mirror of
https://github.com/proxiodev/RedisBungee.git
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416 lines
15 KiB
Java
416 lines
15 KiB
Java
/**
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* Copyright © 2013 tuxed <write@imaginarycode.com>
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* This work is free. You can redistribute it and/or modify it under the
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* terms of the Do What The Fuck You Want To Public License, Version 2,
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* as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
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*/
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package com.imaginarycode.minecraft.redisbungee;
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.ImmutableSet;
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import com.google.common.io.ByteStreams;
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import net.md_5.bungee.api.ServerPing;
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import net.md_5.bungee.api.config.ServerInfo;
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import net.md_5.bungee.api.connection.ProxiedPlayer;
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import net.md_5.bungee.api.event.*;
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import net.md_5.bungee.api.plugin.Listener;
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import net.md_5.bungee.api.plugin.Plugin;
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import net.md_5.bungee.event.EventHandler;
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import org.yaml.snakeyaml.Yaml;
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import redis.clients.jedis.*;
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import redis.clients.jedis.exceptions.JedisConnectionException;
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import redis.clients.jedis.exceptions.JedisException;
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import java.io.*;
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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import java.util.logging.Level;
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/**
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* The RedisBungee plugin.
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* <p/>
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* The only function of interest is {@link #getApi()}, which exposes some functions in this class.
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*/
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public class RedisBungee extends Plugin implements Listener {
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private static final ServerPing.PlayerInfo[] EMPTY_PLAYERINFO = new ServerPing.PlayerInfo[]{};
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private RedisBungeeCommandSender commandSender = new RedisBungeeCommandSender();
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private static RedisBungeeConfiguration configuration = new RedisBungeeConfiguration();
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private JedisPool pool;
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private RedisBungee plugin;
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private static RedisBungeeAPI api;
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private PubSubListener psl = null;
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/**
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* Fetch the {@link RedisBungeeAPI} object created on plugin start.
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*
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* @return the {@link RedisBungeeAPI} object
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*/
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public static RedisBungeeAPI getApi() {
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return api;
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}
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protected static RedisBungeeConfiguration getConfiguration() {
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return configuration;
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}
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public int getCount() {
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int c = plugin.getProxy().getOnlineCount();
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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for (String i : getConfiguration().getLinkedServers()) {
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if (i.equals(configuration.getServerId())) continue;
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if (rsc.exists("server:" + i + ":playerCount"))
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c += Integer.valueOf(rsc.get("server:" + i + ":playerCount"));
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}
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} finally {
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pool.returnResource(rsc);
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}
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}
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return c;
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}
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public Set<String> getPlayers() {
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Set<String> players = new HashSet<>();
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for (ProxiedPlayer pp : plugin.getProxy().getPlayers()) {
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players.add(pp.getName());
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}
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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for (String i : getConfiguration().getLinkedServers()) {
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if (i.equals(configuration.getServerId())) continue;
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players.addAll(rsc.smembers("server:" + i + ":usersOnline"));
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}
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} finally {
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pool.returnResource(rsc);
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}
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}
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return ImmutableSet.copyOf(players);
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}
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public ServerInfo getServerFor(String name) {
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ServerInfo server = null;
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if (plugin.getProxy().getPlayer(name) != null) return plugin.getProxy().getPlayer(name).getServer().getInfo();
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if (pool != null) {
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Jedis tmpRsc = pool.getResource();
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try {
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if (tmpRsc.hexists("player:" + name, "server"))
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server = plugin.getProxy().getServerInfo(tmpRsc.hget("player:" + name, "server"));
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} finally {
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pool.returnResource(tmpRsc);
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}
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}
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return server;
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}
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private long getUnixTimestamp() {
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return TimeUnit.SECONDS.convert(System.currentTimeMillis(), TimeUnit.MILLISECONDS);
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}
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public long getLastOnline(String name) {
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long time = -1L;
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if (plugin.getProxy().getPlayer(name) != null) return 0;
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if (pool != null) {
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Jedis tmpRsc = pool.getResource();
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try {
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if (tmpRsc.hexists("player:" + name, "online"))
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time = Long.valueOf(tmpRsc.hget("player:" + name, "online"));
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} finally {
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pool.returnResource(tmpRsc);
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}
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}
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return time;
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}
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@Override
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public void onEnable() {
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plugin = this;
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try {
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loadConfig();
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} catch (IOException e) {
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e.printStackTrace();
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} catch (JedisConnectionException e) {
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throw new RuntimeException("Unable to connect to your Redis server!", e);
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}
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if (pool != null) {
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Jedis tmpRsc = pool.getResource();
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try {
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tmpRsc.set("server:" + configuration.getServerId() + ":playerCount", "0"); // reset
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if (tmpRsc.scard("server:" + configuration.getServerId() + ":usersOnline") > 0) {
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Set<String> smembers = tmpRsc.smembers("server:" + configuration.getServerId() + ":usersOnline");
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tmpRsc.srem("server:" + configuration.getServerId() + ":usersOnline", smembers.toArray(new String[smembers.size()]));
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}
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} finally {
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pool.returnResource(tmpRsc);
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}
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getProxy().getScheduler().schedule(this, new Runnable() {
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@Override
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public void run() {
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Jedis rsc = pool.getResource();
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try {
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rsc.set("server:" + configuration.getServerId() + ":playerCount", String.valueOf(getProxy().getOnlineCount()));
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} finally {
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pool.returnResource(rsc);
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}
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}
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}, 1, 3, TimeUnit.SECONDS);
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getProxy().getPluginManager().registerCommand(this, new RedisBungeeCommands.GlistCommand());
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getProxy().getPluginManager().registerCommand(this, new RedisBungeeCommands.FindCommand());
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getProxy().getPluginManager().registerCommand(this, new RedisBungeeCommands.LastSeenCommand());
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getProxy().getPluginManager().registerListener(this, this);
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api = new RedisBungeeAPI(this);
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psl = new PubSubListener();
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psl.start();
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}
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}
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@Override
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public void onDisable() {
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if (pool != null) {
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// Poison the PubSub listener
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psl.poison();
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getProxy().getScheduler().cancel(this);
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Jedis tmpRsc = pool.getResource();
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try {
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tmpRsc.set("server:" + configuration.getServerId() + ":playerCount", "0"); // reset
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if (tmpRsc.scard("server:" + configuration.getServerId() + ":usersOnline") > 0) {
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Set<String> smembers = tmpRsc.smembers("server:" + configuration.getServerId() + ":usersOnline");
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tmpRsc.srem("server:" + configuration.getServerId() + ":usersOnline", smembers.toArray(new String[smembers.size()]));
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}
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} catch (JedisException | ClassCastException ignored) {
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} finally {
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pool.returnResource(tmpRsc);
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}
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pool.destroy();
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}
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}
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private void loadConfig() throws IOException, JedisConnectionException {
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if (!getDataFolder().exists()) {
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getDataFolder().mkdir();
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}
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File file = new File(getDataFolder(), "config.yml");
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if (!file.exists()) {
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file.createNewFile();
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try (InputStream in = getResourceAsStream("example_config.yml");
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OutputStream out = new FileOutputStream(file)) {
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ByteStreams.copy(in, out);
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}
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}
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Yaml yaml = new Yaml();
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Map<?, ?> rawYaml;
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try (InputStream in = new FileInputStream(file)) {
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rawYaml = (Map) yaml.load(in);
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}
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String redisServer = "localhost";
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int redisPort = 6379;
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String redisPassword = null;
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try {
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redisServer = ((String) rawYaml.get("redis-server"));
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} catch (NullPointerException ignored) {
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}
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try {
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redisPort = ((Integer) rawYaml.get("redis-port"));
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} catch (NullPointerException ignored) {
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}
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try {
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redisPassword = ((String) rawYaml.get("redis-password"));
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} catch (NullPointerException ignored) {
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}
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try {
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configuration.setServerId((String) rawYaml.get("server-id"));
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} catch (NullPointerException ignored) {
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}
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try {
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configuration.setCanonicalGlist((Boolean) rawYaml.get("canonical-glist"));
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} catch (NullPointerException ignored) {
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}
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try {
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configuration.setPlayerListInPing(((Boolean) rawYaml.get("player-list-in-ping")));
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} catch (NullPointerException ignored) {
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}
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List<?> tmp = (List<?>) rawYaml.get("linked-servers");
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List<String> servers = new ArrayList<>();
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if (tmp != null)
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for (Object i : tmp) {
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if (i instanceof String) {
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servers.add((String) i);
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}
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}
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configuration.setLinkedServers(ImmutableList.copyOf(servers));
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if (redisPassword != null && (redisPassword.equals("") || redisPassword.equals("none"))) {
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redisPassword = null;
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}
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if (redisServer != null) {
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if (!redisServer.equals("")) {
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pool = new JedisPool(new JedisPoolConfig(), redisServer, redisPort, Protocol.DEFAULT_TIMEOUT, redisPassword);
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// Test the connection
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Jedis rsc = null;
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try {
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rsc = pool.getResource();
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rsc.exists(String.valueOf(System.currentTimeMillis()));
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getLogger().log(Level.INFO, "Successfully connected to Redis.");
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} catch (JedisConnectionException e) {
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if (rsc != null)
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pool.returnBrokenResource(rsc);
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pool.destroy();
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pool = null;
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rsc = null;
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throw e;
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} finally {
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if (rsc != null && pool != null) {
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pool.returnResource(rsc);
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}
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}
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}
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}
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}
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@EventHandler
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public void onPreLogin(PreLoginEvent event) {
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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if (rsc.hexists("player:" + event.getConnection().getName(), "server")) {
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event.setCancelled(true);
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event.setCancelReason("You are already logged on to this server.");
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}
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} finally {
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pool.returnResource(rsc);
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}
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}
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}
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@EventHandler
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public void onPlayerConnect(final PostLoginEvent event) {
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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rsc.sadd("server:" + configuration.getServerId() + ":usersOnline", event.getPlayer().getName());
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rsc.hset("player:" + event.getPlayer().getName(), "online", "0");
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} finally {
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pool.returnResource(rsc);
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}
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}
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// I used to have a task that eagerly waited for the user to be connected.
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// Well, upon further inspection of BungeeCord's source code, this turned
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// out to not be needed at all, since ServerConnectedEvent is called anyway.
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}
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@EventHandler
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public void onPlayerDisconnect(final PlayerDisconnectEvent event) {
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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rsc.srem("server:" + configuration.getServerId() + ":usersOnline", event.getPlayer().getName());
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rsc.hset("player:" + event.getPlayer().getName(), "online", String.valueOf(getUnixTimestamp()));
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rsc.hdel("player:" + event.getPlayer().getName(), "server");
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} finally {
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pool.returnResource(rsc);
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}
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}
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}
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@EventHandler
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public void onServerChange(final ServerConnectedEvent event) {
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if (pool != null) {
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Jedis rsc = pool.getResource();
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try {
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rsc.hset("player:" + event.getPlayer().getName(), "server", event.getServer().getInfo().getName());
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} finally {
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pool.returnResource(rsc);
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}
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}
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}
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@EventHandler
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public void onPing(ProxyPingEvent event) {
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ServerPing old = event.getResponse();
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ServerPing reply = new ServerPing();
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if (configuration.isPlayerListInPing()) {
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Set<String> players = getPlayers();
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ServerPing.PlayerInfo[] info = new ServerPing.PlayerInfo[players.size()];
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int idx = 0;
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for (String player : players) {
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info[idx] = new ServerPing.PlayerInfo(player, "");
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idx++;
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}
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reply.setPlayers(new ServerPing.Players(old.getPlayers().getMax(), players.size(), info));
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} else {
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reply.setPlayers(new ServerPing.Players(old.getPlayers().getMax(), getCount(), EMPTY_PLAYERINFO));
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}
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reply.setDescription(old.getDescription());
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reply.setFavicon(old.getFavicon());
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reply.setVersion(old.getVersion());
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event.setResponse(reply);
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}
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private class PubSubListener extends Thread {
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private Jedis rsc;
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private JedisPubSubHandler jpsh;
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private PubSubListener() {
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super("RedisBungee PubSub Listener");
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}
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@Override
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public void run() {
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try {
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rsc = pool.getResource();
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jpsh = new JedisPubSubHandler();
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rsc.subscribe(jpsh, "redisbungee-" + configuration.getServerId(), "redisbungee-allservers");
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} catch (JedisException | ClassCastException ignored) {
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}
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}
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public void poison() {
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jpsh.unsubscribe();
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pool.returnResource(rsc);
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}
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}
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private class JedisPubSubHandler extends JedisPubSub {
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@Override
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public void onMessage(String s, String s2) {
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String cmd;
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if (s2.startsWith("/")) {
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cmd = s2.substring(1);
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} else {
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cmd = s2;
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}
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getLogger().info("Invoking command from PubSub: /" + s2);
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getProxy().getPluginManager().dispatchCommand(commandSender, cmd);
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}
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@Override
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public void onPMessage(String s, String s2, String s3) {
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}
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@Override
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public void onSubscribe(String s, int i) {
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}
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@Override
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public void onUnsubscribe(String s, int i) {
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}
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@Override
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public void onPUnsubscribe(String s, int i) {
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}
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@Override
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public void onPSubscribe(String s, int i) {
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}
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}
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}
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