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41647af74c
We cannot put blocking network I/O onto the worldgen threads, this will crash the server if it stalls
66 lines
3.0 KiB
Diff
66 lines
3.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Mariell Hoversholm <proximyst@proximyst.com>
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Date: Thu, 30 Apr 2020 16:56:54 +0200
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Subject: [PATCH] Add Raw Byte ItemStack Serialization
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Serializes using NBT which is safer for server data migrations than bukkits format.
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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index d4e5b0d8fbd885a84ae854f2dcced0423a42b4f9..7d9a91b2afb6890a160c2cd1e1cf3f0fb6a10d92 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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@@ -431,6 +431,53 @@ public final class CraftMagicNumbers implements UnsafeValues {
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public boolean isSupportedApiVersion(String apiVersion) {
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return apiVersion != null && SUPPORTED_API.contains(apiVersion);
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}
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+
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+ @Override
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+ public byte[] serializeItem(ItemStack item) {
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+ Preconditions.checkNotNull(item, "null cannot be serialized");
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+ Preconditions.checkArgument(item.getType() != Material.AIR, "air cannot be serialized");
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+
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+ return serializeNbtToBytes((item instanceof CraftItemStack ? ((CraftItemStack) item).handle : CraftItemStack.asNMSCopy(item)).save(new CompoundTag()));
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+ }
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+
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+ @Override
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+ public ItemStack deserializeItem(byte[] data) {
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+ Preconditions.checkNotNull(data, "null cannot be deserialized");
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+ Preconditions.checkArgument(data.length > 0, "cannot deserialize nothing");
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+
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+ CompoundTag compound = deserializeNbtFromBytes(data);
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+ int dataVersion = compound.getInt("DataVersion");
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+ Dynamic<Tag> converted = DataFixers.getDataFixer().update(References.ITEM_STACK, new Dynamic<Tag>(NbtOps.INSTANCE, compound), dataVersion, getDataVersion());
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+ return CraftItemStack.asCraftMirror(net.minecraft.world.item.ItemStack.of((CompoundTag) converted.getValue()));
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+ }
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+
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+ private byte[] serializeNbtToBytes(CompoundTag compound) {
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+ compound.putInt("DataVersion", getDataVersion());
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+ java.io.ByteArrayOutputStream outputStream = new java.io.ByteArrayOutputStream();
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+ try {
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+ net.minecraft.nbt.NbtIo.writeCompressed(
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+ compound,
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+ outputStream
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+ );
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+ } catch (IOException ex) {
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+ throw new RuntimeException(ex);
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+ }
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+ return outputStream.toByteArray();
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+ }
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+
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+ private CompoundTag deserializeNbtFromBytes(byte[] data) {
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+ CompoundTag compound;
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+ try {
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+ compound = net.minecraft.nbt.NbtIo.readCompressed(
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+ new java.io.ByteArrayInputStream(data)
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+ );
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+ } catch (IOException ex) {
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+ throw new RuntimeException(ex);
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+ }
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+ int dataVersion = compound.getInt("DataVersion");
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+ Preconditions.checkArgument(dataVersion <= getDataVersion(), "Newer version! Server downgrades are not supported!");
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+ return compound;
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+ }
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// Paper end
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/**
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