[org.eclipse.jetty.ee8.webapp.Configurations] Unable to get known Configuration

[gpfeifer]

Jetty version(s)
Jetty 12.0.15

Jetty Environment
ee8

Java version/vendor (use: java -version)
openjdk version "21.0.5" 2024-10-15
OpenJDK Runtime Environment (build 21.0.5+11-Ubuntu-1ubuntu122.04)
OpenJDK 64-Bit Server VM (build 21.0.5+11-Ubuntu-1ubuntu122.04, mixed mode, sharing)

OS type/version
22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Nov 6 17:42:15 UTC 2

Description
I'm running this JARs inside an OSGI container:

• jetty-deploy-12.0.15.jar
• jetty-ee-12.0.15.jar
• jetty-ee8-nested-12.0.15.jar
• jetty-ee8-osgi-boot-12.0.15.jar
• jetty-ee8-security-12.0.15.jar
• jetty-ee8-servlet-12.0.15.jar
• jetty-ee8-servlets-12.0.15.jar
• jetty-ee8-webapp-12.0.15.jar
• jetty-http-12.0.15.jar
• jetty-io-12.0.15.jar
• jetty-jmx-12.0.15.jar
• jetty-jndi-12.0.15.jar
• jetty-osgi-12.0.15.jar
• jetty-plus-12.0.15.jar
• jetty-security-12.0.15.jar
• jetty-server-12.0.15.jar
• jetty-servlet-api-4.0.6
• jetty-session-12.0.15.jar
• jetty-util-12.0.15.jar
• jetty-xml-12.0.15.jar

I get this warning at startup: [org.eclipse.jetty.ee8.webapp.Configurations] Unable to get known Configuration

How to reproduce?
Run the bundles in an OSGi container

Questions
What is the reason for this warning? How can I avoid this warning?

Where can I find the sources for org.eclipse.jetty.ee8.webapp.Configurations? No sources here:
https://github.com/jetty/jetty.project/tree/jetty-12.0.x/jetty-ee8/jetty-ee8-webapp/src/main

[joakime]

I get this warning at startup: [org.eclipse.jetty.ee8.webapp.Configurations] Unable to get known Configuration

You need add the ServiceLoader support to your OSGi environment.

OSGi, by default, doesn't support ServiceLoader for some odd reason.
A ton of features in Jakarta and Servlet and Web Containers require ServiceLoader to function properly.

https://docs.osgi.org/specification/osgi.enterprise/7.0.0/service.loader.html
https://blog.osgi.org/2013/02/javautilserviceloader-in-osgi.html

Aries Spy-Fly is a popular ServiceLoader support jar for OSGi.

Where can I find the sources for org.eclipse.jetty.ee8.webapp.Configurations? No sources here:
https://github.com/jetty/jetty.project/tree/jetty-12.0.x/jetty-ee8/jetty-ee8-webapp/src/main

Most of jetty-ee8 tree is generated at build time from the jetty-ee9 tree.

[gpfeifer]

I'm already using this form Aries:

org.apache.aries.spifly.dynamic.bundle-1.3.7.jar

[gpfeifer]

I have reduced my OSGi based service, so that it contains only one simple 'Hello World' Servlet. I still get this warning, but the servlet works. Attached you will find the log with log level FINEST.

Here is the relevant part:
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.osgi.AbstractContextProvider] BundleContextProvider ignoring bundle com.csc.dip.vpms.server.rest.admin with Web-ContextPath set
[2024-12-06 15:21:03] [FINEST ] [org.eclipse.jetty.osgi.util.BundleFileLocatorHelperFactory] IGNORED
[2024-12-06 15:21:03] [FINEST ] [org.eclipse.jetty.osgi.util.BundleFileLocatorHelperFactory] IGNORED
[2024-12-06 15:21:03] [FINEST ] [org.eclipse.jetty.osgi.util.BundleFileLocatorHelperFactory] IGNORED
[2024-12-06 15:21:03] [INFO ] [org.eclipse.jetty.deploy.DeploymentManager] addApp: App@616598cf[ee8,null,/media/gpf/data/github.dxc/vpms-production/vpms-server/vsrv-deliver/target/VPMS-XE-Server-24.4-20241205_1754/server/vpms-server-data/org.eclipse.osgi/136/0/bundleFile]
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.deploy.DeploymentManager] Executing Node Node[deploying]
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.deploy.AppLifeCycle] Calling org.eclipse.jetty.osgi.OSGiDeployer for App@616598cf[ee8,null,/media/gpf/data/github.dxc/vpms-production/vpms-server/vsrv-deliver/target/VPMS-XE-Server-24.4-20241205_1754/server/vpms-server-data/org.eclipse.osgi/136/0/bundleFile]
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.AbstractLifeCycle] STARTING oejur.ResourceFactoryInternals$LifeCycle@7f17a5bc{STOPPED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.AbstractLifeCycle] STARTED @1960ms oejur.ResourceFactoryInternals$LifeCycle@7f17a5bc{STARTED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] Server@676b58e added {oejur.ResourceFactoryInternals$LifeCycle@7f17a5bc{STARTED},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] Server@676b58e added {org.eclipse.jetty.util.resource.ResourceFactory$2@345d9a6c,POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] CoreContextHandler@38a53b99 added {SymlinkAllowedResourceAliasChecker@5df81cfe{base=null,protected=[]},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] CoreContextHandler@38a53b99 added {oeje8n.ContextHandler$CoreContextHandler$CoreToNestedHandler@7ba3db8e{STOPPED},AUTO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] CoreContextHandler@950352793 added {oeje8n.ContextHandler@33127804.,MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] WebAppContext@856848388 added {oeje8n.ContextHandler$CoreContextHandler@38a53b99{ROOT,/,b=null,a=STOPPED,h=oeje8n.ContextHandler$CoreContextHandler$CoreToNestedHandler@7ba3db8e{STOPPED}},UNMANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] WebAppContext@856848388 added {org.eclipse.jetty.util.DecoratedObjectFactory[decorators=0],POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@784561900 added {oeje8n.SessionHandler$CoreSessionManager@ece5b4d{STOPPED},AUTO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@784561900 added {org.eclipse.jetty.ee8.nested.SessionHandler$CookieConfig@732f8260[name=null,domain=null,path=null,max-age=-1,secure=false,http-only=false,same-site=null,comment=null],POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@784561900 added {[],POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@784561900 added {[],POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@784561900 added {[],POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] WebAppContext@33127804 added {oeje8n.SessionHandler@2ec376ec{STOPPED},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] ConstraintSecurityHandler@1813568076 added {org.eclipse.jetty.util.component.DumpableCollection@61921a13,POJO}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] SessionHandler@2ec376ec added {oeje8s.ConstraintSecurityHandler@6c18da4c{STOPPED},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] ConstraintSecurityHandler@6c18da4c added {oeje8s.ServletHandler@152b1018{STOPPED},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.util.component.ContainerLifeCycle] WebAppContext@33127804 added {oeje8s.ErrorPageErrorHandler@13feb30b{STOPPED},MANAGED}
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.ee8.osgi.boot.EE8Activator] Core classloader = org.eclipse.osgi.internal.loader.EquinoxClassLoader@40a3ac10[org.eclipse.jetty.osgi:12.0.15(id=100)]
[2024-12-06 15:21:03] [FINEST ] [org.eclipse.jetty.osgi.util.BundleClassLoaderHelperFactory] IGNORED
[2024-12-06 15:21:03] [FINE ] [org.eclipse.jetty.ee8.osgi.boot.EE8Activator] Environment classloader = org.eclipse.jetty.osgi.util.OSGiClassLoader@119c6014
[2024-12-06 15:21:03] [WARNING] [org.eclipse.jetty.ee8.webapp.Configurations] Unable to get known Configuration

server-log.0.log

[janbartel]

@gpfeifer it is very likely that you do not have all the necessary bundles deployed. Spifly requires asm and I don't see that in the list of your deployed bundles. Try using your osgi container's tools to dump the deployed bundles and their status.

You can also maybe have a look at the ee9 sources (ee8 being automatically generated from ee9 srcs) for our osgi unit tests to see which bundles we deploy for the various tests: https://github.com/jetty/jetty.project/tree/jetty-12.0.x/jetty-ee9/jetty-ee9-osgi/test-jetty-ee9-osgi/src/test/java/org/eclipse/jetty/ee9/osgi/test