Protelis-related IllegalArgumentException on Shadow JAR

[NiccoMlt]

When running code with runShadow Gradle task (provided by Vert.x plugin for Gradle and using Gradle Shadow plugin), during simulation creation IllegalArgumentException is thrown:

Exception in thread "DefaultDispatcher-worker-2" java.lang.IllegalArgumentException: Could not create the requested Protelis program: eval(env.get("_to_exec")) at it.unibo.alchemist.model.ProtelisIncarnation.createAction(ProtelisIncarnation.java:135) at it.unibo.alchemist.model.ProtelisIncarnation.createReaction(ProtelisIncarnation.java:208) at it.unibo.alchemist.loader.YamlLoader.lambda$getWith$22(YamlLoader.java:589) at it.unibo.alchemist.loader.YamlLoader$BuilderConfiguration.lambda$build$0(YamlLoader.java:864) at it.unibo.alchemist.loader.YamlLoader$BuilderConfiguration.ifMap(YamlLoader.java:872) at it.unibo.alchemist.loader.YamlLoader$BuilderConfiguration.build(YamlLoader.java:850) at it.unibo.alchemist.loader.YamlLoader$Builder.build(YamlLoader.java:830) at it.unibo.alchemist.loader.YamlLoader.getWith(YamlLoader.java:591) at it.unibo.alchemist.loader.YamlLoader.getDefault(YamlLoader.java:398) at it.unibo.protelis.web.execution.simulated.SimulatedProtelisEngine$setupSimulationAsync$1.invokeSuspend(SimulatedProtelisEngine.kt:66) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56) at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:561) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:727) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:667) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:655) Caused by: java.util.MissingResourceException: The string resource '_UI_DiagnosticRoot_diagnostic' could not be located Caused by: java.util.MissingResourceException: The string resource '_UI_DiagnosticRoot_diagnostic' could not be located

at org.eclipse.emf.common.util.DelegatingResourceLocator.delegatedGetString(DelegatingResourceLocator.java:480) at org.eclipse.emf.common.util.DelegatingResourceLocator.getString(DelegatingResourceLocator.java:385) at org.eclipse.emf.common.util.DelegatingResourceLocator.getString(DelegatingResourceLocator.java:499) at org.eclipse.emf.common.util.DelegatingResourceLocator.getString(DelegatingResourceLocator.java:491) at org.eclipse.emf.ecore.util.Diagnostician.createDefaultDiagnostic(Diagnostician.java:88) at org.eclipse.emf.ecore.util.Diagnostician.validate(Diagnostician.java:107) at org.protelis.lang.ProtelisLoader.parse(ProtelisLoader.java:268) at org.protelis.lang.ProtelisLoader.parseAnonymousModule(ProtelisLoader.java:338) at org.protelis.lang.ProtelisLoader.lambda$parse$5(ProtelisLoader.java:317) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.protelis.lang.ProtelisLoader.parse(ProtelisLoader.java:317) at it.unibo.alchemist.model.implementations.actions.RunProtelisProgram.(RunProtelisProgram.java:123) at it.unibo.alchemist.model.implementations.actions.RunProtelisProgram.(RunProtelisProgram.java:96) at it.unibo.alchemist.model.ProtelisIncarnation.createAction(ProtelisIncarnation.java:133) ... 15 more

This error does not happen when code is run with vertxRun task, so it's probably related to something missing in packetized shadow JAR.

[NiccoMlt]

I got this hint by email from professor:

Sembra un problema con gli internals di Xtext. Forse manca qualche risorsa nel classpath

sì, parrebbe... https://stackoverflow.com/questions/38043360/error-when-validating-xtext-dsl-in-standalone-java-project

I also think these solutions could be helpful for my issue:

• Create a plugin.properties file and jar it. The content should contain this entry: _UI_DiagnosticRoot_diagnostic=_UI_DiagnosticRoot_diagnostic

  from: https://www.eclipse.org/forums/index.php?t=msg&th=440750&goto=988308&#msg_988308

• Found it:

  Adding org.eclipse.emf.ecore/runtime/ecore.resources.jar to the classpath will work. See http://www.eclipse.org/emf/faq/faq.php#dnl20050114-120205 for more details.

  from: https://www.eclipse.org/forums/index.php?t=msg&th=130128&goto=402682&#msg_402682

• I did the following:

  1. create a new xtext project.

  2. adapt workflow to generate java main for generator

  3. generate lang

  4. run generated java main once

  5. use the export as runnable jar file, tell it to create a ant file

  6. copy the ant file to the project

  7. adapted the ant file to include another file at the end

     <fileset dir="${dir.workspace}/org.xtext.example.mydsl2/">
         <include name="plugin.properties"/>
     </fileset>

  8. create org.xtext.example.mydsl2/plugin.properties as follows

     _UI_DiagnosticRoot_diagnostic=Dont Care

     well i was too lazy to look up the real values and the other key value pairs

  9. rerun ant file

  10. have fun

  if I'd be an ant wizard i would somehow adapt the build.xml to create a plugin.properties that contains all plugin.properties of the unpacked files merged unfortunately i am not an ant wizard

  and

  What I ended up doing was using the extract option and simply adding the _UI_Diagnostic line to the plugin.properties file, slightly annoying that simply trying to use a DSL in a standalone project is this troublesome, thank you for the assistance nonetheless.

  from: https://www.eclipse.org/forums/index.php?t=msg&th=1078740&goto=1738088&#msg_1738088

• You need a plugin.properties file on you class path/your jar root

  <echo file="${binJarTemp}/plugin.properties">_UI_DiagnosticRoot_diagnostic=_UI_DiagnosticRoot_diagnostic</echo>

  from: https://www.eclipse.org/forums/index.php?t=msg&th=487563&goto=1058824&#msg_1058824