com.offbynull.voip.kademlia.AdvertiseSubcoroutine.java Source code

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Here is the source code for com.offbynull.voip.kademlia.AdvertiseSubcoroutine.java

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/*
 * Copyright (c) 2015, Kasra Faghihi, All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */
package com.offbynull.voip.kademlia;

import com.offbynull.coroutines.user.Continuation;
import com.offbynull.peernetic.core.actor.Context;
import com.offbynull.peernetic.core.actor.helpers.SleepSubcoroutine;
import com.offbynull.peernetic.core.actor.helpers.Subcoroutine;
import com.offbynull.peernetic.core.shuttle.Address;
import com.offbynull.voip.kademlia.model.Id;
import com.offbynull.voip.kademlia.model.Node;
import com.offbynull.voip.kademlia.model.Router;
import com.offbynull.voip.kademlia.model.RouterChangeSet;
import java.time.Duration;
import java.util.List;
import org.apache.commons.lang3.Validate;

final class AdvertiseSubcoroutine implements Subcoroutine<Void> {

    private final Address subAddress;
    private final State state;

    private final Address timerAddress;

    private final Router router;
    private final Id baseId;

    private final GraphHelper graphHelper;

    public AdvertiseSubcoroutine(Address subAddress, State state) {
        Validate.notNull(subAddress);
        Validate.notNull(state);

        this.subAddress = subAddress;
        this.state = state;

        this.timerAddress = state.getTimerAddress();

        this.baseId = state.getBaseId();
        this.router = state.getRouter();

        this.graphHelper = state.getGraphHelper();
    }

    @Override
    public Address getAddress() {
        return subAddress;
    }

    @Override
    public Void run(Continuation cnt) throws Exception {
        Context ctx = (Context) cnt.getContext();

        while (true) {
            // Sleep for a bit
            new SleepSubcoroutine.Builder().sourceAddress(subAddress).duration(Duration.ofSeconds(5L))
                    .timerAddress(timerAddress).build().run(cnt);

            List<Node> closestNodes = new FindSubcoroutine(subAddress.appendSuffix("find"), state, baseId, 20, true,
                    true).run(cnt);
            for (Node node : closestNodes) {
                RouterChangeSet changeSet = router.touch(ctx.getTime(), node); // since we set ignoreSelf to true, node will never == baseId
                graphHelper.applyRouterChanges(ctx, changeSet);
            }
        }
    }
}