com.impetus.ankush.agent.action.impl.PropertyFileManipulator.java Source code

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Here is the source code for com.impetus.ankush.agent.action.impl.PropertyFileManipulator.java

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/*******************************************************************************
 * ===========================================================
 * Ankush : Big Data Cluster Management Solution
 * ===========================================================
 * 
 * (C) Copyright 2014, by Impetus Technologies
 * 
 * This is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License (LGPL v3) as
 * published by the Free Software Foundation;
 * 
 * This software 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.
 * 
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this software; if not, write to the Free Software Foundation, 
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ******************************************************************************/
package com.impetus.ankush.agent.action.impl;

import java.io.File;

import org.apache.commons.configuration.PropertiesConfiguration;

import com.impetus.ankush.agent.action.Manipulatable;

public class PropertyFileManipulator implements Manipulatable {

    /**
     * Edits the conf value.
     * 
     * @param file
     *            the file
     * @param propertyName
     *            the property name
     * @param newPropertyValue
     *            the new property value
     * @return true, if successful
     */
    @Override
    public boolean editConfValue(String file, String propertyName, String newPropertyValue) {
        boolean status = false;
        try {
            // read conf file
            File confFile = new File(file);

            if (!confFile.exists()) {
                System.err.println("File " + file + " does not exists.");
                status = false;
            }
            PropertiesConfiguration props = new PropertiesConfiguration(file);
            props.setProperty(propertyName, newPropertyValue);
            props.getLayout().setSeparator(propertyName, "=");
            props.save();
            status = true;
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
        return status;
    }

    /**
     * Delete conf value.
     * 
     * @param file
     *            the file
     * @param propertyName
     *            the property name
     * @return true, if successful
     */
    @Override
    public boolean deleteConfValue(String file, String propertyName) {
        boolean status = false;
        try {
            // read conf file
            File confFile = new File(file);

            if (!confFile.exists()) {
                System.err.println("File " + file + " does not exists.");
                status = false;
            }
            PropertiesConfiguration props = new PropertiesConfiguration(file);
            props.getLayout().setSeparator(propertyName, "=");
            if (props.getProperty(propertyName) != null) {
                props.clearProperty(propertyName);
                props.save();
                status = true;
            }
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
        return status;

    }

    /**
     * Write conf value.
     * 
     * @param file
     *            the file
     * @param propertyName
     *            the property name
     * @param propertyValue
     *            the property value
     * @return true, if successful
     */
    @Override
    public boolean writeConfValue(String filePath, String propertyName, String propertyValue) {
        return editConfValue(filePath, propertyName, propertyValue);
    }

    /**
     * Read conf value.
     * 
     * @param file
     *            the file
     * @param propertyName
     *            the property name
     * @return the string
     */
    @Override
    public String readConfValue(String file, String propertyName) {
        String confValue = null;
        try {
            // read conf file
            File confFile = new File(file);

            if (!confFile.exists()) {
                System.err.println("File " + file + " does not exists.");
                return confValue;
            }
            PropertiesConfiguration props = new PropertiesConfiguration(file);
            confValue = props.getProperty(propertyName).toString();
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
        return confValue;
    }

}