IPAnonymizerConverter.java example

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graylog2-server-master
/**
 * This file is part of Graylog.
 *
 * Graylog 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 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog 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 Graylog.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.graylog2.inputs.converters;

import org.graylog2.plugin.inputs.Converter;

import java.util.Map;
import java.util.regex.Pattern;

/**
 * @author Lennart Koopmann <lennart@torch.sh>
 */
public class IPAnonymizerConverter extends Converter {

    public static final String REPLACEMENT = "$1.$2.$3.xxx";
    public static final Pattern p = Pattern.compile("(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})");

    public IPAnonymizerConverter(Map<String, Object> config) {
        super(Type.IP_ANONYMIZER, config);
    }

    @Override
    public Object convert(String value) {
        if (value == null || value.isEmpty()) {
            return value;
        }

        return p.matcher(value).replaceAll(REPLACEMENT);
    }

    @Override
    public boolean buildsMultipleFields() {
        return false;
    }

}