After updating log4j from 2.17.1 to 2.20.0 for a RCP application (OSGI!) we are getting lot's of exeptions on start-up.
For some years we were happily using the workrounds for OSGI mentioned in
- Log4j2 api cannot find Log4j2 core in OSGi environment
- https://craftsmen.nl/getting-log4j2-to-work-in-an-osgi-context/
Looking at the log4j2 source code in github, especially the new OsgiServiceLocator.java I can see that there are substantial changes regarding OSGI.
Unfortunately I cannot find any information about how to get this working for an RCP application.
Any ideas?
Exceptions:
ERROR StatusLogger Unable to load OSGI services for service class org.apache.logging.log4j.spi.Provider
java.lang.NullPointerException: Cannot invoke "org.osgi.framework.BundleContext.getServiceReferences(java.lang.Class, String)" because "ctx" is null
at org.apache.logging.log4j.util.OsgiServiceLocator.loadServices(OsgiServiceLocator.java:61)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:92)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:77)
at org.apache.logging.log4j.util.ProviderUtil.<init>(ProviderUtil.java:67)
at org.apache.logging.log4j.util.ProviderUtil.lazyInit(ProviderUtil.java:145)
at org.apache.logging.log4j.util.ProviderUtil.hasProviders(ProviderUtil.java:129)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:90)
ERROR StatusLogger Unable to load OSGI services for service interface org.apache.logging.log4j.core.util.ContextDataProvider
java.lang.NullPointerException: Cannot invoke "org.osgi.framework.BundleContext.getServiceReferences(java.lang.Class, String)" because "ctx" is null
at org.apache.logging.log4j.util.OsgiServiceLocator.loadServices(OsgiServiceLocator.java:61)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:92)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:77)
at org.apache.logging.log4j.core.impl.ThreadContextDataInjector.getServiceProviders(ThreadContextDataInjector.java:77)
at org.apache.logging.log4j.core.impl.ThreadContextDataInjector.<clinit>(ThreadContextDataInjector.java:64)
at org.apache.logging.log4j.core.impl.ThreadContextDataInjector$ForDefaultThreadContextMap.<init>(ThreadContextDataInjector.java:93)
at org.apache.logging.log4j.core.impl.ContextDataInjectorFactory.createDefaultInjector(ContextDataInjectorFactory.java:91)
at org.apache.logging.log4j.core.impl.ContextDataInjectorFactory.createInjector(ContextDataInjectorFactory.java:71)
at org.apache.logging.log4j.core.lookup.ContextMapLookup.<init>(ContextMapLookup.java:34)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:189)
at org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:86)
at org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:105)
at org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:135)
at org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:32)
at org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:74)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:254)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:218)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:136)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:123)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:117)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:150)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:599)
ERROR StatusLogger Unable to load OSGI services for service interface org.apache.logging.log4j.core.util.WatchEventService
java.lang.NullPointerException: Cannot invoke "org.osgi.framework.BundleContext.getServiceReferences(java.lang.Class, String)" because "ctx" is null
at org.apache.logging.log4j.util.OsgiServiceLocator.loadServices(OsgiServiceLocator.java:61)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:92)
at org.apache.logging.log4j.util.ServiceLoaderUtil.loadServices(ServiceLoaderUtil.java:77)
at org.apache.logging.log4j.core.util.WatchManager.<init>(WatchManager.java:137)
at org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:142)
at org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:32)
at org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:74)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:254)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:218)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:136)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:123)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:117)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:150)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:599)
