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-rw-r--r--patches/server/0792-Fix-Codec-log-spam.patch197
1 files changed, 197 insertions, 0 deletions
diff --git a/patches/server/0792-Fix-Codec-log-spam.patch b/patches/server/0792-Fix-Codec-log-spam.patch
new file mode 100644
index 0000000000..bc66ffbb3a
--- /dev/null
+++ b/patches/server/0792-Fix-Codec-log-spam.patch
@@ -0,0 +1,197 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Spottedleaf <[email protected]>
+Date: Sat, 19 Jun 2021 10:54:52 -0700
+Subject: [PATCH] Fix Codec log spam
+
+Mojang did NOT add dataconverters for world gen configurations
+that they CHANGED. So, the codec fails to parse old data.
+
+This fixes two instances:
+- IntProvider is new and Mojang did not account for old data.
+ Thankfully, only ColumnPlace needed to be special cased.
+- TreeConfiguration had changes. Thankfully, they were
+ only renames for one value and thankfully defaults could
+ be provided for two new values (WITHOUT changing behavior).
+
+diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
+index 15fb4ee2066df1c8ce341913a64f350fb8b9718c..b5be0486d1cffe60808948b4b0bfd709664b2ae4 100644
+--- a/src/main/java/net/minecraft/server/MCUtil.java
++++ b/src/main/java/net/minecraft/server/MCUtil.java
+@@ -723,4 +723,70 @@ public final class MCUtil {
+ 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);
+ }
++
++ public static <A> com.mojang.serialization.MapCodec<A> fieldWithFallbacks(com.mojang.serialization.Codec<A> codec, String name, String ...fallback) {
++ return com.mojang.serialization.MapCodec.of(
++ new com.mojang.serialization.codecs.FieldEncoder<>(name, codec),
++ new FieldFallbackDecoder<>(name, java.util.Arrays.asList(fallback), codec),
++ () -> "FieldFallback[" + name + ": " + codec.toString() + "]"
++ );
++ }
++
++ // This is likely a common occurrence, sadly
++ public static final class FieldFallbackDecoder<A> extends com.mojang.serialization.MapDecoder.Implementation<A> {
++ protected final String name;
++ protected final List<String> fallback;
++ private final com.mojang.serialization.Decoder<A> elementCodec;
++
++ public FieldFallbackDecoder(final String name, final List<String> fallback, final com.mojang.serialization.Decoder<A> elementCodec) {
++ this.name = name;
++ this.fallback = fallback;
++ this.elementCodec = elementCodec;
++ }
++
++ @Override
++ public <T> com.mojang.serialization.DataResult<A> decode(final com.mojang.serialization.DynamicOps<T> ops, final com.mojang.serialization.MapLike<T> input) {
++ T value = input.get(name);
++ if (value == null) {
++ for (String fall : fallback) {
++ value = input.get(fall);
++ if (value != null) {
++ break;
++ }
++ }
++ if (value == null) {
++ return com.mojang.serialization.DataResult.error("No key " + name + " in " + input);
++ }
++ }
++ return elementCodec.parse(ops, value);
++ }
++
++ @Override
++ public <T> java.util.stream.Stream<T> keys(final com.mojang.serialization.DynamicOps<T> ops) {
++ return java.util.stream.Stream.of(ops.createString(name));
++ }
++
++ @Override
++ public boolean equals(final Object o) {
++ if (this == o) {
++ return true;
++ }
++ if (o == null || getClass() != o.getClass()) {
++ return false;
++ }
++ final FieldFallbackDecoder<?> that = (FieldFallbackDecoder<?>)o;
++ return java.util.Objects.equals(name, that.name) && java.util.Objects.equals(elementCodec, that.elementCodec)
++ && java.util.Objects.equals(fallback, that.fallback);
++ }
++
++ @Override
++ public int hashCode() {
++ return java.util.Objects.hash(name, fallback, elementCodec);
++ }
++
++ @Override
++ public String toString() {
++ return "FieldDecoder[" + name + ": " + elementCodec + ']';
++ }
++ }
+ }
+diff --git a/src/main/java/net/minecraft/util/valueproviders/IntProvider.java b/src/main/java/net/minecraft/util/valueproviders/IntProvider.java
+index 020a19cd683dd3779c5116d12b3cdcd3b3ca69b4..c81a0eec12436c10869bfdcc21af09173f438331 100644
+--- a/src/main/java/net/minecraft/util/valueproviders/IntProvider.java
++++ b/src/main/java/net/minecraft/util/valueproviders/IntProvider.java
+@@ -9,13 +9,44 @@ import net.minecraft.core.Registry;
+
+ public abstract class IntProvider {
+ private static final Codec<Either<Integer, IntProvider>> CONSTANT_OR_DISPATCH_CODEC = Codec.either(Codec.INT, Registry.INT_PROVIDER_TYPES.dispatch(IntProvider::getType, IntProviderType::codec));
+- public static final Codec<IntProvider> CODEC = CONSTANT_OR_DISPATCH_CODEC.xmap((either) -> {
++ public static final Codec<IntProvider> CODEC_REAL = CONSTANT_OR_DISPATCH_CODEC.xmap((either) -> { // Paper - used by CODEC below
+ return either.map(ConstantInt::of, (intProvider) -> {
+ return intProvider;
+ });
+ }, (intProvider) -> {
+ return intProvider.getType() == IntProviderType.CONSTANT ? Either.left(((ConstantInt)intProvider).getValue()) : Either.right(intProvider);
+ });
++ // Paper start
++ public static final Codec<IntProvider> CODEC = new Codec<>() {
++ @Override
++ public <T> DataResult<com.mojang.datafixers.util.Pair<IntProvider, T>> decode(com.mojang.serialization.DynamicOps<T> ops, T input) {
++ /*
++ UniformInt:
++ count -> { (old format)
++ base, spread
++ } -> {UniformInt} { (new format & type)
++ base, base + spread
++ } */
++
++
++ if (ops.get(input, "base").result().isPresent() && ops.get(input, "spread").result().isPresent()) {
++ // detected old format
++ int base = ops.getNumberValue(ops.get(input, "base").result().get()).result().get().intValue();
++ int spread = ops.getNumberValue(ops.get(input, "spread").result().get()).result().get().intValue();
++ return DataResult.success(new com.mojang.datafixers.util.Pair<>(UniformInt.of(base, base + spread), input));
++ }
++
++ // not old format, forward to real codec
++ return CODEC_REAL.decode(ops, input);
++ }
++
++ @Override
++ public <T> DataResult<T> encode(IntProvider input, com.mojang.serialization.DynamicOps<T> ops, T prefix) {
++ // forward to real codec
++ return CODEC_REAL.encode(input, ops, prefix);
++ }
++ };
++ // Paper end
+ public static final Codec<IntProvider> NON_NEGATIVE_CODEC = codec(0, Integer.MAX_VALUE);
+ public static final Codec<IntProvider> POSITIVE_CODEC = codec(1, Integer.MAX_VALUE);
+
+diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/blockplacers/ColumnPlacer.java b/src/main/java/net/minecraft/world/level/levelgen/feature/blockplacers/ColumnPlacer.java
+index 05bba5410fbd9f8e333584ccbd65a909f3040322..82859e1b048ba8a96cc67e085e9ed01b6bd3a6cd 100644
+--- a/src/main/java/net/minecraft/world/level/levelgen/feature/blockplacers/ColumnPlacer.java
++++ b/src/main/java/net/minecraft/world/level/levelgen/feature/blockplacers/ColumnPlacer.java
+@@ -10,11 +10,28 @@ import net.minecraft.world.level.LevelAccessor;
+ import net.minecraft.world.level.block.state.BlockState;
+
+ public class ColumnPlacer extends BlockPlacer {
++ // Paper start
+ public static final Codec<ColumnPlacer> CODEC = RecordCodecBuilder.create((instance) -> {
+- return instance.group(IntProvider.NON_NEGATIVE_CODEC.fieldOf("size").forGetter((columnPlacer) -> {
+- return columnPlacer.size;
+- })).apply(instance, ColumnPlacer::new);
++ return instance.group(
++ IntProvider.NON_NEGATIVE_CODEC.optionalFieldOf("size").forGetter((columnPlacer) -> {
++ return java.util.Optional.of(columnPlacer.size);
++ }),
++ Codec.INT.optionalFieldOf("min_size").forGetter((columnPlacer) -> {
++ return java.util.Optional.empty();
++ }),
++ Codec.INT.optionalFieldOf("extra_size").forGetter((columnPlacer) -> {
++ return java.util.Optional.empty();
++ })
++ ).apply(instance, ColumnPlacer::new);
+ });
++ public ColumnPlacer(java.util.Optional<IntProvider> size, java.util.Optional<Integer> minSize, java.util.Optional<Integer> extraSize) {
++ if (size.isPresent()) {
++ this.size = size.get();
++ } else {
++ this.size = net.minecraft.util.valueproviders.BiasedToBottomInt.of(minSize.get().intValue(), minSize.get().intValue() + extraSize.get().intValue());
++ }
++ }
++ // Paper end
+ private final IntProvider size;
+
+ public ColumnPlacer(IntProvider size) {
+diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/configurations/TreeConfiguration.java b/src/main/java/net/minecraft/world/level/levelgen/feature/configurations/TreeConfiguration.java
+index 5da68897148192905c2747676c1ee2ee649f923f..b990099cf274f8cb0d96c139345cf0bf328affd6 100644
+--- a/src/main/java/net/minecraft/world/level/levelgen/feature/configurations/TreeConfiguration.java
++++ b/src/main/java/net/minecraft/world/level/levelgen/feature/configurations/TreeConfiguration.java
+@@ -18,13 +18,13 @@ public class TreeConfiguration implements FeatureConfiguration {
+ return treeConfiguration.trunkProvider;
+ }), TrunkPlacer.CODEC.fieldOf("trunk_placer").forGetter((treeConfiguration) -> {
+ return treeConfiguration.trunkPlacer;
+- }), BlockStateProvider.CODEC.fieldOf("foliage_provider").forGetter((treeConfiguration) -> {
++ }), net.minecraft.server.MCUtil.fieldWithFallbacks(BlockStateProvider.CODEC, "foliage_provider", "leaves_provider").forGetter((treeConfiguration) -> { // Paper - provide fallback for rename
+ return treeConfiguration.foliageProvider;
+- }), BlockStateProvider.CODEC.fieldOf("sapling_provider").forGetter((treeConfiguration) -> {
++ }), BlockStateProvider.CODEC.optionalFieldOf("sapling_provider", new SimpleStateProvider(Blocks.OAK_SAPLING.defaultBlockState())).forGetter((treeConfiguration) -> { // Paper - provide default - it looks like for now this is OK because it's just used to check canSurvive. Same check happens in 1.16.5 for the default we provide - so it should retain behavior...
+ return treeConfiguration.saplingProvider;
+ }), FoliagePlacer.CODEC.fieldOf("foliage_placer").forGetter((treeConfiguration) -> {
+ return treeConfiguration.foliagePlacer;
+- }), BlockStateProvider.CODEC.fieldOf("dirt_provider").forGetter((treeConfiguration) -> {
++ }), BlockStateProvider.CODEC.optionalFieldOf("dirt_provider", new SimpleStateProvider(Blocks.DIRT.defaultBlockState())).forGetter((treeConfiguration) -> { // Paper - provide defaults, old data DOES NOT have this key (thankfully ALL OLD DATA used DIRT)
+ return treeConfiguration.dirtProvider;
+ }), FeatureSize.CODEC.fieldOf("minimum_size").forGetter((treeConfiguration) -> {
+ return treeConfiguration.minimumSize;