From ffc314382bb537a85a3e0f1deb92137679ae98a4 Mon Sep 17 00:00:00 2001 From: Aikar 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/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java index 5a620f3fd..35774f8bf 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java @@ -2275,24 +2275,51 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable { // CraftBukkit end } - public void a(PacketPlayInTabComplete packetplayintabcomplete) { - PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.x()); + // Paper start - async tab completion + public void a(PacketPlayInTabComplete packet) { // CraftBukkit start if (chatSpamField.addAndGet(this, 10) > 500 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) { - this.disconnect(new ChatMessage("disconnect.spam", new Object[0])); + minecraftServer.postToMainThread(() -> this.disconnect(new ChatMessage("disconnect.spam", new Object[0]))); return; } // CraftBukkit end - ArrayList arraylist = Lists.newArrayList(); - Iterator iterator = this.minecraftServer.tabCompleteCommand(this.player, packetplayintabcomplete.a(), packetplayintabcomplete.b(), packetplayintabcomplete.c()).iterator(); - while (iterator.hasNext()) { - String s = (String) iterator.next(); + com.destroystokyo.paper.event.server.AsyncTabCompleteEvent event; + java.util.List completions = new ArrayList<>(); + BlockPosition blockpos = packet.b(); + String buffer = packet.a(); + boolean isCommand = packet.c(); + event = new com.destroystokyo.paper.event.server.AsyncTabCompleteEvent(this.getPlayer(), completions, + buffer, isCommand, blockpos != null ? MCUtil.toLocation(player.world, blockpos) : 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() && org.bukkit.event.server.TabCompleteEvent.getHandlerList().getRegisteredListeners().length > 0) { + java.util.List finalCompletions = completions; + Waitable> syncCompletions = new Waitable>() { + @Override + protected java.util.List evaluate() { + org.bukkit.event.server.TabCompleteEvent syncEvent = new org.bukkit.event.server.TabCompleteEvent(PlayerConnection.this.getPlayer(), buffer, finalCompletions, isCommand, blockpos != null ? MCUtil.toLocation(player.world, blockpos) : null); + 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(); + } + } - arraylist.add(s); + this.player.playerConnection.sendPacket(new PacketPlayOutTabComplete(completions.toArray(new String[completions.size()]))); + return; } - - this.player.playerConnection.sendPacket(new PacketPlayOutTabComplete((String[]) arraylist.toArray(new String[arraylist.size()]))); + minecraftServer.postToMainThread(() -> { + java.util.List syncCompletions = this.minecraftServer.tabCompleteCommand(this.player, buffer, blockpos, isCommand); + this.player.playerConnection.sendPacket(new PacketPlayOutTabComplete(syncCompletions.toArray(new String[syncCompletions.size()]))); + }); + // Paper end } public void a(PacketPlayInSettings packetplayinsettings) { diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java index aa098172f..09eb79439 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java @@ -1640,8 +1640,8 @@ public final class CraftServer implements Server { } else { offers = tabCompleteChat(player, message); } - - TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers); + + TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers, message.startsWith("/") || forceCommand, pos != null ? MCUtil.toLocation(((CraftWorld) player.getWorld()).getHandle(), 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 1e3aae3b8..95d13c146 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 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 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 finalCompletions = completions; + Waitable> syncCompletions = new Waitable>() { + @Override + protected List 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> waitable = new Waitable>() { @Override -- 2.15.0