Merge branch 'master' into fightInfoPacket

src/de/steamwar/bungeecore/BungeeCore.java

@@ -24,14 +24,13 @@ import de.steamwar.bungeecore.bot.config.SteamwarDiscordBotConfig;
 import de.steamwar.bungeecore.commands.*;
 import de.steamwar.bungeecore.comms.SpigotReceiver;
 import de.steamwar.bungeecore.listeners.*;
-import de.steamwar.bungeecore.listeners.mods.ModLoaderBlocker;
 import de.steamwar.bungeecore.listeners.mods.Forge;
 import de.steamwar.bungeecore.listeners.mods.LabyMod;
+import de.steamwar.bungeecore.listeners.mods.ModLoaderBlocker;
 import de.steamwar.bungeecore.listeners.mods.WorldDownloader;
-import de.steamwar.bungeecore.sql.SQL;
+import de.steamwar.bungeecore.sql.Statement;
 import de.steamwar.bungeecore.sql.SteamwarUser;
 import de.steamwar.bungeecore.sql.Team;
-import net.dv8tion.jda.api.JDA;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
@@ -71,6 +70,8 @@ public class BungeeCore extends Plugin {
     public static final Map<String, String> serverPermissions = new HashMap<>();
     public static final Map<String, String> commands = new HashMap<>();
 
+    private ErrorLogger errorLogger;
+
     @Override
     public void onEnable(){
         getProxy().registerChannel("sw:bridge");
@@ -78,7 +79,7 @@ public class BungeeCore extends Plugin {
         setInstance(this);
         loadConfig();
 
-        new ErrorLogger();
+        errorLogger = new ErrorLogger();
         new ConnectionListener();
         new Forge();
         new LabyMod();
@@ -89,9 +90,10 @@ public class BungeeCore extends Plugin {
         new WorldDownloader();
         new BrandListener();
 
-        commands.put("/b", null);
+        new Node.LocalNode();
-        commands.put("/gs", null);
+        new Node.RemoteNode("lx");
-        commands.put("/bau", null);
+        new Node.RemoteNode("az");
+
         commands.put("/tp", null);
         commands.put("/bc", null);
         commands.put("/bauchat", null);
@@ -130,6 +132,7 @@ public class BungeeCore extends Plugin {
         new VerifyCommand();
 
         if(!EVENT_MODE){
+            new BauCommand();
             new WebregisterCommand();
             new FightCommand();
             new ChallengeCommand();
@@ -145,25 +148,32 @@ public class BungeeCore extends Plugin {
         new EventStarter();
         new SessionManager();
         new SpigotReceiver();
-        new SteamwarDiscordBot();
         new TablistManager();
 
         getProxy().getScheduler().schedule(this, () -> {
             SteamwarUser.clearCache();
             Team.clearCache();
         }, 1, 1, TimeUnit.HOURS);
+
+        if (SteamwarDiscordBotConfig.loaded) {
+            try {
+                new SteamwarDiscordBot();
+            } catch (Throwable e) {
+                getLogger().log(Level.SEVERE, "Could not initialize discord bot", e);
+            }
+        }
     }
 
     @Override
     public void onDisable(){
-        ErrorLogger.stop();
-        SQL.close();
         try {
-            SteamwarDiscordBot.instance().getJda().shutdownNow();
+            SteamwarDiscordBot.instance().getJda().shutdown();
-            SteamwarDiscordBot.instance().getJda().awaitStatus(JDA.Status.SHUTDOWN);
+        } catch (Throwable e) {
-        } catch (Exception e) {
+            getLogger().log(Level.SEVERE, "Could not shutdown discord bot", e);
-            // Ignored
         }
+
+        errorLogger.unregister();
+        Statement.close();
     }
 
     public static BungeeCore get() {
@@ -258,14 +268,16 @@ public class BungeeCore extends Plugin {
         Persistent.setChatPrefix(CHAT_PREFIX);
         Persistent.setLobbyServer(LOBBY_SERVER);
 
-        SQL.connect(
+        Statement.connect(
                 config.getString("db.url"),
                 config.getString("db.username"),
                 config.getString("db.password")
         );
 
         ArenaMode.init(config.getSection("games"));
-        SteamwarDiscordBotConfig.loadConfig(config.getSection("discord"));
+        if (config.getSection("discord") != null) {
+            SteamwarDiscordBotConfig.loadConfig(config.getSection("discord"));
+        }
 
         final Configuration servers = config.getSection("servers");
         for(final String serverName : servers.getKeys()){

src/de/steamwar/bungeecore/ErrorLogger.java

@@ -20,83 +20,55 @@
 package de.steamwar.bungeecore;
 
 import de.steamwar.bungeecore.sql.SWException;
-import net.md_5.bungee.api.ProxyServer;
+import de.steamwar.bungeecore.sql.Statement;
 
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
 import java.text.MessageFormat;
-import java.util.logging.Filter;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.LogRecord;
+import java.util.logging.Logger;
 
-public class ErrorLogger extends Handler implements Filter {
+public class ErrorLogger extends Handler {
-    private static ErrorLogger instance;
     private int ddosRate = 0;
 
     ErrorLogger(){
-        ProxyServer.getInstance().getLogger().addHandler(this);
+        Logger.getLogger("").addHandler(this);
-        ProxyServer.getInstance().getLogger().setFilter(this);
-        instance = this;
     }
 
-    static void stop(){
+    void unregister(){
-        ProxyServer.getInstance().getLogger().removeHandler(instance);
+        Logger.getLogger("").removeHandler(this);
     }
 
     @Override
-    public boolean isLoggable(LogRecord record) {
+    public void publish(LogRecord logRecord) {
-        if(record.getLevel() != Level.SEVERE)
+        if(logRecord.getLevel().intValue() < Level.WARNING.intValue())
-            return true;
+            return;
 
-        StringBuilder stacktrace = new StringBuilder(record.getSourceClassName() + "\n" + record.getSourceMethodName());
+        String message = MessageFormat.format(logRecord.getMessage(), logRecord.getParameters());
-        Throwable thrown = record.getThrown();
+        for(String reason : ignoreContains)
-        while(thrown != null){
+            if(message.contains(reason))
-            stacktrace.append("\nCaused by ").append(thrown.getMessage());
+                return;
 
-            for(StackTraceElement ste : thrown.getStackTrace())
+        ByteArrayOutputStream stacktraceOutput = new ByteArrayOutputStream();
-                stacktrace.append("\n").append(ste.toString());
+        if(logRecord.getThrown() != null)
-
+            logRecord.getThrown().printStackTrace(new PrintStream(stacktraceOutput));
-            thrown = thrown.getCause();
+        String stacktrace = stacktraceOutput.toString();
-        }
+        if(stacktrace.contains("Cannot request protocol")) {
-
+            if(++ddosRate % 1000 == 0) {
-        String stacktraceString = stacktrace.toString();
-        if(stacktraceString.contains("Cannot request protocol")){
-            ddosRate++;
-            if(ddosRate % 1000 == 0){
                 SWException.log("Bungee", "DDOS", ddosRate + "");
             }
-            return false;
-        }
-        return true;
-    }
-
-    @Override
-    public void publish(LogRecord record) {
-        if(record.getLevel() != Level.SEVERE && record.getLevel() != Level.WARNING)
             return;
-
+        } else if (!Statement.connectionStable()) {
-        StringBuilder stacktrace = new StringBuilder(record.getSourceClassName() + "\n" + record.getSourceMethodName());
+            return;
-        Throwable thrown = record.getThrown();
-        while(thrown != null){
-            stacktrace.append("\nCaused by ").append(thrown.getMessage());
-
-            for(StackTraceElement ste : thrown.getStackTrace())
-                stacktrace.append("\n").append(ste.toString());
-
-            thrown = thrown.getCause();
         }
 
-        String stacktraceString = stacktrace.toString();
-        String message = MessageFormat.format(record.getMessage(), record.getParameters());
 
-        if(message.contains("ServerConnector")
+        SWException.log("Bungee", message, stacktrace);
-                || message.contains("InitialHandler")
-                || message.contains("UpstreamBridge")
-                || message.contains("DownstreamBridge")
-                || message.contains(" took ")
-                || message.contains("No client connected for pending server!"))
-            return;
-
-        SWException.log("Bungee", message, stacktraceString);
     }
 
     @Override
@@ -108,4 +80,17 @@ public class ErrorLogger extends Handler implements Filter {
     public void close() {
         //ignored
     }
+
+    private static final List<String> ignoreContains;
+
+    static {
+        List<String> contains = new ArrayList<>();
+        contains.add("ServerConnector");
+        contains.add("InitialHandler");
+        contains.add("UpstreamBridge");
+        contains.add("DownstreamBridge");
+        contains.add(" took ");
+        contains.add("No client connected for pending server!");
+        ignoreContains = Collections.unmodifiableList(contains);
+    }
 }

src/de/steamwar/bungeecore/LoadEvaluation.java

@@ -1,96 +0,0 @@
-/*
- * This file is a part of the SteamWar software.
- *
- * Copyright (C) 2021  SteamWar.de-Serverteam
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package de.steamwar.bungeecore;
-
-import java.io.*;
-
-public class LoadEvaluation {
-    private LoadEvaluation(){}
-
-    private static final File meminfo = new File("/proc/meminfo");
-
-    public static double getRamPercentage() {
-        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(meminfo)))) {
-            String memTotal = bufferedReader.readLine().replaceAll(" +", " ");
-            bufferedReader.readLine();
-            String memAvailable = bufferedReader.readLine().replaceAll(" +", " ");
-
-            long memTotalLong = getNumber(memTotal);
-            long memAvailableLong = getNumber(memAvailable);
-            return (memTotalLong - memAvailableLong) / (double) memTotalLong;
-        } catch (IOException e) {
-            return 1D;
-        }
-    }
-
-    public static double getRemoteRamPercentage(String remote) {
-        try {
-            // Attention:
-            // memInfo.sh needs to contain: cat /proc/meminfo
-            Process process = new ProcessBuilder("ssh", remote, "\"./memInfo.sh\"").start();
-            process.waitFor();
-            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
-            String memTotal = bufferedReader.readLine().replaceAll(" +", " ");
-            bufferedReader.readLine();
-            String memAvailable = bufferedReader.readLine().replaceAll(" +", " ");
-
-            long memTotalLong = getNumber(memTotal);
-            long memAvailableLong = getNumber(memAvailable);
-            return (memTotalLong - memAvailableLong) / (double) memTotalLong;
-        } catch (IOException e) {
-            return 1D;
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            return 1D;
-        }
-    }
-
-    public static double getCPULoad() {
-        try {
-            Process process = new ProcessBuilder("bash", "-c", "cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS=\"\" '{printf \"%.2f\\n\", ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}'").start();
-            process.waitFor();
-            return Double.parseDouble(new BufferedReader(new InputStreamReader(process.getInputStream())).readLine()) / 100.0;
-        } catch (IOException e) {
-            return 1D;
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            return 1D;
-        }
-    }
-
-    public static double getRemoteCPULoad(String remote) {
-        try {
-            // Attention:
-            // cpuLoad.sh needs to contain: cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS="" '{printf "%.2f\n", ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}'
-            Process process = new ProcessBuilder("ssh", remote, "\"./cpuLoad.sh\"").start();
-            process.waitFor();
-            return Double.parseDouble(new BufferedReader(new InputStreamReader(process.getInputStream())).readLine()) / 100.0;
-        } catch (IOException e) {
-            return 1D;
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            return 1D;
-        }
-    }
-
-    private static long getNumber(String s) {
-        return Long.parseLong(s.split(" ")[1]);
-    }
-}

src/de/steamwar/bungeecore/Node.java

@@ -0,0 +1,261 @@
+/*
+    This file is a part of the SteamWar software.
+
+    Copyright (C) 2020  SteamWar.de-Serverteam
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package de.steamwar.bungeecore;
+
+import net.md_5.bungee.api.ProxyServer;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
+import java.util.logging.Level;
+
+public abstract class Node {
+
+    private static final List<String> JVM_ARGS = Arrays.asList("-Dlog4j.configurationFile=log4j2.xml", "-server", "-Xms128M", "-XX:+UseCompressedOops", "-XX:+TieredCompilation", "-XX:TargetSurvivorRatio=90", "-XX:SurvivorRatio=8", "-XX:MaxTenuringThreshold=15", "-XX:+UnlockExperimentalVMOptions", "-XX:+UseBiasedLocking", "-XX:UseSSE=3", "-XX:+UseCodeCacheFlushing", "-XX:+UseThreadPriorities", "-XX:+AggressiveOpts", "-XX:+ReduceSignalUsage", "-XX:+UseInterpreter", "-XX:+UseSharedSpaces", "-XX:AllocatePrefetchStyle=1", "-XX:+AlwaysCompileLoopMethods", "-XX:+UseConcMarkSweepGC", "-XX:+RewriteFrequentPairs", "-XX:+OptimizeStringConcat", "-XX:+CMSCleanOnEnter", "-XX:+UseInlineCaches");
+    private static final List<String> JVM8_ARGS = Arrays.asList("-XX:ThreadPriorityPolicy=42", "-XX:SharedReadOnlySize=30m", "-XX:+UseFastEmptyMethods", "-XX:+UseFastAccessorMethods");
+    private static final double MIN_FREE_MEM = 4.0 * 1024 * 1024; // 4 GiB
+
+    private static final List<Node> nodes = new ArrayList<>();
+    public static Node local = null;
+
+    public static Node getNode() {
+        Node node = local;
+        double minLoad = local.getLoad();
+        if(minLoad < 0.5)
+            return local;
+
+        synchronized (nodes) {
+            Iterator<Node> it = nodes.iterator();
+            while(it.hasNext()) {
+                Node n = it.next();
+                double load = n.getLoad();
+                if (load < minLoad) {
+                    minLoad = load;
+                    node = n;
+                } else if (load == Double.POSITIVE_INFINITY) {
+                    BungeeCore.get().getLogger().log(Level.SEVERE, "Removing " + n.getName() + " due to infinite load!");
+                    it.remove();
+                }
+            }
+        }
+        return node;
+    }
+
+    public static void forEach(Consumer<Node> consumer) {
+        consumer.accept(local);
+        synchronized (nodes) {
+            nodes.forEach(consumer);
+        }
+    }
+
+    public abstract ProcessBuilder startServer(String serverJar, File directory, String worldDir, String levelName, int port, String xmx, String... dParams);
+    public abstract void execute(String... command);
+    public abstract String getName();
+    public abstract double getLoad();
+
+    protected void constructServerstart(List<String> cmd, String serverJar, String worldDir, String levelName, int port, String xmx, String... dParams) {
+        boolean jdk11 = serverJar.contains("1.15.2");
+
+        if(jdk11)
+            cmd.add("/usr/lib/jvm/java-11-openjdk-amd64/bin/java");
+        else
+            cmd.add("java");
+
+        for(String param : dParams){
+            cmd.add("-D" + param);
+        }
+        cmd.add("-Xmx" + xmx);
+        cmd.addAll(JVM_ARGS);
+        if(!jdk11)
+            cmd.addAll(JVM8_ARGS);
+        cmd.add("-jar");
+        cmd.add("/binarys/" + serverJar);
+        cmd.add("--log-strip-color");
+        cmd.add("--world-dir");
+        cmd.add(worldDir);
+        cmd.add("--level-name");
+        cmd.add(levelName);
+        cmd.add("--port");
+        cmd.add(String.valueOf(port));
+        cmd.add("nogui");
+    }
+
+    protected void execute(ProcessBuilder builder) {
+        try {
+            builder.start().waitFor();
+        } catch (IOException e) {
+            throw new SecurityException("Could not execute command", e);
+        } catch (InterruptedException e) {
+            ProxyServer.getInstance().getLogger().log(Level.SEVERE, "Interrupted during execution", e);
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    public static class LocalNode extends Node {
+        private static final File meminfo = new File("/proc/meminfo");
+        private static final File loadavg = new File("/proc/loadavg");
+
+        private final int cores;
+
+        public LocalNode() {
+            this.cores = Runtime.getRuntime().availableProcessors();
+            local = this;
+        }
+
+        @Override
+        public ProcessBuilder startServer(String serverJar, File directory, String worldDir, String levelName, int port, String xmx, String... dParams) {
+            List<String> cmd = new ArrayList<>();
+            constructServerstart(cmd, serverJar, worldDir, levelName, port, xmx, dParams);
+            ProcessBuilder builder = new ProcessBuilder(cmd);
+            builder.directory(directory);
+            return builder;
+        }
+
+        @Override
+        public void execute(String... command) {
+            execute(new ProcessBuilder(command));
+        }
+
+        @Override
+        public String getName() {
+            return "local";
+        }
+
+        @Override
+        public double getLoad() {
+            double totalMem;
+            double freeMem;
+            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(meminfo)))) {
+                totalMem = Double.parseDouble(bufferedReader.readLine().replaceAll(" +", " ").split(" ")[1]);
+                bufferedReader.readLine();
+                freeMem = Double.parseDouble(bufferedReader.readLine().replaceAll(" +", " ").split(" ")[1]);
+            } catch (IOException e) {
+                throw new SecurityException("Could not read local memory", e);
+            }
+
+            double cpuLoad;
+            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(loadavg)))) {
+                cpuLoad = Double.parseDouble(bufferedReader.readLine().split(" ")[0]);
+            } catch (IOException e) {
+                throw new SecurityException("Could not read local cpu", e);
+            }
+
+            return cpuLoad / cores + (freeMem > MIN_FREE_MEM ? 0 : ((totalMem - freeMem) / totalMem));
+        }
+    }
+
+    public static class RemoteNode extends Node {
+        private final int cores;
+        private final String remote;
+
+        public RemoteNode(String remote) {
+            this.remote = remote;
+
+            //Determin core count
+            Process process;
+            try {
+                process = new ProcessBuilder("ssh", remote, "nproc").start();
+                if(!process.waitFor(5, TimeUnit.SECONDS))
+                    throw new IOException("Timeout of " + remote + " on init");
+            } catch (IOException e) {
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could not initialize " + remote);
+                cores = 1;
+                return;
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                cores = 1;
+                return;
+            }
+
+            int c;
+            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+                c = Integer.parseInt(bufferedReader.readLine());
+            } catch (IOException | NumberFormatException e) {
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could not read cores of" + remote, e);
+                c = 1;
+            }
+            cores = c;
+            BungeeCore.get().getLogger().log(Level.INFO, "Adding node " + remote + " with " + cores + " cores.");
+
+            synchronized (nodes) {
+                nodes.add(this);
+            }
+        }
+
+        @Override
+        public ProcessBuilder startServer(String serverJar, File directory, String worldDir, String levelName, int port, String xmx, String... dParams) {
+            List<String> cmd = new ArrayList<>();
+            cmd.add("ssh");
+            cmd.add("-L");
+            cmd.add(port + ":localhost:" + port);
+            cmd.add(remote);
+            cmd.add("cd");
+            cmd.add(directory.getPath());
+            cmd.add(";");
+            constructServerstart(cmd, serverJar, worldDir, levelName, port, xmx, dParams);
+            return new ProcessBuilder(cmd);
+        }
+
+        @Override
+        public void execute(String... command) {
+            List<String> cmd = new ArrayList<>();
+            cmd.add("ssh");
+            cmd.add(remote);
+            cmd.addAll(Arrays.asList(command));
+            execute(new ProcessBuilder(cmd));
+        }
+
+        @Override
+        public String getName() {
+            return remote;
+        }
+
+        @Override
+        public double getLoad() {
+            Process process;
+            try {
+                process = new ProcessBuilder("ssh", remote, "cat /proc/loadavg;cat /proc/meminfo").start();
+                if(!process.waitFor(1, TimeUnit.SECONDS))
+                    return Double.POSITIVE_INFINITY;
+            } catch (IOException e) {
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could starting process to read load", e);
+                return Double.POSITIVE_INFINITY;
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                return Double.POSITIVE_INFINITY;
+            }
+
+            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+                double cpuLoad = Double.parseDouble(bufferedReader.readLine().split(" ")[0]);
+                double totalMem = Double.parseDouble(bufferedReader.readLine().replaceAll(" +", " ").split(" ")[1]);
+                bufferedReader.readLine();
+                double freeMem = Double.parseDouble(bufferedReader.readLine().replaceAll(" +", " ").split(" ")[1]);
+                return cpuLoad / cores + (freeMem > MIN_FREE_MEM ? 0 : ((totalMem - freeMem) / totalMem));
+            } catch (IOException e) {
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could read load", e);
+                return Double.POSITIVE_INFINITY;
+            }
+        }
+    }
+}

src/de/steamwar/bungeecore/SubserverSystem.java

@@ -27,18 +27,14 @@ import net.md_5.bungee.api.chat.ClickEvent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
 import java.io.File;
-import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.time.format.DateTimeFormatter;
-import java.util.*;
+import java.util.UUID;
-import java.util.logging.Level;
 
 public class SubserverSystem {
     private SubserverSystem(){}
 
-    private static final String BACKBONE = "/home/minecraft/backbone/";
+    private static final String BACKBONE = "/home/minecraft/";
-    private static final List<String> JVM_ARGS = Arrays.asList("-Dlog4j.configurationFile=log4j2.xml", "-server", "-Xms128M", "-XX:+UseCompressedOops", "-XX:+TieredCompilation", "-XX:TargetSurvivorRatio=90", "-XX:SurvivorRatio=8", "-XX:MaxTenuringThreshold=15", "-XX:+UnlockExperimentalVMOptions", "-XX:+UseBiasedLocking", "-XX:UseSSE=3", "-XX:+UseCodeCacheFlushing", "-XX:+UseThreadPriorities", "-XX:+AggressiveOpts", "-XX:+ReduceSignalUsage", "-XX:+UseInterpreter", "-XX:+UseSharedSpaces", "-XX:AllocatePrefetchStyle=1", "-XX:+AlwaysCompileLoopMethods", "-XX:+UseConcMarkSweepGC", "-XX:+RewriteFrequentPairs", "-XX:+OptimizeStringConcat", "-XX:+CMSCleanOnEnter", "-XX:+UseInlineCaches");
-    private static final List<String> JVM8_ARGS = Arrays.asList("-XX:ThreadPriorityPolicy=42", "-XX:SharedReadOnlySize=30m", "-XX:+UseFastEmptyMethods", "-XX:+UseFastAccessorMethods");
     private static final String ARENA_PATH =  BACKBONE + "arenaserver/";
     private static final String SERVER_PATH = BACKBONE + "server/";
     private static final String EVENT_PATH = BACKBONE + "event/";
@@ -91,6 +87,7 @@ public class SubserverSystem {
      */
     public static synchronized Subserver startArena(ArenaMode modus, String map, int eventFightID, int checkSchemID, int prepareSchemID, String serverName, String mapName, UUID player1, UUID player2, boolean ranked){
         //Generate missing parameters
+        Node node = eventFightID > 0 ? Node.local : Node.getNode();
         int port = freePort(FIRST_ARENA_PORT);
 
         if(serverName == null){
@@ -109,56 +106,31 @@ public class SubserverSystem {
             worldDir = ARENA_PATH;
 
         //Copy world
-        try {
+        node.execute("cp", "-r", SERVER_PATH + modus.getFolder() + "/arenas/" + map, worldDir + mapName);
-            new ProcessBuilder("cp", "-r", SERVER_PATH + modus.getFolder() + "/arenas/" + map, worldDir + mapName).start().waitFor();
-        } catch (IOException e) {
-            throw new SecurityException("Could not copy folder", e);
-        } catch (InterruptedException e) {
-            ProxyServer.getInstance().getLogger().log(Level.SEVERE, "Interrupted while copying folder", e);
-            Thread.currentThread().interrupt();
-        }
 
         File directory = new File(SERVER_PATH, modus.getFolder());
-        List<String> cmd = serverStartCommand(
+        ProcessBuilder builder = node.startServer(
-                modus.serverJar(),
+                modus.serverJar(), directory, worldDir, mapName, port, "2G",
-                directory,
+                "logPath=" + mapName, "config=" + modus.getConfig(),
-                worldDir,
+                "fightID=" + eventFightID, "ranked=" + ranked,
-                mapName,
+                "checkSchemID=" + checkSchemID, "prepareSchemID=" + prepareSchemID,
-                port,
-                "2G",
-                "logPath=" + mapName,
-                "config="+modus.getConfig(),
-                "fightID=" + eventFightID,
-                "ranked=" + ranked,
-                "checkSchemID=" + checkSchemID,
-                "prepareSchemID=" + prepareSchemID,
                 player1 != null && eventFightID != -1 ? "blueLeader=" + player1 : null,
-                player2 != null ? "redLeader=" + player2 : null);
+                player2 != null ? "redLeader=" + player2 : null
-
+        );
-        //Start server
-        ProcessBuilder process = new ProcessBuilder(cmd);
-        process.directory(directory);
 
         String finalMapName = mapName;
         if(eventFightID == -1)
-            return new Bauserver(serverName, player1, port, process, () -> deleteFolder(ARENA_PATH + finalMapName));
+            return new Bauserver(serverName, player1, port, builder, () -> deleteFolder(node, ARENA_PATH + finalMapName));
         else
-            return new Subserver(Servertype.ARENA, serverName, port, process, () -> {
+            return new Subserver(Servertype.ARENA, serverName, port, builder, () -> {
                 if(eventFightID > 0)
                     return;
-                deleteFolder(ARENA_PATH + finalMapName);
+                deleteFolder(node, ARENA_PATH + finalMapName);
             });
     }
 
-    public static void deleteFolder(String worldName){
+    public static void deleteFolder(Node node, String worldName){
-        try {
+        node.execute("rm", "-r", worldName);
-            new ProcessBuilder("rm", "-r", worldName).start().waitFor();
-        } catch (IOException e) {
-            throw new SecurityException("Could not clean up folder", e);
-        } catch (InterruptedException e) {
-            ProxyServer.getInstance().getLogger().log(Level.SEVERE, "Interrupted while deleting folder", e);
-            Thread.currentThread().interrupt();
-        }
     }
 
     public static Subserver startEventArena(EventFight eventFight, String serverName){
@@ -183,25 +155,15 @@ public class SubserverSystem {
         if(bauRunning(p, owner))
             return;
 
+        copyBauweltIfRequired(prototype, worldFolder + worldName);
         SteamwarUser user = SteamwarUser.get(owner);
-        copyBauweltIfRequired(p, prototype, worldFolder + worldName);
+        File directory = new File(SERVER_PATH, serverName);
+        Node node = Node.getNode();
         int port = freePort(4000);
 
-        File directory = new File(SERVER_PATH, serverName);
+        new Bauserver(user.getUserName() + "s Bau", owner, port, node.startServer(
-        List<String> cmd = serverStartCommand(
+                serverJar, directory, worldDir, worldName, port, xmx, "logPath=" + worldName
-                serverJar,
+        ), () -> {}).sendPlayer(p);
-                directory,
-                worldDir,
-                worldName,
-                port,
-                xmx,
-                "logPath=" + worldName);
-
-        //Start server
-        ProcessBuilder process = new ProcessBuilder(cmd);
-        process.directory(directory);
-
-        new Bauserver(user.getUserName() + "s Bau", owner, port, process, () -> {}).sendPlayer(p);
     }
 
     public static void sendToBauServer(ProxiedPlayer p, UUID owner){
@@ -235,63 +197,6 @@ public class SubserverSystem {
                 new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/bau addmember " + p.getName()));
     }
 
-    private static List<String> serverStartCommand(String serverJar, File directory, String worldDir, String levelName, int port, String xmx, String... dParams){
-        List<String> cmd = new ArrayList<>();
-        boolean jdk11 = serverJar.contains("1.15.2");
-
-        boolean fallback = false;
-        if (!steamwarStartAvailable()) {
-            cmd.add("ssh");
-            cmd.add("-L");
-            cmd.add(port + ":localhost:" + port);
-            if (remoteStartAvailable("lx")) {
-                cmd.add("lx");
-            } else if (remoteStartAvailable("az")) {
-                cmd.add("az");
-            } else {
-                fallback = true;
-            }
-            cmd.add("cd");
-            cmd.add(directory.getPath());
-            cmd.add(";");
-        }
-        if (fallback) {
-            cmd.clear();
-        }
-
-        if(jdk11)
-            cmd.add("/usr/lib/jvm/java-11-openjdk-amd64/bin/java");
-        else
-            cmd.add("java");
-
-        for(String param : dParams){
-            cmd.add("-D" + param);
-        }
-        cmd.add("-Xmx" + xmx);
-        cmd.addAll(JVM_ARGS);
-        if(!jdk11)
-            cmd.addAll(JVM8_ARGS);
-        cmd.add("-jar");
-        cmd.add("/binarys/" + serverJar);
-        cmd.add("--log-strip-color");
-        cmd.add("--world-dir");
-        cmd.add(worldDir);
-        cmd.add("--level-name");
-        cmd.add(levelName);
-        cmd.add("--port");
-        cmd.add(String.valueOf(port));
-
-        return cmd;
-    }
-
-    private static boolean steamwarStartAvailable(){
-        return LoadEvaluation.getCPULoad() < 0.7 && LoadEvaluation.getRamPercentage() < 0.8;
-    }
-
-    private static boolean remoteStartAvailable(String remote) {
-        return LoadEvaluation.getRemoteCPULoad(remote) < 0.7 && LoadEvaluation.getRemoteRamPercentage(remote) < 0.8;
-    }
-
     private static boolean bauRunning(ProxiedPlayer p, UUID owner){
         for(Subserver subserver : Subserver.getServerList()){
             if(subserver.getType() == Servertype.BAUSERVER && ((Bauserver)subserver).getOwner().equals(owner)){
@@ -302,20 +207,10 @@ public class SubserverSystem {
         return false;
     }
 
-    private static void copyBauweltIfRequired(ProxiedPlayer p, String sourcePath, String targetPath){
+    private static void copyBauweltIfRequired(String sourcePath, String targetPath){
         File w = new File(targetPath);
-        if (!w.exists() || !w.isDirectory()){
+        if (!w.exists() || !w.isDirectory())
-            try {
+            Node.local.execute("cp", "-r", sourcePath, targetPath);
-                new ProcessBuilder("cp", "-r", sourcePath, targetPath).start().waitFor();
-            } catch (IOException e) {
-                Message.send("SERVER_WORLD_ERROR", p);
-                throw new SecurityException("Could not create Bauwelt", e);
-            } catch (InterruptedException e){
-                BungeeCore.log("Could not create Bauwelt", e);
-                Message.send("SERVER_WORLD_ERROR", p);
-                Thread.currentThread().interrupt();
-            }
-        }
     }
 
     private static int freePort(int start){

src/de/steamwar/bungeecore/bot/AuthManager.java

@@ -27,7 +27,6 @@ import net.dv8tion.jda.api.entities.Emoji;
 import net.dv8tion.jda.api.entities.Member;
 import net.dv8tion.jda.api.interactions.components.ActionRow;
 import net.dv8tion.jda.api.interactions.components.Button;
-import net.md_5.bungee.api.scheduler.ScheduledTask;
 
 import java.util.*;
 import java.util.concurrent.TimeUnit;
@@ -48,11 +47,7 @@ public class AuthManager {
 
         TOKENS.put(code, member.getIdLong());
         BungeeCore.log("Created Discord Auth-Token: " + code + " for: " + member.getUser().getAsTag());
-        ScheduledTask[] task = new ScheduledTask[1];
+        BungeeCore.get().getProxy().getScheduler().schedule(BungeeCore.get(), () -> TOKENS.remove(code), 10, TimeUnit.MINUTES);
-        task[0] = BungeeCore.get().getProxy().getScheduler().schedule(BungeeCore.get(), () -> {
-            TOKENS.remove(code);
-            task[0].cancel();
-        }, 10, 10, TimeUnit.MINUTES);
         return code;
     }
 
@@ -60,16 +55,16 @@ public class AuthManager {
         if (TOKENS.containsKey(code)) {
             Member member = SteamwarDiscordBot.instance().getJda().getGuildById(SteamwarDiscordBotConfig.GUILD).retrieveMemberById(TOKENS.get(code).longValue()).complete();
             if(member == null) return null;
-            user.setDiscordId(member.getId());
+            user.setDiscordId(member.getIdLong());
             MessageBuilder builder = new MessageBuilder();
             builder.setContent(":white_check_mark: Dein Discord Konto wurde mit **" + user.getUserName() + "** verknüpft");
             builder.setActionRows(ActionRow.of(Button.success("tada", Emoji.fromUnicode("U+1F389")), Button.danger("invalid", "Ich war das nicht")));
 
             try {
-                member.getUser().openPrivateChannel().complete().sendMessage(builder.build()).complete();
+                member.getUser().openPrivateChannel().queue(privateChannel -> privateChannel.sendMessage(builder.build()).queue());
                 if (member.getNickname() == null) {
                     try {
-                        member.getGuild().modifyNickname(member, user.getUserName()).complete();
+                        member.getGuild().modifyNickname(member, user.getUserName()).queue();
                     } catch (Exception e) {
                         // Ignored
                     }

src/de/steamwar/bungeecore/bot/SteamwarDiscordBot.java

@@ -44,6 +44,7 @@ import javax.security.auth.login.LoginException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
 
 public class SteamwarDiscordBot {
 
@@ -54,13 +55,13 @@ public class SteamwarDiscordBot {
     }
 
     @Getter
-    private AnnouncementListener announcementListener;
+    private volatile AnnouncementListener announcementListener;
 
     @Getter
-    private IngameChatListener ingameChatListener;
+    private volatile IngameChatListener ingameChatListener;
 
     @Getter
-    private ServerTeamChatListener serverTeamChatListener;
+    private volatile ServerTeamChatListener serverTeamChatListener;
 
     @Getter
     private final JDA jda;
@@ -78,43 +79,48 @@ public class SteamwarDiscordBot {
         } catch (LoginException e) {
             throw new SecurityException("Could not Login: " + SteamwarDiscordBotConfig.TOKEN, e);
         }
-        try {
+        ProxyServer.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
-            jda.awaitReady();
+            try {
-        } catch (InterruptedException e) {
+                jda.awaitReady();
-            e.printStackTrace();
+            } catch (InterruptedException e) {
-        }
+                e.printStackTrace();
-        activity();
+            }
-        EventManager.update();
+            try {
-        SchematicsManager.update();
+                activity();
-        ProxyServer.getInstance().getScheduler().schedule(BungeeCore.get(), () -> {
+            } catch (Exception e) {
-            activity();
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could not set initial activity to discord", e);
+            }
             EventManager.update();
             SchematicsManager.update();
-        }, 30, 30, TimeUnit.SECONDS);
+            ProxyServer.getInstance().getScheduler().schedule(BungeeCore.get(), () -> {
-        DiscordRolesMessage.sendMessage();
+                activity();
-        DiscordRulesMessage.sendMessage();
+                EventManager.update();
-        DiscordTicketMessage.sendMessage();
+                SchematicsManager.update();
+            }, 30, 30, TimeUnit.SECONDS);
+            DiscordRolesMessage.sendMessage();
+            DiscordRulesMessage.sendMessage();
+            DiscordTicketMessage.sendMessage();
+            new RolesInteractionButtonListener();
+            new DiscordTicketListener();
+            new DiscordAuthListener();
+            new DiscordEventListener();
+            announcementListener = new AnnouncementListener();
+            ingameChatListener = new IngameChatListener();
+            serverTeamChatListener = new ServerTeamChatListener();
+            new SlashCommandListener();
+            jda.retrieveCommands().complete().forEach(command -> jda.deleteCommandById(command.getId()).queue());
 
-        new RolesInteractionButtonListener();
+            Guild guild = jda.getGuildById(SteamwarDiscordBotConfig.GUILD);
-        new DiscordTicketListener();
+            guild.retrieveCommands().complete().forEach(command -> guild.deleteCommandById(command.getId()).complete());
-        new DiscordAuthListener();
+            CommandListUpdateAction commands = jda.getGuildById(SteamwarDiscordBotConfig.GUILD).updateCommands();
-        announcementListener = new AnnouncementListener();
+            addCommand(commands, new MuteCommand());
-        ingameChatListener = new IngameChatListener();
+            addCommand(commands, new BanCommand());
-        serverTeamChatListener = new ServerTeamChatListener();
+            addCommand(commands, new WhoisCommand());
-        new SlashCommandListener();
+            addCommand(commands, new TeamCommand());
-
+            addCommand(commands, new ListCommand());
-        jda.retrieveCommands().complete().forEach(command -> jda.deleteCommandById(command.getId()).complete());
+            addCommand(commands, new UnbanCommand());
-
+            commands.complete();
-        Guild guild = jda.getGuildById(SteamwarDiscordBotConfig.GUILD);
+        });
-        guild.retrieveCommands().complete().forEach(command -> guild.deleteCommandById(command.getId()).complete());
-        CommandListUpdateAction commands = jda.getGuildById(SteamwarDiscordBotConfig.GUILD).updateCommands();
-        addCommand(commands, new MuteCommand());
-        addCommand(commands, new BanCommand());
-        addCommand(commands, new WhoisCommand());
-        addCommand(commands, new TeamCommand());
-        addCommand(commands, new ListCommand());
-        addCommand(commands, new UnbanCommand());
-        commands.complete();
     }
 
     private void addCommand(CommandListUpdateAction commands, BasicDiscordCommand basicDiscordCommand) {

src/de/steamwar/bungeecore/bot/commands/BanCommand.java

@@ -45,13 +45,13 @@ public class BanCommand extends BasicDiscordCommand {
         SteamwarUser sender = SteamwarUser.get(event.getMember().getIdLong());
         SteamwarUser target = SteamwarUser.getOrCreateOfflinePlayer(event.getOption("user").getAsString());
         if (target == null) {
-            event.reply("Angegebener User invalide").setEphemeral(true).complete();
+            event.reply("Angegebener User invalide").setEphemeral(true).queue();
             return;
         }
 
         Timestamp time = de.steamwar.bungeecore.commands.BanCommand.parseTime(null, event.getOption("time").getAsString());
         if (time == null) {
-            event.reply("Angegebene Zeit invalide").setEphemeral(true).complete();
+            event.reply("Angegebene Zeit invalide").setEphemeral(true).queue();
             return;
         }
 
@@ -60,6 +60,6 @@ public class BanCommand extends BasicDiscordCommand {
 
         target.ban(time, msg, sender.getId(), isPerma);
         Message.team("BAN_TEAM_BANNED", new Message("PREFIX"), target.getUserName(), sender.getUserName(), new Message((isPerma ? "BAN_PERMA" : "BAN_UNTIL"), time), msg);
-        event.reply("Erfolgreich " + target.getUserName() + (isPerma ? " permanent" : " bis " + time) + " gebannt").setEphemeral(true).complete();
+        event.reply("Erfolgreich " + target.getUserName() + (isPerma ? " permanent" : " bis " + time) + " gebannt").setEphemeral(true).queue();
     }
 }

src/de/steamwar/bungeecore/bot/commands/BasicDiscordCommand.java

@@ -46,7 +46,7 @@ public abstract class BasicDiscordCommand extends CommandData {
         Member member = event.getMember();
         SteamwarUser steamwarUser = SteamwarUser.get(member.getIdLong());
         if (steamwarUser == null || (!steamwarUser.getUserGroup().isTeamGroup() && steamwarUser.getUserGroup() != UserGroup.Builder)) {
-            event.reply("Du hast für " + event.getName() + " keine Rechte oder es existiert keine Verknüpfung für dich.").setEphemeral(true).complete();
+            event.reply("Du hast für " + event.getName() + " keine Rechte oder es existiert keine Verknüpfung für dich.").setEphemeral(true).queue();
             return false;
         }
         return true;

src/de/steamwar/bungeecore/bot/commands/ListCommand.java

@@ -32,12 +32,12 @@ public class ListCommand extends BasicDiscordCommand {
 
     @Override
     public void run(SlashCommandEvent event) {
-        de.steamwar.bungeecore.commands.ListCommand.updateCustomTablist();
+        de.steamwar.bungeecore.commands.ListCommand.getCustomTablist();
         EmbedBuilder embedBuilder = new EmbedBuilder();
         embedBuilder.setTitle("List");
-        de.steamwar.bungeecore.commands.ListCommand.getPlayerMap().forEach((s, proxiedPlayers) -> {
+        de.steamwar.bungeecore.commands.ListCommand.getCustomTablist().forEach((s, proxiedPlayers) -> {
             embedBuilder.addField(s, proxiedPlayers.stream().map(player -> "`" + player.getName() + "`").collect(Collectors.joining(", ")), true);
         });
-        event.replyEmbeds(embedBuilder.build()).setEphemeral(true).complete();
+        event.replyEmbeds(embedBuilder.build()).setEphemeral(true).queue();
     }
 }

src/de/steamwar/bungeecore/bot/commands/MuteCommand.java

@@ -61,6 +61,6 @@ public class MuteCommand extends BasicDiscordCommand {
 
         target.mute(time, msg, sender.getId(), isPerma);
         Message.team("MUTE_TEAM_MUTED", new Message("PREFIX"), target.getUserName(), sender.getUserName(), new Message((isPerma ? "BAN_PERMA" : "BAN_UNTIL"), time), msg);
-        event.reply("Erfolgreich " + target.getUserName() + (isPerma ? " permanent" : " bis " + time) + " gemutet").setEphemeral(true).complete();
+        event.reply("Erfolgreich " + target.getUserName() + (isPerma ? " permanent" : " bis " + time) + " gemutet").setEphemeral(true).queue();
     }
 }

src/de/steamwar/bungeecore/bot/commands/TeamCommand.java

@@ -58,11 +58,11 @@ public class TeamCommand extends BasicDiscordCommand {
                     Team team;
                     if (optionMapping == null) {
                         if (steamwarUser == null) {
-                            event.reply("Dein Discord ist nicht verknüpft").setEphemeral(true).complete();
+                            event.reply("Dein Discord ist nicht verknüpft").setEphemeral(true).queue();
                             return;
                         }
                         if (steamwarUser.getTeam() == 0) {
-                            event.reply("Du bist in keinem Team").setEphemeral(true).complete();
+                            event.reply("Du bist in keinem Team").setEphemeral(true).queue();
                             return;
                         }
                         team = Team.get(steamwarUser.getTeam());
@@ -70,7 +70,7 @@ public class TeamCommand extends BasicDiscordCommand {
                         team = Team.get(optionMapping.getAsString());
                     }
                     if (team == null) {
-                        event.reply("Unbekanntes Team").setEphemeral(true).complete();
+                        event.reply("Unbekanntes Team").setEphemeral(true).queue();
                         return;
                     }
                     EmbedBuilder embedBuilder = new EmbedBuilder();
@@ -81,10 +81,10 @@ public class TeamCommand extends BasicDiscordCommand {
                     embedBuilder.addField("Leader", members.stream().filter(SteamwarUser::isLeader).map(user -> "`" + (isOnline(user) ? emoji.getAsMention() : "") + user.getUserName() + "`").collect(Collectors.joining(" ")), false);
                     embedBuilder.addField("Member", members.stream().filter(user -> !user.isLeader()).map(user -> "`" + (isOnline(user) ? emoji.getAsMention() : "") + user.getUserName() + "`").collect(Collectors.joining(" ")), false);
                     embedBuilder.addField("Events", "`" + TeamTeilnahme.getEvents(team.getTeamId()).stream().map(Event::getEventName).collect(Collectors.joining("` `")) + "`", false);
-                    event.replyEmbeds(embedBuilder.build()).setEphemeral(true).complete();
+                    event.replyEmbeds(embedBuilder.build()).setEphemeral(true).queue();
                     return;
                 default:
-                    event.reply("Unbekannter Befehl").setEphemeral(true).complete();
+                    event.reply("Unbekannter Befehl").setEphemeral(true).queue();
                     return;
             }
         }

src/de/steamwar/bungeecore/bot/commands/UnbanCommand.java

@@ -19,7 +19,6 @@
 
 package de.steamwar.bungeecore.bot.commands;
 
-import de.steamwar.bungeecore.Message;
 import de.steamwar.bungeecore.sql.SteamwarUser;
 import net.dv8tion.jda.api.events.interaction.SlashCommandEvent;
 import net.dv8tion.jda.api.interactions.commands.OptionType;
@@ -44,16 +43,16 @@ public class UnbanCommand extends BasicDiscordCommand {
         SteamwarUser sender = SteamwarUser.get(event.getMember().getIdLong());
         SteamwarUser target = SteamwarUser.getOrCreateOfflinePlayer(event.getOption("user").getAsString());
         if (target == null) {
-            event.reply("Angegebener User invalide").setEphemeral(true).complete();
+            event.reply("Angegebener User invalide").setEphemeral(true).queue();
             return;
         }
 
         if (!target.isBanned()) {
-            event.reply("Angegebener User ist nicht gebannt").setEphemeral(true).complete();
+            event.reply("Angegebener User ist nicht gebannt").setEphemeral(true).queue();
             return;
         }
 
         target.ban(Timestamp.from(new Date().toInstant()), "Unban", sender.getId(), false);
-        event.reply("Erfolgreich " + target.getUserName() + " entbannt").setEphemeral(true).complete();
+        event.reply("Erfolgreich " + target.getUserName() + " entbannt").setEphemeral(true).queue();
     }
 }

src/de/steamwar/bungeecore/bot/commands/WhoisCommand.java

@@ -89,6 +89,6 @@ public class WhoisCommand extends BasicDiscordCommand {
             embedBuilder.addField(punishment.getType().name() + " von " + SteamwarUser.get(punishment.getPunisher()).getUserName(), "Von: " + punishment.getBantime(punishment.getStartTime(), false) + "\nBis: " + punishment.getBantime(punishment.getEndTime(), punishment.isPerma()) + "\nGrund: " + punishment.getReason(), true);
         }
 
-        event.replyEmbeds(embedBuilder.build()).setEphemeral(true).complete();
+        event.replyEmbeds(embedBuilder.build()).setEphemeral(true).queue();
     }
 }

src/de/steamwar/bungeecore/bot/config/SteamwarDiscordBotConfig.java

@@ -29,6 +29,7 @@ import java.util.Map;
 
 public class SteamwarDiscordBotConfig {
 
+    public static boolean loaded = false;
     public static String TOKEN;
     public static String GUILD;
     public static String ANNOUNCEMENTS_CHANNEL;
@@ -110,5 +111,6 @@ public class SteamwarDiscordBotConfig {
         for (String type : ranksSections.getKeys()) {
             RANKS.put(UserGroup.getUsergroup(type), ranksSections.getString(type));
         }
+        loaded = true;
     }
 }

src/de/steamwar/bungeecore/bot/events/EventManager.java

@@ -28,13 +28,17 @@ import de.steamwar.bungeecore.sql.TeamTeilnahme;
 import lombok.experimental.UtilityClass;
 import net.dv8tion.jda.api.EmbedBuilder;
 import net.dv8tion.jda.api.MessageBuilder;
+import net.dv8tion.jda.api.entities.Emoji;
 import net.dv8tion.jda.api.entities.Message;
 import net.dv8tion.jda.api.entities.TextChannel;
+import net.dv8tion.jda.api.interactions.components.ActionRow;
+import net.dv8tion.jda.api.interactions.components.selections.SelectionMenu;
 
 import java.awt.*;
 import java.sql.Timestamp;
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
+import java.util.List;
 import java.util.stream.Collectors;
 
 @UtilityClass
@@ -66,7 +70,12 @@ public class EventManager {
         embedBuilder.setAuthor("SteamWar", "https://www.steamwar.de");
 
         Timestamp now = Timestamp.from(Instant.now());
-        Event.getComing().forEach(event -> {
+        SelectionMenu.Builder menuBuilder = SelectionMenu.create("eventName");
+        menuBuilder.setPlaceholder("Wähle ein Event aus!")
+                .setMinValues(1)
+                .setMaxValues(1);
+        List<Event> events = Event.getComing();
+        events.forEach(event -> {
             StringBuilder st = new StringBuilder();
             if (event.getDeadline().after(now)) {
                 st.append("Deadline: <t:").append(event.getDeadline().getTime() / 1000).append(":R>\n");
@@ -77,10 +86,16 @@ public class EventManager {
                 st.append("\nAngemeldete Teams: ").append(teilname);
             }
             embedBuilder.addField(event.getEventName(), st.toString(), false);
+            if(event.getDeadline().after(Timestamp.from(Instant.now()))) {
+                menuBuilder.addOption(event.getEventName(), event.getEventID() + "", "An " + event.getEventName() + " teilnehmen", Emoji.fromUnicode("U+1F4DD"));
+            }
         });
 
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.setEmbeds(embedBuilder.build());
+        if(!events.isEmpty()) {
+            messageBuilder.setActionRows(ActionRow.of(menuBuilder.build()));
+        }
         if (message == null) {
             message = textChannel.sendMessage(messageBuilder.build()).complete();
         } else {
@@ -119,7 +134,7 @@ public class EventManager {
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.setEmbeds(embedBuilder.build());
         if (message == null) {
-            message = textChannel.sendMessage(messageBuilder.build()).complete();
+            textChannel.sendMessage(messageBuilder.build()).queue(message1 -> message = message1);
         } else {
             message.editMessage(messageBuilder.build()).complete();
         }

src/de/steamwar/bungeecore/bot/events/SchematicsManager.java

@@ -65,9 +65,9 @@ public class SchematicsManager {
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.setEmbeds(embedBuilder.build());
         if (message == null) {
-            message = textChannel.sendMessage(messageBuilder.build()).complete();
+            textChannel.sendMessage(messageBuilder.build()).queue(message1 -> message = message1);
         } else {
-            message.editMessage(messageBuilder.build()).complete();
+            message.editMessage(messageBuilder.build()).queue();
         }
     }
 }

src/de/steamwar/bungeecore/bot/listeners/AnnouncementListener.java

@@ -45,6 +45,6 @@ public class AnnouncementListener extends BasicDiscordListener {
         assert textChannel != null;
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.append(message.replace("&", ""));
-        textChannel.sendMessage(messageBuilder.build()).complete();
+        textChannel.sendMessage(messageBuilder.build()).queue();
     }
 }

src/de/steamwar/bungeecore/bot/listeners/DiscordAuthListener.java

@@ -35,23 +35,23 @@ public class DiscordAuthListener extends BasicDiscordListener {
             if(event.getChannel().getId().equals(SteamwarDiscordBotConfig.RULES_CHANNEL) && event.getComponentId().equals("auth")) {
                 String authMessage = AuthManager.createDiscordAuthToken(event.getMember());
                 if(authMessage != null) {
-                    event.reply("Gebe innerhalb der nächsten 10 Minuten ``/verify " + authMessage + "`` auf dem Minecraft Server ein").setEphemeral(true).complete();
+                    event.reply("Gebe innerhalb der nächsten 10 Minuten ``/verify " + authMessage + "`` auf dem Minecraft Server ein").setEphemeral(true).queue();
                 } else {
-                    event.reply("Du hast bereits einen Code am laufen").setEphemeral(true).complete();
+                    event.reply("Du hast bereits einen Code am laufen").setEphemeral(true).queue();
                 }
             }
 
             if(event.getComponentId().equals("tada") && event.getChannelType() == ChannelType.PRIVATE) {
-                event.reply(":tada:").setEphemeral(false).complete();
+                event.reply(":tada:").setEphemeral(false).queue();
             }
 
             if(event.getComponentId().equals("invalid") && event.getChannelType() == ChannelType.PRIVATE) {
                 SteamwarUser user = SteamwarUser.get(event.getUser().getIdLong());
                 if(user == null) {
-                    event.reply(":question: Da ist keine verknüpfung?").setEphemeral(false).complete();
+                    event.reply(":question: Da ist keine verknüpfung?").setEphemeral(false).queue();
                 } else {
                     user.setDiscordId(null);
-                    event.reply(":x: Die Verknüpfung wurde beendet").setEphemeral(false).complete();
+                    event.reply(":x: Die Verknüpfung wurde beendet").setEphemeral(false).queue();
                 }
             }
         }

src/de/steamwar/bungeecore/bot/listeners/DiscordEventListener.java

@@ -0,0 +1,93 @@
+/*
+    This file is a part of the SteamWar software.
+
+    Copyright (C) 2020  SteamWar.de-Serverteam
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bungeecore.bot.listeners;
+
+import de.steamwar.bungeecore.bot.config.SteamwarDiscordBotConfig;
+import de.steamwar.bungeecore.bot.events.EventManager;
+import de.steamwar.bungeecore.sql.Event;
+import de.steamwar.bungeecore.sql.SteamwarUser;
+import de.steamwar.bungeecore.sql.Team;
+import de.steamwar.bungeecore.sql.TeamTeilnahme;
+import net.dv8tion.jda.api.events.interaction.SelectionMenuEvent;
+import net.dv8tion.jda.api.interactions.components.Component;
+import org.jetbrains.annotations.NotNull;
+
+import java.time.Instant;
+
+public class DiscordEventListener extends BasicDiscordListener {
+
+
+    @Override
+    public void onSelectionMenu(@NotNull SelectionMenuEvent event) {
+        if(event.getChannel().getId().equals(SteamwarDiscordBotConfig.EVENTS_CHANNEL) && event.getComponentType() == Component.Type.SELECTION_MENU) {
+            if(event.getSelectedOptions().isEmpty()) {
+                event.deferReply(true).queue();
+                return;
+            }
+            if(event.getSelectedOptions().get(0).getValue().matches("([0-9]+)")) {
+                SteamwarUser user = SteamwarUser.get(event.getUser().getIdLong());
+                if(user == null) {
+                    event.reply("Du hast dein Minecraft nicht verknüpft").setEphemeral(true).queue();
+                    return;
+                }
+
+                if(user.getTeam() == 0) {
+                    event.reply("Du bist in keinem Team").setEphemeral(true).queue();
+                    return;
+                }
+
+                if(!user.isLeader()) {
+                    event.reply("Du bist kein Leader in deinem Team").setEphemeral(true).queue();
+                    return;
+                }
+
+                if(Event.get() != null) {
+                    event.reply("Du kannst dich nicht während einem Event an einem Event anmelden").setEphemeral(true).queue();
+                    return;
+                }
+
+                Event swEvent = Event.get(Integer.decode(event.getSelectedOptions().get(0).getValue()));
+                if(swEvent == null){
+                    event.reply("Das Event gibt es nicht").setEphemeral(true).queue();
+                    return;
+                }
+
+                if(Instant.now().isAfter(swEvent.getDeadline().toInstant())){
+                    event.reply("Du kannst dich nicht mehr an diesen Event anmelden").setEphemeral(true).queue();
+                    return;
+                }
+
+                Team team = Team.get(user.getTeam());
+
+                if(TeamTeilnahme.nimmtTeil(team.getTeamId(), swEvent.getEventID())){
+                    TeamTeilnahme.notTeilnehmen(team.getTeamId(), swEvent.getEventID());
+                    event.reply("Dein Team **" + team.getTeamName() + "** nimmt nun nicht mehr an **" + swEvent.getEventName() + "** teil!").setEphemeral(true).queue();
+                }else{
+                    TeamTeilnahme.teilnehmen(team.getTeamId(), swEvent.getEventID());
+                    event.reply("Dein Team **" + team.getTeamName() + "** nimmt nun an **" + swEvent.getEventName() + "** teil!").setEphemeral(true).queue();
+                }
+
+                EventManager.update();
+            } else {
+                event.reply("Lefuq?").setEphemeral(true).queue();
+            }
+        }
+    }
+}

src/de/steamwar/bungeecore/bot/listeners/DiscordTicketListener.java

@@ -75,29 +75,40 @@ public class DiscordTicketListener extends BasicDiscordListener {
             } else if(event.getComponentId().startsWith("close-")) {
                 TextChannel logChannel = event.getGuild().getTextChannelById(SteamwarDiscordBotConfig.TICKET_LOG);
 
-                MessageBuilder builder = new MessageBuilder();
+                LinkedList<StringBuilder> stringBuilders = new LinkedList<>();
-                StringBuilder stringBuilder = new StringBuilder();
+                stringBuilders.add(new StringBuilder());
 
                 new LinkedList<>(event.getTextChannel().getIterableHistory().complete()).descendingIterator().forEachRemaining(message -> {
                     if(message.getAuthor().isSystem() || message.getAuthor().isBot()) return;
-                    stringBuilder.append("<t:").append(message.getTimeCreated().toInstant().getEpochSecond()).append("> ")
+                    StringBuilder currentBuilder = new StringBuilder();
+                    currentBuilder.append("<t:").append(message.getTimeCreated().toInstant().getEpochSecond()).append("> ")
                             .append("**")
                             .append(message.getAuthor().getName())
                             .append("**: ")
                             .append(message.getContentRaw());
                     if(!message.getAttachments().isEmpty()) {
-                        stringBuilder.append("\n")
+                        currentBuilder.append("\n")
                                 .append("Files: ").append("\n");
-                        message.getAttachments().forEach(attachment -> stringBuilder.append(attachment.getUrl()).append("\n"));
+                        message.getAttachments().forEach(attachment -> currentBuilder.append(attachment.getUrl()).append("\n"));
                     }
 
-                    stringBuilder.append("\n");
+                    currentBuilder.append("\n");
+                    if(currentBuilder.length() >= 4096) {
+                        stringBuilders.getLast().append(currentBuilder.substring(0, 4090));
+                        stringBuilders.add(new StringBuilder(currentBuilder.substring(4090, currentBuilder.length() - 1)));
+                    } else if (currentBuilder.length() + stringBuilders.getLast().length() >= 4096) {
+                        stringBuilders.add(new StringBuilder(currentBuilder.toString()));
+                    } else {
+                        stringBuilders.getLast().append(currentBuilder);
+                    }
                 });
 
-                stringBuilder.append("\n");
+                String footer = "<t:" + Instant.now().getEpochSecond() + "> **" + event.getUser().getName() + "**: Ticket geschlossen";
-                stringBuilder.append("<t:").append(Instant.now().getEpochSecond()).append("> ")
+                if(stringBuilders.getLast().length() + footer.length() > 4090) {
-                        .append("**").append(event.getUser().getName()).append("**: ")
+                    stringBuilders.add(new StringBuilder(footer));
-                        .append("Ticket geschlossen");
+                } else {
+                    stringBuilders.getLast().append(footer);
+                }
 
                 EmbedBuilder embedBuilder = new EmbedBuilder();
                 embedBuilder.setColor(Color.GREEN);
@@ -107,14 +118,16 @@ public class DiscordTicketListener extends BasicDiscordListener {
                 embedBuilder.setAuthor(user.getName(), swuser==null?"https://steamwar.de/":("https://steamwar.de/users/" + swuser.getUserName().toLowerCase() + "/"), user.getAvatarUrl());
                 embedBuilder.setTimestamp(Instant.now());
                 embedBuilder.setTitle(event.getTextChannel().getName());
-                embedBuilder.setDescription(stringBuilder);
+                stringBuilders.forEach(stringBuilder -> {
+                    embedBuilder.setDescription(stringBuilder.toString());
+                    MessageBuilder builder = new MessageBuilder();
+                    builder.setEmbeds(embedBuilder.build());
 
-                builder.setEmbeds(embedBuilder.build());
+                    logChannel.sendMessage(builder.build()).queue();
-
+                });
-                logChannel.sendMessage(builder.build()).complete();
 
                 Message.team("DISCORD_TICKET_CLOSED", event.getTextChannel().getName());
-                event.getTextChannel().delete().reason("Closed").complete();
+                event.getTextChannel().delete().reason("Closed").queue();
             }
         }
     }
@@ -126,16 +139,15 @@ public class DiscordTicketListener extends BasicDiscordListener {
                 BungeeCore.get().getProxy().getPlayers().forEach(player -> {
                     if(event.getAuthor().isBot() || event.getAuthor().isSystem()) return;
                     SteamwarUser user = SteamwarUser.get(player);
+                    boolean sendMessage;
                     if(user.getDiscordId() == null) {
-                        if(user.getUserGroup().isTeamGroup()) {
+                            sendMessage = user.getUserGroup().isCheckSchematics();
-                            Message.sendPrefixless("DISCORD_TICKET_MESSAGE", player, "Zur nachricht", new ClickEvent(ClickEvent.Action.OPEN_URL, event.getMessage().getJumpUrl()), event.getChannel().getName(), event.getAuthor().getName(), event.getMessage().getContentRaw());
-                        }
                     } else {
                         if(event.getAuthor().getId().equals(user.getDiscordId())) return;
-                        Member member = event.getGuild().retrieveMemberById(user.getDiscordId()).complete();
+                        sendMessage = user.getDiscordId().equals(event.getChannel().getTopic()) || user.getUserGroup().isCheckSchematics();
-                        if(member.hasPermission(event.getChannel().getManager().getChannel(), Permission.MESSAGE_WRITE)) {
+                    }
-                            Message.sendPrefixless("DISCORD_TICKET_MESSAGE", player, "Zur nachricht", new ClickEvent(ClickEvent.Action.OPEN_URL, event.getMessage().getJumpUrl()), event.getChannel().getName(), event.getAuthor().getName(), event.getMessage().getContentRaw());
+                    if(sendMessage) {
-                        }
+                        Message.sendPrefixless("DISCORD_TICKET_MESSAGE", player, "Zur nachricht", new ClickEvent(ClickEvent.Action.OPEN_URL, event.getMessage().getJumpUrl()), event.getChannel().getName(), event.getAuthor().getName(), event.getMessage().getContentRaw());
                     }
                 });
             }

src/de/steamwar/bungeecore/bot/listeners/IngameChatListener.java

@@ -43,15 +43,15 @@ public class IngameChatListener extends BasicDiscordListener {
         Member member = event.getMember();
         SteamwarUser steamwarUser = SteamwarUser.get(member.getIdLong());
         if (steamwarUser == null || event.getMessage().getContentRaw().length() > 250) {
-            event.getMessage().delete().complete();
+            event.getMessage().delete().queue();
         } else {
             String s = event.getMessage().getContentDisplay();
             if (steamwarUser.getUserGroup() == UserGroup.Member && (s.contains("http") || s.contains("www"))) {
-                event.getMessage().delete().complete();
+                event.getMessage().delete().queue();
                 return;
             }
             if (steamwarUser.isMuted() || steamwarUser.isBanned()) {
-                event.getMessage().delete().complete();
+                event.getMessage().delete().queue();
                 return;
             }
             ChatListener.discordChat(steamwarUser, event.getMessage().getContentDisplay().replaceAll("§[a-f0-9]", "").replace('\n', ' '));
@@ -63,6 +63,6 @@ public class IngameChatListener extends BasicDiscordListener {
         assert textChannel != null;
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.append(message.replace("&", "").replace("@everyone", "`@everyone`").replace("@here", "`@here`").replaceAll("<[@#]!?\\d+>", "`$0`"));
-        textChannel.sendMessage(messageBuilder.build()).complete();
+        textChannel.sendMessage(messageBuilder.build()).queue();
     }
 }

src/de/steamwar/bungeecore/bot/listeners/RolesInteractionButtonListener.java

@@ -32,10 +32,10 @@ public class RolesInteractionButtonListener extends BasicDiscordListener {
         if(event.getType() == InteractionType.COMPONENT && event.getChannelType() == ChannelType.TEXT && event.getTextChannel().getId().equals(SteamwarDiscordBotConfig.ROLES_CHANNEL) && SteamwarDiscordBotConfig.ROLES.stream().anyMatch(discordRole -> discordRole.getRoleId().equals(event.getComponentId()))) {
             if (event.getMember().getRoles().stream().anyMatch(role -> role.getId().equals(event.getComponentId()))) {
                 event.getGuild().removeRoleFromMember(event.getMember(), event.getGuild().getRoleById(event.getComponentId())).complete();
-                event.reply(SteamwarDiscordBotConfig.ROLES_REMOVED.replace("%role%", event.getGuild().getRoleById(event.getComponentId()).getAsMention())).setEphemeral(true).complete();
+                event.reply(SteamwarDiscordBotConfig.ROLES_REMOVED.replace("%role%", event.getGuild().getRoleById(event.getComponentId()).getAsMention())).setEphemeral(true).queue();
             } else {
                 event.getGuild().addRoleToMember(event.getMember(), event.getGuild().getRoleById(event.getComponentId())).complete();
-                event.reply(SteamwarDiscordBotConfig.ROLES_ADDED.replace("%role%", event.getGuild().getRoleById(event.getComponentId()).getAsMention())).setEphemeral(true).complete();
+                event.reply(SteamwarDiscordBotConfig.ROLES_ADDED.replace("%role%", event.getGuild().getRoleById(event.getComponentId()).getAsMention())).setEphemeral(true).queue();
             }
         }
     }

src/de/steamwar/bungeecore/bot/listeners/ServerTeamChatListener.java

@@ -22,7 +22,6 @@ package de.steamwar.bungeecore.bot.listeners;
 import de.steamwar.bungeecore.bot.SteamwarDiscordBot;
 import de.steamwar.bungeecore.bot.config.SteamwarDiscordBotConfig;
 import de.steamwar.bungeecore.commands.ServerTeamchatCommand;
-import de.steamwar.bungeecore.listeners.ChatListener;
 import de.steamwar.bungeecore.sql.SteamwarUser;
 import net.dv8tion.jda.api.MessageBuilder;
 import net.dv8tion.jda.api.entities.Member;
@@ -54,6 +53,6 @@ public class ServerTeamChatListener extends BasicDiscordListener {
         assert textChannel != null;
         MessageBuilder messageBuilder = new MessageBuilder();
         messageBuilder.append(message.replace("&", ""));
-        textChannel.sendMessage(messageBuilder.build()).complete();
+        textChannel.sendMessage(messageBuilder.build()).queue();
     }
 }

src/de/steamwar/bungeecore/bot/util/DiscordRanks.java

@@ -22,13 +22,11 @@ package de.steamwar.bungeecore.bot.util;
 import de.steamwar.bungeecore.bot.SteamwarDiscordBot;
 import de.steamwar.bungeecore.bot.config.SteamwarDiscordBotConfig;
 import de.steamwar.bungeecore.sql.SteamwarUser;
-import de.steamwar.bungeecore.sql.UserGroup;
 import lombok.experimental.UtilityClass;
 import net.dv8tion.jda.api.entities.Guild;
-import net.dv8tion.jda.api.entities.Member;
 import net.dv8tion.jda.api.entities.Role;
+import net.dv8tion.jda.api.exceptions.ErrorResponseException;
 
-import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -41,27 +39,31 @@ public class DiscordRanks {
             return;
         }
         Guild guild = SteamwarDiscordBot.instance().getJda().getGuildById(SteamwarDiscordBotConfig.GUILD);
-        Member member = guild.retrieveMemberById(steamwarUser.getDiscordId()).complete();
+        guild.retrieveMemberById(steamwarUser.getDiscordId()).queue(member -> {
-        if (member == null) {
+            List<Role> roleList = member.getRoles();
-            return;
+            Set<String> strings = new HashSet<>(SteamwarDiscordBotConfig.RANKS.values());
-        }
+            String needed = SteamwarDiscordBotConfig.RANKS.get(steamwarUser.getUserGroup());
-
+            for (Role role : roleList) {
-        List<Role> roleList = member.getRoles();
+                if (!strings.contains(role.getId())) {
-        Set<String> strings = new HashSet<>(SteamwarDiscordBotConfig.RANKS.values());
+                    continue;
-        String needed = SteamwarDiscordBotConfig.RANKS.get(steamwarUser.getUserGroup());
+                }
-        for (Role role : roleList) {
+                if (role.getId().equals(needed)) {
-            if (!strings.contains(role.getId())) {
+                    needed = "";
-                continue;
+                    continue;
+                }
+                guild.removeRoleFromMember(member, role).complete();
             }
-            if (role.getId().equals(needed)) {
-                needed = "";
-                continue;
-            }
-            guild.removeRoleFromMember(member, role).complete();
-        }
 
-        if (needed != null && !needed.isEmpty()) {
+            if (needed != null && !needed.isEmpty()) {
-            guild.addRoleToMember(member, guild.getRoleById(needed)).complete();
+                guild.addRoleToMember(member, guild.getRoleById(needed)).complete();
-        }
+            }
+        }, throwable -> {
+            if(throwable instanceof ErrorResponseException) {
+                ErrorResponseException e = (ErrorResponseException) throwable;
+                if(e.getErrorCode() == 10007) {
+                    steamwarUser.setDiscordId(null);
+                }
+            }
+        });
     }
 }

src/de/steamwar/bungeecore/bot/util/DiscordRolesMessage.java

@@ -38,10 +38,6 @@ public class DiscordRolesMessage {
     public void sendMessage() {
         TextChannel channel = SteamwarDiscordBot.instance().getJda().getGuildById(SteamwarDiscordBotConfig.GUILD).getTextChannelById(SteamwarDiscordBotConfig.ROLES_CHANNEL);
         assert channel != null;
-        Message message = null;
-        if(channel.hasLatestMessage()) {
-            message = channel.getIterableHistory().complete().stream().filter(m -> m.getAuthor().isBot()).findFirst().orElse(null);
-        }
 
         MessageBuilder builder = new MessageBuilder();
         builder.setContent(SteamwarDiscordBotConfig.ROLES_BASE_MESSAGE);
@@ -49,10 +45,17 @@ public class DiscordRolesMessage {
         SteamwarDiscordBotConfig.ROLES.forEach(discordRole -> buttons.add(discordRole.toButton()));
         builder.setActionRows(ActionRow.of(buttons));
 
-        if (message != null) {
+        if(channel.hasLatestMessage()) {
-            message.editMessage(builder.build()).complete();
+            channel.getIterableHistory().queue(messages -> {
+                Message message = messages.stream().filter(m -> m.getAuthor().isBot()).findFirst().orElse(null);
+                if (message != null) {
+                    message.editMessage(builder.build()).queue();
+                } else {
+                    channel.sendMessage(builder.build()).queue();
+                }
+            });
         } else {
-            channel.sendMessage(builder.build()).complete();
+            channel.sendMessage(builder.build()).queue();
         }
     }
 }

src/de/steamwar/bungeecore/bot/util/DiscordRulesMessage.java

@@ -60,9 +60,9 @@ public class DiscordRulesMessage {
         messageBuilder.setEmbeds(builder.build());
         messageBuilder.setActionRows(ActionRow.of(buttons), ActionRow.of(authButton));
         if (message != null) {
-            message.editMessage(messageBuilder.build()).complete();
+            message.editMessage(messageBuilder.build()).queue();
         } else {
-            channel.sendMessage(messageBuilder.build()).complete();
+            channel.sendMessage(messageBuilder.build()).queue();
         }
     }
 }

src/de/steamwar/bungeecore/bot/util/DiscordSchemAlert.java

@@ -49,7 +49,7 @@ public class DiscordSchemAlert {
             MessageBuilder messageBuilder = new MessageBuilder();
             messageBuilder.setEmbeds(builder.build());
             try {
-                dcUser.openPrivateChannel().complete().sendMessage(messageBuilder.build()).complete();
+                dcUser.openPrivateChannel().complete().sendMessage(messageBuilder.build()).queue();
             } catch (Exception e) {
                 // Ignored
             }
@@ -70,7 +70,7 @@ public class DiscordSchemAlert {
             messageBuilder.setEmbeds(builder.build());
             messageBuilder.setActionRows(ActionRow.of(Button.success("tada", Emoji.fromUnicode("U+1F389"))));
             try {
-                dcUser.openPrivateChannel().complete().sendMessage(messageBuilder.build()).complete();
+                dcUser.openPrivateChannel().complete().sendMessage(messageBuilder.build()).queue();
             } catch (Exception e) {
                 // Ignored
             }

src/de/steamwar/bungeecore/bot/util/DiscordTicketMessage.java

@@ -56,9 +56,9 @@ public class DiscordTicketMessage {
         messageBuilder.setEmbeds(builder.build());
         messageBuilder.setActionRows(ActionRow.of(buttons));
         if (message != null) {
-            message.editMessage(messageBuilder.build()).complete();
+            message.editMessage(messageBuilder.build()).queue();
         } else {
-            channel.sendMessage(messageBuilder.build()).complete();
+            channel.sendMessage(messageBuilder.build()).queue();
         }
     }
 }

src/de/steamwar/bungeecore/commands/AlertCommand.java

@@ -37,8 +37,33 @@ public class AlertCommand extends BasicCommand {
             return;
         }
 
-        String s = String.join(" ", args);
+        String s;
+        boolean discordAnnounce = false;
+        if (args[0].equals("-discord")) {
+            if (args.length == 1) {
+                Message.send("USAGE_ALERT", sender);
+                return;
+            }
+            discordAnnounce = true;
+            s = join(1, args);
+        } else {
+            s = join(0, args);
+        }
+
         Message.broadcast("ALERT", ChatColor.translateAlternateColorCodes('&', s));
-        SteamwarDiscordBot.instance().getAnnouncementListener().announce(s);
+        if (discordAnnounce) {
+            SteamwarDiscordBot.instance().getAnnouncementListener().announce(s);
+        }
+    }
+
+    private String join(int startIndex, String... strings) {
+        StringBuilder st = new StringBuilder();
+        for (int i = startIndex; i < strings.length; i++) {
+            if (i != startIndex) {
+                st.append(" ");
+            }
+            st.append(strings[i]);
+        }
+        return st.toString();
     }
 }

src/de/steamwar/bungeecore/commands/BauCommand.java

@@ -20,38 +20,38 @@
 package de.steamwar.bungeecore.commands;
 
 import de.steamwar.bungeecore.*;
+import de.steamwar.bungeecore.comms.packets.BaumemberUpdatePacket;
 import de.steamwar.bungeecore.inventory.SWInventory;
 import de.steamwar.bungeecore.inventory.SWItem;
 import de.steamwar.bungeecore.sql.BauweltMember;
 import de.steamwar.bungeecore.sql.SteamwarUser;
+import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.config.ServerInfo;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.event.ChatEvent;
 
-public class BauCommand {
+public class BauCommand extends BasicCommand {
 
-    private BauCommand(){}
+    public BauCommand(){
+        super("bau", null, "b", "gs");
+    }
 
-    public static void onBau(ChatEvent e, String[] command){
+    @Override
-        if(BungeeCore.EVENT_MODE)
+    public void execute(CommandSender sender, String[] args) {
+        if(!(sender instanceof ProxiedPlayer))
             return;
 
-        ProxiedPlayer p = (ProxiedPlayer) e.getSender();
+        ProxiedPlayer p = (ProxiedPlayer) sender;
-        Subserver server = Subserver.getSubserver(p);
-        Bauserver bau = (server != null && server.getType() == Servertype.BAUSERVER) ? (Bauserver)server : null;
-        boolean ownBau = bau != null && bau.getOwner().equals(p.getUniqueId());
-        e.setCancelled(true);
-        BungeeCore.log(p, e.getMessage());
 
-        if(command.length == 1){
+        if(args.length == 0){
-            if(bau15(p, command, 1))
+            if(bau15(p, args, 0))
                 SubserverSystem.sendToBau15(p, p.getUniqueId());
             else
                 SubserverSystem.sendToBauServer(p, p.getUniqueId());
             return;
         }
 
-        switch(command[1].toLowerCase()){
+        switch(args[0].toLowerCase()){
             case "ws":
             case "warship":
             case "12":
@@ -72,52 +72,44 @@ public class BauCommand {
                 SubserverSystem.sendToBau15paper(p, p.getUniqueId());
                 break;
             case "addmember":
-                addmember(p, command);
+                addmember(p, args);
                 break;
             case "tp":
             case "teleport":
-                teleport(p, command);
+                teleport(p, args);
                 break;
             case "info":
-                if (bau != null) {
+                p.chat("/bauinfo");
-                    e.setCancelled(false);
-                }
                 break;
             case "togglewe":
-                if(ownBau && command.length > 2)
+                togglewe(p, args);
-                    e.setCancelled(false);
-                else
-                    togglewe(p, command);
                 break;
             case "toggleworld":
-                if(ownBau && command.length > 2)
+                toggleworld(p, args);
-                    e.setCancelled(false);
-                else
-                    toggleworld(p, command);
                 break;
             case "delmember":
-                delmember(p, command);
+                delmember(p, args);
                 break;
             case "resetall":
             case "delete":
-                delete(p, command);
+                delete(p, args);
                 break;
             case "testarena":
             case "test":
-                testarena(p, command);
+                testarena(p, args);
                 break;
             default:
                 HelpCommand.sendBauHelp(p);
         }
     }
 
-    private static void addmember(ProxiedPlayer p, String[] command){
+    private static void addmember(ProxiedPlayer p, String[] args){
-        if (command.length == 2) {
+        if (args.length == 1) {
             Message.send("BAU_ADDMEMBER_USAGE", p);
             return;
         }
 
-        SteamwarUser target = SteamwarUser.get(command[2]);
+        SteamwarUser target = SteamwarUser.get(args[1]);
         if (target == null) {
             Message.send("UNKNOWN_PLAYER", p);
             return;
@@ -137,13 +129,13 @@ public class BauCommand {
             Message.send("BAU_ADDMEMBER_ADDED_TARGET", z, p.getName());
     }
 
-    private static void teleport(ProxiedPlayer p, String[] command){
+    private static void teleport(ProxiedPlayer p, String[] args){
-        if (command.length == 2) {
+        if (args.length == 1) {
             Message.send("BAU_TP_USAGE", p);
             return;
         }
 
-        SteamwarUser worldOwner = SteamwarUser.get(command[2]);
+        SteamwarUser worldOwner = SteamwarUser.get(args[1]);
         if (worldOwner == null) {
             Message.send("UNKNOWN_PLAYER", p);
             return;
@@ -153,7 +145,7 @@ public class BauCommand {
             return;
         }
 
-        if(bau15(p, command, 3))
+        if(bau15(p, args, 2))
             SubserverSystem.sendToBau15(p, worldOwner.getUuid());
         else
             SubserverSystem.sendToBauServer(p, worldOwner.getUuid());
@@ -183,31 +175,43 @@ public class BauCommand {
         }
     }
 
-    private static void togglewe(ProxiedPlayer p, String[] command){
+    private static void togglewe(ProxiedPlayer p, String[] args){
-        BauweltMember target = toggle(p, command, "togglewe");
+        BauweltMember target = toggle(p, args, "togglewe");
         if(target == null)
             return;
 
         target.setWorldEdit(!target.isWorldEdit());
+        clearMembercache(p);
         isAllowedTo(target.isWorldEdit(), p, target, "WorldEdit verwenden");
     }
 
-    private static void toggleworld(ProxiedPlayer p, String[] command){
+    private static void toggleworld(ProxiedPlayer p, String[] args){
-        BauweltMember target = toggle(p, command, "toggleworld");
+        BauweltMember target = toggle(p, args, "toggleworld");
         if(target == null)
             return;
 
         target.setWorld(!target.isWorld());
+        clearMembercache(p);
         isAllowedTo(target.isWorld(), p, target, "Einstellungen vornehmen");
     }
 
-    private static void delmember(ProxiedPlayer p, String[] command){
+    private static void clearMembercache(ProxiedPlayer p){
-        if (command.length == 2) {
+        for(ServerInfo info : ProxyServer.getInstance().getServers().values()){
+            Subserver server = Subserver.getSubserver(info);
+            if(server != null && server.getType() == Servertype.BAUSERVER && ((Bauserver)server).getOwner().equals(p.getUniqueId())){
+                info.getPlayers().stream().findAny().ifPresent(player -> new BaumemberUpdatePacket().send(player));
+                break;
+            }
+        }
+    }
+
+    private static void delmember(ProxiedPlayer p, String[] args){
+        if (args.length == 1) {
             Message.send("BAU_DELMEMBER_USAGE", p);
             return;
         }
 
-        BauweltMember target = member(p, SteamwarUser.get(command[2]));
+        BauweltMember target = member(p, SteamwarUser.get(args[1]));
         if(target == null)
             return;
 
@@ -228,13 +232,13 @@ public class BauCommand {
         Message.send("BAU_DELMEMBER_DELETED", p);
     }
 
-    private static void delete(ProxiedPlayer p, String[] command){
+    private static void delete(ProxiedPlayer p, String[] args){
         SWInventory inventory = new SWInventory(p, 9, Message.parse("BAU_DELETE_GUI_NAME", p));
         inventory.addItem(8, new SWItem(Message.parse("BAU_DELETE_GUI_CANCEL", p), 1), click ->
             inventory.close()
         );
         inventory.addItem(0, new SWItem(Message.parse("BAU_DELETE_GUI_DELETE", p), 10), click -> {
-            if(bau15(p, command, 2)){
+            if(bau15(p, args, 1)){
                 SteamwarUser user = SteamwarUser.get(p.getUniqueId());
                 deleteWorld(p, BungeeCore.USERWORLDS15 + user.getId());
             }else{
@@ -253,16 +257,16 @@ public class BauCommand {
                     break;
                 }
             }
-            SubserverSystem.deleteFolder(world);
+            SubserverSystem.deleteFolder(Node.local, world);
         });
     }
 
-    public static void stopBauserver(ProxiedPlayer p){
+    public static boolean stopBauserver(ProxiedPlayer p){
         for (Subserver subserver : Subserver.getServerList()) {
             if (subserver.getType() == Servertype.BAUSERVER && ((Bauserver) subserver).getOwner().equals(p.getUniqueId())) {
-                if(subserver.getServer().getPlayers().isEmpty()){
+                if(!subserver.hasStarted()){
                     Message.send("BAU_START_ALREADY", p);
-                    return;
+                    return false;
                 }
                 subserver.stop();
                 try {
@@ -273,12 +277,13 @@ public class BauCommand {
                 break;
             }
         }
+        return true;
     }
 
-    private static void testarena(ProxiedPlayer p, String[] command){
+    private static void testarena(ProxiedPlayer p, String[] args){
-        FightCommand.createArena(p, "/bau testarena ", command, 2, false, (player, mode, map) -> ProxyServer.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
+        FightCommand.createArena(p, "/bau testarena ", args, 1, false, (player, mode, map) -> ProxyServer.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
-            stopBauserver(p);
+            if(stopBauserver(p))
-            SubserverSystem.startTestServer(p, mode, map, 0, 0);
+                SubserverSystem.startTestServer(p, mode, map, 0, 0);
         }));
     }
 
@@ -296,13 +301,13 @@ public class BauCommand {
         return target;
     }
 
-    private static BauweltMember toggle(ProxiedPlayer p, String[] command, String subcommand){
+    private static BauweltMember toggle(ProxiedPlayer p, String[] args, String subcommand){
-        if (command.length == 2) {
+        if (args.length == 1) {
             Message.send("BAU_MEMBER_TOGGLE_USAGE", p, subcommand);
             return null;
         }
 
-        SteamwarUser member = SteamwarUser.get(command[2]);
+        SteamwarUser member = SteamwarUser.get(args[1]);
         return member(p, member);
     }
 

src/de/steamwar/bungeecore/commands/CheckCommand.java

@@ -234,7 +234,10 @@ public class CheckCommand extends BasicCommand {
             this.checkList = checkQuestions.get(schematic.getSchemType()).listIterator();
 
             ProxyServer.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
-                BauCommand.stopBauserver(checker);
+                if(!BauCommand.stopBauserver(checker)){
+                    remove();
+                    return;
+                }
 
                 ArenaMode mode = ArenaMode.getBySchemType(schematic.getSchemType().fightType());
                 SubserverSystem.startTestServer(checker, mode, FightCommand.getMap(checker, mode, "Random"), schematic.getSchemID(), 0);
@@ -323,8 +326,7 @@ public class CheckCommand extends BasicCommand {
         }
 
         private void stop(){
-            currentCheckers.remove(checker.getUniqueId());
+            remove();
-            currentSchems.remove(schematic.getSchemID());
             ProxyServer.getInstance().getScheduler().runAsync(BungeeCore.get(), () -> {
                 for (Subserver subserver : Subserver.getServerList()) {
                     if (subserver.getType() == Servertype.BAUSERVER && ((Bauserver) subserver).getOwner().equals(checker.getUniqueId())) {
@@ -334,5 +336,10 @@ public class CheckCommand extends BasicCommand {
                 }
             });
         }
+
+        private void remove() {
+            currentCheckers.remove(checker.getUniqueId());
+            currentSchems.remove(schematic.getSchemID());
+        }
     }
 }

src/de/steamwar/bungeecore/commands/DevCommand.java

@@ -53,7 +53,7 @@ public class DevCommand extends BasicCommand {
             sendToServer((ProxiedPlayer) sender, server[0], Integer.parseInt(server[1]));
         } else {
             if (args.length == 0) {
-                send(devServer, (ProxiedPlayer) sender, s -> s.equalsIgnoreCase(((ProxiedPlayer) sender).getDisplayName()), () -> Message.send("DEV_UNKNOWN_SERVER", sender));
+                send(devServer, (ProxiedPlayer) sender, s -> s.equalsIgnoreCase(sender.getName()), () -> Message.send("DEV_UNKNOWN_SERVER", sender));
             } else {
                 send(devServer, (ProxiedPlayer) sender, args[0]::equalsIgnoreCase, () -> Message.send("DEV_NO_SERVER", sender));
             }

src/de/steamwar/bungeecore/commands/ListCommand.java

@@ -22,7 +22,6 @@ package de.steamwar.bungeecore.commands;
 import de.steamwar.bungeecore.Message;
 import de.steamwar.bungeecore.Servertype;
 import de.steamwar.bungeecore.Subserver;
-import lombok.Getter;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.config.ServerInfo;
@@ -40,12 +39,8 @@ public class ListCommand extends BasicCommand {
         super("list", "");
     }
 
-    @Getter
+    public static synchronized TreeMap<String, List<ProxiedPlayer>> getCustomTablist(){
-    private static final TreeMap<String, List<ProxiedPlayer>> playerMap = new TreeMap<>();
+        TreeMap<String, List<ProxiedPlayer>> playerMap = new TreeMap<>();
-
-    public static synchronized void updateCustomTablist(){
-        //Calculate server-player-map
-        playerMap.clear();
         for (ProxiedPlayer player : ProxyServer.getInstance().getPlayers()) {
             Server pserver = player.getServer();
             if (pserver == null) //Happens temporarily
@@ -62,11 +57,12 @@ public class ListCommand extends BasicCommand {
             }
         }
         playerMap.forEach((server, players) -> players.sort((proxiedPlayer, t1) -> proxiedPlayer.getName().compareToIgnoreCase(t1.getName())));
+        return playerMap;
     }
 
     @Override
     public void execute(CommandSender commandSender, String[] strings) {
-        updateCustomTablist();
+        TreeMap<String, List<ProxiedPlayer>> playerMap = getCustomTablist();
         for (String server : playerMap.navigableKeySet()) {
             if (server.equals("Bau")) {
                 server = Message.parse("TABLIST_BAU", commandSender);

src/de/steamwar/bungeecore/commands/PollresultCommand.java

@@ -46,7 +46,7 @@ public class PollresultCommand extends BasicCommand {
         ProxiedPlayer player = (ProxiedPlayer) sender;
 
         Map<String, Integer> voted = PollAnswer.getCurrentResults();
-        Message.send("POLLRESULT_HEADER", player, PollAnswer.getAllAnswered(), PollSystem.getQuestion());
+        Message.send("POLLRESULT_HEADER", player, voted.values().stream().reduce(Integer::sum), PollSystem.getQuestion());
         for (Map.Entry<String, Integer> e: voted.entrySet()) {
             Message.send("POLLRESULT_LIST", sender, e.getKey(), e.getValue());
         }

src/de/steamwar/bungeecore/commands/ServerTeamchatCommand.java

@@ -19,6 +19,7 @@
 
 package de.steamwar.bungeecore.commands;
 
+import de.steamwar.bungeecore.BungeeCore;
 import de.steamwar.bungeecore.Message;
 import de.steamwar.bungeecore.bot.SteamwarDiscordBot;
 import de.steamwar.bungeecore.listeners.ChatListener;
@@ -28,6 +29,8 @@ import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
+import java.util.logging.Level;
+
 public class ServerTeamchatCommand extends BasicCommand {
 
     public ServerTeamchatCommand() {
@@ -51,7 +54,11 @@ public class ServerTeamchatCommand extends BasicCommand {
             String msg = msgBuilder.toString();
             msg = ChatColor.translateAlternateColorCodes('&', msg);
 
-            SteamwarDiscordBot.instance().getServerTeamChatListener().send("<t:" + (System.currentTimeMillis() / 1000) + "> " + (player.getName() + "» " + msg).replaceAll("§[a-f0-9r]", ""));
+            try {
+                SteamwarDiscordBot.instance().getServerTeamChatListener().send("<t:" + (System.currentTimeMillis() / 1000) + "> " + (player.getName() + "» " + msg).replaceAll("§[a-f0-9r]", ""));
+            } catch (Exception e) {
+                BungeeCore.get().getLogger().log(Level.SEVERE, "Could not send stc message to discord", e);
+            }
             sendToTeam(msg, player);
         }
     }

src/de/steamwar/bungeecore/commands/StatCommand.java

@@ -19,8 +19,8 @@
 
 package de.steamwar.bungeecore.commands;
 
-import de.steamwar.bungeecore.LoadEvaluation;
 import de.steamwar.bungeecore.Message;
+import de.steamwar.bungeecore.Node;
 import net.md_5.bungee.api.CommandSender;
 
 import java.io.BufferedReader;
@@ -36,34 +36,22 @@ public class StatCommand extends BasicCommand {
 
     @Override
     public void execute(CommandSender sender, String[] args) {
+        Map<String, Integer> serverCount = new HashMap<>();
         try {
             Process process = new ProcessBuilder("ps", "x").start();
-            process.waitFor();
+            new BufferedReader(new InputStreamReader(process.getInputStream())).lines().forEach(s -> {
-            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+                if (!s.contains("--port"))
-            Map<String, Integer> serverCounts = new HashMap<>();
-            bufferedReader.lines().forEach(s -> {
-                if (!s.contains("--port")) {
                     return;
-                }
+                serverCount.compute(
-                String server = "SW";
+                        s.contains("ssh -L") ? s.substring(s.indexOf("ssh -L") + 6).split(" ")[2] : "local",
-                if (s.contains("ssh -L")) {
+                        (server, count) -> (count != null ? count : 0) + 1
-                    server = s.substring(s.indexOf("ssh -L") + 6).split(" ")[2];
+                );
-                }
-                serverCounts.put(server, serverCounts.computeIfAbsent(server, s1 -> 0) + 1);
             });
-            serverCounts.forEach((s, integer) -> {
-                if (s.equals("SW")) {
-                    Message.send("STAT_SERVER", sender, s, LoadEvaluation.getRamPercentage(), LoadEvaluation.getCPULoad(), integer);
-                } else {
-                    Message.send("STAT_SERVER", sender, s.toUpperCase(), LoadEvaluation.getRemoteRamPercentage(s), LoadEvaluation.getRemoteCPULoad(s), integer);
-                }
-            });
-            if (serverCounts.isEmpty()) {
-                Message.send("NO_STATS", sender);
-            }
         } catch (Exception e) {
             throw new SecurityException(e.getMessage(), e);
         }
+
+        Node.forEach(node -> Message.send("STAT_SERVER", sender, node.getName(), node.getLoad(), serverCount.getOrDefault(node.getName(), 0)));
     }
 
 }

src/de/steamwar/bungeecore/commands/TeamCommand.java

@@ -177,7 +177,7 @@ public class TeamCommand extends BasicCommand {
         if(checkTeamName(player, team, args[2]))
             return;
 
-        Team.create(args[1], args[2], user);
+        Team.create(args[1], args[2]);
         user.setTeam(Team.get(args[1]).getTeamId());
         user.setLeader(true);
         Message.send("TEAM_CREATE_CREATED", player, args[2]);

src/de/steamwar/bungeecore/comms/PacketIdManager.java

@@ -25,6 +25,7 @@ public class PacketIdManager {
     public static final byte PING_PACKET = 0x01;
     public static final byte TABLIST_NAME = 0x02;
     public static final byte PREPARE_SCHEM = 0x03;
+    public static final byte BAUMEMBER_UPDATE = 0x04;
 
     //0x1(X) Bungee Inventory
     public static final byte INVENTORY_PACKET = 0x10;

src/de/steamwar/bungeecore/comms/packets/BaumemberUpdatePacket.java

@@ -0,0 +1,36 @@
+/*
+    This file is a part of the SteamWar software.
+
+    Copyright (C) 2020  SteamWar.de-Serverteam
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package de.steamwar.bungeecore.comms.packets;
+
+import com.google.common.io.ByteArrayDataOutput;
+import de.steamwar.bungeecore.comms.BungeePacket;
+import de.steamwar.bungeecore.comms.PacketIdManager;
+
+public class BaumemberUpdatePacket extends BungeePacket {
+    @Override
+    public int getId() {
+        return PacketIdManager.BAUMEMBER_UPDATE;
+    }
+
+    @Override
+    public void writeVars(ByteArrayDataOutput byteArrayDataOutput) {
+        // empty
+    }
+}

src/de/steamwar/bungeecore/listeners/ChatListener.java

@@ -21,8 +21,6 @@ package de.steamwar.bungeecore.listeners;
 
 import de.steamwar.bungeecore.*;
 import de.steamwar.bungeecore.bot.SteamwarDiscordBot;
-import de.steamwar.bungeecore.bot.listeners.IngameChatListener;
-import de.steamwar.bungeecore.commands.BauCommand;
 import de.steamwar.bungeecore.commands.TpCommand;
 import de.steamwar.bungeecore.comms.packets.PingPacket;
 import de.steamwar.bungeecore.sql.SteamwarUser;
@@ -39,6 +37,7 @@ import net.md_5.bungee.event.EventHandler;
 
 import java.util.List;
 import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
 
 public class ChatListener extends BasicListener {
 
@@ -82,11 +81,6 @@ public class ChatListener extends BasicListener {
         }
 
         switch(command[0].toLowerCase()){
-            case "/bau":
-            case "/b":
-            case "/gs":
-                BauCommand.onBau(e, command);
-                break;
             case "/bc":
             case "/bauchat":
             case "/local":
@@ -157,7 +151,7 @@ public class ChatListener extends BasicListener {
                 return;
             }
 
-            if(!sender.hasPermission(ConnectionListener.TEAM_GROUP) && (e.getMessage().contains("http") || e.getMessage().contains("www"))){
+            if(!sender.hasPermission(ConnectionListener.TEAM_GROUP) && (e.getMessage().contains("http:") || e.getMessage().contains("https:") || e.getMessage().contains("www."))){
                 Message.send("CHAT_NO_LINKS", sender);
                 e.setCancelled(true);
                 return;
@@ -210,7 +204,11 @@ public class ChatListener extends BasicListener {
             msg = "§" + team.getTeamColor() + team.getTeamKuerzel() + " §r" + msg;
         }
 
-        SteamwarDiscordBot.instance().getIngameChatListener().send("<t:" + (System.currentTimeMillis() / 1000) + "> " + msg.replaceAll("§[a-f0-9r]", ""));
+        try {
+            SteamwarDiscordBot.instance().getIngameChatListener().send("<t:" + (System.currentTimeMillis() / 1000) + "> " + msg.replaceAll("§[a-f0-9r]", ""));
+        } catch (Exception e) {
+            BungeeCore.get().getLogger().log(Level.SEVERE, "Could not send chat message to discord", e);
+        }
         for(ProxiedPlayer target  : ProxyServer.getInstance().getPlayers()){
             Subserver targetServer = Subserver.getSubserver(target);
             if(!(targetServer == null || targetServer.getType() != Servertype.ARENA || targetServer.getServer() != target.getServer().getInfo())) continue;

src/de/steamwar/bungeecore/sql/BannedUserIPs.java

@@ -19,18 +19,18 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.sql.Timestamp;
 import java.util.ArrayList;
 import java.util.List;
 
 public class BannedUserIPs {
 
-    private int userID;
+    private static final Statement getByID = new Statement("SELECT * FROM BannedUserIPs WHERE UserID = ? ORDER BY Timestamp ASC");
-    private Timestamp timestamp;
+    private static final Statement getByIP = new Statement("SELECT * FROM BannedUserIPs WHERE IP = ? ORDER BY Timestamp DESC");
+    private static final Statement banIP = new Statement("INSERT INTO BannedUserIPs (UserID, Timestamp, IP) VALUES (?, NOW(), ?) ON DUPLICATE KEY UPDATE Timestamp=NOW()");
+
+    private final int userID;
+    private final Timestamp timestamp;
 
     private BannedUserIPs(int userID, Timestamp timestamp){
         this.userID = userID;
@@ -38,37 +38,31 @@ public class BannedUserIPs {
     }
 
     public static List<BannedUserIPs> get(int userID){
-        List<BannedUserIPs> userIPs = new ArrayList<>();
+        return getByID.select(rs -> {
-        ResultSet dbentry = SQL.select("SELECT * FROM BannedUserIPs WHERE UserID = ? ORDER BY Timestamp ASC", userID);
+            List<BannedUserIPs> userIPs = new ArrayList<>();
-        try {
+            while(rs.next()) {
-            while(dbentry.next()){
                 userIPs.add(new BannedUserIPs(
                         userID,
-                        dbentry.getTimestamp("Timestamp")));
+                        rs.getTimestamp("Timestamp")));
             }
-        } catch (SQLException e) {
+            return userIPs;
-            BungeeCore.log("Get BannedUserIPs failed", e);
+        }, userID);
-        }
-        return userIPs;
     }
 
     public static List<BannedUserIPs> get(String ip){
-        List<BannedUserIPs> userIDs = new ArrayList<>();
+        return getByIP.select(rs -> {
-        ResultSet dbentry = SQL.select("SELECT * FROM BannedUserIPs WHERE IP = ? ORDER BY Timestamp DESC", ip);
+            List<BannedUserIPs> userIDs = new ArrayList<>();
-        try {
+            while(rs.next()) {
-            while(dbentry.next()){
                 userIDs.add(new BannedUserIPs(
-                        dbentry.getInt("UserID"),
+                        rs.getInt("UserID"),
-                        dbentry.getTimestamp("Timestamp")));
+                        rs.getTimestamp("Timestamp")));
             }
-        } catch (SQLException e) {
+            return userIDs;
-            BungeeCore.log("Get BannedUserIPs failed", e);
+        }, ip);
-        }
-        return userIDs;
     }
 
     static void banIP(SteamwarUser user, String ip){
-        SQL.update("INSERT INTO BannedUserIPs (UserID, Timestamp, IP) VALUES (?, NOW(), ?) ON DUPLICATE KEY UPDATE Timestamp=NOW()", user.getId(), ip);
+        banIP.update(user.getId(), ip);
     }
 
     public int getUserID() {

src/de/steamwar/bungeecore/sql/BauweltMember.java

@@ -19,15 +19,17 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
 
 public class BauweltMember{
+
+    private static final Statement delete = new Statement("DELETE FROM BauweltMember WHERE BauweltID = ? AND MemberID = ?");
+    private static final Statement update = new Statement("INSERT INTO BauweltMember (BauweltID, MemberID, WorldEdit, World) VALUES (?, ?, ?, ?) ON DUPLICATE KEY UPDATE WorldEdit = VALUES(WorldEdit), World = VALUES(World)");
+    private static final Statement getMember = new Statement("SELECT * FROM BauweltMember WHERE BauweltID = ? AND MemberID = ?");
+    private static final Statement getMembers = new Statement("SELECT * FROM BauweltMember WHERE BauweltID = ?");
+
     private final int bauweltID;
     private final int memberID;
     private boolean worldEdit;
@@ -52,12 +54,11 @@ public class BauweltMember{
     }
 
     public void remove(){
-        SQL.update("DELETE FROM BauweltMember WHERE BauweltID = " + bauweltID + " AND MemberID = " + memberID);
+        delete.update(bauweltID, memberID);
     }
 
     private void updateDB(){
-        SQL.update("INSERT INTO BauweltMember (BauweltID, MemberID, WorldEdit, World) VALUES (?, ?, ?, ?) ON DUPLICATE KEY UPDATE WorldEdit = VALUES(WorldEdit), World = VALUES(World)",
+        update.update(bauweltID, memberID, worldEdit, world);
-                bauweltID, memberID, worldEdit, world);
     }
 
     public static BauweltMember getBauMember(UUID ownerID, UUID memberID){
@@ -65,18 +66,12 @@ public class BauweltMember{
     }
 
     public static BauweltMember getBauMember(int ownerID, int memberID){
-        ResultSet member = SQL.select("SELECT * FROM BauweltMember WHERE BauweltID = ? AND MemberID = ?", ownerID, memberID);
+        return getMember.select(rs -> {
-        try {
+            if(!rs.next())
-            if(member == null || !member.next()){
                 return null;
-            }
+
-            boolean worldEdit = member.getBoolean("WorldEdit");
+            return new BauweltMember(ownerID, memberID, rs.getBoolean("WorldEdit"), rs.getBoolean("World"), false);
-            boolean world = member.getBoolean("World");
+        }, ownerID, memberID);
-            return new BauweltMember(ownerID, memberID, worldEdit, world, false);
-        } catch (SQLException e) {
-            BungeeCore.log("Could not load BauweltMember", e);
-        }
-        return null;
     }
 
     public static List<BauweltMember> getMembers(UUID bauweltID){
@@ -84,20 +79,13 @@ public class BauweltMember{
     }
 
     public static List<BauweltMember> getMembers(int bauweltID){
-        try{
+        return getMembers.select(rs -> {
-            ResultSet memberlist = SQL.select("SELECT * FROM BauweltMember WHERE BauweltID = ?", bauweltID);
             List<BauweltMember> members = new ArrayList<>();
-            while(memberlist.next()){
+            while(rs.next()){
-                int memberID = memberlist.getInt("MemberID");
+                members.add(new BauweltMember(bauweltID, rs.getInt("MemberID"), rs.getBoolean("WorldEdit"), rs.getBoolean("World"), false));
-                boolean worldEdit = memberlist.getBoolean("WorldEdit");
-                boolean world = memberlist.getBoolean("World");
-                members.add(new BauweltMember(bauweltID, memberID, worldEdit, world, false));
             }
             return members;
-        }catch(SQLException e){
+        }, bauweltID);
-            BungeeCore.log("Could not load BauweltMembers", e);
-        }
-        return new ArrayList<>();
     }
 
     public int getBauweltID() {

src/de/steamwar/bungeecore/sql/CheckedSchematic.java

@@ -27,6 +27,9 @@ import java.util.List;
 
 public class CheckedSchematic {
 
+    private static final Statement create = new Statement("INSERT INTO CheckedSchematic (SchemName, SchemOwner, Validator, StartTime, EndTime, DeclineReason) VALUES (?, ?, ?, ?, ?, ?)");
+    private static final Statement previous = new Statement("SELECT * FROM CheckedSchematic WHERE SchemName = ? AND SchemOwner = ? ORDER BY EndTime ASC");
+
     private final String schemName;
     private final int schemOwner;
 
@@ -45,20 +48,16 @@ public class CheckedSchematic {
     }
 
     public static void create(String schemName, int schemOwner, int validator, Timestamp startTime, Timestamp endTime, String reason){
-        SQL.update("INSERT INTO CheckedSchematic (SchemName, SchemOwner, Validator, StartTime, EndTime, DeclineReason) VALUES (?, ?, ?, ?, ?, ?)",
+        create.update(schemName, schemOwner, validator, startTime, endTime, reason);
-                schemName, schemOwner, validator, startTime, endTime, reason);
     }
 
     public static List<CheckedSchematic> previousChecks(String schemName, int schemOwner){
-        ResultSet rs = SQL.select("SELECT * FROM CheckedSchematic WHERE SchemName = ? AND SchemOwner = ? ORDER BY EndTime ASC", schemName, schemOwner);
+        return previous.select(rs -> {
-        List<CheckedSchematic> schematics = new ArrayList<>();
+            List<CheckedSchematic> schematics = new ArrayList<>();
-        try {
             while(rs.next())
                 schematics.add(new CheckedSchematic(rs));
-        } catch (SQLException e) {
+            return schematics;
-            throw new SecurityException("Could not load previous checks", e);
+        }, schemName, schemOwner);
-        }
-        return schematics;
     }
 
     public int getValidator() {

src/de/steamwar/bungeecore/sql/Elo.java

@@ -19,33 +19,26 @@
 
 package de.steamwar.bungeecore.sql;
 
-import java.sql.ResultSet;
-import java.sql.SQLException;
-
 public class Elo {
+
+    private static final Statement elo = new Statement("SELECT Elo FROM Elo WHERE UserID = ? AND GameMode = ?");
+    private static final Statement place = new Statement("SELECT COUNT(*) AS Place FROM Elo WHERE GameMode = ? AND Elo > ?");
+
     private Elo(){}
 
     public static int getElo(int userID, String gameMode){
-        ResultSet rs = SQL.select("SELECT Elo FROM Elo WHERE UserID = ? AND GameMode = ?", userID, gameMode);
+        return elo.select(rs -> {
-        int elo = 1000;
-        try {
             if(rs.next())
-                elo = rs.getInt("Elo");
+                return rs.getInt("Elo");
-        } catch (SQLException e) {
+            return 1000;
-            throw new SecurityException("Could not get Elo", e);
+        }, userID, gameMode);
-        }
-        return elo;
     }
 
     public static int getPlacement(int elo, String gameMode){
-        ResultSet rs = SQL.select("SELECT COUNT(*) AS Place FROM Elo WHERE GameMode = ? AND Elo > ?", gameMode, elo);
+        return place.select(rs -> {
-        try{
+            if(rs.next())
-            if(!rs.next())
+                return rs.getInt("Place");
-                return -1;
+            return -1;
-
+        }, gameMode, elo);
-            return rs.getInt("Place");
-        }catch(SQLException e){
-            throw new SecurityException("Could not get place", e);
-        }
     }
 }

src/de/steamwar/bungeecore/sql/Event.java

@@ -19,17 +19,20 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Timestamp;
 import java.time.Instant;
-import java.util.LinkedList;
+import java.util.ArrayList;
 import java.util.List;
 
 public class Event {
 
+    private static final Statement byCurrent = new Statement("SELECT * FROM Event WHERE Start < now() AND End > now()");
+    private static final Statement byId = new Statement("SELECT * FROM Event WHERE EventID = ?");
+    private static final Statement byName = new Statement("SELECT * FROM Event WHERE lower(EventName) = ?");
+    private static final Statement byComing = new Statement("SELECT * FROM Event WHERE Start > now()");
+
     private final int eventID;
     private final String eventName;
     private final Timestamp start;
@@ -56,57 +59,39 @@ public class Event {
         if(current != null && current.now())
             return current;
 
-        ResultSet rs = SQL.select("SELECT * FROM Event WHERE Start < now() AND End > now()");
+        return byCurrent.select(rs -> {
-        try{
+            if(rs.next())
-            if(!rs.next()){
+                current = new Event(rs);
+            else
                 current = null;
-                return null;
-            }
-
-            current = new Event(rs);
             return current;
-        }catch (SQLException e){
+        });
-            BungeeCore.log("Failed to load current Event", e);
-            throw new SecurityException();
-        }
     }
 
     public static Event get(int eventID){
-        ResultSet rs = SQL.select("SELECT * FROM Event WHERE EventID = " + eventID);
+        return byId.select(rs -> {
-        try{
             if(!rs.next())
-                throw new IllegalArgumentException();
+                throw new SQLException("Couldn't find event " + eventID);
-
             return new Event(rs);
-        }catch (SQLException e){
+        }, eventID);
-            BungeeCore.log("Failed to load Event", e);
-            throw new SecurityException();
-        }
     }
 
     public static Event get(String eventName){
-        ResultSet rs = SQL.select("SELECT * FROM Event WHERE lower(EventName) = ?", eventName.toLowerCase());
+        return byName.select(rs -> {
-        try{
             if(!rs.next())
                 return null;
 
             return new Event(rs);
-        }catch (SQLException e){
+        }, eventName.toLowerCase());
-            BungeeCore.log("Failed to load Event by name", e);
-            throw new SecurityException();
-        }
     }
 
     public static List<Event> getComing(){
-        List<Event> events = new LinkedList<>();
+        return byComing.select(rs -> {
-        ResultSet rs = SQL.select("SELECT * FROM Event WHERE Start > now()");
+            List<Event> events = new ArrayList<>();
-        try{
             while(rs.next())
                 events.add(new Event(rs));
-        }catch (SQLException e){
+            return events;
-            BungeeCore.log("Failed to load Events", e);
+        });
-        }
-        return events;
     }
 
     private boolean now(){

src/de/steamwar/bungeecore/sql/EventFight.java

@@ -20,7 +20,6 @@
 package de.steamwar.bungeecore.sql;
 
 import de.steamwar.bungeecore.ArenaMode;
-import de.steamwar.bungeecore.BungeeCore;
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -31,7 +30,11 @@ import static java.time.temporal.ChronoUnit.SECONDS;
 
 public class EventFight implements Comparable<EventFight> {
 
-    private static Queue<EventFight> fights = new PriorityQueue<>();
+    private static final Statement reschedule = new Statement("UPDATE EventFight SET StartTime = ? WHERE EventID = ? AND FightID = ?");
+    private static final Statement allComing = new Statement("SELECT * FROM EventFight WHERE StartTime > now() ORDER BY `StartTime` ASC");
+    private static final Statement event = new Statement("SELECT * FROM EventFight WHERE EventID = ? ORDER BY `StartTime` ASC");
+
+    private static final Queue<EventFight> fights = new PriorityQueue<>();
 
     private final int eventID;
     private final int fightID;
@@ -57,31 +60,26 @@ public class EventFight implements Comparable<EventFight> {
 
     public void reschedule(){
         startTime = Timestamp.from(new Date().toInstant().plus(30, SECONDS));
-        SQL.update("UPDATE EventFight SET StartTime = ? WHERE EventID = ? AND FightID = ?", startTime, eventID, fightID);
+        reschedule.update(startTime, eventID, fightID);
     }
 
     public static void loadAllComingFights(){
-        ResultSet rs = SQL.select("SELECT * FROM EventFight WHERE StartTime > now() ORDER BY `StartTime` ASC");
+        allComing.select(rs -> {
-        fights.clear();
+            fights.clear();
-        try{
             while(rs.next()){
-                 fights.add(new EventFight(rs));
+                fights.add(new EventFight(rs));
             }
-        }catch (SQLException e){
+            return null;
-            BungeeCore.log("Failed to load EventFights", e);
+        });
-        }
     }
 
     public static List<EventFight> getEvent(int eventID){
-        ResultSet rs = SQL.select("SELECT * FROM EventFight WHERE EventID = ? ORDER BY `StartTime` ASC", eventID);
+        return event.select(rs -> {
-        List<EventFight> fights = new LinkedList<>();
+            List<EventFight> fights = new LinkedList<>();
-        try{
             while(rs.next())
                 fights.add(new EventFight(rs));
-        }catch (SQLException e){
+            return fights;
-            BungeeCore.log("Failed to load EventFights", e);
+        }, eventID);
-        }
-        return fights;
     }
 
     public static Queue<EventFight> getFights() {

src/de/steamwar/bungeecore/sql/IgnoreSystem.java

@@ -22,9 +22,13 @@ package de.steamwar.bungeecore.sql;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
 import java.sql.ResultSet;
-import java.sql.SQLException;
 
 public class IgnoreSystem{
+
+    private static final Statement select = new Statement("SELECT * FROM IgnoredPlayers WHERE Ignorer = ? AND Ignored = ?");
+    private static final Statement insert = new Statement("INSERT INTO IgnoredPlayers (Ignorer, Ignored) VALUES (?, ?)");
+    private static final Statement delete = new Statement("DELETE FROM IgnoredPlayers WHERE Ignorer = ? AND Ignored = ?");
+
     private IgnoreSystem(){}
 
     public static boolean isIgnored(ProxiedPlayer ignorer, ProxiedPlayer ignored){
@@ -34,22 +38,14 @@ public class IgnoreSystem{
     }
 
     public static boolean isIgnored(SteamwarUser ignorer, SteamwarUser ignored) {
-        try {
+        return select.select(ResultSet::next, ignorer.getId(), ignored.getId());
-            ResultSet rs = SQL.select("SELECT COUNT(*) AS blocked FROM IgnoredPlayers WHERE Ignorer = ? AND Ignored = ?", ignorer.getId(), ignored.getId());
-            if(!rs.next())
-                return false;
-
-            return rs.getInt("blocked") > 0;
-        } catch (SQLException e) {
-            throw new SecurityException("Could not check if ignored", e);
-        }
     }
 
     public static void ignore(SteamwarUser ignorer, SteamwarUser ignored) {
-        SQL.update("INSERT INTO IgnoredPlayers (Ignorer, Ignored) VALUES (?, ?)", ignorer.getId(), ignored.getId());
+        insert.update(ignorer.getId(), ignored.getId());
     }
 
     public static void unIgnore(SteamwarUser ignorer, SteamwarUser ignored) {
-        SQL.update("DELETE FROM IgnoredPlayers WHERE Ignorer = ? AND Ignored = ?", ignorer.getId(), ignored.getId());
+        delete.update(ignorer.getId(), ignored.getId());
     }
 }

src/de/steamwar/bungeecore/sql/Mod.java

@@ -19,12 +19,11 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
-import java.sql.ResultSet;
-import java.sql.SQLException;
-
 public class Mod {
+
+    private static final Statement get = new Statement("SELECT * FROM Mods WHERE ModName = ? AND Platform = ?");
+    private static final Statement insert = new Statement("INSERT INTO Mods (ModName, Platform) VALUES (?, ?)");
+
     private final String modName;
     private final Platform platform;
     private final ModType modType;
@@ -36,15 +35,15 @@ public class Mod {
     }
 
     public static Mod get(String modName, Platform platform){
-        ResultSet rs = SQL.select("SELECT * FROM Mods WHERE ModName = ? AND Platform = ?", modName, platform.value);
+        Mod mod = get.select(rs -> {
-        try{
             if(rs.next())
                 return new Mod(modName, platform, ModType.valueOf(rs.getInt("ModType")));
-        }catch (SQLException e){
+            return null;
-            BungeeCore.log("Failed to load Mod", e);
+        }, modName, platform.value);
-            throw new SecurityException();
+        if(mod != null)
-        }
+            return mod;
-        SQL.update("INSERT INTO Mods (ModName, Platform) VALUES (?, ?)", modName, platform.value);
+
+        insert.update(modName, platform.value);
         return new Mod(modName, platform, ModType.UNKLASSIFIED);
     }
 

src/de/steamwar/bungeecore/sql/PollAnswer.java

@@ -19,7 +19,6 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
 import de.steamwar.bungeecore.listeners.PollSystem;
 
 import java.sql.ResultSet;
@@ -29,6 +28,10 @@ import java.util.Map;
 
 public class PollAnswer {
 
+    private static final Statement get = new Statement("SELECT * FROM PollAnswer WHERE UserID = ? AND Question = ?");
+    private static final Statement getResults = new Statement("SELECT Count(UserID) AS Times, Answer FROM PollAnswer WHERE Question = ? GROUP BY Answer ORDER BY `Times` ASC");
+    private static final Statement insert = new Statement("INSERT INTO PollAnswer (UserID, Question, Answer) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE Answer = VALUES(Answer)");
+
     private final int userID;
     private final String question;
     private int answer;
@@ -44,38 +47,20 @@ public class PollAnswer {
     }
 
     public static PollAnswer get(int userID){
-        ResultSet rs = SQL.select("SELECT * FROM PollAnswer WHERE UserID = ? AND Question = ?", userID, PollSystem.getQuestion());
+        return get.select(rs -> {
-        try {
+            if(rs.next())
-            if(!rs.next())
+                return new PollAnswer(rs);
-                return new PollAnswer(userID, PollSystem.getQuestion());
+            return new PollAnswer(userID, PollSystem.getQuestion());
-            return new PollAnswer(rs);
+        }, userID, PollSystem.getQuestion());
-        } catch (SQLException e) {
-            throw new SecurityException("Unable to get PollAnswer", e);
-        }
     }
 
     public static Map<String, Integer> getCurrentResults() {
-        ResultSet set = SQL.select("SELECT Count(UserID) AS Times, Answer FROM PollAnswer WHERE Question = ? GROUP BY Answer ORDER BY `Times` ASC", PollSystem.getQuestion());
+        return getResults.select(rs -> {
-        try {
             Map<String, Integer> retMap = new HashMap<>();
-            while (set.next()) {
+            while (rs.next())
-                retMap.put(PollSystem.getAnswer(set.getInt("Answer")), set.getInt("Times"));
+                retMap.put(PollSystem.getAnswer(rs.getInt("Answer")), rs.getInt("Times"));
-            }
             return retMap;
-        }catch (SQLException e) {
+        }, PollSystem.getQuestion());
-            throw new SecurityException("Unable to get PollAnswer", e);
-        }
-    }
-
-    public static Integer getAllAnswered() {
-        ResultSet set = SQL.select("SELECT Count(UserID) AS Times FROM PollAnswer WHERE Question = ?", PollSystem.getQuestion());
-        try {
-            if(!set.next())
-                throw new SecurityException("Could not get PollAnswers");
-            return set.getInt("Times");
-        }catch (SQLException e) {
-            throw new SecurityException("Unable to get PollAnswer", e);
-        }
     }
 
     public boolean hasAnswered(){
@@ -84,6 +69,6 @@ public class PollAnswer {
 
     public void setAnswer(int answer){
         this.answer = answer;
-        SQL.update("INSERT INTO PollAnswer (UserID, Question, Answer) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE Answer = VALUES(Answer)", userID, question, answer);
+        insert.update(userID, question, answer);
     }
 }

src/de/steamwar/bungeecore/sql/Punishment.java

@@ -31,45 +31,40 @@ import java.util.*;
 
 public class Punishment {
 
+    private static final Statement getPunishment = new Statement("SELECT * FROM Punishments WHERE UserId = ? AND Type = ? ORDER BY PunishmentId DESC LIMIT 1");
+    private static final Statement getPunishments = new Statement("SELECT * FROM Punishments WHERE PunishmentId IN (SELECT MAX(PunishmentId) FROM Punishments WHERE UserId = ? GROUP BY Type)");
+    private static final Statement getAllPunishments = new Statement("SELECT * FROM Punishments WHERE UserId = ? ORDER BY `PunishmentId` DESC");
+    private static final Statement insert = new Statement("INSERT INTO Punishments (UserId, Punisher, Type, Reason, EndTime, Perma) VALUES (?, ?, ?, ?, ?, ?)");
+    private static final Statement update = new Statement("UPDATE Punishments SET EndTime = ?, Reason = ?, Perma = ? WHERE PunishmentId = ?");
+
     public static Punishment getPunishmentOfPlayer(int user, PunishmentType type) {
-        ResultSet set = SQL.select("SELECT * FROM Punishments WHERE UserId = ? AND Type = ? ORDER BY PunishmentId DESC LIMIT 1", user, type.name());
+        return getPunishment.select(rs -> {
-        try {
+            if(rs.next())
-            if(!set.next())
+                return new Punishment(rs);
-                return null;
+            return null;
-            return new Punishment(set);
+        }, user, type.name());
-        } catch (SQLException e) {
-            throw new SecurityException("Could not Load Punishments", e);
-        }
     }
 
     public static Map<PunishmentType, Punishment> getPunishmentsOfPlayer(int user) {
-        ResultSet set = SQL.select("SELECT * FROM Punishments WHERE PunishmentId IN (SELECT MAX(PunishmentId) FROM Punishments WHERE UserId = ? GROUP BY Type)", user);
+        return getPunishments.select(rs -> {
-        try {
             Map<PunishmentType, Punishment> punishments = new HashMap<>();
-            while (set.next())
+            while (rs.next())
-                punishments.put(PunishmentType.valueOf(set.getString("Type")), new Punishment(set));
+                punishments.put(PunishmentType.valueOf(rs.getString("Type")), new Punishment(rs));
             return punishments;
-        } catch (SQLException e) {
+        }, user);
-            throw new SecurityException("Could not Load Punishments", e);
-        }
     }
 
     public static List<Punishment> getAllPunishmentsOfPlayer(int user) {
-        ResultSet set = SQL.select("SELECT * FROM Punishments WHERE UserId = ? ORDER BY `PunishmentId` DESC", user);
+        return getAllPunishments.select(rs -> {
-        try {
             List<Punishment> punishments = new ArrayList<>();
-            while (set.next()) {
+            while (rs.next())
-                punishments.add(new Punishment(set));
+                punishments.add(new Punishment(rs));
-            }
             return punishments;
-        } catch (SQLException e) {
+        }, user);
-            throw new SecurityException("Could not Load all Punishments", e);
-        }
     }
 
     public static Punishment createPunishment(int user, int executor, PunishmentType type, String reason, Timestamp endTime, boolean perma) {
-        SQL.update("INSERT INTO Punishments (UserId, Punisher, Type, Reason, EndTime, Perma) VALUES (?, ?, ?, ?, ?, ?)",
+        insert.update(user, executor, type.name(), reason, endTime, perma);
-                user, executor, type.name(), reason, endTime, perma);
         return getPunishmentOfPlayer(user, type);
     }
 
@@ -122,7 +117,7 @@ public class Punishment {
     }
 
     public void updateEndTime(int from, String newreason, Timestamp newUpdate, boolean perma) {
-        if(newreason.equals(reason) && newUpdate.equals(endTime) && perma == perma)
+        if(newreason.equals(reason) && newUpdate.equals(endTime) && this.perma == perma)
             return;
         ProxiedPlayer player = BungeeCore.get().getProxy().getPlayer(SteamwarUser.get(from).getUuid());
         String newReason = Message.parse("BAN_CHANGED", player, reason,
@@ -131,7 +126,7 @@ public class Punishment {
                 getBantime(newUpdate, perma),
                 newreason);
 
-        SQL.update("UPDATE Punishments SET EndTime = ?, Reason = ?, Perma = ? WHERE PunishmentId = ?", newUpdate, newReason, perma, id);
+        update.update(newUpdate, newReason, perma, id);
         this.reason = newReason;
         this.perma = perma;
         this.endTime = newUpdate;

src/de/steamwar/bungeecore/sql/SQL.java

@@ -1,95 +0,0 @@
-/* 
-    This file is a part of the SteamWar software.
-    
-    Copyright (C) 2020  SteamWar.de-Serverteam
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-package de.steamwar.bungeecore.sql;
-
-import de.steamwar.bungeecore.BungeeCore;
-import net.md_5.bungee.api.ProxyServer;
-
-import java.sql.*;
-
-
-public class SQL {
-    private SQL(){}
-
-    private static Connection con;
-    private static String url;
-    private static String user;
-    private static String password;
-
-    public static void connect(String url, String user, String password) {
-        SQL.url = url;
-        SQL.user = user;
-        SQL.password = password;
-        try {
-            con = DriverManager.getConnection(url + "?autoreconnect=true", user, password);
-        }catch (SQLException e) {
-            ProxyServer.getInstance().stop();
-            throw new SecurityException("Could not start SQL-Exception", e);
-        }
-    }
-
-    public static void close() {
-        try {
-            if(con != null)
-                con.close();
-        }catch (SQLException e) {
-            BungeeCore.log("Could not close SQL-Connection", e);
-        }
-    }
-
-    static void update(String qry, Object... objects) {
-        try {
-            prepare(con, qry, objects).executeUpdate();
-        } catch (SQLException e) {
-            sqlException();
-            try (PreparedStatement st = con.prepareStatement(qry)) {
-                st.executeUpdate();
-            } catch (SQLException ex) {
-                throw new SecurityException("Could not execute update statement", ex);
-            }
-        }
-    }
-
-    static ResultSet select(String qry, Object... objects){
-        try{
-            return prepare(con, qry, objects).executeQuery();
-        } catch (SQLException e) {
-            sqlException();
-            try {
-                return prepare(con, qry, objects).executeQuery();
-            } catch (SQLException ex) {
-                throw new SecurityException("Could not run Select-Statement", ex);
-            }
-        }
-    }
-
-    private static PreparedStatement prepare(Connection connection, String qry, Object... objects) throws SQLException{
-        PreparedStatement st = connection.prepareStatement(qry);
-        for(int i = 0; i < objects.length; i++){
-            st.setObject(i+1, objects[i]);
-        }
-        return st;
-    }
-
-    private static void sqlException(){
-        close();
-        connect(url, user, password);
-    }
-}

src/de/steamwar/bungeecore/sql/SWException.java

@@ -22,7 +22,9 @@ package de.steamwar.bungeecore.sql;
 public class SWException {
     private SWException(){}
 
+    private static final Statement insert = new Statement("INSERT INTO Exception (server, message, stacktrace) VALUES (?, ?, ?)");
+
     public static void log(String server, String message, String stacktrace){
-        SQL.update("INSERT INTO Exception (server, message, stacktrace) VALUES (?, ?, ?)", server, message, stacktrace);
+        insert.update(server, message, stacktrace);
     }
 }

src/de/steamwar/bungeecore/sql/Schematic.java

@@ -23,14 +23,22 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.UUID;
 
 public class Schematic {
+
+    private static final Statement schemByName = new Statement("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemName = ? AND SchemOwner = ?");
+    private static final Statement schemById = new Statement("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemID = ?");
+    private static final Statement schemsByType = new Statement("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemType = ?");
+    private static final Statement schemsByUserType = new Statement("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemType = ? AND SchemOwner = ?");
+    private static final Statement schemsOfUser = new Statement("SELECT SchemID, SchemName, SchemOwner, Item, SchemType, Rank, SchemFormat, Item FROM Schematic WHERE SchemOwner = ? ORDER BY SchemName");
+    private static final Statement updateType = new Statement("UPDATE Schematic SET SchemType = ? WHERE SchemID = ?");
+    private static final Statement updateRank = new Statement("UPDATE Schematic SET Rank = ? WHERE SchemID = ?");
+
     private final int schemID;
     private final String schemName;
     private final int schemOwner;
     private SchematicType schemType;
-    private String schemItem;
+    private final String schemItem;
 
     private Schematic(ResultSet rs) throws SQLException {
         this.schemID = rs.getInt("SchemID");
@@ -40,74 +48,52 @@ public class Schematic {
         this.schemItem = rs.getString("Item");
     }
 
-    public static Schematic getSchemFromDB(String schemName, UUID schemOwner){
-        return getSchemFromDB(schemName, SteamwarUser.get(schemOwner).getId());
-    }
-
     public static Schematic getSchemFromDB(String schemName, int schemOwner){
-        ResultSet schematic = SQL.select("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemName = ? AND SchemOwner = ?", schemName, schemOwner);
+        return schemByName.select(rs -> {
-        try {
+            if(!rs.next())
-            if(schematic == null || !schematic.next()){
+                return new Schematic(rs);
-                return null;
+            return null;
-            }
+        }, schemName, schemOwner);
-            return new Schematic(schematic);
-        } catch (SQLException e) {
-            throw new SecurityException("Failed loading schematic", e);
-        }
     }
 
     public static Schematic getSchemFromDB(int schemID){
-        ResultSet schematic = SQL.select("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemID = ?", schemID);
+        return schemById.select(rs -> {
-        try {
+            if(!rs.next())
-            if(!schematic.next())
                 throw new SecurityException("Failed loading schematic " + schemID);
-            return new Schematic(schematic);
+            return new Schematic(rs);
-        } catch (SQLException e) {
+        }, schemID);
-            throw new SecurityException("Failed loading schematic", e);
-        }
     }
 
     public static List<Schematic> getAllSchemsOfType(SchematicType schemType){
-        try{
+        return schemsByType.select(rs -> {
-            ResultSet schematic = SQL.select("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemType = ?", schemType.toDB());
             List<Schematic> schematics = new ArrayList<>();
-            while(schematic.next()){
+            while(rs.next())
-                schematics.add(new Schematic(schematic));
+                schematics.add(new Schematic(rs));
-            }
             return schematics;
-        }catch(SQLException e){
+        }, schemType.toDB());
-            throw new SecurityException("Failed loading all schems of type", e);
-        }
     }
 
     public static List<Schematic> getSchemsOfType(int userId, SchematicType schemType){
-        try{
+        return schemsByUserType.select(rs -> {
-            ResultSet schematic = SQL.select("SELECT SchemID, SchemName, SchemOwner, SchemType, Item FROM Schematic WHERE SchemType = ? AND SchemOwner = ?", schemType.toDB(), userId);
             List<Schematic> schematics = new ArrayList<>();
-            while(schematic.next()){
+            while(rs.next())
-                schematics.add(new Schematic(schematic));
+                schematics.add(new Schematic(rs));
-            }
             return schematics;
-        }catch(SQLException e){
+        }, schemType.toDB(), userId);
-            throw new SecurityException("Failed loading schems of type", e);
-        }
     }
 
     public static List<Schematic> getSchemsAccessibleByUser(int schemOwner){
-        try{
+        return schemsOfUser.select(rs -> {
-            ResultSet schematic = SQL.select("SELECT SchemID, SchemName, SchemOwner, Item, SchemType, Rank, SchemFormat, Item FROM Schematic WHERE SchemOwner = ? ORDER BY SchemName", schemOwner);
             List<Schematic> schematics = new ArrayList<>();
-            while(schematic.next()){
+            while(rs.next()){
-                schematics.add(new Schematic(schematic));
+                schematics.add(new Schematic(rs));
             }
             List<SchematicMember> addedSchems = SchematicMember.getAccessibleSchems(schemOwner);
             for(SchematicMember schem : addedSchems){
                 schematics.add(getSchemFromDB(schem.getSchemName(), schem.getSchemOwner()));
             }
             return schematics;
-        }catch(SQLException e){
+        }, schemOwner);
-            throw new SecurityException("Failed listing schematics", e);
-        }
     }
 
     public int getSchemID() {
@@ -132,10 +118,10 @@ public class Schematic {
 
     public void setSchemType(SchematicType schemType) {
         this.schemType = schemType;
-        SQL.update("UPDATE Schematic SET SchemType = ? WHERE SchemID = ?", schemType.toDB(), schemID);
+        updateType.update(schemType.toDB(), schemID);
     }
 
     public void setRank(int rank) {
-        SQL.update("UPDATE Schematic SET Rank = ? WHERE SchemID = ?", rank, schemID);
+        updateRank.update(rank, schemID);
     }
 }

src/de/steamwar/bungeecore/sql/SchematicMember.java

@@ -19,13 +19,15 @@
 
 package de.steamwar.bungeecore.sql;
 
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.UUID;
 
 public class SchematicMember {
+
+    private static final Statement insert = new Statement("INSERT INTO SchemMember (SchemName, SchemOwner, Member) VALUES (?, ?, ?)");
+    private static final Statement selectSchems = new Statement("SELECT * FROM SchemMember WHERE Member = ?");
+    private static final Statement delete = new Statement("DELETE FROM SchemMember WHERE SchemOwner = ? AND SchemName = ? AND Member = ?");
+
     private final int schemOwner;
     private final String schemName;
     private final int member;
@@ -38,82 +40,17 @@ public class SchematicMember {
             updateDB();
     }
 
-    public SchematicMember(String schemName, int schemOwner, int schemMember){
-        this(schemName, schemOwner, schemMember, true);
-    }
-
-    public SchematicMember(String schemName, UUID schemOwner, UUID schemMember){
-        this(schemName, SteamwarUser.get(schemOwner).getId(), SteamwarUser.get(schemMember).getId(), true);
-    }
-
     private void updateDB(){
-        SQL.update("INSERT INTO SchemMember (SchemName, SchemOwner, Member) VALUES (?, ?, ?)", schemName, schemOwner, member);
+        insert.update(schemName, schemOwner, member);
-    }
-
-    public static SchematicMember getSchemMemberFromDB(String schemName, UUID schemOwner, UUID schemMember){
-        return getSchemMemberFromDB(schemName, SteamwarUser.get(schemOwner).getId(), SteamwarUser.get(schemMember).getId());
-    }
-
-    public static SchematicMember getSchemMemberFromDB(String schemName, int schemOwner, int schemMember){
-        ResultSet schematicMember = SQL.select("SELECT * FROM SchemMember WHERE SchemName = ? AND SchemOwner = ? AND Member = ?", schemName, schemOwner, schemMember);
-        try {
-            if(schematicMember == null || !schematicMember.next()){
-                return null;
-            }
-            return new SchematicMember(schemName, schemOwner, schemMember, false);
-        } catch (SQLException e) {
-            throw new SecurityException("Could not get schemmember", e);
-        }
-    }
-
-    public static SchematicMember getMemberBySchematic(String schemName, int schemMember){
-        ResultSet schematicMember = SQL.select("SELECT * FROM SchemMember WHERE SchemName = ? AND Member = ?", schemName, schemMember);
-        try {
-            if(schematicMember == null || !schematicMember.next()){
-                return null;
-            }
-            int schemOwner = schematicMember.getInt("SchemOwner");
-            return new SchematicMember(schemName, schemOwner, schemMember, false);
-        } catch (SQLException e) {
-            throw new SecurityException("Could not get member", e);
-        }
-    }
-
-    public static List<SchematicMember> getSchemMembers(String schemName, UUID schemOwner){
-        return getSchemMembers(schemName, SteamwarUser.get(schemOwner).getId());
-    }
-
-    public static List<SchematicMember> getSchemMembers(String schemName, int schemOwner){
-        ResultSet schematicMember = SQL.select("SELECT * FROM SchemMember WHERE SchemName = ? AND SchemOwner = ?", schemName, schemOwner);
-        try {
-            List<SchematicMember> schematicMembers = new ArrayList<>();
-            while(schematicMember.next()){
-                int schemMember = schematicMember.getInt("Member");
-                schematicMembers.add(new SchematicMember(schemName, schemOwner, schemMember, false));
-            }
-            return schematicMembers;
-        } catch (SQLException e) {
-            throw new SecurityException("Could not get schemmembers", e);
-        }
-    }
-
-    public static List<SchematicMember> getAccessibleSchems(UUID schemMember){
-        return getAccessibleSchems(SteamwarUser.get(schemMember).getId());
     }
 
     public static List<SchematicMember> getAccessibleSchems(int schemMember){
-        ResultSet schematicMember = SQL.select("SELECT * FROM SchemMember WHERE Member = ?", schemMember);
+        return selectSchems.select(rs -> {
-        try {
             List<SchematicMember> schematicMembers = new ArrayList<>();
-            while(schematicMember.next()){
+            while(rs.next())
-                String schemName = schematicMember.getString("SchemName");
+                schematicMembers.add(new SchematicMember(rs.getString("SchemName"), rs.getInt("SchemOwner"), schemMember, false));
-                int schemOwner = schematicMember.getInt("SchemOwner");
-                schematicMembers.add(new SchematicMember(schemName, schemOwner, schemMember, false));
-            }
             return schematicMembers;
-        } catch (SQLException e) {
+        }, schemMember);
-            throw new SecurityException("Could not get accessible schems", e);
-        }
     }
 
     public int getSchemOwner() {
@@ -129,6 +66,6 @@ public class SchematicMember {
     }
 
     public void remove(){
-        SQL.update("DELETE FROM SchemMember WHERE SchemOwner = ? AND SchemName = ? AND Member = ?", schemOwner, schemName, member);
+        delete.update(schemOwner, schemName, member);
     }
 }

src/de/steamwar/bungeecore/sql/Session.java

@@ -22,9 +22,12 @@ package de.steamwar.bungeecore.sql;
 import java.sql.Timestamp;
 
 public class Session {
+
+    private static final Statement insert = new Statement("INSERT INTO Session (UserID, StartTime, EndTime) VALUES (?, ?, NOW())");
+
     private Session(){}
 
     public static void insertSession(int userID, Timestamp startTime){
-        SQL.update("INSERT INTO Session (UserID, StartTime, EndTime) VALUES (?, ?, NOW())", userID, startTime);
+        insert.update(userID, startTime);
     }
 }

src/de/steamwar/bungeecore/sql/Statement.java

@@ -0,0 +1,145 @@
+/*
+    This file is a part of the SteamWar software.
+
+    Copyright (C) 2020  SteamWar.de-Serverteam
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bungeecore.sql;
+
+import de.steamwar.bungeecore.BungeeCore;
+import net.md_5.bungee.api.ProxyServer;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Level;
+
+public class Statement {
+    private static final List<Statement> statements = new ArrayList<>();
+
+    private static Connection con;
+    private static String url;
+    private static String user;
+    private static String password;
+
+    public static void connect(String url, String user, String password) {
+        Statement.url = url;
+        Statement.user = user;
+        Statement.password = password;
+        try {
+            con = DriverManager.getConnection(url + "?autoReconnect=true&useServerPrepStmts=true", user, password);
+        } catch (SQLException e) {
+            ProxyServer.getInstance().stop();
+            throw new SecurityException("Could not start SQL-Connection", e);
+        }
+    }
+
+    private static void reset() {
+        close();
+        connect(url, user, password);
+        try {
+            for (Statement statement : statements) {
+                statement.init();
+            }
+        } catch (SQLException e) {
+            throw new SecurityException("Could not reprepare SQL statements", e);
+        }
+    }
+
+    public static void close() {
+        synchronized (statements) {
+            for (Statement statement : statements) {
+                try {
+                    statement.st.close();
+                } catch (SQLException e) {
+                    BungeeCore.get().getLogger().log(Level.INFO, "Could not close statement", e);
+                }
+            }
+
+            try {
+                con.close();
+            } catch (SQLException e) {
+                BungeeCore.get().getLogger().log(Level.INFO, "Could not close SQL connection", e);
+            }
+        }
+    }
+
+    public static boolean connectionStable() {
+        try {
+            return !con.isClosed();
+        } catch (SQLException e) {
+            return false;
+        }
+    }
+
+    private final String sql;
+    private PreparedStatement st;
+
+    Statement(String sql) {
+        this.sql = sql;
+        statements.add(this);
+        try {
+            init();
+        } catch (SQLException e) {
+            throw new SecurityException("Could not init SQL statement", e);
+        }
+    }
+
+    private void init() throws SQLException {
+        st = con.prepareStatement(sql);
+    }
+
+    <T> T select(ResultSetUser<T> user, Object... objects) {
+        synchronized (statements) {
+            return prepare(() -> {
+                ResultSet rs = st.executeQuery();
+                T result = user.use(rs);
+                rs.close();
+                return result;
+            }, objects);
+        }
+    }
+
+    void update(Object... objects) {
+        synchronized (statements) {
+            prepare(st::executeUpdate, objects);
+        }
+    }
+
+    private <T> T prepare(SQLRunnable<T> runnable, Object... objects) {
+        try {
+            setObjects(objects);
+            return runnable.run();
+        } catch (SQLException e) {
+            reset();
+            throw new SecurityException("Could not execute SQL statement", e);
+        }
+    }
+
+    private void setObjects(Object... objects) throws SQLException {
+        for (int i = 0; i < objects.length; i++) {
+            st.setObject(i + 1, objects[i]);
+        }
+    }
+
+    interface ResultSetUser<T> {
+        T use(ResultSet rs) throws SQLException;
+    }
+
+    private interface SQLRunnable<T> {
+        T run() throws SQLException;
+    }
+}

src/de/steamwar/bungeecore/sql/SteamwarUser.java

@@ -24,16 +24,14 @@ import de.steamwar.bungeecore.BungeeCore;
 import de.steamwar.bungeecore.Message;
 import de.steamwar.bungeecore.commands.WebregisterCommand;
 import de.steamwar.bungeecore.listeners.ConnectionListener;
-import java.io.IOException;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.util.Scanner;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
+import java.io.IOException;
 import java.net.InetAddress;
+import java.net.URL;
 import java.net.UnknownHostException;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -41,27 +39,44 @@ import java.sql.Timestamp;
 import java.time.format.DateTimeFormatter;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Scanner;
 import java.util.UUID;
+import java.util.logging.Level;
 
 
 public class SteamwarUser {
-    private final int id;
+
-    private final UUID uuid;
+    private static final Statement updateName = new Statement("UPDATE UserData SET UserName = ? WHERE id = ?");
-    private String userName;
+    private static final Statement updateBedrock = new Statement("UPDATE UserData SET Bedrock = ? WHERE id = ?");
-    private UserGroup userGroup;
+    private static final Statement insert = new Statement("INSERT INTO UserData (UUID, UserName, UserGroup) VALUES (?, ?, 'Member')");
-    private int team;
+    private static final Statement byUUID = new Statement("SELECT * FROM UserData WHERE UUID = ?");
-    private boolean leader;
+    private static final Statement byName = new Statement("SELECT * FROM UserData WHERE lower(UserName) = ?");
-    private Map<Punishment.PunishmentType, Punishment> punishments;
+    private static final Statement byID = new Statement("SELECT * FROM UserData WHERE id = ?");
-    private String discordId;
+    private static final Statement byDiscord = new Statement("SELECT * FROM UserData WHERE DiscordId = ?");
+    private static final Statement updateTeam = new Statement("Update UserData SET Team = ? WHERE id = ?");
+    private static final Statement updateDiscord = new Statement("Update UserData SET DiscordId = ? WHERE id = ?");
+    private static final Statement deleteIPs = new Statement("DELETE FROM BannedUserIPs WHERE UserID = ?");
+    private static final Statement updateLeader = new Statement("Update UserData SET Leader = ? WHERE id = ?");
+    private static final Statement getPlaytime = new Statement("SELECT SUM(UNIX_TIMESTAMP(EndTime) - UNIX_TIMESTAMP(StartTime)) as Playtime FROM Session WHERE UserID = ?");
+    private static final Statement getFirstjoin = new Statement("SELECT MIN(StartTime) AS FirstJoin FROM Session WHERE UserID = ?");
 
     private static final Map<String, SteamwarUser> usersByName = new HashMap<>();
     private static final Map<UUID, SteamwarUser> usersByUUID = new HashMap<>();
     private static final Map<Integer, SteamwarUser> usersById = new HashMap<>();
-    private static final Map<String, SteamwarUser> usersByDiscord = new HashMap<>();
+    private static final Map<Long, SteamwarUser> usersByDiscord = new HashMap<>();
     private static final InetAddress LIXFEL_DE;
     private static final String API_URL = "https://api.mojang.com/users/profiles/minecraft/";
     private static final JsonParser jsonParser = new JsonParser();
 
+    private final int id;
+    private final UUID uuid;
+    private String userName;
+    private final UserGroup userGroup;
+    private int team;
+    private boolean leader;
+    private final Map<Punishment.PunishmentType, Punishment> punishments;
+    private Long discordId;
+
     static {
         try {
             LIXFEL_DE = InetAddress.getByAddress(new byte[]{(byte) 195, (byte) 201, (byte) 242, 43});
@@ -78,12 +93,16 @@ public class SteamwarUser {
         userGroup = UserGroup.getUsergroup(rs.getString("UserGroup"));
         team = rs.getInt("Team");
         leader = rs.getBoolean("Leader");
-        discordId = rs.getString("DiscordId");
+        discordId = rs.getLong("DiscordId");
+        if(rs.wasNull()) {
+            discordId = null;
+        }
         usersById.put(id, this);
         usersByName.put(userName.toLowerCase(), this);
         usersByUUID.put(uuid, this);
-        if(discordId != null)
+        if(discordId != null) {
             usersByDiscord.put(discordId, this);
+        }
         punishments = Punishment.getPunishmentsOfPlayer(id);
     }
 
@@ -93,7 +112,7 @@ public class SteamwarUser {
         if(user != null){
             String userName = connection.getName();
             if(!user.userName.equals(userName)){
-                SQL.update("UPDATE UserData SET UserName = ? WHERE id = ?", userName, user.id);
+                updateName.update(userName, user.id);
                 WebregisterCommand.changeUsername(user.userName, userName);
                 user.userName = userName;
             }
@@ -105,7 +124,7 @@ public class SteamwarUser {
         }
 
         boolean bedrock = connection.getAddress().getAddress().equals(LIXFEL_DE);
-        SQL.update("UPDATE UserData SET Bedrock = ? WHERE id = ?", bedrock, user.id);
+        updateBedrock.update(bedrock, user.id);
         return user;
     }
 
@@ -115,7 +134,7 @@ public class SteamwarUser {
             return user;
         }
 
-        UUID uuid = SteamwarUser.loadUUID(name);
+        UUID uuid = SteamwarUser.getUUIDofOfflinePlayer(name);
         if (uuid == null) {
             return null;
         }
@@ -124,21 +143,29 @@ public class SteamwarUser {
     }
 
     private static SteamwarUser createUserInDatabase(UUID uuid, String name) {
-        SQL.update("INSERT INTO UserData (UUID, UserName, UserGroup) VALUES (?, ?, 'Member')", uuid.toString(), name);
+        insert.update(uuid.toString(), name);
-        return dbInit(SQL.select("SELECT * FROM UserData WHERE UUID = ?", uuid.toString()));
+        return get(uuid);
     }
 
     public static SteamwarUser get(String userName){
         userName = userName.toLowerCase();
         if(usersByName.containsKey(userName))
             return usersByName.get(userName);
-        return dbInit(SQL.select("SELECT * FROM UserData WHERE lower(UserName) = ?", userName));
+        return byName.select(rs -> {
+            if(rs.next())
+                return new SteamwarUser(rs);
+            return null;
+        }, userName);
     }
 
     public static SteamwarUser get(UUID uuid){
         if(usersByUUID.containsKey(uuid))
             return usersByUUID.get(uuid);
-        return dbInit(SQL.select("SELECT * FROM UserData WHERE UUID = ?", uuid.toString()));
+        return byUUID.select(rs -> {
+            if(rs.next())
+                return new SteamwarUser(rs);
+            return null;
+        }, uuid.toString());
     }
 
     public static SteamwarUser get(ProxiedPlayer player){
@@ -148,13 +175,20 @@ public class SteamwarUser {
     public static SteamwarUser get(int id){
         if(usersById.containsKey(id))
             return usersById.get(id);
-        return dbInit(SQL.select("SELECT * FROM UserData WHERE id = ?", id));
+        return byID.select(rs -> {
+            rs.next();
+            return new SteamwarUser(rs);
+        }, id);
     }
 
     public static SteamwarUser get(Long discordId) {
-        if(usersByDiscord.containsKey(discordId.toString()))
+        if(usersByDiscord.containsKey(discordId))
-            return usersByDiscord.get(discordId.toString());
+            return usersByDiscord.get(discordId);
-        return dbInit(SQL.select("SELECT * FROM UserData WHERE DiscordId = ?", discordId));
+        return byDiscord.select(rs -> {
+            if(rs.next())
+                return new SteamwarUser(rs);
+            return null;
+        }, discordId);
     }
 
     public static void clearCache(){
@@ -164,25 +198,20 @@ public class SteamwarUser {
         usersByDiscord.clear();
     }
 
-    public static UUID loadUUID(String playerName) {
+    private static UUID getUUIDofOfflinePlayer(String playerName) {
         try {
             final URL url = new URL(API_URL + playerName);
-            return getUniqueIdFromString(jsonParser.parse(new Scanner(url.openConnection().getInputStream()).nextLine()).getAsJsonObject().get("id").getAsString());
+            String uuid = jsonParser.parse(new Scanner(url.openConnection().getInputStream()).nextLine()).getAsJsonObject().get("id").getAsString();
-        } catch (MalformedURLException e) {
+            return UUID.fromString(uuid.replaceFirst("(\\w{8})(\\w{4})(\\w{4})(\\w{4})(\\w{12})", "$1-$2-$3-$4-$5"));
-            e.printStackTrace();
         } catch (IOException e) {
-            e.printStackTrace();
+            BungeeCore.get().getLogger().log(Level.SEVERE, "Could not get offline player UUID", e);
+            return null;
         }
-        return null;
-    }
-
-    private static UUID getUniqueIdFromString(String uuid) {
-        return UUID.fromString(uuid.replaceFirst("(\\w{8})(\\w{4})(\\w{4})(\\w{4})(\\w{12})", "$1-$2-$3-$4-$5"));
     }
 
     public void setTeam(int team){
         this.team = team;
-        SQL.update("Update UserData SET Team = ? WHERE id = ?", team, id);
+        updateTeam.update(team, id);
         setLeader(false);
     }
 
@@ -210,14 +239,14 @@ public class SteamwarUser {
         return punishments.getOrDefault(type, null);
     }
 
-    public String getDiscordId() {
+    public Long getDiscordId() {
         return discordId;
     }
 
-    public void setDiscordId(String discordId) {
+    public void setDiscordId(Long discordId) {
         usersByDiscord.remove(this.discordId);
         this.discordId = discordId;
-        SQL.update("Update UserData SET DiscordId = ? WHERE id = ?", discordId, id);
+        updateDiscord.update(discordId, id);
         if(discordId != null) {
             usersByDiscord.put(discordId, this);
         }
@@ -227,7 +256,7 @@ public class SteamwarUser {
         if(!punishments.containsKey(Punishment.PunishmentType.Ban))
             return false;
         if(!punishments.get(Punishment.PunishmentType.Ban).isCurrent()) {
-            SQL.update("DELETE FROM BannedUserIPs WHERE UserID = ?", id);
+            deleteIPs.update(id);
             punishments.remove(Punishment.PunishmentType.Ban);
             return false;
         }
@@ -298,38 +327,20 @@ public class SteamwarUser {
         punishments.put(Punishment.PunishmentType.Mute, Punishment.createPunishment(id, from, Punishment.PunishmentType.Mute, muteReason, time, perma));
     }
 
-    private static SteamwarUser dbInit(ResultSet rs){
-        try {
-            if(!rs.next())
-                return null;
-            return new SteamwarUser(rs);
-        } catch (SQLException e) {
-            throw new SecurityException(e);
-        }
-    }
-
     public double getOnlinetime() {
-        ResultSet set = SQL.select("SELECT SUM(UNIX_TIMESTAMP(EndTime) - UNIX_TIMESTAMP(StartTime)) as Playtime FROM Session WHERE UserID = ?", id);
+        return getPlaytime.select(rs -> {
-        try {
+            if(rs.next())
-            if(!set.next())
+                return rs.getBigDecimal("Playtime").doubleValue();
-                return 0;
+            return 0.0;
-            return set.getBigDecimal("Playtime").doubleValue();
+        }, id);
-        } catch (SQLException throwables) {
-            throw new SecurityException("Could not load Online Time", throwables);
-        } catch (NullPointerException e) { //When no Sessions are recorded
-            return 0;
-        }
     }
 
     public Timestamp getFirstjoin() {
-        ResultSet set = SQL.select("SELECT MIN(StartTime) AS FirstJoin FROM Session WHERE UserID = ?", id);
+        return getFirstjoin.select(rs -> {
-        try {
+            if(rs.next())
-            if(!set.next())
+                return rs.getTimestamp("FirstJoin");
-                return null;
+            return null;
-            return set.getTimestamp("FirstJoin");
+        }, id);
-        } catch (SQLException throwables) {
-            throw new SecurityException("Could not load First Join");
-        }
     }
 
     public boolean isLeader() {
@@ -338,6 +349,6 @@ public class SteamwarUser {
 
     public void setLeader(boolean leader) {
         this.leader = leader;
-        SQL.update("Update UserData SET Leader = ? WHERE id = ?", leader, id);
+        updateLeader.update(leader, id);
     }
 }

src/de/steamwar/bungeecore/sql/Team.java

@@ -19,25 +19,31 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
-import static de.steamwar.bungeecore.sql.SQL.select;
-
 public class Team {
+
+    private static final Statement insert = new Statement("INSERT INTO Team (TeamKuerzel, TeamName) VALUES (?, ?)");
+    private static final Statement delete = new Statement("UPDATE Team SET TeamDeleted = 1 WHERE TeamID = ?");
+    private static final Statement update = new Statement("INSERT INTO Team (TeamID, TeamKuerzel, TeamName, TeamColor) VALUES (?, ?, ?, ?) ON DUPLICATE KEY UPDATE TeamName = VALUES(TeamName), TeamKuerzel = VALUES(TeamKuerzel), TeamColor = VALUES(TeamColor)");
+    private static final Statement getSize = new Statement("SELECT COUNT(id) FROM UserData WHERE Team = ?");
+    private static final Statement getMembers = new Statement("SELECT id FROM UserData WHERE Team = ?");
+    private static final Statement byId = new Statement("SELECT * FROM Team WHERE TeamID = ?");
+    private static final Statement byName = new Statement("SELECT * FROM Team WHERE (lower(TeamName) = ? OR lower(TeamKuerzel) = ?) AND NOT TeamDeleted");
+    private static final Statement all = new Statement("SELECT * FROM Team WHERE NOT TeamDeleted");
+
+    private static final List<Team> teamCache = new LinkedList<>();
+    private static final Team pub = new Team(0, "PUB", "Öffentlich", "8");
+
     private final int teamId;
     private String teamKuerzel;
     private String teamName;
     private String teamColor;
 
-    private static final List<Team> teamCache = new LinkedList<>();
-    private static final Team pub = new Team(0, "PUB", "Öffentlich", "8");
-
     private Team(int id, String kuerzel, String name, String color){
         teamId = id;
         teamKuerzel = kuerzel;
@@ -52,8 +58,8 @@ public class Team {
         this(rs.getInt("TeamID"), rs.getString("TeamKuerzel"), rs.getString("TeamName"), rs.getString("TeamColor"));
     }
 
-    public static void create(String kuerzel, String name, SteamwarUser user){
+    public static void create(String kuerzel, String name){
-        SQL.update("INSERT INTO Team (TeamKuerzel, TeamName) VALUES (?, ?)", kuerzel, name);
+        insert.update(kuerzel, name);
     }
 
     public static Team get(int id){
@@ -64,51 +70,38 @@ public class Team {
         for(Team team : teamCache)
             if(team.teamId == id)
                 return team;
-        return load(select("SELECT * FROM Team WHERE TeamID = ?", id));
+        return byId.select(rs -> {
+            rs.next();
+            return new Team(rs);
+        }, id);
     }
 
     public static Team get(String name){
         for(Team team : teamCache)
-            if(team.teamName.equalsIgnoreCase(name))
+            if(team.teamName.equalsIgnoreCase(name) || team.teamKuerzel.equalsIgnoreCase(name))
                 return team;
-        for(Team team : teamCache)
+        return byName.select(rs -> {
-            if(team.teamKuerzel.equalsIgnoreCase(name))
+            if(rs.next())
-                return team;
+                return new Team(rs);
-        return load(select("SELECT * FROM Team WHERE (lower(TeamName) = ? OR lower(TeamKuerzel) = ?) AND NOT TeamDeleted", name.toLowerCase(), name.toLowerCase()));
+            return null;
+        }, name.toLowerCase(), name.toLowerCase());
     }
 
     public static List<Team> getAll(){
         clearCache();
-        try{
+        return all.select(rs -> {
-            ResultSet rs = select("SELECT * FROM Team WHERE NOT TeamDeleted");
-            if(rs == null)
-                return teamCache;
-
             while(rs.next())
                 new Team(rs);
-        } catch (SQLException e) {
+            return teamCache;
-            BungeeCore.log("Could not get all Teams", e);
+        });
-        }
-        return teamCache;
     }
 
     public static void clearCache(){
         teamCache.clear();
     }
 
-    private static Team load(ResultSet dbteam){
-        try {
-            if(!dbteam.next())
-                return null;
-            return new Team(dbteam);
-        } catch (SQLException e) {
-            BungeeCore.log("Could not load Team", e);
-            return null;
-        }
-    }
-
     private void updateDB(){
-        SQL.update("INSERT INTO Team (TeamID, TeamKuerzel, TeamName, TeamColor) VALUES (?, ?, ?, ?) ON DUPLICATE KEY UPDATE TeamName = VALUES(TeamName), TeamKuerzel = VALUES(TeamKuerzel), TeamColor = VALUES(TeamColor)", teamId, teamKuerzel, teamName, teamColor);
+        update.update(teamId, teamKuerzel, teamName, teamColor);
     }
 
     public int getTeamId() {
@@ -143,33 +136,24 @@ public class Team {
     }
 
     public int size(){
-        ResultSet rs = select("SELECT COUNT(id) FROM UserData WHERE Team = ?", teamId);
+        return getSize.select(rs -> {
-        try {
             rs.next();
             return rs.getInt("COUNT(id)");
-        }catch (SQLException e) {
+        }, teamId);
-            BungeeCore.log("Could not get Teamsize", e);
-            return 1000;
-        }
     }
 
     public void disband(SteamwarUser user){
         user.setLeader(false);
-        SQL.update("UPDATE Team SET TeamDeleted = 1 WHERE TeamID = ?", teamId);
+        delete.update(teamId);
         teamCache.remove(this);
     }
 
     public List<Integer> getMembers(){
-        try{
+        return getMembers.select(rs -> {
-            ResultSet memberlist = select("SELECT id FROM UserData WHERE Team = ?", teamId);
             List<Integer> members = new ArrayList<>();
-            while(memberlist.next()){
+            while(rs.next())
-                members.add(memberlist.getInt("id"));
+                members.add(rs.getInt("id"));
-            }
             return members;
-        }catch(SQLException e){
+        }, teamId);
-            BungeeCore.log("Could not get Teammembers", e);
-        }
-        return new ArrayList<>();
     }
 }

src/de/steamwar/bungeecore/sql/TeamTeilnahme.java

@@ -19,55 +19,46 @@
 
 package de.steamwar.bungeecore.sql;
 
-import de.steamwar.bungeecore.BungeeCore;
-
 import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.HashSet;
 import java.util.Set;
 
 public class TeamTeilnahme {
     private TeamTeilnahme(){}
 
+    private static final Statement insert = new Statement("INSERT INTO TeamTeilnahme (TeamID, EventID) VALUES (?, ?)");
+    private static final Statement delete = new Statement("DELETE FROM TeamTeilnahme WHERE TeamID = ? AND EventID = ?");
+    private static final Statement byEventTeam = new Statement("SELECT * FROM TeamTeilnahme WHERE TeamID = ? AND EventID = ?");
+    private static final Statement byEvent = new Statement("SELECT * FROM TeamTeilnahme WHERE EventID = ?");
+    private static final Statement byTeam = new Statement("SELECT * FROM TeamTeilnahme WHERE TeamID = ?");
+
     public static void teilnehmen(int teamID, int eventID){
-        SQL.update("INSERT INTO TeamTeilnahme (TeamID, EventID) VALUES (?, ?)", teamID, eventID);
+        insert.update(teamID, eventID);
     }
 
     public static void notTeilnehmen(int teamID, int eventID){
-        SQL.update("DELETE FROM TeamTeilnahme WHERE TeamID = ? AND EventID = ?", teamID, eventID);
+        delete.update(teamID, eventID);
     }
 
     public static boolean nimmtTeil(int teamID, int eventID){
-        ResultSet rs = SQL.select("SELECT * FROM TeamTeilnahme WHERE TeamID = ? AND EventID = ?", teamID, eventID);
+        return byEventTeam.select(ResultSet::next, teamID, eventID);
-        try{
-            return rs.next();
-        }catch (SQLException e){
-            BungeeCore.log("Failed to load TeamTeilnahme", e);
-            throw new SecurityException();
-        }
     }
 
     public static Set<Team> getTeams(int eventID){
-        Set<Team> teams = new HashSet<>();
+        return byEvent.select(rs -> {
-        ResultSet rs = SQL.select("SELECT * FROM TeamTeilnahme WHERE EventID = ?", eventID);
+            Set<Team> teams = new HashSet<>();
-        try{
             while(rs.next())
                 teams.add(Team.get(rs.getInt("TeamID")));
-        }catch (SQLException e){
+            return teams;
-            BungeeCore.log("Failed to load TeamTeilnahmen", e);
+        }, eventID);
-        }
-        return teams;
     }
 
     public static Set<Event> getEvents(int teamID){
-        Set<Event> events = new HashSet<>();
+        return byTeam.select(rs -> {
-        ResultSet rs = SQL.select("SELECT * FROM TeamTeilnahme WHERE TeamID = ?", teamID);
+            Set<Event> events = new HashSet<>();
-        try{
             while(rs.next())
                 events.add(Event.get(rs.getInt("EventID")));
-        }catch (SQLException e){
+            return events;
-            BungeeCore.log("Failed to load TeamTeilnahmen", e);
+        }, teamID);
-        }
-        return events;
     }
 }

src/de/steamwar/messages/BungeeCore.properties

@@ -107,8 +107,7 @@ MOD_YELLOW_PLUR=§7Deaktiviere die Mods\n§e{0}\n§7um weiter auf §eSteam§8War
 
 #Various commands
 ALERT=§f{0}
-STAT_SERVER=§7Server §f{0} - §7Ram §f{1} §7CPU §f{2} §7Server Count §f{3}
+STAT_SERVER=§7Server §e{0}§8: §7Load §e{1} §7Serveranzahl §e{2}
-NO_STATS=§7Kein Bau oder Fight Server gestartet
 
 #Ban&Mute-Command
 BAN_TEAM_BANNED={0} §c{1} wurde von {2} {3} gebannt. §f§lGrund: §f{4}

steamwarci.yml

@@ -0,0 +1,6 @@
+build:
+  - "ln -s /home/gitea/lib"
+  - "mvn package -B"
+
+artifacts:
+  "/binarys/bungeecore.jar": "target/bungeecore.jar"