package com.tinkerpop.rexster.util;
import com.sun.jersey.server.impl.cdi.CDIComponentProviderFactoryInitializer;
import com.sun.jersey.server.impl.ejb.EJBComponentProviderFactoryInitilizer;
import com.sun.jersey.server.impl.managedbeans.ManagedBeanComponentProviderFactoryInitilizer;
import org.apache.log4j.Logger;
import org.apache.log4j.Priority;
import java.text.MessageFormat;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
/**
* A JULI (java.util.logging) handler that redirects java.util.logging messages to Log4J
* http://wiki.apache.org/myfaces/Trinidad_and_Common_Logging
* <br>
* https://github.com/joshuadavis/yajul/blob/master/core/src/main/java/org/yajul/log/JuliToLog4jHandler.java
*/
public class JuliToLog4jHandler extends Handler {
/**
* List of loggers from Jersey/Grizzly that Rexster ignores in debug mode as they are not used in the
* application.
*/
private Set<String> loggersRexsterSuppresses = new HashSet<String>() {{
add(CDIComponentProviderFactoryInitializer.class.getCanonicalName());
add(EJBComponentProviderFactoryInitilizer.class.getCanonicalName());
add(ManagedBeanComponentProviderFactoryInitilizer.class.getCanonicalName());
}};
public void publish(LogRecord record) {
if (!loggersRexsterSuppresses.contains(record.getLoggerName())) {
org.apache.log4j.Logger log4j = getTargetLogger(record.getLoggerName());
Priority priority = toLog4j(record.getLevel());
log4j.log(priority, toLog4jMessage(record), record.getThrown());
}
}
static Logger getTargetLogger(String loggerName) {
return Logger.getLogger(loggerName);
}
public static Logger getTargetLogger(Class clazz) {
return getTargetLogger(clazz.getName());
}
private String toLog4jMessage(LogRecord record) {
String message = record.getMessage();
// Format message
try {
Object parameters[] = record.getParameters();
if (parameters != null && parameters.length != 0) {
// Check for the first few parameters ?
if (message.indexOf("{0}") >= 0 ||
message.indexOf("{1}") >= 0 ||
message.indexOf("{2}") >= 0 ||
message.indexOf("{3}") >= 0) {
message = MessageFormat.format(message, parameters);
}
}
}
catch (Exception ex) {
// ignore Exception
}
return message;
}
private org.apache.log4j.Level toLog4j(Level level) {
LogLevel logLevel = LogLevel.toLogLevel(level);
switch(logLevel)
{
case ERROR:
return org.apache.log4j.Level.ERROR;
case WARN:
return org.apache.log4j.Level.WARN;
case INFO:
return org.apache.log4j.Level.INFO;
case DEBUG:
return org.apache.log4j.Level.DEBUG;
case TRACE:
return org.apache.log4j.Level.TRACE;
case OFF:
default:
return org.apache.log4j.Level.OFF;
}
}
@Override
public void flush() {
// nothing to do
}
@Override
public void close() {
// nothing to do
}
}