scala.reflect.internal.Symbols$Symbol.rawInfo(Symbols.scala:1625)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1545)
at scala.reflect.internal.Types$TypeRef.thisInfo(Types.scala:2199)
at scala.reflect.internal.Types$TypeRef.baseClasses(Types.scala:2204)
at scala.reflect.internal.Types$class.computeBaseClasses(Types.scala:1430)
at scala.reflect.internal.SymbolTable.computeBaseClasses(SymbolTable.scala:16)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$CompoundType.memo(Types.scala:1398)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1565)
at scala.reflect.internal.Types$class.define$1(Types.scala:1532)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1533)
at scala.reflect.internal.SymbolTable.defineBaseClassesOfCompoundType(SymbolTable.scala:16)
at scala.reflect.internal.Types$CompoundType.baseClasses(Types.scala:1375)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$2.apply(Types.scala:1565)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$2.apply(Types.scala:1565)
at scala.reflect.internal.Types$CompoundType.memo(Types.scala:1398)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1565)
at scala.reflect.internal.Types$class.define$1(Types.scala:1532)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1533)
at scala.reflect.internal.SymbolTable.defineBaseClassesOfCompoundType(SymbolTable.scala:16)
at scala.reflect.internal.Types$CompoundType.baseClasses(Types.scala:1375)
at scala.reflect.internal.Types$TypeRef.baseClasses(Types.scala:2204)
at scala.reflect.internal.Types$class.computeBaseClasses(Types.scala:1430)
at scala.reflect.internal.SymbolTable.computeBaseClasses(SymbolTable.scala:16)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$CompoundType.updateCache$1(Types.scala:1392)
at scala.reflect.internal.Types$CompoundType.memo(Types.scala:1401)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1565)
at scala.reflect.internal.Types$class.define$1(Types.scala:1532)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1533)
at scala.reflect.internal.SymbolTable.defineBaseClassesOfCompoundType(SymbolTable.scala:16)
at scala.reflect.internal.Types$CompoundType.baseClasses(Types.scala:1375)
at scala.reflect.internal.Types$TypeRef.baseClasses(Types.scala:2204)
at scala.reflect.internal.Types$class.computeBaseClasses(Types.scala:1430)
at scala.reflect.internal.SymbolTable.computeBaseClasses(SymbolTable.scala:16)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$1.apply(Types.scala:1565)
at scala.reflect.internal.Types$CompoundType.memo(Types.scala:1398)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1565)
at scala.reflect.internal.Types$class.define$1(Types.scala:1532)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1533)
at scala.reflect.internal.SymbolTable.defineBaseClassesOfCompoundType(SymbolTable.scala:16)
at scala.reflect.internal.Types$CompoundType.baseClasses(Types.scala:1375)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$2.apply(Types.scala:1565)
at scala.reflect.internal.Types$$anonfun$defineBaseClassesOfCompoundType$2.apply(Types.scala:1565)
at scala.reflect.internal.Types$CompoundType.memo(Types.scala:1398)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1565)
at scala.reflect.internal.Types$class.define$1(Types.scala:1532)
at scala.reflect.internal.Types$class.defineBaseClassesOfCompoundType(Types.scala:1533)
at scala.reflect.internal.SymbolTable.defineBaseClassesOfCompoundType(SymbolTable.scala:16)
at scala.reflect.internal.Types$CompoundType.baseClasses(Types.scala:1375)
at scala.reflect.internal.Symbols$Symbol.ancestors(Symbols.scala:2150)
at scala.reflect.internal.Symbols$Symbol.mixinClasses(Symbols.scala:2146)
at scala.tools.nsc.transform.AddInterfaces.scala$tools$nsc$transform$AddInterfaces$$addMixinConstructorCalls(AddInterfaces.scala:313)
at scala.tools.nsc.transform.AddInterfaces$$anon$1$$anonfun$14.apply(AddInterfaces.scala:344)
at scala.tools.nsc.transform.AddInterfaces$$anon$1$$anonfun$14.apply(AddInterfaces.scala:344)
at scala.reflect.internal.Trees$class.deriveDefDef(Trees.scala:1810)
at scala.reflect.internal.SymbolTable.deriveDefDef(SymbolTable.scala:16)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:344)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587)
at scala.collection.immutable.List.loop$1(List.scala:176)
at scala.collection.immutable.List.mapConserve(List.scala:200)
at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:335)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1404)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer.transformTemplate(Trees.scala:2563)
at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1408)
at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1407)
at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1406)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587)
at scala.collection.immutable.List.loop$1(List.scala:176)
at scala.collection.immutable.List.mapConserve(List.scala:200)
at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:335)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1366)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$$anonfun$itransform$1.apply(Trees.scala:1357)
at scala.reflect.internal.Trees$$anonfun$itransform$1.apply(Trees.scala:1356)
at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1355)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587)
at scala.collection.immutable.List.loop$1(List.scala:176)
at scala.collection.immutable.List.mapConserve(List.scala:200)
at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:335)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1366)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$$anonfun$itransform$2.apply(Trees.scala:1363)
at scala.reflect.internal.Trees$$anonfun$itransform$2.apply(Trees.scala:1361)
at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1360)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587)
at scala.collection.immutable.List.loop$1(List.scala:176)
at scala.collection.immutable.List.mapConserve(List.scala:200)
at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:335)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1404)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer.transformTemplate(Trees.scala:2563)
at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1408)
at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1407)
at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1406)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589)
at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587)
at scala.collection.immutable.List.loop$1(List.scala:176)
at scala.collection.immutable.List.mapConserve(List.scala:200)
at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:335)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transformStats(AddInterfaces.scala:333)
at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1426)
at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1426)
at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600)
at scala.reflect.internal.Trees$class.itransform(Trees.scala:1425)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16)
at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:339)
at scala.tools.nsc.transform.AddInterfaces$$anon$1.transform(AddInterfaces.scala:333)
at scala.tools.nsc.transform.Erasure$ErasureTransformer$$anonfun$transform$2.apply(Erasure.scala:1179)
at scala.tools.nsc.transform.Erasure$ErasureTransformer$$anonfun$transform$2.apply(Erasure.scala:1178)
at scala.reflect.internal.SymbolTable.enteringPhase(SymbolTable.scala:235)
at scala.reflect.internal.SymbolTable.exitingPhase(SymbolTable.scala:256)
at scala.tools.nsc.transform.Erasure$ErasureTransformer.transform(Erasure.scala:1178)
at scala.tools.nsc.transform.Erasure$ErasureTransformer.transform(Erasure.scala:759)
at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:147)
at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:30)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase$1.apply$mcV$sp(Global.scala:467)
at scala.tools.nsc.Global$GlobalPhase.withCurrentUnit(Global.scala:458)
at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:467)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:425)
at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:425)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:425)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1528)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1513)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1508)
at scala.tools.nsc.Global$Run.compile(Global.scala:1609)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:130)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:105)
at xsbt.CompilerInterface.run(CompilerInterface.scala:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sbt.internal.inc.AnalyzingCompiler.call(AnalyzingCompiler.scala:237)
at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:111)
at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:90)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:42)
at org.jetbrains.jps.incremental.scala.remote.Main$.compileLogic(Main.scala:133)
at org.jetbrains.jps.incremental.scala.remote.Main$.$anonfun$handleCommand$1(Main.scala:123)
at org.jetbrains.jps.incremental.scala.remote.Main$.compilingNowCounterDecorated$1(Main.scala:112)
at org.jetbrains.jps.incremental.scala.remote.Main$.handleCommand(Main.scala:120)
at org.jetbrains.jps.incremental.scala.remote.Main$.serverLogic(Main.scala:96)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:55)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)