Scala script error about mod-lang-scala HOT 16 CLOSED

I get the same error - we both added the entries for scala in langs.properties in Vert.x 2.0.2-final. @galderz can you please have a look at this? Seems like running scripts doesn't really work when using vertx run X ?

from mod-lang-scala.

If you're trying to use latest master, you have to build mod-lang-scala jars locally and copy them over to you have to copy over the jar files. These are the instructions I use (adjust to your own env) when testing scripts with snapshot releases I build locally.

from mod-lang-scala.

Okay, so after doing this:

./gradlew install
vertx install io.vertx~lang-scala~0.2.0-SNAPSHOT

I don't have the jar files of mod-lang-scala inside its own module dir in sys-mods, even though the .class files are available directly in the module directory (not in lib/ as jars).

So putting these .class files into a jar and adding those into the modules lib directory seems to do the trick.

Why is that? Is this a general Vert.x issue, that it needs the language modules in a really strange format and cannot do that itself on install? Do we have to change something in the gradle build?

Will users have to do this themselves when they try to run Scala code?

from mod-lang-scala.

You shouldn't have to copy anything manually - perhaps you're not building mod-lang-scala properly with the jar files in it's lib directory?

from mod-lang-scala.

@purplefox we have the following structure in the module:

lib/
  + scala-library.jar
  + scala-compiler.jar
  + scala-reflect.jar
org/vertx/scala/
  + All the class files in their respective package...
mod.json

It looks like we need to have all the org/vertx/scala/<class-files> in a .jar and put that inside the lib/ directory as well, otherwise it won't work. That's strange that it somehow doesn't use the class files directly. Just tried a JS Script which downloaded lang-rhino and a Groovy Script with lang-groovy: Their modules have the same structure and do not need their class-files (or js scripts) in a jar lying in <mod-name>/lib/<classes-jar>. So something still is wrong with the Scala module and we shouldn't need to copy anything around in it... Guess the interpreter somehow gets the wrong ClassLoader so it doesn't have org.vertx.scala.* available? Or that regex stuff which adds the *.jar files should add the module directory itself, too?

from mod-lang-scala.

Most probably you have a classloader issue in the mod-lang-scala module. Did you implement the recommendation I made last time about removing the second classloader that was being specifically used for scripts?

from mod-lang-scala.

Looks like it doesn't have a second class loader anymore. @galderz knows more about the implementation now...

from mod-lang-scala.

This line looks suspicious to me:

https://github.com/vert-x/mod-lang-scala/blob/master/src/main/scala/org/vertx/scala/lang/ScalaInterpreter.scala#L28

Does this mean it's setting the context class loader to null?

from mod-lang-scala.

Looks like this assembles the classpath for the interpreter:

https://github.com/vert-x/mod-lang-scala/blob/master/src/main/scala/org/vertx/scala/platform/impl/ScalaVerticleFactory.scala#L126

But it looks strange to me, can't the interpreter just load resources from the context classloader? It seems odd to have to construct it this way...

from mod-lang-scala.

As far as I know you cant, you have to explicitly set the interpreter's
classpath.

On Thu, Oct 24, 2013 at 7:19 PM, Tim Fox [email protected] wrote:

Looks like this assembles the classpath for the interpreter:

https://github.com/vert-x/mod-lang-scala/blob/master/src/main/scala/org/vertx/scala/platform/impl/ScalaVerticleFactory.scala#L126

But it looks strange to me, can't the interpreter just load resources from
the context classloader? It seems odd to have to construct it this way...

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from mod-lang-scala.

Guys, leave this with me and I'll sort it out :)

from mod-lang-scala.

My fault guys, I messed it up when I refactored the ScalaVerticleFactory to split the interpreter out. PR coming right up...

from mod-lang-scala.

This is very weird. While trying to verify fix for #69 this issue seems to have reappeared :|. This was working with the 2.0.x snapshot, so maybe when we switched to 2.1-M1 something changed in the way Vert.x module classloader. Looking into it...

from mod-lang-scala.

Fixed properly now. Apologies for the inconvenience.

from mod-lang-scala.

I still get this error when using 2.1M2 ?

λ omnivore scala → λ git master → vertx run http/Server.scala
Downloading io.vertxlang-scala0.2.0. Please wait...
Downloading 100%
Module io.vertxlang-scala0.2.0 successfully installed
Compiling http/Server.scala as Scala script
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
:7: error: object scala is not a member of package org.vertx
import org.vertx.scala., org.vertx.scala.core., org.vertx.scala.core.buffer., org.vertx.scala.core.dns., org.vertx.scala.core.eventbus., org.vertx.scala.core.file., org.vertx.scala.core.http., org.vertx.scala.core.json., org.vertx.scala.core.net., org.vertx.scala.core.streams.
^
Script contains compilation errors, or http/Server.scala is a Scala class (pass -Dvertx.scala.interpreter.verbose=true to find out more)
Compiling as a Scala class
/Volumes/data-store/src/vertx-examples/src/raw/scala/http/Server.scala:17: error: expected class or object definition
vertx.createHttpServer.requestHandler { req: HttpServerRequest =>
^
Failed in deploying verticle
java.lang.IllegalArgumentException: Unable to run http/Server.scala as neither Scala script nor Scala class
at org.vertx.scala.platform.impl.ScalaVerticleFactory$$anonfun$1.apply(ScalaVerticleFactory.scala:116)
at org.vertx.scala.platform.impl.ScalaVerticleFactory$$anonfun$1.apply(ScalaVerticleFactory.scala:116)
at scala.Option.getOrElse(Option.scala:120)
at org.vertx.scala.platform.impl.ScalaVerticleFactory.load(ScalaVerticleFactory.scala:115)
at org.vertx.scala.platform.impl.ScalaVerticleFactory.createVerticle(ScalaVerticleFactory.scala:68)
at org.vertx.java.platform.impl.DefaultPlatformManager$19.run(DefaultPlatformManager.java:1540)
at org.vertx.java.core.impl.DefaultContext$3.run(DefaultContext.java:176)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
at java.lang.Thread.run(Thread.java:724)

Failed in deploying verticle
java.lang.IllegalArgumentException: Unable to run http/Server.scala as neither Scala script nor Scala class
at org.vertx.scala.platform.impl.ScalaVerticleFactory$$anonfun$1.apply(ScalaVerticleFactory.scala:116)
at org.vertx.scala.platform.impl.ScalaVerticleFactory$$anonfun$1.apply(ScalaVerticleFactory.scala:116)
at scala.Option.getOrElse(Option.scala:120)
at org.vertx.scala.platform.impl.ScalaVerticleFactory.load(ScalaVerticleFactory.scala:115)
at org.vertx.scala.platform.impl.ScalaVerticleFactory.createVerticle(ScalaVerticleFactory.scala:68)
at org.vertx.java.platform.impl.DefaultPlatformManager$19.run(DefaultPlatformManager.java:1540)
at org.vertx.java.core.impl.DefaultContext$3.run(DefaultContext.java:176)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
at java.lang.Thread.run(Thread.java:724)

from mod-lang-scala.

You are using the latest available release, 0.2.0, which is known to have that issue. In the mean time, please do gradle install from master locally and then point conf/lang.properties to the 0.3.0-SNAPSHOT version.

from mod-lang-scala.