Error running from jar: NoClassDefFoundError: akka/util/Logging

[Daniel Glauser]

Hello folks,

I have a small sample app that I've built with Scala, Akka, and sbt.
I'd like to package it as a jar, ship it off to a bunch of boxes and
start to get some load numbers based off of different configurations.

When I try and execute the jar I get:

java -cp my_project_2.8.1-1.0.jar:$AKKA_HOME/dist/akka-remote-1.1-
SNAPSHOT.jar:$AKKA_HOME/dist/akka-actor-1.1-SNAPSHOT.jar:$AKKA_HOME/
akka-remote/lib_managed/compile/protobuf-java-2.3.0.jar:$AKKA_HOME/
akka-remote/lib_managed/compile/protobuf-java-2.3.0.jar:$AKKA_HOME/
akka-remote/lib_managed/compile/netty-3.2.3.Final.jar:$AKKA_HOME/akka-
stm/lib_managed/compile/multiverse-alpha-0.6.2.jar:$AKKA_HOME/project/
boot/scala-2.8.1/lib/scala-library.jar vmware.caf.Server
AKKA_HOME is defined as [/Users/me/Projects/scala/akka], loading
config from [/Users/me/Projects/scala/akka/config/akka.conf].
Exception in thread "main" java.lang.NoClassDefFoundError: akka/util/
Logging
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.getDeclaredConstructor(Class.java:1985)
at akka.util.ReflectiveAccess$.createInstance(ReflectiveAccess.scala:
123)
at akka.actor.Actor$$anonfun$actorOf$1.apply(Actor.scala:305)
at akka.actor.Actor$$anonfun$actorOf$1.apply(Actor.scala:303)
at akka.actor.LocalActorRef$$anonfun$4.apply(ActorRef.scala:974)
at akka.actor.LocalActorRef$$anonfun$4.apply(ActorRef.scala:974)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:71)
at akka.actor.LocalActorRef.akka$actor$LocalActorRef$
$newActor(ActorRef.scala:974)
at akka.actor.LocalActorRef$$anonfun$3.apply(ActorRef.scala:572)
at akka.actor.LocalActorRef$$anonfun$3.apply(ActorRef.scala:572)
at akka.util.ReentrantGuard.withGuard(LockUtil.scala:20)
at akka.actor.LocalActorRef.<init>(ActorRef.scala:572)
at akka.actor.Actor$.actorOf(Actor.scala:303)
at akka.actor.Actor$.actorOf(Actor.scala:287)
at vmware.caf.Server$.run(RemoteActorServer.scala:34)
at vmware.caf.Server$.main(RemoteActorServer.scala:38)
at vmware.caf.Server.main(RemoteActorServer.scala)
Caused by: java.lang.ClassNotFoundException: akka.util.Logging
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 20 more

Does anyone have any suggestions?

Thanks,
Daniel

[Jonas Bonér]

The logging trait has been removed in master (and 1.1-SNAPSHOT). 

There is now a Logging trait in the akka-slf4j module. 

The preferred way in Akka 1.1 and forward is to use the EventHandler. 

Read more here: http://doc.akka.io/event-handler

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[Daniel Glauser]

Thanks for the explanation Jonas.  The only problem is I'm not making any explicit logging calls:

at akka.actor.LocalActorRef.<init>(ActorRef.scala:572)

at akka.actor.Actor$.actorOf(Actor.scala:303)

at akka.actor.Actor$.actorOf(Actor.scala:287)

I believe I'm building against 1.1-SNAPSHOT:

class Plugins(info: ProjectInfo) extends PluginDefinition(info) {

  val akkaRepo = "Akka Repo" at "http://akka.io/repository"

  val akkaPlugin = "se.scalablesolutions.akka" % "akka-sbt-plugin" % "1.1-SNAPSHOT"

}

I tried pulling the latest from Github and building myself with sbt but that seems currently broken as well.

Tried dropping back to 1.0 and I still get the same error:

NoClassDefFoundError: akka/util/Logging

In:

at akka.actor.LocalActorRef.<init>(ActorRef.scala:572)

at akka.actor.Actor$.actorOf(Actor.scala:303)

at akka.actor.Actor$.actorOf(Actor.scala:287)

Is there a specific version of Akka that I should try?

Thanks,

Daniel

[Jonas Bonér]

Try deleting .ivy and .m2 dirs and rebuild.

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Jonas Bonér

http://scalablesolutions.se
http://jonasboner.com
http://akka.io
http://letitcrash.com