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Merge pull request #2375 from metamx/moreLog4jChecks 

Add check for log4j-core in Log4jShutterDownerModule
This commit is contained in:
Xavier Léauté 2016-02-02 17:06:50 -08:00
parent 57a3d97837 5111fd52f2
commit b90cee5d0d
1 changed files with 8 additions and 1 deletions
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9
server/src/main/java/io/druid/initialization/Log4jShutterDownerModule.java
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@ -45,8 +45,15 @@ public class Log4jShutterDownerModule implements Module
// This makes the shutdown run pretty darn near last.
try {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
if(loader == null) {
loader = getClass().getClassLoader();
}
// Reflection to try and allow non Log4j2 stuff to run. This acts as a gateway to stop errors in the next few lines
final Class<?> logManagerClazz = Class.forName("org.apache.logging.log4j.LogManager");
// In log4j api
final Class<?> logManagerClazz = Class.forName("org.apache.logging.log4j.LogManager", false, loader);
// In log4j core
final Class<?> callbackRegistryClazz = Class.forName("org.apache.logging.log4j.core.util.ShutdownCallbackRegistry", false, loader);
final LoggerContextFactory contextFactory = LogManager.getFactory();
if (!(contextFactory instanceof Log4jContextFactory)) {