com.liferay.servermanager.executor.OutputLogExecutor.java Source code

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Here is the source code for com.liferay.servermanager.executor.OutputLogExecutor.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.servermanager.executor;

import com.liferay.portal.kernel.json.JSONObject;
import com.liferay.portal.kernel.util.FastDateFormatFactoryUtil;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.PropsKeys;
import com.liferay.portal.kernel.util.PropsUtil;
import com.liferay.portal.kernel.util.ServerDetector;
import com.liferay.portal.kernel.util.StreamUtil;
import com.liferay.servermanager.util.JSONKeys;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;

import java.text.Format;

import java.util.Date;
import java.util.Queue;

import javax.servlet.http.HttpServletRequest;

/**
 * @author Jonathan Potter
 * @author Brian Wing Shun Chan
 */
public class OutputLogExecutor extends BaseExecutor {

    @Override
    public void executeRead(HttpServletRequest request, JSONObject responseJSONObject, Queue<String> arguments)
            throws Exception {

        File logFile = getLogFile();

        if ((logFile == null) || !logFile.exists()) {
            return;
        }

        InputStream inputStream = new FileInputStream(logFile);

        int offset = GetterUtil.getInteger(arguments.poll());

        inputStream.skip(offset);

        OutputStream outputStream = new ByteArrayOutputStream();

        StreamUtil.transfer(inputStream, outputStream);

        responseJSONObject.put(JSONKeys.OUTPUT, outputStream.toString());
    }

    protected String getLiferayDateString() {
        return getTomcatDateString();
    }

    protected File getLogFile() {
        File logFile = null;

        if (ServerDetector.isJBoss()) {
            File logDirectory = new File(System.getProperty("jboss.server.log.dir"));

            logFile = new File(logDirectory, "server.log");
        } else {
            logFile = new File(
                    PropsUtil.get(PropsKeys.LIFERAY_HOME) + "/logs/liferay." + getLiferayDateString() + ".log");
        }

        return logFile;
    }

    protected String getTomcatDateString() {
        Date date = new Date();

        return _simpleDateFormat.format(date);
    }

    private static Format _simpleDateFormat = FastDateFormatFactoryUtil.getSimpleDateFormat("yyyy-MM-dd");

}