net.solarnetwork.node.setup.auto.SettingsImporter.java Source code

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Here is the source code for net.solarnetwork.node.setup.auto.SettingsImporter.java

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/* ==================================================================
 * SettingsImporter.java - Feb 19, 2015 2:38:16 PM
 * 
 * Copyright 2007-2015 SolarNetwork.net Dev Team
 * 
 * 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., 59 Temple Place, Suite 330, Boston, MA 
 * 02111-1307 USA
 * ==================================================================
 */

package net.solarnetwork.node.setup.auto;

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import net.solarnetwork.node.settings.SettingsImportOptions;
import net.solarnetwork.node.settings.SettingsService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;

/**
 * Look for a settings export to automatically load then the application starts.
 * 
 * The {@link SettingsService#importSettingsCSV(java.io.Reader)} method is used
 * to import a previously-exported settings CSV resource.
 * 
 * @author matt
 * @version 1.0
 */
public class SettingsImporter {

    private Resource settingsResource = new FileSystemResource("conf/auto-settings.csv");
    private SettingsService settingsService;

    private final Logger log = LoggerFactory.getLogger(getClass());

    /**
     * Attempt to load the {@code settingsResource}. Does not throw any
     * exceptions if the resource is not available or cannot be read.
     */
    public void loadSettings() {
        if (settingsResource == null) {
            return;
        }
        Reader in = null;
        try {
            in = new InputStreamReader(settingsResource.getInputStream(), "UTF-8");
            log.info("Auto-importing settings from {}", settingsResource);
            SettingsImportOptions options = new SettingsImportOptions();
            options.setAddOnly(true);
            if (settingsService != null) {
                settingsService.importSettingsCSV(in, options);
            }
        } catch (Exception e) {
            log.warn("Error importing settings resource {}: {}", settingsResource, e.getMessage());
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    // ignore this
                }
            }
        }
    }

    public void setSettingsService(SettingsService settingsService) {
        this.settingsService = settingsService;
    }

    public void setSettingsResource(Resource settingsResource) {
        this.settingsResource = settingsResource;
    }

}