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 61671ef718bd921ad0051f717a871d3db2ac5eab..a128040002fd9f297b9ea501af357c598cbe7af2 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 078e9bd8d93e6f6d6b68841566a6ee5f27deb402..93f6b1e469d5fe240ebdba98f969cf9b3b987da9 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java @@ -2228,7 +2228,7 @@ 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 }