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Quickbooks API Helper Project for OAuth2

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/*******************************************************************************
 * Copyright (c) 2017 Intuit
 *
 * 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 com.intuit.oauth2.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Wrapper class for logger
 * 
 * @author dderose
 *
 */
public final class LoggerImpl {
	
	private volatile Logger slf4jLogger;

	private static Logger sInstance;

	public static Logger getInstance() {
		if (null == sInstance) {
			sInstance = new LoggerImpl().getLogger();
			
		}
		return sInstance;
	}

	//Prevent instantiation
	private LoggerImpl() {}
	
	public Logger getLogger() {
	    if (null == slf4jLogger) {
	        synchronized (this) {
	            if (null == slf4jLogger) {
	            	slf4jLogger = LoggerFactory.getLogger("com.intuit.oauth2");
	            }
	        }
    	}
	    return slf4jLogger;
	}

}