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Code Issues Releases Activity
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e7bbd0ba3f78d484a6a4dc32176a4af9cebae73b
Leaf/patches/server/0010-2-Add-Linear-region-format.patch
lilingfengdev 523bf20d36 Rename
2024-01-14 11:16:42 +08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Triassic <techbyteofficial9@gmail.com>
Date: Sat, 23 Sep 2023 01:18:14 +0300
Subject: [PATCH] Add Linear region format
diff --git a/build.gradle.kts b/build.gradle.kts
index 81ec1a0a7dac7f74f6b9709ae8b284a12c7e6433..3f6f9e9386d7c5d0f4a4715fb5ac9293784c1c75 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -34,6 +34,10 @@ dependencies {
alsoShade(log4jPlugins.output)
implementation("io.netty:netty-codec-haproxy:4.1.97.Final") // Paper - Add support for proxy protocol
// Paper end
+ // LinearPurpur start - Linear format
+ implementation("com.github.luben:zstd-jni:1.5.5-11")
+ implementation("org.lz4:lz4-java:1.8.0")
+ // LinearPurpur end
implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
implementation("org.ow2.asm:asm:9.5")
implementation("org.ow2.asm:asm-commons:9.5") // Paper - ASM event executor generation
diff --git a/src/main/java/com/destroystokyo/paper/io/PaperFileIOThread.java b/src/main/java/com/destroystokyo/paper/io/PaperFileIOThread.java
index f2c27e0ac65be4b75c1d86ef6fd45fdb538d96ac..bcd35b189bf5ec44733161df952ef6957f7fbe79 100644
--- a/src/main/java/com/destroystokyo/paper/io/PaperFileIOThread.java
+++ b/src/main/java/com/destroystokyo/paper/io/PaperFileIOThread.java
@@ -314,8 +314,8 @@ public final class PaperFileIOThread extends QueueExecutorThread {
public abstract void writeData(final int x, final int z, final CompoundTag compound) throws IOException;
public abstract CompoundTag readData(final int x, final int z) throws IOException;
- public abstract <T> T computeForRegionFile(final int chunkX, final int chunkZ, final Function<RegionFile, T> function);
- public abstract <T> T computeForRegionFileIfLoaded(final int chunkX, final int chunkZ, final Function<RegionFile, T> function);
+ public abstract <T> T computeForRegionFile(final int chunkX, final int chunkZ, final Function<org.purpurmc.purpur.region.AbstractRegionFile, T> function); // LinearPurpur
+ public abstract <T> T computeForRegionFileIfLoaded(final int chunkX, final int chunkZ, final Function<org.purpurmc.purpur.region.AbstractRegionFile, T> function); // LinearPurpur
public static final class InProgressWrite {
public long writeCounter;
diff --git a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java b/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
index 8a11e10b01fa012b2f98b1c193c53251e848f909..17b6199a8b7184cf5b4b59d88ed8bdcae88bf0bf 100644
--- a/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
+++ b/src/main/java/io/papermc/paper/chunk/system/io/RegionFileIOThread.java
@@ -811,7 +811,7 @@ public final class RegionFileIOThread extends PrioritisedQueueExecutorThread {
final ChunkDataController taskController) {
final ChunkPos chunkPos = new ChunkPos(chunkX, chunkZ);
if (intendingToBlock) {
- return taskController.computeForRegionFile(chunkX, chunkZ, true, (final RegionFile file) -> {
+ return taskController.computeForRegionFile(chunkX, chunkZ, true, (final org.purpurmc.purpur.region.AbstractRegionFile file) -> { // LinearPurpur
if (file == null) { // null if no regionfile exists
return Boolean.FALSE;
}
@@ -824,7 +824,7 @@ public final class RegionFileIOThread extends PrioritisedQueueExecutorThread {
return Boolean.FALSE;
} // else: it either exists or is not known, fall back to checking the loaded region file
- return taskController.computeForRegionFileIfLoaded(chunkX, chunkZ, (final RegionFile file) -> {
+ return taskController.computeForRegionFileIfLoaded(chunkX, chunkZ, (final org.purpurmc.purpur.region.AbstractRegionFile file) -> { // LinearPurpur
if (file == null) { // null if not loaded
// not sure at this point, let the I/O thread figure it out
return Boolean.TRUE;
@@ -1126,9 +1126,9 @@ public final class RegionFileIOThread extends PrioritisedQueueExecutorThread {
return this.getCache().doesRegionFileNotExistNoIO(new ChunkPos(chunkX, chunkZ));
}
- public <T> T computeForRegionFile(final int chunkX, final int chunkZ, final boolean existingOnly, final Function<RegionFile, T> function) {
+ public <T> T computeForRegionFile(final int chunkX, final int chunkZ, final boolean existingOnly, final Function<org.purpurmc.purpur.region.AbstractRegionFile, T> function) { // LinearPurpur
final RegionFileStorage cache = this.getCache();
- final RegionFile regionFile;
+ final org.purpurmc.purpur.region.AbstractRegionFile regionFile; // LinearPurpur
synchronized (cache) {
try {
regionFile = cache.getRegionFile(new ChunkPos(chunkX, chunkZ), existingOnly, true);
@@ -1141,19 +1141,19 @@ public final class RegionFileIOThread extends PrioritisedQueueExecutorThread {
return function.apply(regionFile);
} finally {
if (regionFile != null) {
- regionFile.fileLock.unlock();
+ regionFile.getFileLock().unlock(); // LinearPurpur
}
}
}
- public <T> T computeForRegionFileIfLoaded(final int chunkX, final int chunkZ, final Function<RegionFile, T> function) {
+ public <T> T computeForRegionFileIfLoaded(final int chunkX, final int chunkZ, final Function<org.purpurmc.purpur.region.AbstractRegionFile, T> function) { // LinearPurpur
final RegionFileStorage cache = this.getCache();
- final RegionFile regionFile;
+ final org.purpurmc.purpur.region.AbstractRegionFile regionFile; // LinearPurpur
synchronized (cache) {
regionFile = cache.getRegionFileIfLoaded(new ChunkPos(chunkX, chunkZ));
if (regionFile != null) {
- regionFile.fileLock.lock();
+ regionFile.getFileLock().lock(); // LinearPurpur
}
}
@@ -1161,7 +1161,7 @@ public final class RegionFileIOThread extends PrioritisedQueueExecutorThread {
return function.apply(regionFile);
} finally {
if (regionFile != null) {
- regionFile.fileLock.unlock();
+ regionFile.getFileLock().unlock(); // LinearPurpur
}
}
}
diff --git a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
index 513833c2ea23df5b079d157bc5cb89d5c9754c0b..5c0718146152db7655d10ed0a9477b1b49e552f9 100644
--- a/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
+++ b/src/main/java/io/papermc/paper/world/ThreadedWorldUpgrader.java
@@ -84,8 +84,15 @@ public class ThreadedWorldUpgrader {
LOGGER.info("Found " + regionFiles.length + " regionfiles to convert");
LOGGER.info("Starting conversion now for world " + this.worldName);
+ // LinearPurpur start
+ org.purpurmc.purpur.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.regionFormatName;
+ int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.regionFormatLinearCompressionLevel;
+ boolean linearCrashOnBrokenSymlink = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.linearCrashOnBrokenSymlink;
+ LOGGER.info("Using format " + formatName + " (" + linearCompression + ")");
+ // LinearPurpur end
+
final WorldInfo info = new WorldInfo(() -> worldPersistentData,
- new ChunkStorage(regionFolder.toPath(), this.dataFixer, false), this.removeCaches, this.dimensionType, this.generatorKey);
+ new ChunkStorage(formatName, linearCompression, linearCrashOnBrokenSymlink, regionFolder.toPath(), this.dataFixer, false), this.removeCaches, this.dimensionType, this.generatorKey); // LinearPurpur
long expectedChunks = (long)regionFiles.length * (32L * 32L);
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 2631c05a3855c71eff3f8cf8d13920430f929a13..c7c633ae31b8a7d6e7926a3068d53518d2330ac9 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -247,7 +247,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
// Paper end - optimise chunk tick iteration
public ChunkMap(ServerLevel world, LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, StructureTemplateManager structureTemplateManager, Executor executor, BlockableEventLoop<Runnable> mainThreadExecutor, LightChunkGetter chunkProvider, ChunkGenerator chunkGenerator, ChunkProgressListener worldGenerationProgressListener, ChunkStatusUpdateListener chunkStatusChangeListener, Supplier<DimensionDataStorage> persistentStateManagerFactory, int viewDistance, boolean dsync) {
- super(session.getDimensionPath(world.dimension()).resolve("region"), dataFixer, dsync);
+ super(world.getLevel().purpurConfig.regionFormatName, world.getLevel().purpurConfig.regionFormatLinearCompressionLevel, world.getLevel().purpurConfig.linearCrashOnBrokenSymlink, session.getDimensionPath(world.dimension()).resolve("region"), dataFixer, dsync); // LinearPurpur
// Paper - rewrite chunk system
this.tickingGenerated = new AtomicInteger();
this.playerMap = new PlayerMap();
@@ -292,7 +292,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
this.lightEngine = new ThreadedLevelLightEngine(chunkProvider, this, this.level.dimensionType().hasSkyLight(), null, null); // Paper - rewrite chunk system
this.distanceManager = new ChunkMap.ChunkDistanceManager(executor, mainThreadExecutor);
this.overworldDataStorage = persistentStateManagerFactory;
- this.poiManager = new PoiManager(path.resolve("poi"), dataFixer, dsync, iregistrycustom, world);
+ this.poiManager = new PoiManager(this.level.purpurConfig.regionFormatName, this.level.purpurConfig.regionFormatLinearCompressionLevel, this.level.purpurConfig.linearCrashOnBrokenSymlink, path.resolve("poi"), dataFixer, dsync, iregistrycustom, world); // LinearPurpur
this.setServerViewDistance(viewDistance);
// Paper start
this.dataRegionManager = new io.papermc.paper.chunk.SingleThreadChunkRegionManager(this.level, 2, (1.0 / 3.0), 1, 6, "Data", DataRegionData::new, DataRegionSectionData::new);
@@ -886,13 +886,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
// Paper start - chunk status cache "api"
public ChunkStatus getChunkStatusOnDiskIfCached(ChunkPos chunkPos) {
- net.minecraft.world.level.chunk.storage.RegionFile regionFile = regionFileCache.getRegionFileIfLoaded(chunkPos);
+ org.purpurmc.purpur.region.AbstractRegionFile regionFile = regionFileCache.getRegionFileIfLoaded(chunkPos); // LinearPurpur
return regionFile == null ? null : regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
}
public ChunkStatus getChunkStatusOnDisk(ChunkPos chunkPos) throws IOException {
- net.minecraft.world.level.chunk.storage.RegionFile regionFile = regionFileCache.getRegionFile(chunkPos, true);
+ org.purpurmc.purpur.region.AbstractRegionFile regionFile = regionFileCache.getRegionFile(chunkPos, true); // LinearPurpur
if (regionFile == null || !regionFileCache.chunkExists(chunkPos)) {
return null;
@@ -910,7 +910,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
}
public void updateChunkStatusOnDisk(ChunkPos chunkPos, @Nullable CompoundTag compound) throws IOException {
- net.minecraft.world.level.chunk.storage.RegionFile regionFile = regionFileCache.getRegionFile(chunkPos, false);
+ org.purpurmc.purpur.region.AbstractRegionFile regionFile = regionFileCache.getRegionFile(chunkPos, false); // LinearPurpur
regionFile.setStatus(chunkPos.x, chunkPos.z, ChunkSerializer.getStatus(compound));
}
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 90000d74cfb009e2cbd7336ae11077d67ef67f7b..c630f62bf98f92fd4a5d91da20d2274f8af1b6fd 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -426,8 +426,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
private static final class EntityRegionFileStorage extends net.minecraft.world.level.chunk.storage.RegionFileStorage {
- public EntityRegionFileStorage(Path directory, boolean dsync) {
- super(directory, dsync);
+ public EntityRegionFileStorage(org.purpurmc.purpur.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // LinearPurpur
+ super(format, linearCompression, linearCrashOnBrokenSymlink, directory, dsync); // LinearPurpur
}
protected void write(ChunkPos pos, net.minecraft.nbt.CompoundTag nbt) throws IOException {
@@ -753,7 +753,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
// CraftBukkit end
boolean flag2 = minecraftserver.forceSynchronousWrites();
DataFixer datafixer = minecraftserver.getFixerUpper();
- this.entityStorage = new EntityRegionFileStorage(convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), flag2); // Paper - rewrite chunk system //EntityPersistentStorage<Entity> entitypersistentstorage = new EntityStorage(this, convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), datafixer, flag2, minecraftserver);
+ this.entityStorage = new EntityRegionFileStorage(this.getLevel().purpurConfig.regionFormatName, this.getLevel().purpurConfig.regionFormatLinearCompressionLevel, this.getLevel().purpurConfig.linearCrashOnBrokenSymlink, convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), flag2); // Paper - rewrite chunk system //EntityPersistentStorage<Entity> entitypersistentstorage = new EntityStorage(this, convertable_conversionsession.getDimensionPath(resourcekey).resolve("entities"), datafixer, flag2, minecraftserver); // LinearPurpur
// this.entityManager = new PersistentEntitySectionManager<>(Entity.class, new ServerLevel.EntityCallbacks(), entitypersistentstorage, this.entitySliceManager); // Paper // Paper - rewrite chunk system
StructureTemplateManager structuretemplatemanager = minecraftserver.getStructureManager();
diff --git a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
index f2a7cb6ebed7a4b4019a09af2a025f624f6fe9c9..61c3730a1448e89c59983a1e92507592f61de964 100644
--- a/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
+++ b/src/main/java/net/minecraft/util/worldupdate/WorldUpgrader.java
@@ -61,7 +61,7 @@ public class WorldUpgrader {
private volatile int skipped;
private final Reference2FloatMap<ResourceKey<Level>> progressMap = Reference2FloatMaps.synchronize(new Reference2FloatOpenHashMap());
private volatile Component status = Component.translatable("optimizeWorld.stage.counting");
- public static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.mca$");
+ public static Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.(linear | mca)$"); // LinearPurpur
private final DimensionDataStorage overworldDataStorage;
public WorldUpgrader(LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, Registry<LevelStem> dimensionOptionsRegistry, boolean eraseCache) {
@@ -116,7 +116,13 @@ public class WorldUpgrader {
ResourceKey<Level> resourcekey1 = (ResourceKey) iterator1.next();
Path path = this.levelStorage.getDimensionPath(resourcekey1);
- builder1.put(resourcekey1, new ChunkStorage(path.resolve("region"), this.dataFixer, true));
+ // LinearPurpur start
+ String worldName = this.levelStorage.getLevelId();
+ org.purpurmc.purpur.region.RegionFileFormat formatName = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.regionFormatName;
+ int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.regionFormatLinearCompressionLevel;
+ boolean linearCrashOnBrokenSymlink = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.linearCrashOnBrokenSymlink;
+ builder1.put(resourcekey1, new ChunkStorage(formatName, linearCompression, linearCrashOnBrokenSymlink, path.resolve("region"), this.dataFixer, true));
+ // LinearPurpur end
}
ImmutableMap<ResourceKey<Level>, ChunkStorage> immutablemap1 = builder1.build();
@@ -235,7 +241,7 @@ public class WorldUpgrader {
File file = this.levelStorage.getDimensionPath(world).toFile();
File file1 = new File(file, "region");
File[] afile = file1.listFiles((file2, s) -> {
- return s.endsWith(".mca");
+ return s.endsWith(".mca") || s.endsWith(".linear"); // LinearPurpur
});
if (afile == null) {
@@ -254,7 +260,11 @@ public class WorldUpgrader {
int l = Integer.parseInt(matcher.group(2)) << 5;
try {
- RegionFile regionfile = new RegionFile(file2.toPath(), file1.toPath(), true);
+ // LinearPurpur start
+ String worldName = this.levelStorage.getLevelId();
+ int linearCompression = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorld(worldName)).getHandle().purpurConfig.regionFormatLinearCompressionLevel;
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = org.purpurmc.purpur.region.AbstractRegionFileFactory.getAbstractRegionFile(linearCompression, file2.toPath(), file1.toPath(), true);
+ // LinearPurpur end
try {
for (int i1 = 0; i1 < 32; ++i1) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
index 12a7aaeaa8b4b788b620b1985591c3b93253ccd5..af639cc29999a49f4f2d494dc82f99577c6d9d1a 100644
--- a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
+++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
@@ -57,8 +57,8 @@ public class PoiManager extends SectionStorage<PoiSection> {
// Paper end - rewrite chunk system
- public PoiManager(Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) {
- super(path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world);
+ public PoiManager(org.purpurmc.purpur.region.RegionFileFormat formatName, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, DataFixer dataFixer, boolean dsync, RegistryAccess registryManager, LevelHeightAccessor world) { // LinearPurpur
+ super(formatName, linearCompression, linearCrashOnBrokenSymlink, path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, registryManager, world); // LinearPurpur
this.world = (net.minecraft.server.level.ServerLevel)world; // Paper - rewrite chunk system
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
index 8ebecb588058da174b0e0e19e54fcddfeeca1422..473484d8187a3f2224943cd0cbbdbc28334edb61 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
@@ -37,11 +37,11 @@ public class ChunkStorage implements AutoCloseable {
public final RegionFileStorage regionFileCache;
// Paper end - async chunk loading
- public ChunkStorage(Path directory, DataFixer dataFixer, boolean dsync) {
+ public ChunkStorage(org.purpurmc.purpur.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, DataFixer dataFixer, boolean dsync) { // LinearPurpur
this.fixerUpper = dataFixer;
// Paper start - async chunk io
// remove IO worker
- this.regionFileCache = new RegionFileStorage(directory, dsync, true); // Paper - nuke IOWorker // Paper
+ this.regionFileCache = new RegionFileStorage(format, linearCompression, linearCrashOnBrokenSymlink, directory, dsync, true); // Paper - nuke IOWorker // Paper // LinearPurpur
// Paper end - async chunk io
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
index 9248769e6d357f6eec68945fd7700e79b2942c41..31bdeb271088f83429d97e2d28610bce930be702 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -26,7 +26,7 @@ import net.minecraft.nbt.NbtIo; // Paper
import net.minecraft.world.level.ChunkPos;
import org.slf4j.Logger;
-public class RegionFile implements AutoCloseable {
+public class RegionFile implements AutoCloseable, org.purpurmc.purpur.region.AbstractRegionFile { // LinearPurpur
private static final Logger LOGGER = LogUtils.getLogger();
private static final int SECTOR_BYTES = 4096;
@@ -50,6 +50,16 @@ public class RegionFile implements AutoCloseable {
public final java.util.concurrent.locks.ReentrantLock fileLock = new java.util.concurrent.locks.ReentrantLock(); // Paper
public final Path regionFile; // Paper
+ // LinearPurpur start - Abstract getters
+ public Path getRegionFile() {
+ return this.regionFile;
+ }
+
+ public java.util.concurrent.locks.ReentrantLock getFileLock() {
+ return this.fileLock;
+ }
+ // LinearPurpur end
+
// Paper start - try to recover from RegionFile header corruption
private static long roundToSectors(long bytes) {
long sectors = bytes >>> 12; // 4096 = 2^12
@@ -128,7 +138,7 @@ public class RegionFile implements AutoCloseable {
}
// note: only call for CHUNK regionfiles
- boolean recalculateHeader() throws IOException {
+ public boolean recalculateHeader() throws IOException { // LinearPurpur
if (!this.canRecalcHeader) {
return false;
}
@@ -954,10 +964,10 @@ public class RegionFile implements AutoCloseable {
private static int getChunkIndex(int x, int z) {
return (x & 31) + (z & 31) * 32;
}
- synchronized boolean isOversized(int x, int z) {
+ public synchronized boolean isOversized(int x, int z) { // LinearPurpur
return this.oversized[getChunkIndex(x, z)] == 1;
}
- synchronized void setOversized(int x, int z, boolean oversized) throws IOException {
+ public synchronized void setOversized(int x, int z, boolean oversized) throws IOException { // LinearPurpur
final int offset = getChunkIndex(x, z);
boolean previous = this.oversized[offset] == 1;
this.oversized[offset] = (byte) (oversized ? 1 : 0);
@@ -996,7 +1006,7 @@ public class RegionFile implements AutoCloseable {
return this.regionFile.getParent().resolve(this.regionFile.getFileName().toString().replaceAll("\\.mca$", "") + "_oversized_" + x + "_" + z + ".nbt");
}
- synchronized CompoundTag getOversizedData(int x, int z) throws IOException {
+ public synchronized CompoundTag getOversizedData(int x, int z) throws IOException { // LinearPurpur
Path file = getOversizedFile(x, z);
try (DataInputStream out = new DataInputStream(new java.io.BufferedInputStream(new InflaterInputStream(Files.newInputStream(file))))) {
return NbtIo.read((java.io.DataInput) out);
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
index 6eaeb2db0da59611501f2b1a63b5b48816a0ba48..ba10c7ffb08f806d8d9d0291276a7321421651fc 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
@@ -19,11 +19,17 @@ import net.minecraft.world.level.ChunkPos;
public class RegionFileStorage implements AutoCloseable {
+ private static final org.slf4j.Logger LOGGER = com.mojang.logging.LogUtils.getLogger(); // LinearPurpur
public static final String ANVIL_EXTENSION = ".mca";
private static final int MAX_CACHE_SIZE = 256;
- public final Long2ObjectLinkedOpenHashMap<RegionFile> regionCache = new Long2ObjectLinkedOpenHashMap();
+ public final Long2ObjectLinkedOpenHashMap<org.purpurmc.purpur.region.AbstractRegionFile> regionCache = new Long2ObjectLinkedOpenHashMap(); // LinearPurpur
private final Path folder;
private final boolean sync;
+ // LinearPurpur start - Per world chunk format
+ public final org.purpurmc.purpur.region.RegionFileFormat format;
+ public final int linearCompression;
+ public final boolean linearCrashOnBrokenSymlink;
+ // LinearPurpur end
private final boolean isChunkData; // Paper
// Paper start - cache regionfile does not exist state
@@ -55,11 +61,16 @@ public class RegionFileStorage implements AutoCloseable {
}
// Paper end - cache regionfile does not exist state
- protected RegionFileStorage(Path directory, boolean dsync) { // Paper - protected constructor
+ protected RegionFileStorage(org.purpurmc.purpur.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync) { // Paper - protected constructor // LinearPurpur
// Paper start - add isChunkData param
- this(directory, dsync, false);
+ this(format, linearCompression, linearCrashOnBrokenSymlink, directory, dsync, false);
}
- RegionFileStorage(Path directory, boolean dsync, boolean isChunkData) {
+ RegionFileStorage(org.purpurmc.purpur.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path directory, boolean dsync, boolean isChunkData) { // LinearPurpur
+ // LinearPurpur start
+ this.format = format;
+ this.linearCompression = linearCompression;
+ this.linearCrashOnBrokenSymlink = linearCrashOnBrokenSymlink;
+ // LinearPurpur end
this.isChunkData = isChunkData;
// Paper end - add isChunkData param
this.folder = directory;
@@ -70,7 +81,7 @@ public class RegionFileStorage implements AutoCloseable {
@Nullable
public static ChunkPos getRegionFileCoordinates(Path file) {
String fileName = file.getFileName().toString();
- if (!fileName.startsWith("r.") || !fileName.endsWith(".mca")) {
+ if (!fileName.startsWith("r.") || !fileName.endsWith(".mca") || !fileName.endsWith(".linear")) { // LinearPurpur
return null;
}
@@ -90,29 +101,43 @@ public class RegionFileStorage implements AutoCloseable {
}
}
- public synchronized RegionFile getRegionFileIfLoaded(ChunkPos chunkcoordintpair) {
+ public synchronized org.purpurmc.purpur.region.AbstractRegionFile getRegionFileIfLoaded(ChunkPos chunkcoordintpair) { // LinearPurpur
return this.regionCache.getAndMoveToFirst(ChunkPos.asLong(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()));
}
public synchronized boolean chunkExists(ChunkPos pos) throws IOException {
- RegionFile regionfile = getRegionFile(pos, true);
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = getRegionFile(pos, true); // LinearPurpur
return regionfile != null ? regionfile.hasChunk(pos) : false;
}
- public synchronized RegionFile getRegionFile(ChunkPos chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit
+ // LinearPurpur start
+ private void guardAgainstBrokenSymlinks(Path path) throws IOException {
+ if (!linearCrashOnBrokenSymlink) return;
+ if (!this.format.equals("LINEAR")) return;
+ if (!java.nio.file.Files.isSymbolicLink(path)) return;
+ Path link = java.nio.file.Files.readSymbolicLink(path);
+ if (!java.nio.file.Files.exists(link) || !java.nio.file.Files.isReadable(link)) {
+ LOGGER.error("Linear region file {} is a broken symbolic link, crashing to prevent data loss", path);
+ net.minecraft.server.MinecraftServer.getServer().halt(false);
+ throw new IOException("Linear region file " + path + " is a broken symbolic link, crashing to prevent data loss");
+ }
+ }
+ // LinearPurpur end
+
+ public synchronized org.purpurmc.purpur.region.AbstractRegionFile getRegionFile(ChunkPos chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit // LinearPurpur
return this.getRegionFile(chunkcoordintpair, existingOnly, false);
}
- public synchronized RegionFile getRegionFile(ChunkPos chunkcoordintpair, boolean existingOnly, boolean lock) throws IOException {
+ public synchronized org.purpurmc.purpur.region.AbstractRegionFile getRegionFile(ChunkPos chunkcoordintpair, boolean existingOnly, boolean lock) throws IOException { // LinearPurpur
// Paper end
long i = ChunkPos.asLong(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()); final long regionPos = i; // Paper - OBFHELPER
- RegionFile regionfile = (RegionFile) this.regionCache.getAndMoveToFirst(i);
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = this.regionCache.getAndMoveToFirst(i); // LinearPurpur
if (regionfile != null) {
// Paper start
if (lock) {
// must be in this synchronized block
- regionfile.fileLock.lock();
+ regionfile.getFileLock().lock(); // LinearPurpur
}
// Paper end
return regionfile;
@@ -123,28 +148,45 @@ public class RegionFileStorage implements AutoCloseable {
}
// Paper end - cache regionfile does not exist state
if (this.regionCache.size() >= io.papermc.paper.configuration.GlobalConfiguration.get().misc.regionFileCacheSize) { // Paper - configurable
- ((RegionFile) this.regionCache.removeLast()).close();
+ this.regionCache.removeLast().close(); // LinearPurpur
}
// Paper - only create directory if not existing only - moved down
Path path = this.folder;
int j = chunkcoordintpair.getRegionX();
- Path path1 = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + ".mca"); // Paper - diff on change
- if (existingOnly && !java.nio.file.Files.exists(path1)) { // Paper start - cache regionfile does not exist state
- this.markNonExisting(regionPos);
- return null; // CraftBukkit
+ // LinearPurpur start - Polyglot
+ Path path1;
+ if (existingOnly) {
+ Path anvil = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + ".mca");
+ Path linear = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + ".linear");
+ guardAgainstBrokenSymlinks(linear);
+ if (java.nio.file.Files.exists(anvil)) path1 = anvil;
+ else if (java.nio.file.Files.exists(linear)) path1 = linear;
+ else {
+ this.markNonExisting(regionPos);
+ return null;
+ }
+ // LinearPurpur end
} else {
+ // LinearPurpur start - Polyglot
+ String extension = switch (this.format) {
+ case LINEAR -> "linear";
+ default -> "mca";
+ };
+ path1 = path.resolve("r." + j + "." + chunkcoordintpair.getRegionZ() + "." + extension);
+ // LinearPurpur end
+ guardAgainstBrokenSymlinks(path1); // LinearPurpur - Crash on broken symlink
this.createRegionFile(regionPos);
}
// Paper end - cache regionfile does not exist state
FileUtil.createDirectoriesSafe(this.folder); // Paper - only create directory if not existing only - moved from above
- RegionFile regionfile1 = new RegionFile(path1, this.folder, this.sync, this.isChunkData); // Paper - allow for chunk regionfiles to regen header
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile1 = org.purpurmc.purpur.region.AbstractRegionFileFactory.getAbstractRegionFile(this.linearCompression, path1, this.folder, this.sync, this.isChunkData); // Paper - allow for chunk regionfiles to regen header // LinearPurpur
this.regionCache.putAndMoveToFirst(i, regionfile1);
// Paper start
if (lock) {
// must be in this synchronized block
- regionfile1.fileLock.lock();
+ regionfile1.getFileLock().lock(); // LinearPurpur
}
// Paper end
return regionfile1;
@@ -172,7 +214,7 @@ public class RegionFileStorage implements AutoCloseable {
}
- private static CompoundTag readOversizedChunk(RegionFile regionfile, ChunkPos chunkCoordinate) throws IOException {
+ private static CompoundTag readOversizedChunk(org.purpurmc.purpur.region.AbstractRegionFile regionfile, ChunkPos chunkCoordinate) throws IOException { // LinearPurpur
synchronized (regionfile) {
try (DataInputStream datainputstream = regionfile.getChunkDataInputStream(chunkCoordinate)) {
CompoundTag oversizedData = regionfile.getOversizedData(chunkCoordinate.x, chunkCoordinate.z);
@@ -219,14 +261,14 @@ public class RegionFileStorage implements AutoCloseable {
@Nullable
public CompoundTag read(ChunkPos pos) throws IOException {
// CraftBukkit start - SPIGOT-5680: There's no good reason to preemptively create files on read, save that for writing
- RegionFile regionfile = this.getRegionFile(pos, true, true); // Paper
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = this.getRegionFile(pos, true, true); // Paper // LinearPurpur
if (regionfile == null) {
return null;
}
// Paper start - Add regionfile parameter
return this.read(pos, regionfile);
}
- public CompoundTag read(ChunkPos pos, RegionFile regionfile) throws IOException {
+ public CompoundTag read(ChunkPos pos, org.purpurmc.purpur.region.AbstractRegionFile regionfile) throws IOException { // LinearPurpur
// We add the regionfile parameter to avoid the potential deadlock (on fileLock) if we went back to obtain a regionfile
// if we decide to re-read
// Paper end
@@ -236,7 +278,7 @@ public class RegionFileStorage implements AutoCloseable {
// Paper start
if (regionfile.isOversized(pos.x, pos.z)) {
- printOversizedLog("Loading Oversized Chunk!", regionfile.regionFile, pos.x, pos.z);
+ printOversizedLog("Loading Oversized Chunk!", regionfile.getRegionFile(), pos.x, pos.z); // LinearPurpur
return readOversizedChunk(regionfile, pos);
}
// Paper end
@@ -250,12 +292,12 @@ public class RegionFileStorage implements AutoCloseable {
if (this.isChunkData) {
ChunkPos chunkPos = ChunkSerializer.getChunkCoordinate(nbttagcompound);
if (!chunkPos.equals(pos)) {
- net.minecraft.server.MinecraftServer.LOGGER.error("Attempting to read chunk data at " + pos + " but got chunk data for " + chunkPos + " instead! Attempting regionfile recalculation for regionfile " + regionfile.regionFile.toAbsolutePath());
+ net.minecraft.server.MinecraftServer.LOGGER.error("Attempting to read chunk data at " + pos + " but got chunk data for " + chunkPos + " instead! Attempting regionfile recalculation for regionfile " + regionfile.getRegionFile().toAbsolutePath()); // LinearPurpur
if (regionfile.recalculateHeader()) {
- regionfile.fileLock.lock(); // otherwise we will unlock twice and only lock once.
+ regionfile.getFileLock().lock(); // otherwise we will unlock twice and only lock once. // LinearPurpur
return this.read(pos, regionfile);
}
- net.minecraft.server.MinecraftServer.LOGGER.error("Can't recalculate regionfile header, regenerating chunk " + pos + " for " + regionfile.regionFile.toAbsolutePath());
+ net.minecraft.server.MinecraftServer.LOGGER.error("Can't recalculate regionfile header, regenerating chunk " + pos + " for " + regionfile.getRegionFile().toAbsolutePath()); // LinearPurpur
return null;
}
}
@@ -289,13 +331,13 @@ public class RegionFileStorage implements AutoCloseable {
return nbttagcompound;
} finally { // Paper start
- regionfile.fileLock.unlock();
+ regionfile.getFileLock().unlock(); // LinearPurpur
} // Paper end
}
public void scanChunk(ChunkPos chunkPos, StreamTagVisitor scanner) throws IOException {
// CraftBukkit start - SPIGOT-5680: There's no good reason to preemptively create files on read, save that for writing
- RegionFile regionfile = this.getRegionFile(chunkPos, true);
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = this.getRegionFile(chunkPos, true); // LinearPurpur
if (regionfile == null) {
return;
}
@@ -325,7 +367,7 @@ public class RegionFileStorage implements AutoCloseable {
}
protected void write(ChunkPos pos, @Nullable CompoundTag nbt) throws IOException {
- RegionFile regionfile = this.getRegionFile(pos, nbt == null, true); // CraftBukkit // Paper // Paper start - rewrite chunk system
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = this.getRegionFile(pos, nbt == null, true); // CraftBukkit // Paper // Paper start - rewrite chunk system // LinearPurpur
if (nbt == null && regionfile == null) {
return;
}
@@ -375,7 +417,7 @@ public class RegionFileStorage implements AutoCloseable {
}
// Paper end
} finally { // Paper start
- regionfile.fileLock.unlock();
+ regionfile.getFileLock().unlock(); // LinearPurpur
} // Paper end
}
@@ -384,7 +426,7 @@ public class RegionFileStorage implements AutoCloseable {
ObjectIterator objectiterator = this.regionCache.values().iterator();
while (objectiterator.hasNext()) {
- RegionFile regionfile = (RegionFile) objectiterator.next();
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = (org.purpurmc.purpur.region.AbstractRegionFile) objectiterator.next(); // LinearPurpur
try {
regionfile.close();
@@ -400,7 +442,7 @@ public class RegionFileStorage implements AutoCloseable {
ObjectIterator objectiterator = this.regionCache.values().iterator();
while (objectiterator.hasNext()) {
- RegionFile regionfile = (RegionFile) objectiterator.next();
+ org.purpurmc.purpur.region.AbstractRegionFile regionfile = (org.purpurmc.purpur.region.AbstractRegionFile) objectiterator.next(); // LinearPurpur
regionfile.flush();
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
index 4aac1979cf57300825a999c876fcf24d3170e68e..79a389b9a139f6838adf32d3b5d4d7ecdd87bcc3 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
@@ -47,8 +47,8 @@ public class SectionStorage<R> extends RegionFileStorage implements AutoCloseabl
public final RegistryAccess registryAccess; // Paper - rewrite chunk system
protected final LevelHeightAccessor levelHeightAccessor;
- public SectionStorage(Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) {
- super(path, dsync); // Paper - remove mojang I/O thread
+ public SectionStorage(org.purpurmc.purpur.region.RegionFileFormat format, int linearCompression, boolean linearCrashOnBrokenSymlink, Path path, Function<Runnable, Codec<R>> codecFactory, Function<Runnable, R> factory, DataFixer dataFixer, DataFixTypes dataFixTypes, boolean dsync, RegistryAccess dynamicRegistryManager, LevelHeightAccessor world) { // LinearPurpur
+ super(format, linearCompression, linearCrashOnBrokenSymlink, path, dsync); // Paper - remove mojang I/O thread // LinearPurpur
this.codec = codecFactory;
this.factory = factory;
this.fixerUpper = dataFixer;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index f6c6cd92e1eff044abefa6ca74477d361f4434ec..ffc77e81999ab80906ff299eef04c5c5abd2ec1b 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -567,7 +567,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
return true;
}
- net.minecraft.world.level.chunk.storage.RegionFile file;
+ org.purpurmc.purpur.region.AbstractRegionFile file; // LinearPurpur
try {
file = world.getChunkSource().chunkMap.regionFileCache.getRegionFile(chunkPos, false);
} catch (java.io.IOException ex) {
diff --git a/src/main/java/org/purpurmc/purpur/region/AbstractRegionFile.java b/src/main/java/org/purpurmc/purpur/region/AbstractRegionFile.java
new file mode 100644
index 0000000000000000000000000000000000000000..e6ab1ca9a699c3f57855f2acc8d08b8a005bce2f
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/region/AbstractRegionFile.java
@@ -0,0 +1,31 @@
+package org.purpurmc.purpur.region;
+
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.chunk.ChunkStatus;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.concurrent.locks.ReentrantLock;
+
+public interface AbstractRegionFile {
+ void flush() throws IOException;
+ void clear(ChunkPos pos) throws IOException;
+ void close() throws IOException;
+ void setStatus(int x, int z, ChunkStatus status);
+ void setOversized(int x, int z, boolean b) throws IOException;
+
+ boolean hasChunk(ChunkPos pos);
+ boolean doesChunkExist(ChunkPos pos) throws Exception;
+ boolean isOversized(int x, int z);
+ boolean recalculateHeader() throws IOException;
+
+ DataOutputStream getChunkDataOutputStream(ChunkPos pos) throws IOException;
+ DataInputStream getChunkDataInputStream(ChunkPos pos) throws IOException;
+ CompoundTag getOversizedData(int x, int z) throws IOException;
+ ChunkStatus getStatusIfCached(int x, int z);
+ ReentrantLock getFileLock();
+ Path getRegionFile();
+}
diff --git a/src/main/java/org/purpurmc/purpur/region/AbstractRegionFileFactory.java b/src/main/java/org/purpurmc/purpur/region/AbstractRegionFileFactory.java
new file mode 100644
index 0000000000000000000000000000000000000000..c88ff6fda185a8489cbefa51a7b09ccba4f11461
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/region/AbstractRegionFileFactory.java
@@ -0,0 +1,29 @@
+package org.purpurmc.purpur.region;
+
+import net.minecraft.world.level.chunk.storage.RegionFile;
+import net.minecraft.world.level.chunk.storage.RegionFileVersion;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+public class AbstractRegionFileFactory {
+ public static AbstractRegionFile getAbstractRegionFile(int linearCompression, Path file, Path directory, boolean dsync) throws IOException {
+ return getAbstractRegionFile(linearCompression, file, directory, RegionFileVersion.VERSION_DEFLATE, dsync);
+ }
+
+ public static AbstractRegionFile getAbstractRegionFile(int linearCompression, Path file, Path directory, boolean dsync, boolean canRecalcHeader) throws IOException {
+ return getAbstractRegionFile(linearCompression, file, directory, RegionFileVersion.VERSION_DEFLATE, dsync, canRecalcHeader);
+ }
+
+ public static AbstractRegionFile getAbstractRegionFile(int linearCompression, Path file, Path directory, RegionFileVersion outputChunkStreamVersion, boolean dsync) throws IOException {
+ return getAbstractRegionFile(linearCompression, file, directory, outputChunkStreamVersion, dsync, false);
+ }
+
+ public static AbstractRegionFile getAbstractRegionFile(int linearCompression, Path file, Path directory, RegionFileVersion outputChunkStreamVersion, boolean dsync, boolean canRecalcHeader) throws IOException {
+ if (file.toString().endsWith(".linear")) {
+ return new LinearRegionFile(file, linearCompression);
+ } else {
+ return new RegionFile(file, directory, outputChunkStreamVersion, dsync, canRecalcHeader);
+ }
+ }
+}
diff --git a/src/main/java/org/purpurmc/purpur/region/LinearRegionFile.java b/src/main/java/org/purpurmc/purpur/region/LinearRegionFile.java
new file mode 100644
index 0000000000000000000000000000000000000000..731a90436cae2e615c228c07f042fa112b95a8d2
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/region/LinearRegionFile.java
@@ -0,0 +1,316 @@
+package org.purpurmc.purpur.region;
+
+import com.github.luben.zstd.ZstdInputStream;
+import com.github.luben.zstd.ZstdOutputStream;
+import com.mojang.logging.LogUtils;
+import net.jpountz.lz4.LZ4Compressor;
+import net.jpountz.lz4.LZ4Factory;
+import net.jpountz.lz4.LZ4FastDecompressor;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.chunk.ChunkStatus;
+import org.slf4j.Logger;
+
+import javax.annotation.Nullable;
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.locks.ReentrantLock;
+
+public class LinearRegionFile implements AbstractRegionFile, AutoCloseable {
+ private static final long SUPERBLOCK = -4323716122432332390L;
+ private static final byte VERSION = 2;
+ private static final int HEADER_SIZE = 32;
+ private static final int FOOTER_SIZE = 8;
+ private static final Logger LOGGER = LogUtils.getLogger();
+ private static final List<Byte> SUPPORTED_VERSIONS = Arrays.asList((byte) 1, (byte) 2);
+ private static final LinearRegionFileFlusher linearRegionFileFlusher = new LinearRegionFileFlusher();
+
+ private final byte[][] buffer = new byte[1024][];
+ private final int[] bufferUncompressedSize = new int[1024];
+
+ private final int[] chunkTimestamps = new int[1024];
+ private final ChunkStatus[] statuses = new ChunkStatus[1024];
+
+ private final LZ4Compressor compressor;
+ private final LZ4FastDecompressor decompressor;
+
+ public final ReentrantLock fileLock = new ReentrantLock(true);
+ private final int compressionLevel;
+
+ private AtomicBoolean markedToSave = new AtomicBoolean(false);
+ public boolean closed = false;
+ public Path path;
+
+
+ public LinearRegionFile(Path file, int compression) throws IOException {
+ this.path = file;
+ this.compressionLevel = compression;
+ this.compressor = LZ4Factory.fastestInstance().fastCompressor();
+ this.decompressor = LZ4Factory.fastestInstance().fastDecompressor();
+
+ File regionFile = new File(this.path.toString());
+
+ Arrays.fill(this.bufferUncompressedSize, 0);
+
+ if (!regionFile.canRead()) return;
+
+ try (FileInputStream fileStream = new FileInputStream(regionFile);
+ DataInputStream rawDataStream = new DataInputStream(fileStream)) {
+
+ long superBlock = rawDataStream.readLong();
+ if (superBlock != SUPERBLOCK)
+ throw new RuntimeException("Invalid superblock: " + superBlock + " in " + file);
+
+ byte version = rawDataStream.readByte();
+ if (!SUPPORTED_VERSIONS.contains(version))
+ throw new RuntimeException("Invalid version: " + version + " in " + file);
+
+ // Skip newestTimestamp (Long) + Compression level (Byte) + Chunk count (Short): Unused.
+ rawDataStream.skipBytes(11);
+
+ int dataCount = rawDataStream.readInt();
+ long fileLength = file.toFile().length();
+ if (fileLength != HEADER_SIZE + dataCount + FOOTER_SIZE)
+ throw new IOException("Invalid file length: " + this.path + " " + fileLength + " " + (HEADER_SIZE + dataCount + FOOTER_SIZE));
+
+ rawDataStream.skipBytes(8); // Skip data hash (Long): Unused.
+
+ byte[] rawCompressed = new byte[dataCount];
+ rawDataStream.readFully(rawCompressed, 0, dataCount);
+
+ superBlock = rawDataStream.readLong();
+ if (superBlock != SUPERBLOCK)
+ throw new IOException("Footer superblock invalid " + this.path);
+
+ try (DataInputStream dataStream = new DataInputStream(new ZstdInputStream(new ByteArrayInputStream(rawCompressed)))) {
+
+ int[] starts = new int[1024];
+ for (int i = 0; i < 1024; i++) {
+ starts[i] = dataStream.readInt();
+ dataStream.skipBytes(4); // Skip timestamps (Int): Unused.
+ }
+
+ for (int i = 0; i < 1024; i++) {
+ if (starts[i] > 0) {
+ int size = starts[i];
+ byte[] b = new byte[size];
+ dataStream.readFully(b, 0, size);
+
+ int maxCompressedLength = this.compressor.maxCompressedLength(size);
+ byte[] compressed = new byte[maxCompressedLength];
+ int compressedLength = this.compressor.compress(b, 0, size, compressed, 0, maxCompressedLength);
+ b = new byte[compressedLength];
+ System.arraycopy(compressed, 0, b, 0, compressedLength);
+
+ this.buffer[i] = b;
+ this.bufferUncompressedSize[i] = size;
+ }
+ }
+ }
+ }
+ }
+
+ public Path getRegionFile() {
+ return this.path;
+ }
+
+ public ReentrantLock getFileLock() {
+ return this.fileLock;
+ }
+
+ public void flush() throws IOException {
+ if (isMarkedToSave()) flushWrapper(); // sync
+ }
+
+ private void markToSave() {
+ linearRegionFileFlusher.scheduleSave(this);
+ markedToSave.set(true);
+ }
+
+ public boolean isMarkedToSave() {
+ return markedToSave.getAndSet(false);
+ }
+
+ public void flushWrapper() {
+ try {
+ save();
+ } catch (IOException e) {
+ LOGGER.error("Failed to flush region file " + path.toAbsolutePath(), e);
+ }
+ }
+
+ public boolean doesChunkExist(ChunkPos pos) throws Exception {
+ throw new Exception("doesChunkExist is a stub");
+ }
+
+ private synchronized void save() throws IOException {
+ long timestamp = getTimestamp();
+ short chunkCount = 0;
+
+ File tempFile = new File(path.toString() + ".tmp");
+
+ try (FileOutputStream fileStream = new FileOutputStream(tempFile);
+ ByteArrayOutputStream zstdByteArray = new ByteArrayOutputStream();
+ ZstdOutputStream zstdStream = new ZstdOutputStream(zstdByteArray, this.compressionLevel);
+ DataOutputStream zstdDataStream = new DataOutputStream(zstdStream);
+ DataOutputStream dataStream = new DataOutputStream(fileStream)) {
+
+ dataStream.writeLong(SUPERBLOCK);
+ dataStream.writeByte(VERSION);
+ dataStream.writeLong(timestamp);
+ dataStream.writeByte(this.compressionLevel);
+
+ ArrayList<byte[]> byteBuffers = new ArrayList<>();
+ for (int i = 0; i < 1024; i++) {
+ if (this.bufferUncompressedSize[i] != 0) {
+ chunkCount += 1;
+ byte[] content = new byte[bufferUncompressedSize[i]];
+ this.decompressor.decompress(buffer[i], 0, content, 0, bufferUncompressedSize[i]);
+
+ byteBuffers.add(content);
+ } else byteBuffers.add(null);
+ }
+ for (int i = 0; i < 1024; i++) {
+ zstdDataStream.writeInt(this.bufferUncompressedSize[i]); // Write uncompressed size
+ zstdDataStream.writeInt(this.chunkTimestamps[i]); // Write timestamp
+ }
+ for (int i = 0; i < 1024; i++) {
+ if (byteBuffers.get(i) != null)
+ zstdDataStream.write(byteBuffers.get(i), 0, byteBuffers.get(i).length);
+ }
+ zstdDataStream.close();
+
+ dataStream.writeShort(chunkCount);
+
+ byte[] compressed = zstdByteArray.toByteArray();
+
+ dataStream.writeInt(compressed.length);
+ dataStream.writeLong(0);
+
+ dataStream.write(compressed, 0, compressed.length);
+ dataStream.writeLong(SUPERBLOCK);
+
+ dataStream.flush();
+ fileStream.getFD().sync();
+ fileStream.getChannel().force(true); // Ensure atomicity on Btrfs
+ }
+ Files.move(tempFile.toPath(), this.path, StandardCopyOption.REPLACE_EXISTING);
+ }
+
+
+ public void setStatus(int x, int z, ChunkStatus status) {
+ this.statuses[getChunkIndex(x, z)] = status;
+ }
+
+ public synchronized void write(ChunkPos pos, ByteBuffer buffer) {
+ try {
+ byte[] b = toByteArray(new ByteArrayInputStream(buffer.array()));
+ int uncompressedSize = b.length;
+
+ int maxCompressedLength = this.compressor.maxCompressedLength(b.length);
+ byte[] compressed = new byte[maxCompressedLength];
+ int compressedLength = this.compressor.compress(b, 0, b.length, compressed, 0, maxCompressedLength);
+ b = new byte[compressedLength];
+ System.arraycopy(compressed, 0, b, 0, compressedLength);
+
+ int index = getChunkIndex(pos.x, pos.z);
+ this.buffer[index] = b;
+ this.chunkTimestamps[index] = getTimestamp();
+ this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] = uncompressedSize;
+ } catch (IOException e) {
+ LOGGER.error("Chunk write IOException " + e + " " + this.path);
+ }
+ markToSave();
+ }
+
+ public DataOutputStream getChunkDataOutputStream(ChunkPos pos) {
+ return new DataOutputStream(new BufferedOutputStream(new ChunkBuffer(pos)));
+ }
+
+ private class ChunkBuffer extends ByteArrayOutputStream {
+ private final ChunkPos pos;
+
+ public ChunkBuffer(ChunkPos chunkcoordintpair) {
+ super();
+ this.pos = chunkcoordintpair;
+ }
+
+ public void close() throws IOException {
+ ByteBuffer bytebuffer = ByteBuffer.wrap(this.buf, 0, this.count);
+ LinearRegionFile.this.write(this.pos, bytebuffer);
+ }
+ }
+
+ private byte[] toByteArray(InputStream in) throws IOException {
+ ByteArrayOutputStream out = new ByteArrayOutputStream();
+ byte[] tempBuffer = new byte[4096];
+
+ int length;
+ while ((length = in.read(tempBuffer)) >= 0) {
+ out.write(tempBuffer, 0, length);
+ }
+
+ return out.toByteArray();
+ }
+
+ @Nullable
+ public synchronized DataInputStream getChunkDataInputStream(ChunkPos pos) {
+ if(this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] != 0) {
+ byte[] content = new byte[bufferUncompressedSize[getChunkIndex(pos.x, pos.z)]];
+ this.decompressor.decompress(this.buffer[getChunkIndex(pos.x, pos.z)], 0, content, 0, bufferUncompressedSize[getChunkIndex(pos.x, pos.z)]);
+ return new DataInputStream(new ByteArrayInputStream(content));
+ }
+ return null;
+ }
+
+ public ChunkStatus getStatusIfCached(int x, int z) {
+ return this.statuses[getChunkIndex(x, z)];
+ }
+
+ public void clear(ChunkPos pos) {
+ int i = getChunkIndex(pos.x, pos.z);
+ this.buffer[i] = null;
+ this.bufferUncompressedSize[i] = 0;
+ this.chunkTimestamps[i] = getTimestamp();
+ markToSave();
+ }
+
+ public boolean hasChunk(ChunkPos pos) {
+ return this.bufferUncompressedSize[getChunkIndex(pos.x, pos.z)] > 0;
+ }
+
+ public void close() throws IOException {
+ if (closed) return;
+ closed = true;
+ flush(); // sync
+ }
+
+ private static int getChunkIndex(int x, int z) {
+ return (x & 31) + ((z & 31) << 5);
+ }
+
+ private static int getTimestamp() {
+ return (int) (System.currentTimeMillis() / 1000L);
+ }
+
+ public boolean recalculateHeader() {
+ return false;
+ }
+
+ public void setOversized(int x, int z, boolean something) {}
+
+ public CompoundTag getOversizedData(int x, int z) throws IOException {
+ throw new IOException("getOversizedData is a stub " + this.path);
+ }
+
+ public boolean isOversized(int x, int z) {
+ return false;
+ }
+}
diff --git a/src/main/java/org/purpurmc/purpur/region/LinearRegionFileFlusher.java b/src/main/java/org/purpurmc/purpur/region/LinearRegionFileFlusher.java
new file mode 100644
index 0000000000000000000000000000000000000000..60f8ed586676609b9be7626eebf865aaaee92ac2
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/region/LinearRegionFileFlusher.java
@@ -0,0 +1,45 @@
+package org.purpurmc.purpur.region;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import java.util.Queue;
+import java.util.concurrent.*;
+import org.purpurmc.purpur.PurpurConfig;
+import org.bukkit.Bukkit;
+
+public class LinearRegionFileFlusher {
+ private final Queue<LinearRegionFile> savingQueue = new LinkedBlockingQueue<>();
+ private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(
+ new ThreadFactoryBuilder()
+ .setNameFormat("linear-flush-scheduler")
+ .build()
+ );
+ private final ExecutorService executor = Executors.newFixedThreadPool(
+ PurpurConfig.linearFlushThreads,
+ new ThreadFactoryBuilder()
+ .setNameFormat("linear-flusher-%d")
+ .build()
+ );
+
+ public LinearRegionFileFlusher() {
+ Bukkit.getLogger().info("Using " + PurpurConfig.linearFlushThreads + " threads for linear region flushing.");
+ scheduler.scheduleAtFixedRate(this::pollAndFlush, 0L, PurpurConfig.linearFlushFrequency, TimeUnit.SECONDS);
+ }
+
+ public void scheduleSave(LinearRegionFile regionFile) {
+ if (savingQueue.contains(regionFile)) return;
+ savingQueue.add(regionFile);
+ }
+
+ private void pollAndFlush() {
+ while (!savingQueue.isEmpty()) {
+ LinearRegionFile regionFile = savingQueue.poll();
+ if (!regionFile.closed && regionFile.isMarkedToSave())
+ executor.execute(regionFile::flushWrapper);
+ }
+ }
+
+ public void shutdown() {
+ executor.shutdown();
+ scheduler.shutdown();
+ }
+}
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