com.goodgamenow.source.serverquery.MasterClientBootstrap.java Source code

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Here is the source code for com.goodgamenow.source.serverquery.MasterClientBootstrap.java

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/*
 * MasterClientBootstrap.java
 *
 * Copyright (c) 2016.  Joe Nellis
 * Distributed under MIT License. See accompanying file License.txt or at
 * http://opensource.org/licenses/MIT
 *
 */

package com.goodgamenow.source.serverquery;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.socket.nio.NioDatagramChannel;

import java.util.List;

/**
 * Creates a bootstrap to bind a channel to the Source master server and
 * serve a request for game servers matching a filter.
 *
 * Assumes an operation of one query per channel at a time.
 *
 * Usage:
 * <pre>{@code
 *   Bootstrap mcb = new MasterClientBootstrap(eventLoop, query);
 *   ChannelFuture future = mcb.bind(0);
 *   future.channel().closeFuture().addListener( (fut)-> {
 *      List addresses = mcb.getResults();
 *      // do something with these.
 *   });
 * }</pre>
 */
public class MasterClientBootstrap extends Bootstrap {

    private final MasterQueryHandler queryHandler;

    public MasterClientBootstrap(EventLoopGroup eventLoopGroup, MasterQuery query) {
        this(eventLoopGroup, query, null);
    }

    public MasterClientBootstrap(EventLoopGroup eventLoopGroup, MasterQuery query,
            ChannelHandlerContext parentContext) {

        this.queryHandler = new MasterQueryHandler(query, parentContext);

        this.group(eventLoopGroup).channel(NioDatagramChannel.class)
                .option(ChannelOption.SO_BROADCAST, Boolean.TRUE)
                .option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT).handler(queryHandler);
    }

    public List<String> getResults() {
        return queryHandler.getResults();
    }

    public long getRuntime() {
        return queryHandler.getRuntime();
    }
}