org.dederem.common.service.ConfigService.java Source code

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Here is the source code for org.dederem.common.service.ConfigService.java

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/**
 * ConfigService.java
 *
 * Copyright (c) 2015, Charles Fendt. 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package org.dederem.common.service;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import javax.annotation.PostConstruct;
import javax.ejb.Singleton;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import lombok.Getter;

/**
 * Service for the configuration management.
 *
 * @author charles
 */
@Singleton
public class ConfigService {

    /** Logger of the class. */
    private static final Logger LOG = LoggerFactory.getLogger(ConfigService.class);

    /** The Configuration file. */
    @Getter
    private final File configFile;
    /** The directory for the repository. */
    @Getter
    private final File repoDir;

    /** List of supported suites. */
    @Getter
    private String suites;
    /** The base repository. */
    @Getter
    private String baseRepository;

    /**
     * Default constructor.
     *
     * @throws IOException
     *             I/O error.
     */
    public ConfigService() {
        super();

        final Properties props = new Properties();
        try (final InputStream input = this.getClass().getResourceAsStream("/config/defaultConfig.properties")) {
            props.load(input);
        } catch (final IOException ex) {
            ConfigService.LOG.error(ex.getMessage(), ex);
        }
        this.configFile = new File(
                StringUtils.defaultIfEmpty(props.getProperty("config.dir"), "/etc/dederem.conf"));
        this.repoDir = new File(StringUtils.defaultIfEmpty(props.getProperty("repo.dir"), "/opt/dederem"));
    }

    /**
     * Method to read the configuration.
     *
     * @throws IOException
     *             I/O error.
     */
    @PostConstruct
    public final void initialize() throws IOException {
        final Properties props = new Properties();
        if (this.configFile.exists()) {
            try (InputStream input = new FileInputStream(this.configFile)) {
                props.load(input);
            }
        }

        this.suites = StringUtils.defaultIfBlank(props.getProperty("suites"), "main, contrib, non-free");
        this.baseRepository = StringUtils.defaultIfBlank(props.getProperty("baseRepository"),
                "http://ftp.de.debian.org/debian/");
    }
}