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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 26 Nov 2017 13:19:58 -0500
Subject: [PATCH] AsyncTabCompleteEvent
Let plugins be able to control tab completion of commands and chat async.
This will be useful for frameworks like ACF so we can define async safe completion handlers,
and avoid going to main for tab completions.
Especially useful if you need to query a database in order to obtain the results for tab
completion, such as offline players.
Also adds isCommand and getLocation to the sync TabCompleteEvent
diff --git a/src/main/java/net/minecraft/server/network/PlayerConnection.java b/src/main/java/net/minecraft/server/network/PlayerConnection.java
index 3628965d2a18a367c2357b54b65786fb90c38205..fc624315b156f450c1cbc87a81e9eeff5d31b4c2 100644
--- a/src/main/java/net/minecraft/server/network/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/network/PlayerConnection.java
@@ -713,10 +713,10 @@ public class PlayerConnection implements PacketListenerPlayIn {
@Override
public void a(PacketPlayInTabComplete packetplayintabcomplete) {
- PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.getWorldServer());
+ // PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.getWorldServer()); // Paper - run this async
// CraftBukkit start
if (chatSpamField.addAndGet(this, 1) > 500 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) {
- this.disconnect(new ChatMessage("disconnect.spam", new Object[0]));
+ minecraftServer.scheduleOnMain(() -> this.disconnect(new ChatMessage("disconnect.spam", new Object[0]))); // Paper
return;
}
// CraftBukkit end
@@ -726,12 +726,35 @@ public class PlayerConnection implements PacketListenerPlayIn {
stringreader.skip();
}
- ParseResults<CommandListenerWrapper> parseresults = this.minecraftServer.getCommandDispatcher().a().parse(stringreader, this.player.getCommandListener());
+ // Paper start - async tab completion
+ com.destroystokyo.paper.event.server.AsyncTabCompleteEvent event;
+ java.util.List<String> completions = new java.util.ArrayList<>();
+ String buffer = packetplayintabcomplete.c();
+ event = new com.destroystokyo.paper.event.server.AsyncTabCompleteEvent(this.getPlayer(), completions,
+ buffer, true, null);
+ event.callEvent();
+ completions = event.isCancelled() ? com.google.common.collect.ImmutableList.of() : event.getCompletions();
+ // If the event isn't handled, we can assume that we have no completions, and so we'll ask the server
+ if (!event.isHandled()) {
+ if (!event.isCancelled()) {
- this.minecraftServer.getCommandDispatcher().a().getCompletionSuggestions(parseresults).thenAccept((suggestions) -> {
- if (suggestions.isEmpty()) return; // CraftBukkit - don't send through empty suggestions - prevents [<args>] from showing for plugins with nothing more to offer
- this.networkManager.sendPacket(new PacketPlayOutTabComplete(packetplayintabcomplete.b(), suggestions));
- });
+ this.minecraftServer.scheduleOnMain(() -> { // Paper - This needs to be on main
+ ParseResults<CommandListenerWrapper> parseresults = this.minecraftServer.getCommandDispatcher().a().parse(stringreader, this.player.getCommandListener());
+
+ this.minecraftServer.getCommandDispatcher().a().getCompletionSuggestions(parseresults).thenAccept((suggestions) -> {
+ if (suggestions.isEmpty()) return; // CraftBukkit - don't send through empty suggestions - prevents [<args>] from showing for plugins with nothing more to offer
+ this.networkManager.sendPacket(new PacketPlayOutTabComplete(packetplayintabcomplete.b(), suggestions));
+ });
+ });
+ }
+ } else if (!completions.isEmpty()) {
+ com.mojang.brigadier.suggestion.SuggestionsBuilder builder = new com.mojang.brigadier.suggestion.SuggestionsBuilder(packetplayintabcomplete.c(), stringreader.getTotalLength());
+
+ builder = builder.createOffset(builder.getInput().lastIndexOf(' ') + 1);
+ completions.forEach(builder::suggest);
+ player.playerConnection.sendPacket(new PacketPlayOutTabComplete(packetplayintabcomplete.b(), builder.buildFuture().join()));
+ }
+ // Paper end - async tab completion
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 2f9d649bd7b59b36d23316707da7e31430f8a6cb..fb6a1526384b94495939299b4eef2d1ea2ad7378 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1849,7 +1849,7 @@ public final class CraftServer implements Server {
offers = tabCompleteChat(player, message);
}
- TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers);
+ TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers, message.startsWith("/") || forceCommand, pos != null ? net.minecraft.server.MCUtil.toLocation(((CraftWorld) player.getWorld()).getHandle(), new BlockPosition(pos)) : null); // Paper
getPluginManager().callEvent(tabEvent);
return tabEvent.isCancelled() ? Collections.EMPTY_LIST : tabEvent.getCompletions();
diff --git a/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java b/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
index a957695457cf3252848ce6ef37069692841b8e28..c5e00bd9e2790992202aadf8eec2002fc88c78f1 100644
--- a/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
+++ b/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java
@@ -28,6 +28,39 @@ public class ConsoleCommandCompleter implements Completer {
public void complete(LineReader reader, ParsedLine line, List<Candidate> candidates) {
final CraftServer server = this.server.server;
final String buffer = line.line();
+ // Async Tab Complete
+ com.destroystokyo.paper.event.server.AsyncTabCompleteEvent event;
+ java.util.List<String> completions = new java.util.ArrayList<>();
+ event = new com.destroystokyo.paper.event.server.AsyncTabCompleteEvent(server.getConsoleSender(), completions,
+ buffer, true, null);
+ event.callEvent();
+ completions = event.isCancelled() ? com.google.common.collect.ImmutableList.of() : event.getCompletions();
+
+ if (event.isCancelled() || event.isHandled()) {
+ // Still fire sync event with the provided completions, if someone is listening
+ if (!event.isCancelled() && TabCompleteEvent.getHandlerList().getRegisteredListeners().length > 0) {
+ List<String> finalCompletions = completions;
+ Waitable<List<String>> syncCompletions = new Waitable<List<String>>() {
+ @Override
+ protected List<String> evaluate() {
+ org.bukkit.event.server.TabCompleteEvent syncEvent = new org.bukkit.event.server.TabCompleteEvent(server.getConsoleSender(), buffer, finalCompletions);
+ return syncEvent.callEvent() ? syncEvent.getCompletions() : com.google.common.collect.ImmutableList.of();
+ }
+ };
+ server.getServer().processQueue.add(syncCompletions);
+ try {
+ completions = syncCompletions.get();
+ } catch (InterruptedException | ExecutionException e1) {
+ e1.printStackTrace();
+ }
+ }
+
+ if (!completions.isEmpty()) {
+ candidates.addAll(completions.stream().map(Candidate::new).collect(java.util.stream.Collectors.toList()));
+ }
+ return;
+ }
+
// Paper end
Waitable<List<String>> waitable = new Waitable<List<String>>() {
@Override
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