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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.plugin;

import java.io.Closeable;

public interface RulesEngine {
    interface RulesSession extends Closeable {

        int evaluate(Message message, boolean retractFacts);

        Object insertFact(Object fact);

        boolean deleteFact(Object fact);
    }

    boolean addRule(String ruleSource);

    boolean addRulesFromFile(String rulesFile);

    int evaluateInSharedSession(Message message);

    RulesSession createPrivateSession();

    Object insertFact(Object fact);

    boolean deleteFact(Object fact);
}