Merge pull request #109 from DerTyan/exception-handling

Added ExceptionManager for custom exception handling
2021-01-21 06:06:27 +01:00 · 2021-01-21 06:06:27 +01:00 · 1cd3228c06
parent d83abcef85 855c8af455
commit 1cd3228c06
38 changed files with 152 additions and 59 deletions
--- a/src/main/java/net/minestom/server/MinecraftServer.java
+++ b/src/main/java/net/minestom/server/MinecraftServer.java
@ -9,6 +9,7 @@ import net.minestom.server.data.SerializableData;
 import net.minestom.server.entity.EntityType;
 import net.minestom.server.entity.Player;
 import net.minestom.server.event.GlobalEventHandler;
+import net.minestom.server.exception.ExceptionManager;
 import net.minestom.server.extensions.Extension;
 import net.minestom.server.extensions.ExtensionManager;
 import net.minestom.server.fluids.Fluid;
@ -99,6 +100,8 @@ public final class MinecraftServer {
    private static int nettyThreadCount = Runtime.getRuntime().availableProcessors();
    private static boolean processNettyErrors = false;

+    private static ExceptionManager exceptionManager;
+
    // In-Game Manager
    private static ConnectionManager connectionManager;
    private static InstanceManager instanceManager;
@ -140,6 +143,10 @@ public final class MinecraftServer {
    public static MinecraftServer init() {
        if (minecraftServer != null) // don't init twice
            return minecraftServer;
+
+        // Initialize the ExceptionManager at first
+        exceptionManager = new ExceptionManager();
+
        extensionManager = new ExtensionManager();

        // warmup/force-init registries
@ -401,6 +408,16 @@ public final class MinecraftServer {
        return benchmarkManager;
    }

+    /**
+     * Gets the exception manager for exception handling.
+     *
+     * @return the exception manager
+     */
+    public static ExceptionManager getExceptionManager() {
+        checkInitStatus(exceptionManager);
+        return exceptionManager;
+    }
+
    /**
     * Gets the manager handling server connections.
     *
--- a/src/main/java/net/minestom/server/UpdateManager.java
+++ b/src/main/java/net/minestom/server/UpdateManager.java
@ -80,7 +80,7 @@ public final class UpdateManager {
                doTickCallback(tickEndCallbacks, tickTime / 1000000L);

            } catch (Exception e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        }, 0, MinecraftServer.TICK_MS, TimeUnit.MILLISECONDS);
    }
@ -103,7 +103,7 @@ public final class UpdateManager {
            try {
                future.get();
            } catch (Throwable e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        }
    }
--- a/src/main/java/net/minestom/server/benchmark/BenchmarkManager.java
+++ b/src/main/java/net/minestom/server/benchmark/BenchmarkManager.java
@ -67,7 +67,7 @@ public final class BenchmarkManager {
                try {
                    Thread.sleep(time);
                } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(e);
                }
            }

--- a/src/main/java/net/minestom/server/command/CommandManager.java
+++ b/src/main/java/net/minestom/server/command/CommandManager.java
@ -2,6 +2,7 @@ package net.minestom.server.command;

 import it.unimi.dsi.fastutil.ints.IntArrayList;
 import it.unimi.dsi.fastutil.ints.IntList;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.command.builder.Command;
 import net.minestom.server.command.builder.CommandDispatcher;
 import net.minestom.server.command.builder.CommandSyntax;
@ -63,7 +64,7 @@ public final class CommandManager {
                        execute(consoleSender, command);
                    }
                } catch (IOException e) {
-                    e.printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(e);
                    continue;
                }

@ -71,14 +72,14 @@ public final class CommandManager {
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(e);
                }

            }
            try {
                bi.close();
            } catch (IOException e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        }, "ConsoleCommand-Thread");
        consoleThread.setDaemon(true);
--- a/src/main/java/net/minestom/server/data/Data.java
+++ b/src/main/java/net/minestom/server/data/Data.java
@ -1,5 +1,6 @@
 package net.minestom.server.data;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@ -126,7 +127,7 @@ public abstract class Data implements PublicCloneable<Data> {
        try {
            return (Data) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            throw new IllegalStateException("Weird thing happened");
        }
    }
--- a/src/main/java/net/minestom/server/data/SerializableDataImpl.java
+++ b/src/main/java/net/minestom/server/data/SerializableDataImpl.java
@ -183,7 +183,7 @@ public class SerializableDataImpl extends SerializableData {
                    try {
                        return Class.forName(className);
                    } catch (ClassNotFoundException e) {
-                        e.printStackTrace();
+                        MinecraftServer.getExceptionManager().handleException(e);
                        return null;
                    }
                });
--- a/src/main/java/net/minestom/server/exception/ExceptionHandler.java
+++ b/src/main/java/net/minestom/server/exception/ExceptionHandler.java
@ -0,0 +1,17 @@
+package net.minestom.server.exception;
+
+/**
+ * Used when you want to implement your own exception handling, instead of just printing the stack trace.
+ * <p>
+ * Sets with {@link ExceptionManager#setExceptionHandler(ExceptionHandler)}.
+ */
+@FunctionalInterface
+public interface ExceptionHandler {
+
+    /**
+     * Called when a exception was caught.
+     *
+     * @param e the thrown exception
+     */
+    void handleException(Throwable e);
+}
--- a/src/main/java/net/minestom/server/exception/ExceptionManager.java
+++ b/src/main/java/net/minestom/server/exception/ExceptionManager.java
@ -0,0 +1,38 @@
+package net.minestom.server.exception;
+
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Manages the handling of exceptions.
+ */
+public final class ExceptionManager {
+
+    private ExceptionHandler exceptionHandler;
+
+    /**
+     * Handles an exception, if no {@link ExceptionHandler} is set, it just prints the stack trace.
+     *
+     * @param e the occurred exception
+     */
+    public void handleException(Throwable e) {
+        this.getExceptionHandler().handleException(e);
+    }
+
+    /**
+     * Changes the exception handler, to allow custom exception handling.
+     *
+     * @param exceptionHandler the new {@link ExceptionHandler}, can be set to null to apply the default provider
+     */
+    public void setExceptionHandler(@Nullable ExceptionHandler exceptionHandler) {
+        this.exceptionHandler = exceptionHandler;
+    }
+
+    /**
+     * Retrieves the current {@link ExceptionHandler}, can be the default one if none is defined.
+     *
+     * @return the current {@link ExceptionHandler}
+     */
+    public ExceptionHandler getExceptionHandler() {
+        return this.exceptionHandler == null ? exceptionHandler = Throwable::printStackTrace : this.exceptionHandler;
+    }
+}
--- a/src/main/java/net/minestom/server/extensions/ExtensionManager.java
+++ b/src/main/java/net/minestom/server/extensions/ExtensionManager.java
@ -3,6 +3,7 @@ package net.minestom.server.extensions;
 import com.google.gson.Gson;
 import net.minestom.dependencies.DependencyGetter;
 import net.minestom.dependencies.maven.MavenRepository;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.extras.selfmodification.MinestomExtensionClassLoader;
 import net.minestom.server.extras.selfmodification.MinestomRootClassLoader;
 import net.minestom.server.ping.ResponseDataConsumer;
@ -98,7 +99,7 @@ public class ExtensionManager {
                setupClassLoader(discoveredExtension);
            } catch (Exception e) {
                discoveredExtension.loadStatus = DiscoveredExtension.LoadStatus.FAILED_TO_SETUP_CLASSLOADER;
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
                LOGGER.error("Failed to load extension {}", discoveredExtension.getName());
                LOGGER.error("Failed to load extension", e);
            }
@ -113,9 +114,8 @@ public class ExtensionManager {
                attemptSingleLoad(discoveredExtension);
            } catch (Exception e) {
                discoveredExtension.loadStatus = DiscoveredExtension.LoadStatus.LOAD_FAILED;
-                e.printStackTrace();
                LOGGER.error("Failed to load extension {}", discoveredExtension.getName());
-                LOGGER.error("Failed to load extension", e);
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        }
    }
@ -210,7 +210,7 @@ public class ExtensionManager {
            loggerField.set(extension, LoggerFactory.getLogger(extensionClass));
        } catch (IllegalAccessException e) {
            // We made it accessible, should not occur
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        } catch (NoSuchFieldException e) {
            // This should also not occur (unless someone changed the logger in Extension superclass).
            LOGGER.error("Main class '{}' in '{}' has no logger field.", mainClass, extensionName, e);
@ -265,7 +265,7 @@ public class ExtensionManager {
                    extensions.add(extension);
                }
            } catch (IOException e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        }
        return extensions;
@ -284,7 +284,7 @@ public class ExtensionManager {

            return extension;
        } catch (IOException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -497,7 +497,7 @@ public class ExtensionManager {
                    LOGGER.info("Found mixin in extension {}: {}", extension.getName(), mixinConfigFile);
                }
            } catch (Exception e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
                LOGGER.error("Failed to load code modifier for extension in files: " +
                        extension.files
                                .stream()
@ -531,7 +531,7 @@ public class ExtensionManager {
            // close resources
            classloader.close();
        } catch (IOException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
        MinestomRootClassLoader.getInstance().removeChildInHierarchy(classloader);
    }
--- a/src/main/java/net/minestom/server/extras/mojangAuth/MojangCrypt.java
+++ b/src/main/java/net/minestom/server/extras/mojangAuth/MojangCrypt.java
@ -1,5 +1,6 @@
 package net.minestom.server.extras.mojangAuth;

+import net.minestom.server.MinecraftServer;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.jetbrains.annotations.Nullable;
@ -20,7 +21,7 @@ public final class MojangCrypt {
            keyGen.initialize(1024);
            return keyGen.generateKeyPair();
        } catch (NoSuchAlgorithmException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            LOGGER.error("Key pair generation failed!");
            return null;
        }
@ -31,7 +32,7 @@ public final class MojangCrypt {
        try {
            return digestData("SHA-1", data.getBytes("ISO_8859_1"), secretKey.getEncoded(), publicKey.getEncoded());
        } catch (UnsupportedEncodingException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -47,7 +48,7 @@ public final class MojangCrypt {

            return digest.digest();
        } catch (NoSuchAlgorithmException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -64,7 +65,7 @@ public final class MojangCrypt {
        try {
            return setupCipher(mode, key.getAlgorithm(), key).doFinal(data);
        } catch (IllegalBlockSizeException | BadPaddingException var4) {
-            var4.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(var4);
        }

        LOGGER.error("Cipher data failed!");
@ -77,7 +78,7 @@ public final class MojangCrypt {
            cipher4.init(mode, key);
            return cipher4;
        } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException var4) {
-            var4.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(var4);
        }

        LOGGER.error("Cipher creation failed!");
--- a/src/main/java/net/minestom/server/extras/selfmodification/MinestomRootClassLoader.java
+++ b/src/main/java/net/minestom/server/extras/selfmodification/MinestomRootClassLoader.java
@ -1,5 +1,6 @@
 package net.minestom.server.extras.selfmodification;

+import net.minestom.server.MinecraftServer;
 import org.jetbrains.annotations.NotNull;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassWriter;
@ -260,7 +261,7 @@ public class MinestomRootClassLoader extends HierarchyClassLoader {
                }
            }
        } catch (MalformedURLException | ClassNotFoundException | InvocationTargetException | InstantiationException | IllegalAccessException | NoSuchMethodException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

--- a/src/main/java/net/minestom/server/gamedata/loottables/LootTableManager.java
+++ b/src/main/java/net/minestom/server/gamedata/loottables/LootTableManager.java
@ -3,6 +3,7 @@ package net.minestom.server.gamedata.loottables;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonDeserializer;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.gamedata.Condition;
 import net.minestom.server.registry.ResourceGatherer;
 import net.minestom.server.utils.NamespaceID;
@ -84,7 +85,7 @@ public final class LootTableManager {
        try (reader) {
            return cache.computeIfAbsent(name, _name -> create(reader));
        } catch (IOException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
--- a/src/main/java/net/minestom/server/gamedata/loottables/entries/TagType.java
+++ b/src/main/java/net/minestom/server/gamedata/loottables/entries/TagType.java
@ -20,7 +20,7 @@ public class TagType implements LootTableEntryType {
        try {
            return new TagEntry(this, MinecraftServer.getTagManager().load(NamespaceID.from(name), "items"), expand, weight, quality, conditions);
        } catch (FileNotFoundException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
--- a/src/main/java/net/minestom/server/gamedata/tags/TagManager.java
+++ b/src/main/java/net/minestom/server/gamedata/tags/TagManager.java
@ -2,6 +2,7 @@ package net.minestom.server.gamedata.tags;

 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.network.packet.server.play.TagsPacket;
 import net.minestom.server.registry.ResourceGatherer;
 import net.minestom.server.utils.NamespaceID;
@ -288,7 +289,7 @@ public class TagManager {
        try {
            return load(name, type);
        } catch (FileNotFoundException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return Tag.EMPTY;
        }
    }
--- a/src/main/java/net/minestom/server/instance/IChunkLoader.java
+++ b/src/main/java/net/minestom/server/instance/IChunkLoader.java
@ -59,7 +59,7 @@ public interface IChunkLoader {
                parallelSavingThreadPool.awaitTermination(1L, java.util.concurrent.TimeUnit.DAYS);
                OptionalCallback.execute(callback);
            } catch (InterruptedException e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        } else {
            AtomicInteger counter = new AtomicInteger();
--- a/src/main/java/net/minestom/server/instance/palette/PaletteStorage.java
+++ b/src/main/java/net/minestom/server/instance/palette/PaletteStorage.java
@ -2,6 +2,7 @@ package net.minestom.server.instance.palette;

 import it.unimi.dsi.fastutil.shorts.Short2ShortLinkedOpenHashMap;
 import it.unimi.dsi.fastutil.shorts.Short2ShortOpenHashMap;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.instance.Chunk;
 import net.minestom.server.utils.MathUtils;
 import net.minestom.server.utils.chunk.ChunkUtils;
@ -171,7 +172,7 @@ public class PaletteStorage implements PublicCloneable<PaletteStorage> {
            paletteStorage.blockPaletteMaps = blockPaletteMaps.clone();
            return paletteStorage;
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            throw new IllegalStateException("Weird thing happened");
        }
    }
--- a/src/main/java/net/minestom/server/item/ItemStack.java
+++ b/src/main/java/net/minestom/server/item/ItemStack.java
@ -2,6 +2,7 @@ package net.minestom.server.item;

 import it.unimi.dsi.fastutil.objects.Object2ShortMap;
 import it.unimi.dsi.fastutil.objects.Object2ShortOpenHashMap;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.chat.JsonMessage;
 import net.minestom.server.data.Data;
 import net.minestom.server.data.DataContainer;
@ -596,7 +597,7 @@ public class ItemStack implements DataContainer, PublicCloneable<ItemStack> {

            return itemStack;
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -787,4 +788,4 @@ public class ItemStack implements DataContainer, PublicCloneable<ItemStack> {
    public void onInventoryClick(@NotNull Player player, @NotNull ClickType clickType, int slot, boolean playerInventory) {

    }
-}
+}
--- a/src/main/java/net/minestom/server/item/metadata/ItemMeta.java
+++ b/src/main/java/net/minestom/server/item/metadata/ItemMeta.java
@ -1,5 +1,6 @@
 package net.minestom.server.item.metadata;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.item.ItemStack;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;
@ -53,7 +54,7 @@ public abstract class ItemMeta implements PublicCloneable<ItemMeta> {
        try {
            return (ItemMeta) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            throw new IllegalStateException("Weird thing happened");
        }
    }
--- a/src/main/java/net/minestom/server/item/metadata/MapMeta.java
+++ b/src/main/java/net/minestom/server/item/metadata/MapMeta.java
@ -1,5 +1,6 @@
 package net.minestom.server.item.metadata;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.chat.ChatColor;
 import net.minestom.server.utils.clone.CloneUtils;
 import net.minestom.server.utils.clone.PublicCloneable;
@ -271,7 +272,7 @@ public class MapMeta extends ItemMeta {
            try {
                return (MapDecoration) super.clone();
            } catch (CloneNotSupportedException e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
                throw new IllegalStateException("Something weird happened");
            }
        }
--- a/src/main/java/net/minestom/server/map/MapColors.java
+++ b/src/main/java/net/minestom/server/map/MapColors.java
@ -1,5 +1,6 @@
 package net.minestom.server.map;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.thread.MinestomThread;

 import java.util.concurrent.ConcurrentHashMap;
@ -104,7 +105,7 @@ public enum MapColors {
                reduction = Integer.parseInt(reductionStr);
            } catch (NumberFormatException e) {
                System.err.println("Invalid integer in reduction argument: " + reductionStr);
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }

            if (reduction < 0 || reduction >= 255) {
@ -195,7 +196,7 @@ public enum MapColors {
            threads.shutdown();
            threads.awaitTermination(100, TimeUnit.MINUTES);
        } catch (Throwable t) {
-            t.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(t);
        }
    }

--- a/src/main/java/net/minestom/server/network/PacketProcessor.java
+++ b/src/main/java/net/minestom/server/network/PacketProcessor.java
@ -176,7 +176,7 @@ public final class PacketProcessor {
            LOGGER.warn("Connection {} ({}) sent an unexpected packet.",
                    connection.getRemoteAddress(),
                    username);
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }
 }
--- a/src/main/java/net/minestom/server/network/netty/NettyServer.java
+++ b/src/main/java/net/minestom/server/network/netty/NettyServer.java
@ -219,7 +219,7 @@ public final class NettyServer {

            this.serverChannel = (ServerSocketChannel) cf.channel();
        } catch (InterruptedException ex) {
-            ex.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(ex);
        }
    }

@ -263,7 +263,7 @@ public final class NettyServer {
            this.worker.shutdownGracefully();
            this.boss.shutdownGracefully();
        } catch (InterruptedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }

        this.trafficScheduler.shutdown();
--- a/src/main/java/net/minestom/server/network/netty/channel/ClientChannel.java
+++ b/src/main/java/net/minestom/server/network/netty/channel/ClientChannel.java
@ -34,7 +34,7 @@ public class ClientChannel extends SimpleChannelInboundHandler<InboundPacket> {
        try {
            packetProcessor.process(ctx, packet);
        } catch (Exception e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        } finally {
            // Check remaining
            final ByteBuf body = packet.getBody();
@ -74,7 +74,7 @@ public class ClientChannel extends SimpleChannelInboundHandler<InboundPacket> {
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        if (MinecraftServer.shouldProcessNettyErrors()) {
            LOGGER.info(cause.getMessage());
-            cause.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(cause);
        }
        ctx.close();
    }
--- a/src/main/java/net/minestom/server/network/packet/client/login/EncryptionResponsePacket.java
+++ b/src/main/java/net/minestom/server/network/packet/client/login/EncryptionResponsePacket.java
@ -57,7 +57,7 @@ public class EncryptionResponsePacket implements ClientPreplayPacket {
                    CONNECTION_MANAGER.startPlayState(connection, gameProfile.getId(), gameProfile.getName(), true);
                }
            } catch (AuthenticationUnavailableException e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        });
    }
--- a/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
+++ b/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
@ -150,7 +150,7 @@ public class NettyPlayerConnection extends PlayerConnection {
        if (MinecraftServer.shouldProcessNettyErrors()) {
            return channelFuture.addListener(future -> {
                if (!future.isSuccess()) {
-                    future.cause().printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(future.cause());
                }
            });
        } else {
@ -165,7 +165,7 @@ public class NettyPlayerConnection extends PlayerConnection {
        if (MinecraftServer.shouldProcessNettyErrors()) {
            return channelFuture.addListener(future -> {
                if (!future.isSuccess()) {
-                    future.cause().printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(future.cause());
                }
            });
        } else {
--- a/src/main/java/net/minestom/server/potion/CustomPotionEffect.java
+++ b/src/main/java/net/minestom/server/potion/CustomPotionEffect.java
@ -1,5 +1,6 @@
 package net.minestom.server.potion;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;

@ -72,7 +73,7 @@ public class CustomPotionEffect implements PublicCloneable<CustomPotionEffect> {
        try {
            return (CustomPotionEffect) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            throw new IllegalStateException("Weird thing happened");
        }
    }
--- a/src/main/java/net/minestom/server/storage/systems/FileStorageSystem.java
+++ b/src/main/java/net/minestom/server/storage/systems/FileStorageSystem.java
@ -1,5 +1,6 @@
 package net.minestom.server.storage.systems;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.storage.StorageOptions;
 import net.minestom.server.storage.StorageSystem;
 import org.jetbrains.annotations.NotNull;
@ -41,7 +42,7 @@ public class FileStorageSystem implements StorageSystem {
        try {
            this.rocksDB = RocksDB.open(options, location);
        } catch (RocksDBException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

@ -50,7 +51,7 @@ public class FileStorageSystem implements StorageSystem {
        try {
            return rocksDB.get(getKey(key));
        } catch (RocksDBException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -60,7 +61,7 @@ public class FileStorageSystem implements StorageSystem {
        try {
            this.rocksDB.put(getKey(key), data);
        } catch (RocksDBException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

@ -69,7 +70,7 @@ public class FileStorageSystem implements StorageSystem {
        try {
            this.rocksDB.delete(getKey(key));
        } catch (RocksDBException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

@ -78,7 +79,7 @@ public class FileStorageSystem implements StorageSystem {
        try {
            this.rocksDB.closeE();
        } catch (RocksDBException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

--- a/src/main/java/net/minestom/server/thread/PerGroupChunkProvider.java
+++ b/src/main/java/net/minestom/server/thread/PerGroupChunkProvider.java
@ -4,6 +4,7 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.longs.LongArraySet;
 import it.unimi.dsi.fastutil.longs.LongSet;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.instance.Instance;
 import net.minestom.server.utils.chunk.ChunkUtils;
 import org.jetbrains.annotations.NotNull;
@ -150,7 +151,7 @@ public class PerGroupChunkProvider extends ThreadProvider {
                try {
                    countDownLatch.await();
                } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    MinecraftServer.getExceptionManager().handleException(e);
                }

                // Tick all this chunk group
--- a/src/main/java/net/minestom/server/timer/SchedulerManager.java
+++ b/src/main/java/net/minestom/server/timer/SchedulerManager.java
@ -106,7 +106,7 @@ public final class SchedulerManager {
        try {
            batchesPool.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
        } catch (InterruptedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

--- a/src/main/java/net/minestom/server/timer/Task.java
+++ b/src/main/java/net/minestom/server/timer/Task.java
@ -1,6 +1,7 @@
 package net.minestom.server.timer;

 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import net.minestom.server.MinecraftServer;
 import org.jetbrains.annotations.NotNull;

 import java.util.Objects;
@ -65,7 +66,7 @@ public class Task implements Runnable {
                        this.id,
                        e.getMessage()
                );
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            } finally {
                if (this.repeat == 0) this.finish();
                this.currentThreadTask = null;
--- a/src/main/java/net/minestom/server/utils/BlockPosition.java
+++ b/src/main/java/net/minestom/server/utils/BlockPosition.java
@ -1,5 +1,6 @@
 package net.minestom.server.utils;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.instance.block.BlockFace;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;
@ -229,7 +230,7 @@ public class BlockPosition implements PublicCloneable<BlockPosition> {
        try {
            return (BlockPosition) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
--- a/src/main/java/net/minestom/server/utils/NBTUtils.java
+++ b/src/main/java/net/minestom/server/utils/NBTUtils.java
@ -118,7 +118,7 @@ public final class NBTUtils {
                loadDataIntoItem(item, nbt);
            }
        } catch (IOException | NBTException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }

        return item;
--- a/src/main/java/net/minestom/server/utils/PacketUtils.java
+++ b/src/main/java/net/minestom/server/utils/PacketUtils.java
@ -165,7 +165,7 @@ public final class PacketUtils {
        try {
            packet.write(writer);
        } catch (Exception e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }

        return writer.getBuffer();
--- a/src/main/java/net/minestom/server/utils/Position.java
+++ b/src/main/java/net/minestom/server/utils/Position.java
@ -1,5 +1,6 @@
 package net.minestom.server.utils;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.chunk.ChunkUtils;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;
@ -203,7 +204,7 @@ public class Position implements PublicCloneable<Position> {
        try {
            return (Position) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
--- a/src/main/java/net/minestom/server/utils/Vector.java
+++ b/src/main/java/net/minestom/server/utils/Vector.java
@ -1,5 +1,6 @@
 package net.minestom.server.utils;

+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.clone.PublicCloneable;
 import org.jetbrains.annotations.NotNull;

@ -272,7 +273,7 @@ public class Vector implements PublicCloneable<Vector> {
        try {
            return (Vector) super.clone();
        } catch (CloneNotSupportedException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            throw new IllegalStateException("Weird thing happened");
        }
    }
--- a/src/main/java/net/minestom/server/utils/async/AsyncUtils.java
+++ b/src/main/java/net/minestom/server/utils/async/AsyncUtils.java
@ -1,5 +1,6 @@
 package net.minestom.server.utils.async;

+import net.minestom.server.MinecraftServer;
 import org.jetbrains.annotations.NotNull;

 import java.util.concurrent.CompletableFuture;
@ -11,7 +12,7 @@ public final class AsyncUtils {
            try {
                runnable.run();
            } catch (Exception e) {
-                e.printStackTrace();
+                MinecraftServer.getExceptionManager().handleException(e);
            }
        });
    }
--- a/src/main/java/net/minestom/server/utils/binary/BinaryWriter.java
+++ b/src/main/java/net/minestom/server/utils/binary/BinaryWriter.java
@ -2,6 +2,7 @@ package net.minestom.server.utils.binary;

 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.item.ItemStack;
 import net.minestom.server.utils.BlockPosition;
 import net.minestom.server.utils.NBTUtils;
@ -248,7 +249,7 @@ public class BinaryWriter extends OutputStream {
            nbtWriter.writeNamed(name, tag);
        } catch (IOException e) {
            // should not throw, as nbtWriter points to this PacketWriter
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
        }
    }

--- a/src/main/java/net/minestom/server/utils/mojang/MojangUtils.java
+++ b/src/main/java/net/minestom/server/utils/mojang/MojangUtils.java
@ -2,6 +2,7 @@ package net.minestom.server.utils.mojang;

 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
+import net.minestom.server.MinecraftServer;
 import net.minestom.server.utils.url.URLUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@ -20,7 +21,7 @@ public final class MojangUtils {
            final String response = URLUtils.getText(url);
            return JsonParser.parseString(response).getAsJsonObject();
        } catch (IOException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }
@ -33,7 +34,7 @@ public final class MojangUtils {
            final String response = URLUtils.getText(url);
            return JsonParser.parseString(response).getAsJsonObject();
        } catch (IOException e) {
-            e.printStackTrace();
+            MinecraftServer.getExceptionManager().handleException(e);
            return null;
        }
    }