/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.seam.solder.logging;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;
import org.jboss.logging.BasicLogger;
import org.jboss.logging.Logger;
import org.jboss.seam.solder.messages.Message;
import org.jboss.seam.solder.messages.MessageBundleInvocationHandler;
/**
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
public class MessageLoggerInvocationHandler extends MessageBundleInvocationHandler {
private final Logger logger;
public MessageLoggerInvocationHandler(final Class<?> type, final String category) {
this(type.getAnnotation(MessageLogger.class), category);
}
private MessageLoggerInvocationHandler(final MessageLogger messageLogger, final String category) {
super(messageLogger.projectCode());
logger = Logger.getLogger(category);
}
public Object invoke(final Object proxy, final Method method, Object[] args) throws Throwable {
final Message message = method.getAnnotation(Message.class);
if (message == null) {
// nothing to do...
return null;
}
final Annotation[][] parameterAnnotations = method.getParameterAnnotations();
final Log logMessage = method.getAnnotation(Log.class);
if (logMessage != null) {
try {
// See if it's a basic logger method
if (method.getDeclaringClass().equals(BasicLogger.class)) {
// doesn't cover overrides though!
return method.invoke(logger, args);
}
// it's a log message
final Logger.Level level = logMessage.level();
if (logger.isEnabled(level)) {
String formatString = getFormatString(message);
if (formatString == null) {
return null;
}
ArrayList<Object> newArgs = new ArrayList<Object>();
Throwable cause = extractCause(parameterAnnotations, args, newArgs);
final Message.Format format = message.format();
switch (format) {
case PRINTF: {
logger.logf(level, cause, formatString, newArgs.toArray());
return null;
}
case MESSAGE_FORMAT: {
logger.logv(level, cause, formatString, newArgs.toArray());
return null;
}
default: {
return null;
}
}
}
} catch (Throwable ignored) {
}
} else {
return super.invoke(proxy, method, args);
}
return null;
}
}