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41647af74c
Paper/patches/server/0322-Chunk-debug-command.patch
Spottedleaf 41647af74c Do not use worldgen executor for api profile completions 
We cannot put blocking network I/O onto the worldgen threads,
this will crash the server if it stalls
2022-07-03 14:55:56 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 1 Jun 2019 13:00:55 -0700
Subject: [PATCH] Chunk debug command
Prints all chunk information to a text file into the debug
folder in the root server folder. The format is in JSON, and
the data format is described in MCUtil#dumpChunks(File)
The command will output server version and all online players to the
file as well. We do not log anything but the location, world and
username of the player.
Also logs the value of these config values (note not all are paper's):
- keep spawn loaded value
- spawn radius
- view distance
Each chunk has the following logged:
- Coordinate
- Ticket level & its corresponding state
- Whether it is queued for unload
- Chunk status (may be unloaded)
- All tickets on the chunk
Example log:
https://gist.githubusercontent.com/Spottedleaf/0131e7710ffd5d531e5fd246c3367380/raw/169ae1b2e240485f99bc7a6bd8e78d90e3af7397/chunks-2019-06-01_19.57.05.txt
For references on certain keywords (ticket, status, etc), please see:
https://bugs.mojang.com/browse/MC-141484?focusedCommentId=528273&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-528273
https://bugs.mojang.com/browse/MC-141484?focusedCommentId=528577&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-528577
diff --git a/src/main/java/com/destroystokyo/paper/PaperCommand.java b/src/main/java/com/destroystokyo/paper/PaperCommand.java
index 13a5062e539f6f43e6fe582318c36302bd6520ee..527b37e2740d6ca0d8d7695f069111d156c74b66 100644
--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
@@ -9,11 +9,13 @@ import com.google.common.collect.Maps;
import net.minecraft.core.Registry;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ChunkHolder;
import net.minecraft.server.level.ServerChunkCache;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.level.ChunkPos;
+import net.minecraft.server.MCUtil;
import org.apache.commons.lang3.tuple.MutablePair;
import org.apache.commons.lang3.tuple.Pair;
import org.bukkit.Bukkit;
@@ -40,13 +42,15 @@ import java.util.Set;
import java.util.stream.Collectors;
import static net.kyori.adventure.text.Component.text;
+import static net.kyori.adventure.text.format.NamedTextColor.BLUE;
+import static net.kyori.adventure.text.format.NamedTextColor.DARK_AQUA;
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.YELLOW;
public class PaperCommand extends Command {
private static final String BASE_PERM = "bukkit.command.paper.";
- private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version").build();
+ private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version", "debug", "chunkinfo").build();
public PaperCommand(String name) {
super(name);
@@ -74,6 +78,21 @@ public class PaperCommand extends Command {
if (args.length == 3)
return getListMatchingLast(sender, args, Registry.ENTITY_TYPE.keySet().stream().map(ResourceLocation::toString).sorted().toArray(String[]::new));
break;
+ case "debug":
+ if (args.length == 2) {
+ return getListMatchingLast(sender, args, "help", "chunks");
+ }
+ break;
+ case "chunkinfo":
+ List<String> worldNames = new ArrayList<>();
+ worldNames.add("*");
+ for (org.bukkit.World world : Bukkit.getWorlds()) {
+ worldNames.add(world.getName());
+ }
+ if (args.length == 2) {
+ return getListMatchingLast(sender, args, worldNames);
+ }
+ break;
}
return Collections.emptyList();
}
@@ -140,6 +159,12 @@ public class PaperCommand extends Command {
case "reload":
doReload(sender);
break;
+ case "debug":
+ doDebug(sender, args);
+ break;
+ case "chunkinfo":
+ doChunkInfo(sender, args);
+ break;
case "ver":
if (!testPermission(sender, "version")) break; // "ver" needs a special check because it's an alias. All other commands are checked up before the switch statement (because they are present in the SUBCOMMANDS set)
case "version":
@@ -157,6 +182,122 @@ public class PaperCommand extends Command {
return true;
}
+ private void doChunkInfo(CommandSender sender, String[] args) {
+ List<org.bukkit.World> worlds;
+ if (args.length < 2 || args[1].equals("*")) {
+ worlds = Bukkit.getWorlds();
+ } else {
+ worlds = new ArrayList<>(args.length - 1);
+ for (int i = 1; i < args.length; ++i) {
+ org.bukkit.World world = Bukkit.getWorld(args[i]);
+ if (world == null) {
+ sender.sendMessage(text("World '" + args[i] + "' is invalid", RED));
+ return;
+ }
+ worlds.add(world);
+ }
+ }
+
+ int accumulatedTotal = 0;
+ int accumulatedInactive = 0;
+ int accumulatedBorder = 0;
+ int accumulatedTicking = 0;
+ int accumulatedEntityTicking = 0;
+
+ for (org.bukkit.World bukkitWorld : worlds) {
+ ServerLevel world = ((CraftWorld)bukkitWorld).getHandle();
+
+ int total = 0;
+ int inactive = 0;
+ int border = 0;
+ int ticking = 0;
+ int entityTicking = 0;
+
+ for (ChunkHolder chunk : world.getChunkSource().chunkMap.updatingChunkMap.values()) {
+ if (chunk.getFullChunkNowUnchecked() == null) {
+ continue;
+ }
+
+ ++total;
+
+ ChunkHolder.FullChunkStatus state = ChunkHolder.getFullChunkStatus(chunk.getTicketLevel());
+
+ switch (state) {
+ case INACCESSIBLE:
+ ++inactive;
+ continue;
+ case BORDER:
+ ++border;
+ continue;
+ case TICKING:
+ ++ticking;
+ continue;
+ case ENTITY_TICKING:
+ ++entityTicking;
+ continue;
+ }
+ }
+
+ accumulatedTotal += total;
+ accumulatedInactive += inactive;
+ accumulatedBorder += border;
+ accumulatedTicking += ticking;
+ accumulatedEntityTicking += entityTicking;
+
+ sender.sendMessage(text().append(text("Chunks in ", BLUE), text(bukkitWorld.getName(), GREEN), text(":")));
+ sender.sendMessage(text().color(DARK_AQUA).append(
+ text("Total: ", BLUE), text(total),
+ text(" Inactive: ", BLUE), text(inactive),
+ text(" Border: ", BLUE), text(border),
+ text(" Ticking: ", BLUE), text(ticking),
+ text(" Entity: ", BLUE), text(entityTicking)
+ ));
+ }
+ if (worlds.size() > 1) {
+ sender.sendMessage(text().append(text("Chunks in ", BLUE), text("all listed worlds", GREEN), text(":", DARK_AQUA)));
+ sender.sendMessage(text().color(DARK_AQUA).append(
+ text("Total: ", BLUE), text(accumulatedTotal),
+ text(" Inactive: ", BLUE), text(accumulatedInactive),
+ text(" Border: ", BLUE), text(accumulatedBorder),
+ text(" Ticking: ", BLUE), text(accumulatedTicking),
+ text(" Entity: ", BLUE), text(accumulatedEntityTicking)
+ ));
+ }
+ }
+
+ private void doDebug(CommandSender sender, String[] args) {
+ if (args.length < 2) {
+ sender.sendMessage(text("Use /paper debug [chunks] help for more information on a specific command", RED));
+ return;
+ }
+
+ String debugType = args[1].toLowerCase(Locale.ENGLISH);
+ switch (debugType) {
+ case "chunks":
+ if (args.length >= 3 && args[2].toLowerCase(Locale.ENGLISH).equals("help")) {
+ sender.sendMessage(text("Use /paper debug chunks [world] to dump loaded chunk information to a file", RED));
+ break;
+ }
+ File file = new File(new File(new File("."), "debug"),
+ "chunks-" + DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss").format(LocalDateTime.now()) + ".txt");
+ sender.sendMessage(text("Writing chunk information dump to " + file, GREEN));
+ try {
+ MCUtil.dumpChunks(file);
+ sender.sendMessage(text("Successfully written chunk information!", GREEN));
+ } catch (Throwable thr) {
+ MinecraftServer.LOGGER.warn("Failed to dump chunk information to file " + file.toString(), thr);
+ sender.sendMessage(text("Failed to dump chunk information, see console", RED));
+ }
+
+ break;
+ case "help":
+ // fall through to default
+ default:
+ sender.sendMessage(text("Use /paper debug [chunks] help for more information on a specific command", RED));
+ return;
+ }
+ }
+
/*
* Ported from MinecraftForge - author: LexManos <LexManos@gmail.com> - License: LGPLv2.1
*/
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index 162aa7718488a74980843944e0d026ccfd5a65a5..4e29c0a983727fc839a4bcde01d3286396b3587d 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -9,13 +9,27 @@ import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.chat.Component;
+import net.minecraft.server.level.ChunkHolder;
+import net.minecraft.server.level.ChunkMap;
+import net.minecraft.server.level.DistanceManager;
+import net.minecraft.server.level.ServerChunkCache;
import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.Ticket;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.ChunkPos;
import net.minecraft.world.level.ClipContext;
import net.minecraft.world.level.Level;
+import net.minecraft.world.level.chunk.ChunkAccess;
+import net.minecraft.world.level.chunk.ChunkStatus;
import org.apache.commons.lang.exception.ExceptionUtils;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonWriter;
import com.mojang.authlib.GameProfile;
+import com.mojang.datafixers.util.Either;
+import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
import org.bukkit.Location;
import org.bukkit.block.BlockFace;
import org.bukkit.craftbukkit.CraftWorld;
@@ -24,8 +38,11 @@ import org.spigotmc.AsyncCatcher;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
+import java.io.*;
+import java.util.ArrayList;
import java.util.List;
import java.util.Queue;
+import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.LinkedBlockingQueue;
@@ -541,6 +558,172 @@ public final class MCUtil {
return null;
}
+ public static ChunkStatus getChunkStatus(ChunkHolder chunk) {
+ List<ChunkStatus> statuses = net.minecraft.server.level.ServerChunkCache.CHUNK_STATUSES;
+ for (int i = statuses.size() - 1; i >= 0; --i) {
+ ChunkStatus curr = statuses.get(i);
+ CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> future = chunk.getFutureIfPresentUnchecked(curr);
+ if (future != ChunkHolder.UNLOADED_CHUNK_FUTURE) {
+ return curr;
+ }
+ }
+ return null; // unloaded
+ }
+
+ public static void dumpChunks(File file) throws IOException {
+ file.getParentFile().mkdirs();
+ file.createNewFile();
+ /*
+ * Json format:
+ *
+ * Main data format:
+ * -server-version:<string>
+ * -data-version:<int>
+ * -worlds:
+ * -name:<world name>
+ * -view-distance:<int>
+ * -keep-spawn-loaded:<boolean>
+ * -keep-spawn-loaded-range:<int>
+ * -visible-chunk-count:<int>
+ * -loaded-chunk-count:<int>
+ * -verified-fully-loaded-chunks:<int>
+ * -players:<array of player>
+ * -chunk-data:<array of chunks>
+ *
+ * Player format:
+ * -name:<string>
+ * -x:<double>
+ * -y:<double>
+ * -z:<double>
+ *
+ * Chunk Format:
+ * -x:<integer>
+ * -z:<integer>
+ * -ticket-level:<integer>
+ * -state:<string>
+ * -queued-for-unload:<boolean>
+ * -status:<string>
+ * -tickets:<array of tickets>
+ *
+ *
+ * Ticket format:
+ * -ticket-type:<string>
+ * -ticket-level:<int>
+ * -add-tick:<long>
+ * -object-reason:<string> // This depends on the type of ticket. ie POST_TELEPORT -> entity id
+ */
+ List<org.bukkit.World> worlds = org.bukkit.Bukkit.getWorlds();
+ JsonObject data = new JsonObject();
+
+ data.addProperty("server-version", org.bukkit.Bukkit.getVersion());
+ data.addProperty("data-version", 0);
+
+ JsonArray worldsData = new JsonArray();
+
+ for (org.bukkit.World bukkitWorld : worlds) {
+ JsonObject worldData = new JsonObject();
+
+ ServerLevel world = ((org.bukkit.craftbukkit.CraftWorld)bukkitWorld).getHandle();
+ ChunkMap chunkMap = world.getChunkSource().chunkMap;
+ Long2ObjectLinkedOpenHashMap<ChunkHolder> visibleChunks = chunkMap.visibleChunkMap;
+ DistanceManager chunkMapDistance = chunkMap.distanceManager;
+ List<ChunkHolder> allChunks = new ArrayList<>(visibleChunks.values());
+ List<ServerPlayer> players = world.players;
+
+ int fullLoadedChunks = 0;
+
+ for (ChunkHolder chunk : allChunks) {
+ if (chunk.getFullChunkNowUnchecked() != null) {
+ ++fullLoadedChunks;
+ }
+ }
+
+ // sorting by coordinate makes the log easier to read
+ allChunks.sort((ChunkHolder v1, ChunkHolder v2) -> {
+ if (v1.pos.x != v2.pos.x) {
+ return Integer.compare(v1.pos.x, v2.pos.x);
+ }
+ return Integer.compare(v1.pos.z, v2.pos.z);
+ });
+
+ worldData.addProperty("name", world.getWorld().getName());
+ worldData.addProperty("view-distance", world.spigotConfig.viewDistance);
+ worldData.addProperty("keep-spawn-loaded", world.keepSpawnInMemory);
+ worldData.addProperty("keep-spawn-loaded-range", world.paperConfig().spawn.keepSpawnLoadedRange * 16);
+ worldData.addProperty("visible-chunk-count", visibleChunks.size());
+ worldData.addProperty("loaded-chunk-count", chunkMap.entitiesInLevel.size());
+ worldData.addProperty("verified-fully-loaded-chunks", fullLoadedChunks);
+
+ JsonArray playersData = new JsonArray();
+
+ for (ServerPlayer player : players) {
+ JsonObject playerData = new JsonObject();
+
+ playerData.addProperty("name", player.getScoreboardName());
+ playerData.addProperty("x", player.getX());
+ playerData.addProperty("y", player.getY());
+ playerData.addProperty("z", player.getZ());
+
+ playersData.add(playerData);
+
+ }
+
+ worldData.add("players", playersData);
+
+ JsonArray chunksData = new JsonArray();
+
+ for (ChunkHolder playerChunk : allChunks) {
+ JsonObject chunkData = new JsonObject();
+
+ Set<Ticket<?>> tickets = chunkMapDistance.tickets.get(playerChunk.pos.longKey);
+ ChunkStatus status = getChunkStatus(playerChunk);
+
+ chunkData.addProperty("x", playerChunk.pos.x);
+ chunkData.addProperty("z", playerChunk.pos.z);
+ chunkData.addProperty("ticket-level", playerChunk.getTicketLevel());
+ chunkData.addProperty("state", ChunkHolder.getFullChunkStatus(playerChunk.getTicketLevel()).toString());
+ chunkData.addProperty("queued-for-unload", chunkMap.toDrop.contains(playerChunk.pos.longKey));
+ chunkData.addProperty("status", status == null ? "unloaded" : status.toString());
+
+ JsonArray ticketsData = new JsonArray();
+
+ if (tickets != null) {
+ for (Ticket<?> ticket : tickets) {
+ JsonObject ticketData = new JsonObject();
+
+ ticketData.addProperty("ticket-type", ticket.getType().toString());
+ ticketData.addProperty("ticket-level", ticket.getTicketLevel());
+ ticketData.addProperty("object-reason", String.valueOf(ticket.key));
+ ticketData.addProperty("add-tick", ticket.createdTick);
+
+ ticketsData.add(ticketData);
+ }
+ }
+
+ chunkData.add("tickets", ticketsData);
+ chunksData.add(chunkData);
+ }
+
+
+ worldData.add("chunk-data", chunksData);
+ worldsData.add(worldData);
+ }
+
+ data.add("worlds", worldsData);
+
+ StringWriter stringWriter = new StringWriter();
+ JsonWriter jsonWriter = new JsonWriter(stringWriter);
+ jsonWriter.setIndent(" ");
+ jsonWriter.setLenient(false);
+ Streams.write(data, jsonWriter);
+
+ String fileData = stringWriter.toString();
+
+ try (PrintStream out = new PrintStream(new FileOutputStream(file), false, "UTF-8")) {
+ out.print(fileData);
+ }
+ }
+
public static int getTicketLevelFor(net.minecraft.world.level.chunk.ChunkStatus status) {
return net.minecraft.server.level.ChunkMap.MAX_VIEW_DISTANCE + net.minecraft.world.level.chunk.ChunkStatus.getDistance(status);
}
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