Paper/patches/server/0264-Catch-JsonParseException-in-Entity-and-TE-names.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 22 Sep 2018 15:56:59 -0400
Subject: [PATCH] Catch JsonParseException in Entity and TE names
As a result, data that no longer parses correctly will not crash the server
instead just logging the exception and continuing (and in most cases should
fix the data)
Player data is fixed pretty much immediately but some block data (like
Shulkers) may need to be changed in order for it to re-save properly
No more crashing though.
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index c9b43d077727c22a9eca738e9a75e7f1a6a5a9ee..99f56658c70f99592fb40c9df0ce3e47053d1bd5 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -13,6 +13,8 @@ import java.lang.ref.Cleaner;
import it.unimi.dsi.fastutil.objects.ReferenceArrayList;
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;
@@ -540,6 +542,21 @@ public final class MCUtil {
}
}
+ @Nullable
+ public static Component getBaseComponentFromNbt(String key, CompoundTag compound) {
+ if (!compound.contains(key)) {
+ return null;
+ }
+ String string = compound.getString(key);
+ try {
+ return Component.Serializer.fromJson(string);
+ } catch (com.google.gson.JsonParseException e) {
+ org.bukkit.Bukkit.getLogger().warning("Unable to parse " + key + " from " + compound +": " + e.getMessage());
+ }
+
+ return null;
+ }
+
public static ChunkStatus getChunkStatus(ChunkHolder chunk) {
return chunk.getChunkHolderStatus();
}
diff --git a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
index a0728e95251e8110bcecd00512c7a266fe120794..da504702bc9423774b35dff792d2dbe7fc270fe3 100644
--- a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+++ b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
@@ -72,7 +72,7 @@ public abstract class BaseCommandBlock implements CommandSource {
this.command = nbt.getString("Command");
this.successCount = nbt.getInt("SuccessCount");
if (nbt.contains("CustomName", 8)) {
- this.setName(Component.Serializer.fromJson(nbt.getString("CustomName")));
+ this.setName(net.minecraft.server.MCUtil.getBaseComponentFromNbt("CustomName", nbt)); // Paper - Catch ParseException
}
if (nbt.contains("TrackOutput", 1)) {
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
index 601cf7b9aa4b3483a2134a2db0d617ed8938ea48..c6ce5dc5dafc15f1f12b0ea4c9d55325f6a76529 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
@@ -98,7 +98,7 @@ public class BannerBlockEntity extends BlockEntity implements Nameable {
public void load(CompoundTag nbt) {
super.load(nbt);
if (nbt.contains("CustomName", 8)) {
- this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+ this.name = net.minecraft.server.MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
}
this.itemPatterns = nbt.getList("Patterns", 10);
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
index a34ae15cd4048bda965fd1449c75f3bd8f0e530b..adf67868eef7d578b7858a5afd54e37ea0d5102f 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
@@ -30,7 +30,7 @@ public abstract class BaseContainerBlockEntity extends BlockEntity implements Co
super.load(nbt);
this.lockKey = LockCode.fromTag(nbt);
if (nbt.contains("CustomName", 8)) {
- this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+ this.name = net.minecraft.server.MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
}
}
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
index 0c699c08ef85ca3339ada5c869b571581092a11d..349b89dd4d34b92d1077ddadb30c36642fd85622 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
@@ -365,7 +365,7 @@ public class BeaconBlockEntity extends BlockEntity implements MenuProvider {
this.levels = nbt.getInt("Levels"); // SPIGOT-5053, use where available
// CraftBukkit end
if (nbt.contains("CustomName", 8)) {
- this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+ this.name = net.minecraft.server.MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
}
this.lockKey = LockCode.fromTag(nbt);
diff --git a/src/main/java/net/minecraft/world/level/block/entity/EnchantmentTableBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/EnchantmentTableBlockEntity.java
index 3a8bdb788b07b0a8cda3d4b872ede52ca9a005c4..2341a5a249d455628165fc6ba508fc6d70c3dbfb 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/EnchantmentTableBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/EnchantmentTableBlockEntity.java
@@ -42,7 +42,7 @@ public class EnchantmentTableBlockEntity extends BlockEntity implements Nameable
public void load(CompoundTag nbt) {
super.load(nbt);
if (nbt.contains("CustomName", 8)) {
- this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+ this.name = net.minecraft.server.MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
}
}