com.opensoc.tagging.adapters.RegexTagger.java Source code

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Here is the source code for com.opensoc.tagging.adapters.RegexTagger.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

package com.opensoc.tagging.adapters;

import java.util.Map;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

public class RegexTagger extends AbstractTaggerAdapter {

    /**
     * Reads a regex rules file and tags a message with alerts if any rule from that file
     * matches anything in the telemetry message
     */
    private static final long serialVersionUID = -6091495636459799411L;
    Map<String, JSONObject> _rules;

    /**
     * 
     * @param rules rules read from a properties XML file
     */
    public RegexTagger(Map<String, JSONObject> rules) {
        _rules = rules;
    }

    /**
     * @param raw_message telemetry message to be tagged
     */
    @SuppressWarnings("unchecked")
    public JSONArray tag(JSONObject raw_message) {

        JSONArray ja = new JSONArray();
        String message_as_string = raw_message.toString();

        for (String rule : _rules.keySet()) {
            if (message_as_string.matches(rule)) {
                ja.add(_rules.get(rule));
            }
        }

        return ja;
    }

}