com.atomikos.logging.LoggerFactory Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2020 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.logging;
public final class LoggerFactory {
private LoggerFactory() {
}
static LoggerFactoryDelegate loggerFactoryDelegate;
public static final Logger createLogger(Class clazz) {
return loggerFactoryDelegate.createLogger(clazz);
}
static void setLoggerFactoryDelegate(LoggerFactoryDelegate loggerFactoryDelegate) {
LoggerFactory.loggerFactoryDelegate = loggerFactoryDelegate;
}
static {
String cname = null;
//let's try with
try {
Class.forName("org.slf4j.impl.StaticLoggerBinder");
cname = "com.atomikos.logging.Slf4JLoggerFactoryDelegate";
} catch (Throwable ex) {
System.out.println("No org.slf4j.impl.StaticLoggerBinder found in ClassPath, trying with log4j2...");
}
if(cname==null){
try {
Class.forName("org.apache.logging.log4j.Logger");
cname = "com.atomikos.logging.Log4j2LoggerFactoryDelegate";
} catch (Throwable ex) {
//don't print stackTrace - cf bug 118228
System.out.println("No org.apache.logging.log4j.Logger found found in ClassPath, trying with log4j...");
}
}
if(cname==null){
try {
Class.forName("org.apache.log4j.Logger");
cname = "com.atomikos.logging.Log4JLoggerFactoryDelegate";
} catch (Throwable ex) {
System.out.println("No org.apache.log4j.Logger found found in ClassPath, falling back default...");
}
}
try {
if (cname != null) {
Class loggerClass = (Class) Class.forName(cname.trim(), true, LoggerFactory.class.getClassLoader());
loggerFactoryDelegate = (LoggerFactoryDelegate) loggerClass.newInstance();
} else {
fallbackToDefault();
}
} catch (Throwable ex) {
// ignore - if we get here, some issue prevented the logger class
// from being loaded.
// maybe a ClassNotFound or NoClassDefFound or similar. Just use
// j.u.l
fallbackToDefault();
}
Logger logger = createLogger(LoggerFactory.class);
logger.logDebug("Using " + loggerFactoryDelegate + " for logging.");
}
private static void fallbackToDefault() {
setLoggerFactoryDelegate(new JULLoggerFactoryDelegate());
}
}