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Add Debug Entities option to debug dupe uuid issues

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Add -Ddebug.entities=true to your JVM flags to enable more logging
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Aikar 2018-07-21 10:29:14 -04:00
parent 82bcd1408a
commit c1c9d850f1
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Spigot-Server-Patches/0336-Add-Debug-Entities-option-to-debug-dupe-uuid-issues.patch Normal file
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@ -0,0 +1,95 @@
From b061a231214e88cde43e0c3880f779723828b2b4 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 21 Jul 2018 08:25:40 -0400
Subject: [PATCH] Add Debug Entities option to debug dupe uuid issues
Add -Ddebug.entities=true to your JVM flags to gain more information
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index f6b755863..108654d63 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -73,6 +73,7 @@ public abstract class Entity implements ICommandListener, KeyedObject { // Paper
}
return bukkitEntity;
}
+ Throwable addedToWorldStack; // Paper - entity debug
// CraftBukikt end
private static final Logger a = LogManager.getLogger();
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index b16324e1a..994d4bbb8 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -7,6 +7,7 @@ import com.google.common.util.concurrent.ListenableFuture;
import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
+import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
@@ -53,6 +54,10 @@ public class WorldServer extends World implements IAsyncTaskHandler {
private final List<NextTickListEntry> W = Lists.newArrayList();
// CraftBukkit start
+ private static final boolean DEBUG_ENTITIES = Boolean.getBoolean("debug.entities"); // Paper
+ private static Throwable getAddToWorldStackTrace(Entity entity) {
+ return new Throwable(entity + " Added to world at " + new Date());
+ }
public final int dimension;
// Add env and gen to constructor
@@ -1160,6 +1165,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
private boolean j(Entity entity) {
if (entity.dead) {
WorldServer.a.warn("Tried to add entity {} but it was marked as removed already", EntityTypes.a(entity)); // CraftBukkit // Paper
+ if (DEBUG_ENTITIES) getAddToWorldStackTrace(entity).printStackTrace();
return false;
} else {
UUID uuid = entity.getUniqueID();
@@ -1171,8 +1177,14 @@ public class WorldServer extends World implements IAsyncTaskHandler {
this.f.remove(entity1);
} else {
if (!(entity instanceof EntityHuman)) {
- WorldServer.a.error("Keeping entity {} that already exists with UUID {} - " + entity1, EntityTypes.a(entity1), uuid.toString()); // CraftBukkit // Paper
+ WorldServer.a.error("Keeping entity {} that already exists with UUID {}", entity1, uuid.toString()); // CraftBukkit // Paper
WorldServer.a.error("Deleting duplicate entity {}", entity); // Paper
+ if (DEBUG_ENTITIES) {
+ if (entity1.addedToWorldStack != null) {
+ entity1.addedToWorldStack.printStackTrace();
+ }
+ getAddToWorldStackTrace(entity).printStackTrace();
+ }
return false;
}
@@ -1189,7 +1201,24 @@ public class WorldServer extends World implements IAsyncTaskHandler {
protected void b(Entity entity) {
super.b(entity);
this.entitiesById.a(entity.getId(), entity);
- this.entitiesByUUID.put(entity.getUniqueID(), entity);
+ // Paper start
+ if (DEBUG_ENTITIES) {
+ entity.addedToWorldStack = getAddToWorldStackTrace(entity);
+ }
+ Entity old = this.entitiesByUUID.put(entity.getUniqueID(), entity);
+ if (old != null && old.getId() != entity.getId() && old.valid) {
+ Logger logger = LogManager.getLogger();
+ logger.error("Overwrote an existing entity " + old + " with " + entity);
+ if (DEBUG_ENTITIES) {
+ if (old.addedToWorldStack != null) {
+ old.addedToWorldStack.printStackTrace();
+ } else {
+ logger.error("Oddly, the old entity was not added to the world in the normal way. Plugins?");
+ }
+ entity.addedToWorldStack.printStackTrace();
+ }
+ }
+ // Paper end
Entity[] aentity = entity.bb();
if (aentity != null) {
--
2.18.0