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slf4j to JBoss Logging Adapter

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/*
 * JBoss, Home of Professional Open Source.
 *
 * Copyright 2020 Red Hat, Inc.
 *
 * 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.slf4j;

import java.util.HashMap;
import java.util.Map;

import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;

/**
 * JBossLoggerFactory is an implementation of {@link ILoggerFactory} returning
 * the appropriate named {@link JBossLoggerAdapter} instance.
 * 
 * Adapted from the corresponding slf4j-log4j adapter.
 * 
 * @author Dimitris Andreadis
 * @version $Revision: 2784 $
 */
public class JBossLoggerFactory implements ILoggerFactory
{
   /** JBossLoggerAdapter cache */
   Map loggerMap;

   public JBossLoggerFactory()
   {
      loggerMap = new HashMap();
   }

   /**
    * @see org.slf4j.ILoggerFactory#getLogger(java.lang.String)
    */
   public Logger getLogger(String name)
   {
      Logger slf4jLogger = null;
    
      // protect against concurrent access of loggerMap
      synchronized (this)
      {
         slf4jLogger = (Logger) loggerMap.get(name);
        
         // no logger found
         if (slf4jLogger == null)
         {
            // create a new jboss logger
            org.jboss.logging.Logger jbossLogger;
            jbossLogger = org.jboss.logging.Logger.getLogger(name);
            
            // wrap it with an adapter
            slf4jLogger = new JBossLoggerAdapter(jbossLogger);
        
            // put it in the map
            loggerMap.put(name, slf4jLogger);
         }
      }
      return slf4jLogger;
   }
}