194 Zeilen
10 KiB
Diff
194 Zeilen
10 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Sat, 21 Jul 2018 14:27:34 -0400
|
|
Subject: [PATCH] Duplicate UUID Resolve Option
|
|
|
|
Due to a bug in https://github.com/PaperMC/Paper/commit/2e29af3df05ec0a383f48be549d1c03200756d24
|
|
which was added all the way back in March of 2016, it was unknown (potentially not at the time)
|
|
that an entity might actually change the seed of the random object.
|
|
|
|
At some point, EntitySquid did start setting the seed. Due to this shared random, this caused
|
|
every entity to use a Random object with a predictable seed.
|
|
|
|
This has caused entities to potentially generate with the same UUID....
|
|
|
|
Over the years, servers have had entities disappear, but no sign of trouble
|
|
because CraftBukkit removed the log lines indicating that something was wrong.
|
|
|
|
We have fixed the root issue causing duplicate UUID's, however we now have chunk
|
|
files full of entities that have the same UUID as another entity!
|
|
|
|
When these chunks load, the 2nd entity will not be added to the world correctly.
|
|
|
|
If that chunk loads in a different order in the future, then it will reverse and the
|
|
missing one is now the one added to the world and not the other. This results in very
|
|
inconsistent entity behavior.
|
|
|
|
This change allows you to recover any duplicate entity by generating a new UUID for it.
|
|
This also lets you delete them instead if you don't want to risk having new entities added to
|
|
the world that you previously did not see.
|
|
|
|
But for those who are ok with leaving this inconsistent behavior, you may use WARN or NOTHING options.
|
|
|
|
It is recommended you regenerate the entities, as these were legit entities, and deserve your love.
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
|
index e4820ece5279a0324f1e7ebf0027dcb054b7ecc3..3e3a48a636c225ec113c1c64f6ffc8a37ad9169e 100644
|
|
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
|
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
|
@@ -443,6 +443,45 @@ public class PaperWorldConfig {
|
|
preventMovingIntoUnloadedChunks = getBoolean("prevent-moving-into-unloaded-chunks", false);
|
|
}
|
|
|
|
+ public enum DuplicateUUIDMode {
|
|
+ SAFE_REGEN, DELETE, NOTHING, WARN
|
|
+ }
|
|
+ public DuplicateUUIDMode duplicateUUIDMode = DuplicateUUIDMode.SAFE_REGEN;
|
|
+ public int duplicateUUIDDeleteRange = 32;
|
|
+ private void repairDuplicateUUID() {
|
|
+ String desiredMode = getString("duplicate-uuid-resolver", "saferegen").toLowerCase().trim();
|
|
+ duplicateUUIDDeleteRange = getInt("duplicate-uuid-saferegen-delete-range", duplicateUUIDDeleteRange);
|
|
+ switch (desiredMode.toLowerCase()) {
|
|
+ case "regen":
|
|
+ case "regenerate":
|
|
+ case "saferegen":
|
|
+ case "saferegenerate":
|
|
+ duplicateUUIDMode = DuplicateUUIDMode.SAFE_REGEN;
|
|
+ log("Duplicate UUID Resolve: Regenerate New UUID if distant (Delete likely duplicates within " + duplicateUUIDDeleteRange + " blocks)");
|
|
+ break;
|
|
+ case "remove":
|
|
+ case "delete":
|
|
+ duplicateUUIDMode = DuplicateUUIDMode.DELETE;
|
|
+ log("Duplicate UUID Resolve: Delete Entity");
|
|
+ break;
|
|
+ case "silent":
|
|
+ case "nothing":
|
|
+ duplicateUUIDMode = DuplicateUUIDMode.NOTHING;
|
|
+ logError("Duplicate UUID Resolve: Do Nothing (no logs) - Warning, may lose indication of bad things happening");
|
|
+ break;
|
|
+ case "log":
|
|
+ case "warn":
|
|
+ duplicateUUIDMode = DuplicateUUIDMode.WARN;
|
|
+ log("Duplicate UUID Resolve: Warn (do nothing but log it happened, may be spammy)");
|
|
+ break;
|
|
+ default:
|
|
+ duplicateUUIDMode = DuplicateUUIDMode.WARN;
|
|
+ logError("Warning: Invalid duplicate-uuid-resolver config " + desiredMode + " - must be one of: regen, delete, nothing, warn");
|
|
+ log("Duplicate UUID Resolve: Warn (do nothing but log it happened, may be spammy)");
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+
|
|
public boolean countAllMobsForSpawning = false;
|
|
private void countAllMobsForSpawning() {
|
|
countAllMobsForSpawning = getBoolean("count-all-mobs-for-spawning", false);
|
|
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
index 5ccf921bb0ed5f1d4330fec3b3fdfc654d8c5160..e3c9b1f33e146918dcdf4f3cd76fdf324acedda1 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
|
|
@@ -1,6 +1,7 @@
|
|
package net.minecraft.server.level;
|
|
|
|
import co.aikar.timings.Timing; // Paper
|
|
+import com.destroystokyo.paper.PaperWorldConfig; // Paper
|
|
import com.google.common.collect.ImmutableList;
|
|
import com.google.common.collect.ImmutableList.Builder;
|
|
import com.google.common.collect.Iterables;
|
|
@@ -32,13 +33,17 @@ import java.io.Writer;
|
|
import java.nio.file.Path;
|
|
import java.util.ArrayList;
|
|
import java.util.BitSet;
|
|
+import java.util.HashMap; // Paper
|
|
+import java.util.Collection;
|
|
import java.util.Iterator;
|
|
import java.util.List;
|
|
+import java.util.Map; // Paper
|
|
import java.util.Objects;
|
|
import java.util.Optional;
|
|
import java.util.Queue;
|
|
import java.util.Set;
|
|
import java.util.concurrent.CancellationException;
|
|
+import java.util.UUID; // Paper
|
|
import java.util.concurrent.CompletableFuture;
|
|
import java.util.concurrent.CompletionException;
|
|
import java.util.concurrent.CompletionStage;
|
|
@@ -859,6 +864,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
|
|
entity.discard();
|
|
needsRemoval = true;
|
|
}
|
|
+ checkDupeUUID(world, entity); // Paper
|
|
return !needsRemoval;
|
|
}));
|
|
// CraftBukkit end
|
|
@@ -909,6 +915,43 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
|
|
});
|
|
}
|
|
|
|
+ // Paper start
|
|
+ private static void checkDupeUUID(ServerLevel level, Entity entity) {
|
|
+ PaperWorldConfig.DuplicateUUIDMode mode = level.paperConfig.duplicateUUIDMode;
|
|
+ if (mode != PaperWorldConfig.DuplicateUUIDMode.WARN
|
|
+ && mode != PaperWorldConfig.DuplicateUUIDMode.DELETE
|
|
+ && mode != PaperWorldConfig.DuplicateUUIDMode.SAFE_REGEN) {
|
|
+ return;
|
|
+ }
|
|
+ Entity other = level.getEntity(entity.getUUID());
|
|
+
|
|
+ if (mode == PaperWorldConfig.DuplicateUUIDMode.SAFE_REGEN && other != null && !other.isRemoved()
|
|
+ && Objects.equals(other.getEncodeId(), entity.getEncodeId())
|
|
+ && entity.getBukkitEntity().getLocation().distance(other.getBukkitEntity().getLocation()) < level.paperConfig.duplicateUUIDDeleteRange
|
|
+ ) {
|
|
+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + " because it was near the duplicate and likely an actual duplicate. See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
|
|
+ entity.discard();
|
|
+ return;
|
|
+ }
|
|
+ if (other != null && !other.isRemoved()) {
|
|
+ switch (mode) {
|
|
+ case SAFE_REGEN: {
|
|
+ entity.setUUID(UUID.randomUUID());
|
|
+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", regenerated UUID for " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
|
|
+ break;
|
|
+ }
|
|
+ case DELETE: {
|
|
+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
|
|
+ entity.discard();
|
|
+ break;
|
|
+ }
|
|
+ default:
|
|
+ if (ServerLevel.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", doing nothing to " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
public CompletableFuture<Either<LevelChunk, ChunkHolder.ChunkLoadingFailure>> prepareTickingChunk(ChunkHolder holder) {
|
|
ChunkPos chunkcoordintpair = holder.getPos();
|
|
CompletableFuture<Either<List<ChunkAccess>, ChunkHolder.ChunkLoadingFailure>> completablefuture = this.getChunkRangeFuture(chunkcoordintpair, 1, (i) -> {
|
|
diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
|
|
index aadadee393332d84fad20644c349107e3ec3a92d..1407f30d467fa78bc207a91da0e6395c0a9ba83d 100644
|
|
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
|
|
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
|
|
@@ -78,7 +78,22 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
|
|
|
|
private boolean addEntityUuid(T entity) {
|
|
if (!this.knownUuids.add(entity.getUUID())) {
|
|
+ // Paper start
|
|
+ T conflict = this.visibleEntityStorage.getEntity(entity.getUUID());
|
|
+ if (conflict != null && ((Entity) conflict).isRemoved()) {
|
|
+ stopTracking(conflict); // remove the existing entity
|
|
+ return true;
|
|
+ }
|
|
+ // Paper end
|
|
PersistentEntitySectionManager.LOGGER.warn("UUID of added entity already exists: {}", entity);
|
|
+ // Paper start
|
|
+ if (net.minecraft.world.level.Level.DEBUG_ENTITIES && ((Entity) entity).level.paperConfig.duplicateUUIDMode != com.destroystokyo.paper.PaperWorldConfig.DuplicateUUIDMode.NOTHING) {
|
|
+ if (((Entity) entity).addedToWorldStack != null) {
|
|
+ ((Entity) entity).addedToWorldStack.printStackTrace();
|
|
+ }
|
|
+ net.minecraft.server.level.ServerLevel.getAddToWorldStackTrace((net.minecraft.world.entity.Entity) entity).printStackTrace();
|
|
+ }
|
|
+ // Paper end
|
|
return false;
|
|
} else {
|
|
return true;
|