Java tutorial
/* * Copyright (c) 2015 Spotify AB. * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.spotify.heroic.consumer.collectd; import eu.toolchain.async.AsyncFramework; import eu.toolchain.async.AsyncFuture; import eu.toolchain.async.ResolvableFuture; import io.netty.bootstrap.Bootstrap; import io.netty.channel.Channel; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelOption; import io.netty.channel.EventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.nio.NioDatagramChannel; import lombok.Data; import java.net.InetAddress; @Data public class Server { private final AsyncFramework async; private final Channel channel; public AsyncFuture<Void> start() { return async.resolved(); } public AsyncFuture<Void> shutdown() { return async.resolved(); } public static AsyncFuture<Server> setup(final AsyncFramework async, final CollectdChannelHandler handler, final InetAddress host, final int port) { final EventLoopGroup group = new NioEventLoopGroup(); final Bootstrap b = new Bootstrap(); b.group(group).channel(NioDatagramChannel.class).option(ChannelOption.SO_BROADCAST, true).handler(handler); final ResolvableFuture<Server> future = async.future(); b.bind(host, port).addListener(new ChannelFutureListener() { @Override public void operationComplete(final ChannelFuture f) throws Exception { if (f.isSuccess()) { future.resolve(new Server(async, f.channel())); } else { future.fail(f.cause() != null ? f.cause() : new RuntimeException("Failed to bind")); } } }); return future; } }