Drop codec spam fix (Fixes #5936)

having spoken to mojang about this the general issue is data which shouldn't
have been saved in the first place, so if we lose this data it's not really
an issue, bar being annoying spammy. if the spam gets on your nerves, shamefully,
all you can really do is forceUpgrade to get the conversions of the way.

Dropping as this breaks other aspects of the server and bar being spammy
seems to have no other real negative outcomes

patches/server/0715-Fix-Codec-log-spam.patch

@@ -1,208 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Spottedleaf <Spottedleaf@users.noreply.github.com>
-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 9ddedd310eb0323a5a09f51a61bfb7b36503be93..a4f4a2e14e0a6348360ad99734730c1e3513da9e 100644
---- a/src/main/java/net/minecraft/server/MCUtil.java
-+++ b/src/main/java/net/minecraft/server/MCUtil.java
-@@ -718,4 +718,70 @@ 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..0cac5869be03bbbfb090c00447f75b4183a06781 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 +10,41 @@ import net.minecraft.world.level.LevelAccessor;
- import net.minecraft.world.level.block.state.BlockState;
- 
- public class ColumnPlacer extends BlockPlacer {
--    public static final Codec<ColumnPlacer> CODEC = RecordCodecBuilder.create((instance) -> {
-+    public static final Codec<ColumnPlacer> CODEC_REAL = RecordCodecBuilder.create((instance) -> { // Paper - used by CODEC below
-         return instance.group(IntProvider.NON_NEGATIVE_CODEC.fieldOf("size").forGetter((columnPlacer) -> {
-             return columnPlacer.size;
-         })).apply(instance, ColumnPlacer::new);
-     });
-+    // Paper start
-+    public static final Codec<ColumnPlacer> CODEC = new Codec<>() {
-+        @Override
-+        public <T> com.mojang.serialization.DataResult<com.mojang.datafixers.util.Pair<ColumnPlacer, T>> decode(com.mojang.serialization.DynamicOps<T> ops, T input) {
-+            /*
-+                Old format:
-+                min_size, extra_size -> BiasedToBottomInt(min_size, min_size + extra_size) to place @ root.size
-+             */
-+            if (ops.get(input, "min_size").result().isPresent() && ops.get(input, "extra_size").result().isPresent()) {
-+                // detected old format
-+                int min_size = ops.getNumberValue(ops.get(input, "min_size").result().get()).result().get().intValue();
-+                int extra_size = ops.getNumberValue(ops.get(input, "extra_size").result().get()).result().get().intValue();
-+                return com.mojang.serialization.DataResult.success(
-+                    new com.mojang.datafixers.util.Pair<>(new ColumnPlacer(net.minecraft.util.valueproviders.BiasedToBottomInt.of(
-+                        min_size, min_size + extra_size
-+                    )), input)
-+                );
-+            }
-+
-+            // not old format, forward to real codec
-+            return CODEC_REAL.decode(ops, input);
-+        }
-+
-+        @Override
-+        public <T> com.mojang.serialization.DataResult<T> encode(ColumnPlacer input, com.mojang.serialization.DynamicOps<T> ops, T prefix) {
-+            // forward to real codec
-+            return CODEC_REAL.encode(input, ops, prefix);
-+        }
-+    };
-+    // 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;