Quarkus: Kogito with Decision table NullPointerException

Created on 22 Nov 2019 · 10Comments · Source: quarkusio/quarkus

Describe the bug
create a project with Kogito extension add to src/main/ressources/ a simple xls decision table you will get a NullPointerException at compile time
Caused by: java.lang.NullPointerException at org.drools.compiler.compiler.DecisionTableFactory.loadFromResource(DecisionTableFactory.java:35)

Person POJO

package org.acme.kogito.model;
public class Person {
    private String name;
    private int age;
    private boolean adult;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public boolean isAdult() {
        return adult;
    }
    public void setAdult(boolean adult) {
        this.adult = adult;
    }
    @Override
    public String toString() {
        return "Person [name=" + name + ", age=" + age + ", adult=" + adult + "]";
    }
}

Person Endpoint

@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Path("/person")
public class PersonResource {

    @Inject
    KieRuntimeBuilder runtimeBuilder;

    @POST
    public Person getCredit(Person p) {

        KieSession ksession = runtimeBuilder.newKieSession();
        ksession.insert(p);
        ksession.fireAllRules();
        return p;

    }
}

kmodule.xml (in src/main/resources/META-INF)

<kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.drools.org/xsd/kmodule" />

Expected behavior
Project can compile and excecute

Actual behavior
Actual stacktrace

Listening for transport dt_socket at address: 5005
18:16:39,095 ERROR [io.qua.run.RuntimeClassLoader] URL codeSource location for path C:\Users\Zoul.AKHDAR\git\QApplicationMicroService\QApplicationMicroService\target\classes could not be created.
18:16:39,546 INFO  [org.jbo.threads] JBoss Threads version 3.0.0.Final
18:16:40,778 ERROR [io.qua.dev.DevModeMain] Failed to start Quarkus: java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
        [error]: Build step io.quarkus.kogito.deployment.KogitoAssetsProcessor#generateModel threw an exception: java.lang.NullPointerException
        at org.drools.compiler.compiler.DecisionTableFactory.loadFromResource(DecisionTableFactory.java:35)
        at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.decisionTableToPackageDescr(KnowledgeBuilderImpl.java:392)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl$ResourceToPkgDescrMapper.lambda$static$4(CompositeKnowledgeBuilderImpl.java:320)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildResource(CompositeKnowledgeBuilderImpl.java:196)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackageDescr(CompositeKnowledgeBuilderImpl.java:183)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:97)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:181)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:71)
        at org.kie.kogito.codegen.ApplicationGenerator.lambda$generateComponents$7(ApplicationGenerator.java:217)
        at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
        at org.kie.kogito.codegen.ApplicationGenerator.generateComponents(ApplicationGenerator.java:218)
        at org.kie.kogito.codegen.ApplicationGenerator.generate(ApplicationGenerator.java:203)
        at io.quarkus.kogito.deployment.KogitoAssetsProcessor.generateModel(KogitoAssetsProcessor.java:152)
        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 io.quarkus.deployment.ExtensionLoader$1.execute(ExtensionLoader.java:941)
        at io.quarkus.builder.BuildContext.run(BuildContext.java:415)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2011)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1535)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1426)
        at java.lang.Thread.run(Thread.java:748)
        at org.jboss.threads.JBossThread.run(JBossThread.java:479)
        at io.quarkus.runner.RuntimeRunner.run(RuntimeRunner.java:157)
        at io.quarkus.dev.DevModeMain.doStart(DevModeMain.java:177)
        at io.quarkus.dev.DevModeMain.start(DevModeMain.java:95)
        at io.quarkus.dev.DevModeMain.main(DevModeMain.java:66)
Caused by: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
        [error]: Build step io.quarkus.kogito.deployment.KogitoAssetsProcessor#generateModel threw an exception: java.lang.NullPointerException
        at org.drools.compiler.compiler.DecisionTableFactory.loadFromResource(DecisionTableFactory.java:35)
        at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.decisionTableToPackageDescr(KnowledgeBuilderImpl.java:392)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl$ResourceToPkgDescrMapper.lambda$static$4(CompositeKnowledgeBuilderImpl.java:320)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildResource(CompositeKnowledgeBuilderImpl.java:196)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackageDescr(CompositeKnowledgeBuilderImpl.java:183)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:97)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:181)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:71)
        at org.kie.kogito.codegen.ApplicationGenerator.lambda$generateComponents$7(ApplicationGenerator.java:217)
        at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
        at org.kie.kogito.codegen.ApplicationGenerator.generateComponents(ApplicationGenerator.java:218)
        at org.kie.kogito.codegen.ApplicationGenerator.generate(ApplicationGenerator.java:203)
        at io.quarkus.kogito.deployment.KogitoAssetsProcessor.generateModel(KogitoAssetsProcessor.java:152)
        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 io.quarkus.deployment.ExtensionLoader$1.execute(ExtensionLoader.java:941)
        at io.quarkus.builder.BuildContext.run(BuildContext.java:415)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2011)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1535)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1426)
        at java.lang.Thread.run(Thread.java:748)
        at org.jboss.threads.JBossThread.run(JBossThread.java:479)
        at io.quarkus.builder.Execution.run(Execution.java:108)
        at io.quarkus.builder.BuildExecutionBuilder.execute(BuildExecutionBuilder.java:121)
        at io.quarkus.deployment.QuarkusAugmentor.run(QuarkusAugmentor.java:130)
        at io.quarkus.runner.RuntimeRunner.run(RuntimeRunner.java:111)
        ... 3 more
Caused by: java.lang.NullPointerException
        at org.drools.compiler.compiler.DecisionTableFactory.loadFromResource(DecisionTableFactory.java:35)
        at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.decisionTableToPackageDescr(KnowledgeBuilderImpl.java:392)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl$ResourceToPkgDescrMapper.lambda$static$4(CompositeKnowledgeBuilderImpl.java:320)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildResource(CompositeKnowledgeBuilderImpl.java:196)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackageDescr(CompositeKnowledgeBuilderImpl.java:183)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105)
        at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:97)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:181)
        at org.kie.kogito.codegen.rules.IncrementalRuleCodegen.generate(IncrementalRuleCodegen.java:71)
        at org.kie.kogito.codegen.ApplicationGenerator.lambda$generateComponents$7(ApplicationGenerator.java:217)
        at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
        at org.kie.kogito.codegen.ApplicationGenerator.generateComponents(ApplicationGenerator.java:218)
        at org.kie.kogito.codegen.ApplicationGenerator.generate(ApplicationGenerator.java:203)
        at io.quarkus.kogito.deployment.KogitoAssetsProcessor.generateModel(KogitoAssetsProcessor.java:152)
        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 io.quarkus.deployment.ExtensionLoader$1.execute(ExtensionLoader.java:941)
        at io.quarkus.builder.BuildContext.run(BuildContext.java:415)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2011)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1535)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1426)
        at java.lang.Thread.run(Thread.java:748)
        at org.jboss.threads.JBossThread.run(JBossThread.java:479)

18:16:40,793 INFO  [io.qua.dev.DevModeMain] Attempting to start hot replacement endpoint to recover from previous Quarkus startup failure

To Reproduce
Steps to reproduce the behavior:

create a quarkus project (quarkus version 1.0.0.CR2) and add Kogito extension
Put kmodule.xml in scr/main/resources/META-INF/
Put in src/main/resources an Excel decision table
Try to compile with mvn compile quarkus:dev

Environment (please complete the following information):
windows 10
Quarkus version 1.0.0.CR2
Decision table in .xlsx format
rules.xlsx

arekogito kinbug

Source

zakhdar

All 10 comments

/cc @mariofusco @mswiderski

gsmet on 22 Nov 2019

@zakhdar could you please check if you have following dependency in you pom?

    <dependency>
      <groupId>org.kie.kogito</groupId>
      <artifactId>drools-decisiontables</artifactId>
    </dependency>

Decision tables is an optional component and thats why not included by default

mswiderski on 22 Nov 2019

👍1

@mswiderski I don't know if it will solve the issue but in any case, we shouldn't have a NPE but a proper error message.

gsmet on 23 Nov 2019

I fully agree with that. Once we have this confirmed we will improve the error handling in this case

mswiderski on 23 Nov 2019

After added this dependency. No NPE and project compile fine ! Kogito extension load xlsx file right and execute all conditions.

didierboka on 23 Nov 2019

@dboka thanks for confirming the issue. I created Kogito Jira to track and fix it with next (0.6.0) version https://issues.jboss.org/browse/KOGITO-641

I believe this can be closed

mswiderski on 23 Nov 2019

it will be also interresting to mention this dependency in quarkus documentation

zakhdar on 23 Nov 2019

👍1

That’s a good suggestion. @mswiderski could you add something to the guide? Then we can close this issue.

Thanks!

gsmet on 23 Nov 2019

@gsmet @zakhdar created "using decision tables" section into kogito guide https://github.com/quarkusio/quarkus/pull/5725

mswiderski on 24 Nov 2019

Let's close this issue then. Thanks!

gsmet on 25 Nov 2019

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