com.athena.peacock.common.core.action.ConfigAction.java Source code

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Here is the source code for com.athena.peacock.common.core.action.ConfigAction.java

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/* 
 * Athena Peacock Project - Server Provisioning Engine for IDC or Cloud
 * 
 * Copyright (C) 2013 Open Source Consulting, Inc. All rights reserved by Open Source Consulting, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Revision History
 * Author         Date            Description
 * ---------------   ----------------   ------------
 * Sang-cheon Park   2013. 10. 10.      First Draft.
 */
package com.athena.peacock.common.core.action;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Assert;

import com.athena.peacock.common.core.action.support.Property;

/**
 * <pre>
 * 
 * </pre>
 * @author Sang-cheon Park
 * @version 1.0
 */
public class ConfigAction extends Action {

    private static final Logger logger = LoggerFactory.getLogger(ConfigAction.class);

    private static final long serialVersionUID = 1L;

    /** ?  ?  ? */
    private String fileName;

    /** ? ? ?  ?  ? */
    private List<Property> properties;

    public ConfigAction(int sequence) {
        super(sequence);
    }

    /**
     * @return the fileName
     */
    public String getFileName() {
        return fileName;
    }

    /**
     * @param fileName the fileName to set
     */
    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    /**
     * @return the properties
     */
    public List<Property> getProperties() {
        return properties;
    }

    /**
     * @param properties the properties to set
     */
    public void setProperties(List<Property> properties) {
        this.properties = properties;
    }

    /* (non-Javadoc)
     * @see com.athena.peacock.common.core.action.Action#perform()
     */
    @Override
    public String perform() {
        Assert.notNull(fileName, "filename cannot be null.");
        Assert.notNull(properties, "properties cannot be null.");

        File file = new File(fileName);

        Assert.isTrue(file.exists(), fileName + " does not exist.");
        Assert.isTrue(file.isFile(), fileName + " is not a file.");

        logger.debug("[{}] file's configuration will be changed.", fileName);

        try {
            String fileContents = IOUtils.toString(file.toURI());

            for (Property property : properties) {
                logger.debug("\"${{}}\" will be changed to \"{}\".", property.getKey(),
                        property.getValue().replaceAll("\\\\", ""));
                fileContents = fileContents.replaceAll("\\$\\{" + property.getKey() + "\\}", property.getValue());
            }

            FileOutputStream fos = new FileOutputStream(file);
            IOUtils.write(fileContents, fos);
            IOUtils.closeQuietly(fos);
        } catch (IOException e) {
            logger.error("IOException has occurred.", e);
        }

        return null;
    }

}
//end of ConfigAction.java