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package cn.lkk.web.util;

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

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

/**
 * @author wangfujun
 * @date 2018/12/18
 */
public class LogUtil {

    private static Map, Logger> logMap = new HashMap, Logger>();

    public static void log(Class clazz, String msg) {
        Logger log = findLogger(clazz);
        writeLog(log, msg, null);
    }

    public static void log(Class clazz, String msg, Throwable t) {
        Logger log = findLogger(clazz);
        writeLog(log, msg, t);
    }

    private static void writeLog(Logger log, String msg, Throwable t) {
        if (log.isDebugEnabled()) {
            if (null == t) {
                log.debug(msg);
            } else {
                log.debug(msg, t);
            }
        } else if (log.isInfoEnabled()) {
            if (null == t) {
                log.info(msg);
            } else {
                log.info(msg, t);
            }
        } else if (log.isWarnEnabled()) {
            if (null == t) {
                log.warn(msg);
            } else {
                log.warn(msg, t);
            }
        } else if (log.isErrorEnabled()) {
            if (null == t) {
                log.error(msg);
            } else {
                log.error(msg, t);
            }
        } else if (log.isTraceEnabled()) {
            if (null == t) {
                log.trace(msg);
            } else {
                log.trace(msg, t);
            }
        }
    }

    private static Logger findLogger(Class clazz) {
        if (logMap.containsKey(clazz)) {
            return logMap.get(clazz);
        }
        final Logger log = LoggerFactory.getLogger(clazz);
        logMap.put(clazz, log);
        return log;
    }
}