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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.cluster.leader;

import com.google.common.util.concurrent.Service;

public interface LeaderElectionService extends Service {
    /**
     * Check if the current node is the leader of the cluster.
     * 
     * This method might be called frequently. Implementations should be performant and resource-friendly.
     * 
     *
     * @return true if the current node is the leader, false if it is not
     */
    boolean isLeader();
}