Java tutorial
/* * Copyright 2016 The vast-pubsub authors * * Licensed 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 io.github.vastframework.pubsub; import io.netty.bootstrap.Bootstrap; import io.netty.channel.Channel; import io.netty.channel.ChannelOption; import io.netty.channel.EventLoopGroup; import io.netty.channel.epoll.Epoll; import io.netty.channel.epoll.EpollEventLoopGroup; import io.netty.channel.epoll.EpollSocketChannel; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.nio.NioSocketChannel; import java.util.function.Consumer; public class PubSubClient implements PubSub { private EventLoopGroup eventLoopGroup; private String host; private int port; public PubSubClient(String host, int port) { this.port = port; this.host = host; } public void connect(String apiKey) { Bootstrap bootstrap = new Bootstrap(); Class<? extends Channel> channelClazz; if (Epoll.isAvailable()) { channelClazz = EpollSocketChannel.class; eventLoopGroup = new EpollEventLoopGroup(); } else { channelClazz = NioSocketChannel.class; eventLoopGroup = new NioEventLoopGroup(); } bootstrap.group(eventLoopGroup).channel(channelClazz).option(ChannelOption.SO_KEEPALIVE, true) // TODO: add function to get data class by topic and add handler .remoteAddress(host, port).connect(); } @Override public <T> void subscribe(String topic, Class<T> responseClass, Consumer<T> value) { } @Override public void unsubscribe(String topic) { } @Override public void publish(String topic, Object data) { } }