Cannot open large project (keycloak)

[hmlnarik]

Type: Bug

Thank you for the great work on the Java support for VS Code.

Sadly large projects seem to struggle with "Connection to server got closed. Server will not be restarted." issue.

Steps to reproduce:

1. Checkout https://github.com/keycloak/keycloak
2. Open this project in VS Code

Related information:
Perhaps the following exception is related:

[Error - 2:00:57 PM] Sep 2, 2022, 2:00:57 PM Exception thrown by Java annotation processor io.fabric8.crd.generator.apt.CustomResourceAnnotationProcessor@26a90b40
java.lang.IllegalArgumentException: Found a cyclic reference involving the field subGroups of type org.keycloak.representations.idm.GroupRepresentation
java.lang.Exception: java.lang.IllegalArgumentException: Found a cyclic reference involving the field subGroups of type org.keycloak.representations.idm.GroupRepresentation
	at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:172)
	at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:113)
	at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:172)
	at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:138)
	at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:991)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:450)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:379)
	at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:311)
	at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:273)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:199)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:1024)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:254)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:311)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:400)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:403)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:514)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:462)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:544)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:161)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:255)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.lang.IllegalArgumentException: Found a cyclic reference involving the field subGroups of type org.keycloak.representations.idm.GroupRepresentation
	at io.fabric8.crd.generator.AbstractJsonSchema.resolveNestedClass(AbstractJsonSchema.java:618)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:599)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:558)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:259)
	at io.fabric8.crd.generator.AbstractJsonSchema.resolveNestedClass(AbstractJsonSchema.java:623)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:599)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:558)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:259)
	at io.fabric8.crd.generator.AbstractJsonSchema.resolveNestedClass(AbstractJsonSchema.java:623)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:599)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:558)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:259)
	at io.fabric8.crd.generator.AbstractJsonSchema.resolveNestedClass(AbstractJsonSchema.java:623)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:599)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:259)
	at io.fabric8.crd.generator.AbstractJsonSchema.resolveNestedClass(AbstractJsonSchema.java:623)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:599)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFromImpl(AbstractJsonSchema.java:259)
	at io.fabric8.crd.generator.AbstractJsonSchema.internalFrom(AbstractJsonSchema.java:128)
	at io.fabric8.crd.generator.v1beta1.JsonSchema.from(JsonSchema.java:47)
	at io.fabric8.crd.generator.v1beta1.CustomResourceHandler.addDecorators(CustomResourceHandler.java:68)
	at io.fabric8.crd.generator.AbstractCustomResourceHandler.handle(AbstractCustomResourceHandler.java:72)
	at io.fabric8.crd.generator.v1beta1.CustomResourceHandler.handle(CustomResourceHandler.java:99)
	at io.fabric8.crd.generator.CRDGenerator.lambda$detailedGenerate$4(CRDGenerator.java:154)
	at java.base/java.util.HashMap$Values.forEach(Unknown Source)
	at io.fabric8.crd.generator.CRDGenerator.detailedGenerate(CRDGenerator.java:154)
	at io.fabric8.crd.generator.apt.CustomResourceAnnotationProcessor.process(CustomResourceAnnotationProcessor.java:54)
	at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:142)
	... 25 more

The CPU utilization remains over 200% even after the "Server will not be restarted" message.

It would be great if it would be possible to open Keycloak in VSCode.

Extension version: 1.10.0
VS Code version: Code 1.70.2 (e4503b30fc78200f846c62cf8091b76ff5547662, 2022-08-16T05:36:25.715Z)
OS version: Linux x64 5.17.11-300.fc36.x86_64
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz (12 x 2875)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_renderer: enabled_on video_decode: disabled_software video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	10, 9, 5
Memory (System)	30.99GB (0.74GB free)
Process Argv	--unity-launch --crash-reporter-id ef8565c1-6ec2-4c0e-8977-6c25d39f07a9
Screen Reader	no
VM	0%
DESKTOP_SESSION	plasmax11
XDG_CURRENT_DESKTOP	KDE
XDG_SESSION_DESKTOP	plasmax11
XDG_SESSION_TYPE	x11

[snjeza]

@hmlnarik You may want to take a look at #2537 (comment)

Perhaps the following exception is related:

This exception is an upstream kubernetes-client issue - See https://github.com/fabric8io/kubernetes-client/blob/v5.12.2/crd-generator/api/src/main/java/io/fabric8/crd/generator/AbstractJsonSchema.java#L618
You can ignore it.

[hmlnarik]

@snjeza Thank you for the hint.

The workflow I use sadly does not allow me to easily exclude other than non-java files, so including only a few selected modules is not possible for me.

Interestingly enough, the Netbeans Java Language Server opens the whole project in a few minutes without any tweaks in settings, with working symbol lookup, debugging etc. I'd love to use the recommended extensions like vscode-java, but the current behaviour does not allow me to; thus it rather seems to indicate an issue in vscode-java extension which could be investigated and improved?

Feel free to close this issue if it is not the case.

[snjeza]

@hmlnarik You can try the following:

• set

"java.jdt.ls.vmargs": "-Dsun.misc.URLClassPath.disableJarChecking=true -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx4G -Xms512m",
"java.import.exclusions": [
        "**/node_modules/**",
        "**/.metadata/**",
        "**/archetype-resources/**",
        "**/META-INF/maven/**",
        "**/themes/**",
    ],

to your settings.json

git clone git@github.com:keycloak/keycloak.git
cd keycloak
./mvnw clean verify
code .

[hmlnarik]

Thank you for the hint.

After following the suggestion, I am afraid I cannot report success. The IDE keeps reporting Building n% and Building [Done] messages after over 2 6 hours of indexing. When I tried "Go to symbol in Workspace", it returns results only in roughly 50% of cases.

If there is anything else I could try, please let me know.

EDIT: I ran Java: Clean Java Language Server workspace before opening the keycloak project.