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Defines the lookup service using the Chord algorithm

There is a newer version: 2.0.2

/*
 *  Chord project implement of lookup algorithm Chord
 *  Copyright (C) 2010 - 2018  Daniel Pelaez
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see .
 *
 */

package co.edu.uniquindio.chord.node.command;

import co.edu.uniquindio.chord.node.ChordNode;
import co.edu.uniquindio.chord.node.StableRing;

import java.util.Objects;
import java.util.Observable;
import java.util.Observer;

/**
 * The StabilizeObserver class is responsible for executing the
 * method {@code ChordNode.stabilize} in the chord node at once.
 * 
 * Instantiated periodically in {@link StableRing}.
 *
 * @author Daniel Pelaez
 * @author Hector Hurtado
 * @author Daniel Lopez
 * @version 1.0, 17/06/2010
 * @see StableRing
 * @since 1.0
 */
public class StabilizeObserver implements Observer {

    /**
     * Executes the method {@code ChordNode.stabilize} in the chord node at
     * once.
     */
    @Override
    public void update(Observable observable, Object o) {
        Objects.nonNull(o);

        ChordNode chordNode = (ChordNode) o;

        chordNode.stabilize();
    }
}