TypeToClassConverter is unable to handle types `? extends <other>`

[timonback]

Describe the bug
There is an exception during startup

Dependencies and versions used
For example, springwolf-kafka version 1.3.0.

Stack trace and error logs

java.lang.NullPointerException: Cannot invoke "io.github.springwolf.asyncapi.v3.model.schema.SchemaObject.getTitle()" because the return value of "io.github.springwolf.core.asyncapi.scanners.common.payload.NamedSchemaObject.schema()" is null 
at io.github.springwolf.plugins.kafka.asyncapi.scanners.common.header.AsyncHeadersForKafkaBuilder.buildHeaders(AsyncHeadersForKafkaBuilder.java:13) 	
at io.github.springwolf.core.asyncapi.scanners.common.MethodLevelAnnotationScanner.buildMessage(MethodLevelAnnotationScanner.java:33) 	
at io.github.springwolf.core.asyncapi.scanners.operations.annotations.SpringAnnotationMethodLevelOperationsScanner.buildOperation(SpringAnnotationMethodLevelOperationsScanner.java:72) 	
at io.github.springwolf.core.asyncapi.scanners.operations.annotations.SpringAnnotationMethodLevelOperationsScanner.mapMethodToOperation(SpringAnnotationMethodLevelOperationsScanner.java:67)

Previous error:

2024-06-07T08:31:09.669+02:00 DEBUG 23132 --- [<replaced>] [  restartedMain] i.g.s.c.a.s.c.p.TypeToClassConverter     : Unable to find class for type ? extends <replaced>

java.lang.ClassNotFoundException: ? extends <replaced>
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:421)
	at java.base/java.lang.Class.forName(Class.java:412)
	at io.github.springwolf.core.asyncapi.scanners.common.payload.TypeToClassConverter.extractActualGenericClass(TypeToClassConverter.java:64)
	at io.github.springwolf.core.asyncapi.scanners.common.payload.TypeToClassConverter.extractClass(TypeToClassConverter.java:31)
	at io.github.springwolf.core.asyncapi.scanners.common.payload.PayloadClassExtractor.lambda$extractFrom$0(PayloadClassExtractor.java:24)
	at java.base/java.util.Optional.map(Optional.java:260)
	at io.github.springwolf.core.asyncapi.scanners.common.payload.PayloadClassExtractor.extractFrom(PayloadClassExtractor.java:23)
	at io.github.springwolf.core.asyncapi.scanners.common.payload.PayloadService.extractSchema(PayloadService.java:32)
	at io.github.springwolf.core.asyncapi.scanners.channels.annotations.SpringAnnotationMethodLevelChannelsScanner.mapMethodToChannel(SpringAnnotationMethodLevelChannelsScanner.java:60)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:276)
	at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622)
	at java.base/java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627)
	at io.github.springwolf.core.asyncapi.scanners.channels.SpringAnnotationChannelsScanner.mapToChannels(SpringAnnotationChannelsScanner.java:33)
	at io.github.springwolf.core.asyncapi.scanners.channels.SpringAnnotationChannelsScanner.scan(SpringAnnotationChannelsScanner.java:25)
	at io.github.springwolf.core.asyncapi.channels.DefaultChannelsService.findChannels(DefaultChannelsService.java:34)
	at io.github.springwolf.core.asyncapi.DefaultAsyncApiService.initAsyncAPI(DefaultAsyncApiService.java:69)
	at io.github.springwolf.core.asyncapi.DefaultAsyncApiService.getAsyncAPI(DefaultAsyncApiService.java:42)

[ismail-bertalfilali]

Hello,

  We have the same issue in both versions 1.2.0 and 1.3.0 but not in 1.1.0, any update ?

Thx

[github-actions]

The change is staged for release and will be part of the next release.

If you want to try and verify it in your application today,
use the latest 1.X.0-SNAPSHOT build as described in our README.md > Testing SNAPSHOT version

Thank you for the report/contribution!

[github-actions]

The change is available in the latest release. 🎉

Thank you for the report/contribution and making Springwolf better!