bfreitastgtg opened a new issue, #3240:
URL: https://github.com/apache/logging-log4j2/issues/3240
## Description
Trying to use a logger in a class annotated with `@Plugin` from
`org.apache.logging.log4j.core.config.plugins` throws an exception. The same
problem does not happen on versions 2.23.1, 2.24.0 and 2.24.1.
## Configuration
**Version:** 2.24.2
**Operating system:** linux
**JDK:** Amazon Correto, 21
## Logs
```
2024-11-26T08:33:59.000998374Z main ERROR Unable to create Lookup for
myplugin java.lang.IllegalArgumentException:
java.lang.ExceptionInInitializerError
at
org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:192)
at
org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:90)
at
org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:109)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:137)
at
org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:32)
at
org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:77)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:265)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:224)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:142)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:125)
at
org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:119)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:148)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:46)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:138)
at
org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:136)
at
org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:58)
at
org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46)
at
org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:32)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:432)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:457)
(...)
Caused by: java.lang.ExceptionInInitializerError
at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native
Method)
at
java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160)
at
java.base/jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:300)
at
java.base/jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:103)
at
java.base/jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200)
at
java.base/java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549)
at
java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at
java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
at
org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:188)
... 20 more
Caused by: java.lang.NullPointerException: messageFactory
at java.base/java.util.Objects.requireNonNull(Objects.java:259)
at
org.apache.logging.log4j.core.util.internal.InternalLoggerRegistry.computeIfAbsent(InternalLoggerRegistry.java:135)
at
org.apache.logging.log4j.core.LoggerContext.getLogger(LoggerContext.java:530)
at
org.apache.logging.log4j.core.LoggerContext.getLogger(LoggerContext.java:503)
at
org.apache.logging.log4j.core.LoggerContext.getLogger(LoggerContext.java:65)
at
org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:49)
at
org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:32)
at
org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:52)
at
org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:32)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:432)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:457)
(...)
... 29 more
```
## Reproduction
The code below used to run fine, then after upgrading to 2.24.2 it started
throwing on application startup. Getting rid of the `LOGGER` variable "fixes"
the problem.
```
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.lookup.StrLookup;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Plugin(name = "MyPlugin", category = StrLookup.CATEGORY)
public class MyPlugin implements StrLookup {
private static final Logger LOGGER =
LoggerFactory.getLogger(MyPlugin.class);
static {
LOGGER.info("Log stuff");
}
@Override
public String lookup(String key) {
return "";
}
@Override
public String lookup(LogEvent event, String key) {
return "";
}
}
```
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