com.manoelcampos.gossipsimulator.GossipConfig Maven / Gradle / Ivy

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package com.manoelcampos.gossipsimulator;

/**
 * Gossip Protocol configuration.
 * It defines a set of parameters used to run a simulation.
 */
public class GossipConfig {
    private final int fanout;
    private final int maxNeighbours;

    /**
     * Instantiates a gossip config.
     * @param fanout the number of nodes to randomly spread information to
     * @param maxNeighbours the maximum number of neighbours a node will be linked to.
     */
    public GossipConfig(final int fanout, final int maxNeighbours) {
        if(fanout <= 0){
            throw new IllegalArgumentException("Fanout must be greater than 0.");
        }

        if(maxNeighbours <= 0){
            throw new IllegalArgumentException("Max number of neighbours must be greater than 0.");
        }

        if(maxNeighbours <= fanout){
            throw new IllegalArgumentException(
                String.format(
                        "Max number of neighbours (%d) must be greater than the fanout (%d).",
                        maxNeighbours, fanout));
        }

        this.fanout = fanout;
        this.maxNeighbours = maxNeighbours;
    }

    /**
     * Gets the number of nodes to randomly spread information to
     * @return
     */
    public int getFanout() {
        return fanout;
    }

    /**
     * Gets the max number of neighbours a node will be linked to.
     * @return
     */
    public int getMaxNeighbours() {
        return maxNeighbours;
    }

}