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PaperMC/patches/server/0789-Add-paper-dumplisteners-command.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
Date: Tue, 25 Oct 2022 21:15:37 +0200
Subject: [PATCH] Add /paper dumplisteners command
Co-authored-by: TwoLeggedCat <80929284+TwoLeggedCat@users.noreply.github.com>
diff --git a/src/main/java/io/papermc/paper/command/PaperCommand.java b/src/main/java/io/papermc/paper/command/PaperCommand.java
index c9bb2df0d884227576ed8d2e72219bbbd7ba827e..534d9c380f26d6cce3c99fa88ad2e15410535094 100644
--- a/src/main/java/io/papermc/paper/command/PaperCommand.java
+++ b/src/main/java/io/papermc/paper/command/PaperCommand.java
@@ -41,6 +41,7 @@ public final class PaperCommand extends Command {
commands.put(Set.of("syncloadinfo"), new SyncLoadInfoCommand());
commands.put(Set.of("dumpitem"), new DumpItemCommand());
commands.put(Set.of("mobcaps", "playermobcaps"), new MobcapsCommand());
+ commands.put(Set.of("dumplisteners"), new DumpListenersCommand());
return commands.entrySet().stream()
.flatMap(entry -> entry.getKey().stream().map(s -> Map.entry(s, entry.getValue())))
diff --git a/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java b/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java
index efc4ec58ab4b3ceefd66b714d286a6187babc724..fae73bac86fea722be4c9178eda0779ea88d1884 100644
--- a/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java
+++ b/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java
@@ -1,19 +1,26 @@
package io.papermc.paper.command.subcommands;
import io.papermc.paper.adventure.PaperAdventure;
+import io.papermc.paper.command.CommandUtil;
import io.papermc.paper.command.PaperSubcommand;
import java.util.ArrayList;
+import java.util.Collections;
+import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
+import java.util.Set;
+import java.util.function.Consumer;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.ComponentLike;
import net.kyori.adventure.text.JoinConfiguration;
import net.kyori.adventure.text.TextComponent;
import net.minecraft.core.Registry;
import net.minecraft.core.RegistryAccess;
+import net.minecraft.core.component.DataComponentMap;
import net.minecraft.core.component.DataComponentPatch;
import net.minecraft.core.component.DataComponentType;
+import net.minecraft.core.component.TypedDataComponent;
import net.minecraft.core.registries.Registries;
import net.minecraft.nbt.NbtOps;
import net.minecraft.nbt.NbtUtils;
@@ -25,6 +32,7 @@ import org.bukkit.craftbukkit.CraftServer;
import org.bukkit.craftbukkit.inventory.CraftItemStack;
import org.bukkit.entity.Player;
import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.framework.qual.DefaultQualifier;
import static net.kyori.adventure.text.Component.join;
@@ -36,17 +44,19 @@ import static net.kyori.adventure.text.format.NamedTextColor.GRAY;
import static net.kyori.adventure.text.format.NamedTextColor.RED;
import static net.kyori.adventure.text.format.NamedTextColor.WHITE;
import static net.kyori.adventure.text.format.NamedTextColor.YELLOW;
+import static net.kyori.adventure.text.format.TextColor.color;
import static net.kyori.adventure.text.format.TextDecoration.ITALIC;
@DefaultQualifier(NonNull.class)
public final class DumpItemCommand implements PaperSubcommand {
@Override
public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
- this.doDumpItem(sender);
+ this.doDumpItem(sender, args.length > 0 && "all".equals(args[0]));
return true;
}
- private void doDumpItem(final CommandSender sender) {
+ @SuppressWarnings({"unchecked", "OptionalAssignedToNull", "rawtypes"})
+ private void doDumpItem(final CommandSender sender, final boolean includeAllComponents) {
if (!(sender instanceof final Player player)) {
sender.sendMessage("Only players can use this command");
return;
@@ -57,38 +67,65 @@ public final class DumpItemCommand implements PaperSubcommand {
final String itemName = itemStack.getItemHolder().unwrapKey().orElseThrow().location().toString();
itemCommandBuilder.append(itemName);
visualOutput.append(text(itemName, YELLOW)); // item type
+ final Set<DataComponentType<?>> referencedComponentTypes = Collections.newSetFromMap(new IdentityHashMap<>());
final DataComponentPatch patch = itemStack.getComponentsPatch();
+ referencedComponentTypes.addAll(patch.entrySet().stream().map(Map.Entry::getKey).toList());
+ final DataComponentMap prototype = itemStack.getItem().components();
+ if (includeAllComponents) {
+ referencedComponentTypes.addAll(prototype.keySet());
+ }
final RegistryAccess.Frozen access = ((CraftServer) sender.getServer()).getServer().registryAccess();
final RegistryOps<Tag> ops = access.createSerializationContext(NbtOps.INSTANCE);
final Registry<DataComponentType<?>> registry = access.registryOrThrow(Registries.DATA_COMPONENT_TYPE);
- if (!patch.isEmpty()) {
- visualOutput.append(text("[", WHITE));
- itemCommandBuilder.append("[");
- final List<ComponentLike> componentComponents = new ArrayList<>();
- final List<String> commandComponents = new ArrayList<>();
- for (final Map.Entry<DataComponentType<?>, Optional<?>> entry : patch.entrySet()) {
- final String path = registry.getResourceKey(entry.getKey()).orElseThrow().location().getPath();
- if (entry.getValue().isEmpty()) {
+ final List<ComponentLike> componentComponents = new ArrayList<>();
+ final List<String> commandComponents = new ArrayList<>();
+ for (final DataComponentType<?> type : referencedComponentTypes) {
+ final String path = registry.getResourceKey(type).orElseThrow().location().getPath();
+ final @Nullable Optional<?> patchedValue = patch.get(type);
+ final @Nullable TypedDataComponent<?> prototypeValue = prototype.getTyped(type);
+ if (patchedValue != null) {
+ if (patchedValue.isEmpty()) {
componentComponents.add(text().append(text('!', RED), text(path, AQUA)));
commandComponents.add("!" + path);
} else {
- final Tag serialized = (Tag) ((DataComponentType) entry.getKey()).codecOrThrow().encodeStart(ops, entry.getValue().get()).getOrThrow();
- componentComponents.add(textOfChildren(
- text(path, AQUA),
- text("=", WHITE),
- PaperAdventure.asAdventure(NbtUtils.toPrettyComponent(serialized))
- ));
- commandComponents.add(path + "=" + serialized.getAsString());
+ final Tag serialized = (Tag) ((DataComponentType) type).codecOrThrow().encodeStart(ops, patchedValue.get()).getOrThrow();
+ writeComponentValue(componentComponents::add, commandComponents::add, path, serialized);
}
-
+ } else if (includeAllComponents && prototypeValue != null) {
+ final Tag serialized = prototypeValue.encodeValue(ops).getOrThrow();
+ writeComponentValue(componentComponents::add, commandComponents::add, path, serialized);
}
- visualOutput
- .append(join(JoinConfiguration.separator(text(",", WHITE)), componentComponents))
- .append(text("]", WHITE));
- itemCommandBuilder.append(String.join(",", commandComponents)).append("]");
+ }
+ if (!componentComponents.isEmpty()) {
+ visualOutput.append(
+ text("[", color(0x8910CE)),
+ join(JoinConfiguration.separator(text(",", GRAY)), componentComponents),
+ text("]", color(0x8910CE))
+ );
+ itemCommandBuilder
+ .append("[")
+ .append(String.join(",", commandComponents))
+ .append("]");
}
final Component hoverMsg = text("Click to copy item definition to clipboard for use with /pgive", GRAY, ITALIC);
player.sendMessage(visualOutput.build().compact().hoverEvent(hoverMsg).clickEvent(copyToClipboard(itemCommandBuilder.toString())));
}
+
+ private static void writeComponentValue(final Consumer<Component> visualOutput, final Consumer<String> commandOutput, final String path, final Tag serialized) {
+ visualOutput.accept(textOfChildren(
+ text(path, color(0xFF7FD7)),
+ text("=", WHITE),
+ PaperAdventure.asAdventure(NbtUtils.toPrettyComponent(serialized))
+ ));
+ commandOutput.accept(path + "=" + serialized.getAsString());
+ }
+
+ @Override
+ public List<String> tabComplete(final CommandSender sender, final String subCommand, final String[] args) {
+ if (args.length == 1) {
+ return CommandUtil.getListMatchingLast(sender, args, "all");
+ }
+ return Collections.emptyList();
+ }
}
diff --git a/src/main/java/io/papermc/paper/command/subcommands/DumpListenersCommand.java b/src/main/java/io/papermc/paper/command/subcommands/DumpListenersCommand.java
new file mode 100644
index 0000000000000000000000000000000000000000..aa44d4685de3caee4131449bead7a084868ff976
--- /dev/null
+++ b/src/main/java/io/papermc/paper/command/subcommands/DumpListenersCommand.java
@@ -0,0 +1,172 @@
+package io.papermc.paper.command.subcommands;
+
+import com.destroystokyo.paper.util.SneakyThrow;
+import io.papermc.paper.command.PaperSubcommand;
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.reflect.Field;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+import java.util.Set;
+import net.kyori.adventure.text.Component;
+import net.minecraft.server.MinecraftServer;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+import org.bukkit.event.HandlerList;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.RegisteredListener;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+import static net.kyori.adventure.text.Component.newline;
+import static net.kyori.adventure.text.Component.space;
+import static net.kyori.adventure.text.Component.text;
+import static net.kyori.adventure.text.format.NamedTextColor.GRAY;
+import static net.kyori.adventure.text.format.NamedTextColor.GREEN;
+import static net.kyori.adventure.text.format.NamedTextColor.RED;
+import static net.kyori.adventure.text.format.NamedTextColor.WHITE;
+
+@DefaultQualifier(NonNull.class)
+public final class DumpListenersCommand implements PaperSubcommand {
+ private static final MethodHandle EVENT_TYPES_HANDLE;
+
+ static {
+ try {
+ final Field eventTypesField = HandlerList.class.getDeclaredField("EVENT_TYPES");
+ eventTypesField.setAccessible(true);
+ EVENT_TYPES_HANDLE = MethodHandles.lookup().unreflectGetter(eventTypesField);
+ } catch (final ReflectiveOperationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
+ if (args.length >= 1 && args[0].equals("tofile")) {
+ this.dumpToFile(sender);
+ return true;
+ }
+ this.doDumpListeners(sender, args);
+ return true;
+ }
+
+ private void dumpToFile(final CommandSender sender) {
+ final File file = new File("debug/listeners-"
+ + DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss").format(LocalDateTime.now()) + ".txt");
+ file.getParentFile().mkdirs();
+ try (final PrintWriter writer = new PrintWriter(file)) {
+ for (final String eventClass : eventClassNames()) {
+ final HandlerList handlers;
+ try {
+ handlers = (HandlerList) findClass(eventClass).getMethod("getHandlerList").invoke(null);
+ } catch (final ReflectiveOperationException e) {
+ continue;
+ }
+ if (handlers.getRegisteredListeners().length != 0) {
+ writer.println(eventClass);
+ }
+ for (final RegisteredListener registeredListener : handlers.getRegisteredListeners()) {
+ writer.println(" - " + registeredListener);
+ }
+ }
+ } catch (final IOException ex) {
+ throw new RuntimeException(ex);
+ }
+ sender.sendMessage(text("Dumped listeners to " + file, GREEN));
+ }
+
+ private void doDumpListeners(final CommandSender sender, final String[] args) {
+ if (args.length == 0) {
+ sender.sendMessage(text("Usage: /paper dumplisteners tofile|<className>", RED));
+ return;
+ }
+
+ try {
+ final HandlerList handlers = (HandlerList) findClass(args[0]).getMethod("getHandlerList").invoke(null);
+
+ if (handlers.getRegisteredListeners().length == 0) {
+ sender.sendMessage(text(args[0] + " does not have any registered listeners."));
+ return;
+ }
+
+ sender.sendMessage(text("Listeners for " + args[0] + ":"));
+
+ for (final RegisteredListener listener : handlers.getRegisteredListeners()) {
+ final Component hoverText = text("Priority: " + listener.getPriority().name() + " (" + listener.getPriority().getSlot() + ")", WHITE)
+ .append(newline())
+ .append(text("Listener: " + listener.getListener()))
+ .append(newline())
+ .append(text("Executor: " + listener.getExecutor()))
+ .append(newline())
+ .append(text("Ignoring cancelled: " + listener.isIgnoringCancelled()));
+
+ sender.sendMessage(text(listener.getPlugin().getName(), GREEN)
+ .append(space())
+ .append(text("(" + listener.getListener().getClass().getName() + ")", GRAY).hoverEvent(hoverText)));
+ }
+
+ sender.sendMessage(text("Total listeners: " + handlers.getRegisteredListeners().length));
+
+ } catch (final ClassNotFoundException e) {
+ sender.sendMessage(text("Unable to find a class named '" + args[0] + "'. Make sure to use the fully qualified name.", RED));
+ } catch (final NoSuchMethodException e) {
+ sender.sendMessage(text("Class '" + args[0] + "' does not have a valid getHandlerList method.", RED));
+ } catch (final ReflectiveOperationException e) {
+ sender.sendMessage(text("Something went wrong, see the console for more details.", RED));
+ MinecraftServer.LOGGER.warn("Error occurred while dumping listeners for class " + args[0], e);
+ }
+ }
+
+ @Override
+ public List<String> tabComplete(final CommandSender sender, final String subCommand, final String[] args) {
+ return switch (args.length) {
+ case 0 -> suggestions();
+ case 1 -> suggestions().stream()
+ .filter(clazz -> clazz.toLowerCase(Locale.ROOT).contains(args[0].toLowerCase(Locale.ROOT)))
+ .toList();
+ default -> Collections.emptyList();
+ };
+ }
+
+ private static List<String> suggestions() {
+ final List<String> ret = new ArrayList<>();
+ ret.add("tofile");
+ ret.addAll(eventClassNames());
+ return ret;
+ }
+
+ @SuppressWarnings("unchecked")
+ private static Set<String> eventClassNames() {
+ try {
+ return (Set<String>) EVENT_TYPES_HANDLE.invokeExact();
+ } catch (final Throwable e) {
+ SneakyThrow.sneaky(e);
+ return Collections.emptySet(); // Unreachable
+ }
+ }
+
+ private static Class<?> findClass(final String className) throws ClassNotFoundException {
+ try {
+ return Class.forName(className);
+ } catch (final ClassNotFoundException ignore) {
+ for (final Plugin plugin : Bukkit.getServer().getPluginManager().getPlugins()) {
+ if (!plugin.isEnabled()) {
+ continue;
+ }
+
+ try {
+ return Class.forName(className, false, plugin.getClass().getClassLoader());
+ } catch (final ClassNotFoundException ignore0) {
+ }
+ }
+ }
+ throw new ClassNotFoundException(className);
+ }
+}
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