ClassNotFoundException when running with jar file

Gatling (Open-Source)
1

I get my code running correctly using maven on my local machine, example:

mvn gatling:execute -Dproperty1=value1

Once I build the fat-jar, I can’t get it running via this command:

java -DsimulationClass=simulations.ActualSimulationClass -Dproperty1=value1 -cp ske-test-gatling-0.0.1-SNAPSHOT-jar-with-dependencies.jar StartSimulation

and the StartSimulation class goes like this

import io.gatling.app.Gatling
import io.gatling.core.config.GatlingPropertiesBuilder

object Engine extends App {

val props = new GatlingPropertiesBuilder
props.dataDirectory(IDEPathHelper.dataDirectory.toString)
props.resultsDirectory(IDEPathHelper.resultsDirectory.toString)
props.bodiesDirectory(IDEPathHelper.bodiesDirectory.toString)
props.binariesDirectory(IDEPathHelper.mavenBinariesDirectory.toString)

Gatling.fromMap(props.build)
}

Here’s the full stack trace:

developer@sit1b046-3:~/workspace/mp-nav-inntekt-gatling/target$ Exception in thread “main” java.lang.NoClassDefFoundError: scala/Function0
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2615)
at java.lang.Class.getMethod0(Class.java:2856)
at java.lang.Class.getMethod(Class.java:1668)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: scala.Function0
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
… 6 more

could anybody help please?

Versions:
scala.version: 2.11.6

gatling.version: 2.1.7
gatling-maven-plugin.version: 2.1.7
scala-maven-plugin.version: 3.2.0

Amir

2

Looks that the scala-library jar is missing from your fat JAR. Can you check that it’s there ?

3

Appreciate the prompt reply!

I get this by unzipping the jar file:

developer@sit1b046-3:~/workspace/mp-nav-inntekt-gatling/target$ unzip -l ske-test-gatling-0.0.1-SNAPSHOT-jar-with-dependencies.jar | grep -i scala
0 2015-08-18 13:42 test/scala/
0 2015-08-18 13:42 test/scala/conf/
0 2015-08-18 13:42 test/scala/registry/
0 2015-08-18 13:42 test/scala/simulations/
1661 2011-11-04 19:38 org/codehaus/jackson/map/deser/std/StdScalarDeserializer.class
342 2015-08-18 13:42 test/scala/conf/MPUriProvider.scala
426 2015-08-18 13:42 test/scala/conf/MPNAVInntektHttpConf.scala
484 2015-08-18 13:42 test/scala/registry/Registry.scala
994 2011-11-04 19:38 org/codehaus/jackson/map/ser/ScalarSerializerBase.class
1620 2011-11-04 19:38 org/codehaus/jackson/map/ser/std/NonTypedScalarSerializerBase.class
2464 2015-08-18 13:42 test/scala/simulations/MPHentInntektSimulation.scala
462 2015-08-18 13:42 test/scala/StartSimulation.scala
799 2011-11-04 19:38 org/codehaus/jackson/map/deser/StdScalarDeserializer.class
2406 2011-11-04 19:38 org/codehaus/jackson/map/ser/std/ScalarSerializerBase.class
571 2015-08-18 13:42 test/scala/conf/TestSetup.scala

Except those few files under “org/codehaus/jackson/map/”, the rest are all my own source files. So, yeah I guess I’m missing the scala library there.
What’s the solution?

Amir

4

I think that the plugin packaging Gatling and the simulations in your fat JAR is configured incorrectly. Can’t help much on that, I suggest that you have a look at that plugin’s configuration to see how to package all your dependencies in your fat JAR.

Cheers,

Pierre