/*
* Copyright 2012 Jason Miller
*
* 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 jj.logging;
import java.lang.annotation.Annotation;
import java.util.Map;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* produces Loggers for a given LoggedEvent descendent
*
* @author jason
*
*/
@Singleton
class Loggers {
private final Map<Class<? extends Annotation>, Logger> loggers;
@Inject
Loggers(final Map<Class<? extends Annotation>, Logger> loggers) {
this.loggers = loggers;
}
Logger findLogger(LoggedEvent event) {
Logger result = null;
if (event instanceof NamesLogger) {
result = LoggerFactory.getLogger(((NamesLogger)event).loggerName());
} else {
Class<?> eventClass = event.getClass();
for (Class<? extends Annotation> annotation : loggers.keySet()) {
if (eventClass.isAnnotationPresent(annotation)) {
result = loggers.get(annotation);
break;
}
}
}
assert result != null : "No logger registered for LoggedEvent " + event;
return result;
}
}