/*
 * Copyright 2015 Naver Corp.
 * 
 * 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.navercorp.nbasearc.confmaster.logger;

import static org.apache.log4j.Level.*;

import org.apache.log4j.Level;

public class LogHistoryHolder {

    private LogHistory logHistory = new LogHistory();
    
    public LogHistoryHolder() {
    }

    public LogHistory popLogHistory() {
        try {
            return logHistory;
        } finally {
            logHistory = new LogHistory();
        }
    }
    
    public LogHistory getLogHistory() {
        return logHistory;
    }

    public void pushLogHistory(LogHistory logHistory) {
        this.logHistory = logHistory;
    }

    public void log(Level level, String log) {
        try {
            logHistory.log(level, log);
        } catch (Exception e) {
            if (logHistory == null) {
                logHistory = new LogHistory();
            }
            logHistory.log(ERROR, "Exception occur while logging.", e);
        }
    }

    public void log(Level level, String log, Throwable e) {
        try {
            logHistory.log(level, log, e);
        } catch (Exception exception) {
            if (logHistory == null) {
                logHistory = new LogHistory();
            }
            logHistory.log(ERROR, "Exception occur while logging.", exception);
        }
    }
    
    public void flush(Level level) {
        try {
            logHistory.flush(level);
        } catch (Exception e) {
            if (logHistory == null) {
                logHistory = new LogHistory();
            }
            logHistory.log(ERROR, "Exception occur while flush logs.", e);
        }
    }

    public void log(LogHistory prevLogHistory) {
        logHistory.log(prevLogHistory);
    }

}
