Java tutorial
/* * This file is part of LuckPerms, licensed under the MIT License. * * Copyright (c) lucko (Luck) <luck@lucko.me> * Copyright (c) contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package me.lucko.luckperms.bungee.messaging; import com.google.common.io.ByteArrayDataInput; import com.google.common.io.ByteArrayDataOutput; import com.google.common.io.ByteStreams; import me.lucko.luckperms.api.messenger.IncomingMessageConsumer; import me.lucko.luckperms.api.messenger.Messenger; import me.lucko.luckperms.api.messenger.message.OutgoingMessage; import me.lucko.luckperms.bungee.LPBungeePlugin; import net.md_5.bungee.api.config.ServerInfo; import net.md_5.bungee.api.connection.ProxiedPlayer; import net.md_5.bungee.api.event.PluginMessageEvent; import net.md_5.bungee.api.plugin.Listener; import net.md_5.bungee.event.EventHandler; import javax.annotation.Nonnull; /** * An implementation of {@link Messenger} using the plugin messaging channels. */ public class BungeeMessenger implements Messenger, Listener { private static final String CHANNEL = "luckperms:update"; private final LPBungeePlugin plugin; private final IncomingMessageConsumer consumer; public BungeeMessenger(LPBungeePlugin plugin, IncomingMessageConsumer consumer) { this.plugin = plugin; this.consumer = consumer; } public void init() { this.plugin.getBootstrap().getProxy().getPluginManager().registerListener(this.plugin.getBootstrap(), this); this.plugin.getBootstrap().getProxy().registerChannel(CHANNEL); } @Override public void close() { this.plugin.getBootstrap().getProxy().unregisterChannel(CHANNEL); } @Override public void sendOutgoingMessage(@Nonnull OutgoingMessage outgoingMessage) { ByteArrayDataOutput out = ByteStreams.newDataOutput(); out.writeUTF(outgoingMessage.asEncodedString()); byte[] data = out.toByteArray(); for (ServerInfo server : this.plugin.getBootstrap().getProxy().getServers().values()) { server.sendData(CHANNEL, data, true); } } @EventHandler public void onPluginMessage(PluginMessageEvent e) { if (!e.getTag().equals(CHANNEL)) { return; } e.setCancelled(true); if (e.getSender() instanceof ProxiedPlayer) { return; } byte[] data = e.getData(); ByteArrayDataInput in = ByteStreams.newDataInput(data); String msg = in.readUTF(); if (this.consumer.consumeIncomingMessageAsString(msg)) { // Forward to other servers this.plugin.getBootstrap().getScheduler().executeAsync(() -> { for (ServerInfo server : this.plugin.getBootstrap().getProxy().getServers().values()) { server.sendData(CHANNEL, data, true); } }); } } }