From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Jason Penilla <11360596+jpenilla@users.noreply.github.com> 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 Co-authored-by: Aikar diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java index 6e2957e31ad4be418bcd475b2e3a4e56b5be591e..b5abb0d433322224ccbbed8755fb3ebf77b5a36c 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -688,12 +688,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl } + // Paper start + private static final java.util.concurrent.ExecutorService TAB_COMPLETE_EXECUTOR = java.util.concurrent.Executors.newFixedThreadPool(4, + new com.google.common.util.concurrent.ThreadFactoryBuilder().setDaemon(true).setNameFormat("Async Tab Complete Thread - #%d").setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(net.minecraft.server.MinecraftServer.LOGGER)).build()); + // Paper end @Override public void handleCustomCommandSuggestions(ServerboundCommandSuggestionPacket packet) { - PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); + // PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // Paper - run this async // CraftBukkit start if (this.chatSpamTickCount.addAndGet(1) > 500 && !this.server.getPlayerList().isOp(this.player.getGameProfile())) { - this.disconnect(Component.translatable("disconnect.spam")); + server.scheduleOnMain(() -> this.disconnect(Component.translatable("disconnect.spam", new Object[0]))); // Paper return; } // Paper start @@ -704,18 +708,45 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl } // Paper end // CraftBukkit end + // Paper start - async tab completion + TAB_COMPLETE_EXECUTOR.execute(() -> { StringReader stringreader = new StringReader(packet.getCommand()); if (stringreader.canRead() && stringreader.peek() == '/') { stringreader.skip(); } - - ParseResults parseresults = this.server.getCommands().getDispatcher().parse(stringreader, this.player.createCommandSourceStack()); - - this.server.getCommands().getDispatcher().getCompletionSuggestions(parseresults).thenAccept((suggestions) -> { - if (suggestions.isEmpty()) return; // CraftBukkit - don't send through empty suggestions - prevents [] from showing for plugins with nothing more to offer - this.send(new ClientboundCommandSuggestionsPacket(packet.getId(), suggestions)); + final String command = packet.getCommand(); + final com.destroystokyo.paper.event.server.AsyncTabCompleteEvent event = new com.destroystokyo.paper.event.server.AsyncTabCompleteEvent(this.getCraftPlayer(), command, true, null); + event.callEvent(); + final java.util.List completions = event.isCancelled() ? com.google.common.collect.ImmutableList.of() : event.completions(); + // 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.server.scheduleOnMain(() -> { // This needs to be on main + ParseResults parseresults = this.server.getCommands().getDispatcher().parse(stringreader, this.player.createCommandSourceStack()); + + this.server.getCommands().getDispatcher().getCompletionSuggestions(parseresults).thenAccept((suggestions) -> { + if (suggestions.isEmpty()) return; // CraftBukkit - don't send through empty suggestions - prevents [] from showing for plugins with nothing more to offer + this.connection.send(new ClientboundCommandSuggestionsPacket(packet.getId(), suggestions)); + }); + }); + } + } else if (!completions.isEmpty()) { + final com.mojang.brigadier.suggestion.SuggestionsBuilder builder0 = new com.mojang.brigadier.suggestion.SuggestionsBuilder(command, stringreader.getTotalLength()); + final com.mojang.brigadier.suggestion.SuggestionsBuilder builder = builder0.createOffset(builder0.getInput().lastIndexOf(' ') + 1); + completions.forEach(completion -> { + final Integer intSuggestion = com.google.common.primitives.Ints.tryParse(completion.suggestion()); + if (intSuggestion != null) { + builder.suggest(intSuggestion, PaperAdventure.asVanilla(completion.tooltip())); + } else { + builder.suggest(completion.suggestion(), PaperAdventure.asVanilla(completion.tooltip())); + } + }); + player.connection.send(new ClientboundCommandSuggestionsPacket(packet.getId(), 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 67f2b02a23515796b8df450f2360d6914b74bb4a..654c174df812271e31c72a88445df57ba8aca675 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java @@ -2195,7 +2195,7 @@ public final class CraftServer implements Server { offers = this.tabCompleteChat(player, message); } - TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers); + TabCompleteEvent tabEvent = new TabCompleteEvent(player, message, offers, message.startsWith("/") || forceCommand, pos != null ? io.papermc.paper.util.MCUtil.toLocation(((CraftWorld) player.getWorld()).getHandle(), BlockPos.containing(pos)) : null); // Paper this.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 d24acf28f5ed023acc550bcf877e4b9800ec8c9f..8f82041f0482df22a6a9ea38d50d56228131775d 100644 --- a/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java +++ b/src/main/java/org/bukkit/craftbukkit/command/ConsoleCommandCompleter.java @@ -28,6 +28,61 @@ 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 + final com.destroystokyo.paper.event.server.AsyncTabCompleteEvent event = + new com.destroystokyo.paper.event.server.AsyncTabCompleteEvent(server.getConsoleSender(), buffer, true, null); + event.callEvent(); + final List completions = event.isCancelled() ? com.google.common.collect.ImmutableList.of() : event.completions(); + + 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 = new java.util.ArrayList<>(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.stream() + .map(com.destroystokyo.paper.event.server.AsyncTabCompleteEvent.Completion::suggestion) + .collect(java.util.stream.Collectors.toList())); + return syncEvent.callEvent() ? syncEvent.getCompletions() : com.google.common.collect.ImmutableList.of(); + } + }; + server.getServer().processQueue.add(syncCompletions); + try { + final List legacyCompletions = syncCompletions.get(); + completions.removeIf(it -> !legacyCompletions.contains(it.suggestion())); // remove any suggestions that were removed + // add any new suggestions + for (final String completion : legacyCompletions) { + if (notNewSuggestion(completions, completion)) { + continue; + } + completions.add(com.destroystokyo.paper.event.server.AsyncTabCompleteEvent.Completion.completion(completion)); + } + } catch (InterruptedException | ExecutionException e1) { + e1.printStackTrace(); + } + } + + if (!completions.isEmpty()) { + for (final com.destroystokyo.paper.event.server.AsyncTabCompleteEvent.Completion completion : completions) { + if (completion.suggestion().isEmpty()) { + continue; + } + candidates.add(new Candidate( + completion.suggestion(), + completion.suggestion(), + null, + io.papermc.paper.adventure.PaperAdventure.PLAIN.serializeOr(completion.tooltip(), null), + null, + null, + false + )); + } + } + return; + } + // Paper end Waitable> waitable = new Waitable>() { @Override @@ -73,4 +128,15 @@ public class ConsoleCommandCompleter implements Completer { Thread.currentThread().interrupt(); } } + + // Paper start + private boolean notNewSuggestion(final List completions, final String completion) { + for (final com.destroystokyo.paper.event.server.AsyncTabCompleteEvent.Completion it : completions) { + if (it.suggestion().equals(completion)) { + return true; + } + } + return false; + } + // Paper end }