com.athena.peacock.engine.action.ConfigurationAction.java Source code

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Here is the source code for com.athena.peacock.engine.action.ConfigurationAction.java

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/*
 * Copyright 2012 the original author or authors.
 *
 * 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.
 *
 * Revision History
 * Author         Date            Description
 * ---------------   ----------------   ------------
 * Ji-Woong Choi   2012. 10. 5.      First Draft.
 */
package com.athena.peacock.engine.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.engine.core.Property;

/**
 * <pre>
 *   ?   ??  ??    . 
 * </pre>
 * 
 * @author Ji-Woong Choi
 * @version 1.0
 */
public class ConfigurationAction implements Action {

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

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

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

    public ConfigurationAction(String fileName, List<Property> properties) {
        this.fileName = fileName;
        this.properties = properties;
    }

    /* (non-Javadoc)
     * @see com.athena.peacock.engine.action.Action#perform()
     */
    @Override
    public void 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);
        }
    }//end of perform()

}
//end of Configuration.java