Leaf/leaf-archived-patches/unapplied/server/minecraft-patches/features/0033-Linear-region-file-format.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: HaHaWTH <102713261+HaHaWTH@users.noreply.github.com>
Date: Sun, 30 Jun 2024 00:35:19 +0800
Subject: [PATCH] Linear region file format

Original license: MIT
Original project: https://github.com/LuminolMC/Luminol

Linear is a region file format that uses ZSTD compression instead of
ZLIB.
This format saves about 50% of disk space.
Documentation: https://github.com/xymb-endcrystalme/LinearRegionFileFormatTools

diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java b/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
index a814512fcfb85312474ae2c2c21443843bf57831..f80c75c561313625b694b433692aa429b8f8fde9 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/io/ChunkSystemRegionFileStorage.java
@@ -8,9 +8,9 @@ public interface ChunkSystemRegionFileStorage {
 
     public boolean moonrise$doesRegionFileNotExistNoIO(final int chunkX, final int chunkZ);
 
-    public RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ);
+    public org.stupidcraft.linearpaper.region.IRegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ); // LinearPaper
 
-    public RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException;
+    public org.stupidcraft.linearpaper.region.IRegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException; // LinearPaper
 
     public MoonriseRegionFileIO.RegionDataController.WriteData moonrise$startWrite(
             final int chunkX, final int chunkZ, final CompoundTag compound
diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java b/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
index 98fbc5c8044bd945d64569f13412a6e7e49a4e7f..60ed8cff397c964323fbda203ebfab3c7c9a873b 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/io/MoonriseRegionFileIO.java
@@ -1260,7 +1260,7 @@ public final class MoonriseRegionFileIO {
                 this.regionDataController.finishWrite(this.chunkX, this.chunkZ, writeData);
                 // Paper start - flush regionfiles on save
                 if (this.world.paperConfig().chunks.flushRegionsOnSave) {
-                    final RegionFile regionFile = this.regionDataController.getCache().moonrise$getRegionFileIfLoaded(this.chunkX, this.chunkZ);
+                    final org.stupidcraft.linearpaper.region.IRegionFile regionFile = this.regionDataController.getCache().moonrise$getRegionFileIfLoaded(this.chunkX, this.chunkZ); // LinearPaper
                     if (regionFile != null) {
                         regionFile.flush();
                     } // else: evicted from cache, which should have called flush
@@ -1470,7 +1470,7 @@ public final class MoonriseRegionFileIO {
 
         public static interface IORunnable {
 
-            public void run(final RegionFile regionFile) throws IOException;
+            public void run(final org.stupidcraft.linearpaper.region.IRegionFile regionFile) throws IOException; // LinearPaper
 
         }
     }
diff --git a/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java b/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
index 51c126735ace8fdde89ad97b5cab62f244212db0..4046f0aaa153e00277bf14f009fbe14aa8859fec 100644
--- a/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
+++ b/ca/spottedleaf/moonrise/patches/chunk_system/storage/ChunkSystemChunkBuffer.java
@@ -8,5 +8,5 @@ public interface ChunkSystemChunkBuffer {
 
     public void moonrise$setWriteOnClose(final boolean value);
 
-    public void moonrise$write(final RegionFile regionFile) throws IOException;
+    public void moonrise$write(final org.stupidcraft.linearpaper.region.IRegionFile regionFile) throws IOException; // LinearPaper
 }
diff --git a/net/minecraft/server/MinecraftServer.java b/net/minecraft/server/MinecraftServer.java
index 0e6e71030e3fd1335fff796b861524a48cb0a507..30747b30596208bc02dfb4a6c31f8afb5c1aba8e 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -935,10 +935,10 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         // CraftBukkit end
         if (flush) {
             for (ServerLevel serverLevel2 : this.getAllLevels()) {
-                LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", serverLevel2.getChunkSource().chunkMap.getStorageName());
+                LOGGER.info("ThreadedChunkStorage ({}): All chunks are saved", serverLevel2.getChunkSource().chunkMap.getStorageName()); // LinearPaper
             }
 
-            LOGGER.info("ThreadedAnvilChunkStorage: All dimensions are saved");
+            LOGGER.info("ThreadedChunkStorage: All dimensions are saved"); // LinearPaper
         }
 
         return flag;
diff --git a/net/minecraft/util/worldupdate/WorldUpgrader.java b/net/minecraft/util/worldupdate/WorldUpgrader.java
index e0bcda2ddea0d6633445a7440fbf0d18e50a7653..17cdff80683de3fc166cc38d27a9e80dd1fc8272 100644
--- a/net/minecraft/util/worldupdate/WorldUpgrader.java
+++ b/net/minecraft/util/worldupdate/WorldUpgrader.java
@@ -72,7 +72,7 @@ public class WorldUpgrader implements AutoCloseable {
     volatile int skipped;
     final Reference2FloatMap<ResourceKey<Level>> progressMap = Reference2FloatMaps.synchronize(new Reference2FloatOpenHashMap<>());
     volatile Component status = Component.translatable("optimizeWorld.stage.counting");
-    static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.mca$");
+    static final Pattern REGEX = Pattern.compile("^r\\.(-?[0-9]+)\\.(-?[0-9]+)\\.(linear | mca)$"); // LinearPaper
     final DimensionDataStorage overworldDataStorage;
 
     public WorldUpgrader(
@@ -261,7 +261,7 @@ public class WorldUpgrader implements AutoCloseable {
         }
 
         private static List<WorldUpgrader.FileToUpgrade> getAllChunkPositions(RegionStorageInfo regionStorageInfo, Path path) {
-            File[] files = path.toFile().listFiles((directory, filename) -> filename.endsWith(".mca"));
+            File[] files = path.toFile().listFiles((directory, filename) -> filename.endsWith(".linear") || filename.endsWith(".mca")); // LinearPaper
             if (files == null) {
                 return List.of();
             } else {
@@ -274,7 +274,7 @@ public class WorldUpgrader implements AutoCloseable {
                         int i1 = Integer.parseInt(matcher.group(2)) << 5;
                         List<ChunkPos> list1 = Lists.newArrayList();
 
-                        try (RegionFile regionFile = new RegionFile(regionStorageInfo, file.toPath(), path, true)) {
+                        try (org.stupidcraft.linearpaper.region.IRegionFile regionFile = org.stupidcraft.linearpaper.region.IRegionFileFactory.getAbstractRegionFile(regionStorageInfo, file.toPath(), path, true)) { // LinearPaper
                             for (int i2 = 0; i2 < 32; i2++) {
                                 for (int i3 = 0; i3 < 32; i3++) {
                                     ChunkPos chunkPos = new ChunkPos(i2 + i, i3 + i1);
@@ -322,7 +322,7 @@ public class WorldUpgrader implements AutoCloseable {
 
         protected abstract boolean tryProcessOnePosition(T chunkStorage, ChunkPos chunkPos, ResourceKey<Level> dimension);
 
-        private void onFileFinished(RegionFile regionFile) {
+        private void onFileFinished(org.stupidcraft.linearpaper.region.IRegionFile regionFile) { // LinearPaper
             if (WorldUpgrader.this.recreateRegionFiles) {
                 if (this.previousWriteFuture != null) {
                     this.previousWriteFuture.join();
@@ -424,7 +424,7 @@ public class WorldUpgrader implements AutoCloseable {
         }
     }
 
-    record FileToUpgrade(RegionFile file, List<ChunkPos> chunksToUpgrade) {
+    record FileToUpgrade(org.stupidcraft.linearpaper.region.IRegionFile file, List<ChunkPos> chunksToUpgrade) { // LinearPaper
     }
 
     class PoiUpgrader extends WorldUpgrader.SimpleRegionStorageUpgrader {
diff --git a/net/minecraft/world/level/chunk/storage/RegionFile.java b/net/minecraft/world/level/chunk/storage/RegionFile.java
index c72494e757a9dc50e053dbc873f7b30e83d5cb8c..8241165e5bbab0966647e11320693be245f5d9aa 100644
--- a/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -22,7 +22,7 @@ import net.minecraft.util.profiling.jfr.JvmProfiler;
 import net.minecraft.world.level.ChunkPos;
 import org.slf4j.Logger;
 
-public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patches.chunk_system.storage.ChunkSystemRegionFile { // Paper - rewrite chunk system
+public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patches.chunk_system.storage.ChunkSystemRegionFile, org.stupidcraft.linearpaper.region.IRegionFile { // Paper - rewrite chunk system // LinearPaper
     private static final Logger LOGGER = LogUtils.getLogger();
     public static final int MAX_CHUNK_SIZE = 500 * 1024 * 1024; // Paper - don't write garbage data to disk if writing serialization fails
     private static final int SECTOR_BYTES = 4096;
@@ -904,7 +904,7 @@ public class RegionFile implements AutoCloseable, ca.spottedleaf.moonrise.patche
         }
 
         @Override
-        public final void moonrise$write(final RegionFile regionFile) throws IOException {
+        public final void moonrise$write(final org.stupidcraft.linearpaper.region.IRegionFile regionFile) throws IOException { // LinearPaper
             regionFile.write(this.pos, ByteBuffer.wrap(this.buf, 0, this.count));
         }
         // Paper end - rewrite chunk system
diff --git a/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
index 320e9e24711d2a326313b3a202c7ef987f71f229..5d278003313fae60a5948eab207b5257cd8bb4bf 100644
--- a/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+++ b/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
@@ -18,7 +18,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     private static final org.slf4j.Logger LOGGER = com.mojang.logging.LogUtils.getLogger(); // Paper
     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.stupidcraft.linearpaper.region.IRegionFile> regionCache = new Long2ObjectLinkedOpenHashMap<>(); // LinearPaper
     private final RegionStorageInfo info;
     private final Path folder;
     private final boolean sync;
@@ -33,7 +33,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     @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")) { // LinearPaper
             return null;
         }
 
@@ -58,6 +58,12 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     private static final int MAX_NON_EXISTING_CACHE = 1024 * 4;
     private final it.unimi.dsi.fastutil.longs.LongLinkedOpenHashSet nonExistingRegionFiles = new it.unimi.dsi.fastutil.longs.LongLinkedOpenHashSet();
     private static String getRegionFileName(final int chunkX, final int chunkZ) {
+        // LinearPaper start
+        if (org.dreeam.leaf.config.modules.misc.RegionFormatConfig.regionFormatType == org.stupidcraft.linearpaper.region.EnumRegionFileExtension.LINEAR) {
+            return "r." + (chunkX >> REGION_SHIFT) + "." + (chunkZ >> REGION_SHIFT) + ".linear";
+        }
+        // LinearPaper end
+
         return "r." + (chunkX >> REGION_SHIFT) + "." + (chunkZ >> REGION_SHIFT) + ".mca";
     }
 
@@ -93,15 +99,15 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     }
 
     @Override
-    public synchronized final RegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ) {
+    public synchronized final org.stupidcraft.linearpaper.region.IRegionFile moonrise$getRegionFileIfLoaded(final int chunkX, final int chunkZ) { // LinearPaper
         return this.regionCache.getAndMoveToFirst(ChunkPos.asLong(chunkX >> REGION_SHIFT, chunkZ >> REGION_SHIFT));
     }
 
     @Override
-    public synchronized final RegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException {
+    public synchronized final org.stupidcraft.linearpaper.region.IRegionFile moonrise$getRegionFileIfExists(final int chunkX, final int chunkZ) throws IOException { // LinearPaper
         final long key = ChunkPos.asLong(chunkX >> REGION_SHIFT, chunkZ >> REGION_SHIFT);
 
-        RegionFile ret = this.regionCache.getAndMoveToFirst(key);
+        org.stupidcraft.linearpaper.region.IRegionFile ret = this.regionCache.getAndMoveToFirst(key); // LinearPaper
         if (ret != null) {
             return ret;
         }
@@ -125,7 +131,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
         FileUtil.createDirectoriesSafe(this.folder);
 
-        ret = new RegionFile(this.info, regionPath, this.folder, this.sync);
+        ret = org.stupidcraft.linearpaper.region.IRegionFileFactory.getAbstractRegionFile(this.info, regionPath, this.folder, this.sync); // LinearPaper
 
         this.regionCache.putAndMoveToFirst(key, ret);
 
@@ -144,11 +150,11 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         }
 
         final ChunkPos pos = new ChunkPos(chunkX, chunkZ);
-        final RegionFile regionFile = this.getRegionFile(pos);
+        final org.stupidcraft.linearpaper.region.IRegionFile regionFile = this.getRegionFile(pos); // LinearPaper
 
         // note: not required to keep regionfile loaded after this call, as the write param takes a regionfile as input
         // (and, the regionfile parameter is unused for writing until the write call)
-        final ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.WriteData writeData = ((ca.spottedleaf.moonrise.patches.chunk_system.storage.ChunkSystemRegionFile)regionFile).moonrise$startWrite(compound, pos);
+        final ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.WriteData writeData = regionFile.moonrise$startWrite(compound, pos); // LinearPaper
 
         try { // Paper - implement RegionFileSizeException
         try {
@@ -178,7 +184,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     ) throws IOException {
         final ChunkPos pos = new ChunkPos(chunkX, chunkZ);
         if (writeData.result() == ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.WriteData.WriteResult.DELETE) {
-            final RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);
+            final org.stupidcraft.linearpaper.region.IRegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ); // LinearPaper
             if (regionFile != null) {
                 regionFile.clear(pos);
             } // else: didn't exist
@@ -193,7 +199,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     public final ca.spottedleaf.moonrise.patches.chunk_system.io.MoonriseRegionFileIO.RegionDataController.ReadData moonrise$readData(
         final int chunkX, final int chunkZ
     ) throws IOException {
-        final RegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ);
+        final org.stupidcraft.linearpaper.region.IRegionFile regionFile = this.moonrise$getRegionFileIfExists(chunkX, chunkZ); // LinearPaper
 
         final DataInputStream input = regionFile == null ? null : regionFile.getChunkDataInputStream(new ChunkPos(chunkX, chunkZ));
 
@@ -237,7 +243,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     }
     // Paper end - rewrite chunk system
     // Paper start - rewrite chunk system
-    public RegionFile getRegionFile(ChunkPos chunkcoordintpair) throws IOException {
+    public org.stupidcraft.linearpaper.region.IRegionFile getRegionFile(ChunkPos chunkcoordintpair) throws IOException { // LinearPaper
         return this.getRegionFile(chunkcoordintpair, false);
     }
     // Paper end - rewrite chunk system
@@ -249,7 +255,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         this.isChunkData = isChunkDataFolder(this.folder); // Paper - recalculate region file headers
     }
 
-    @org.jetbrains.annotations.Contract("_, false -> !null") @Nullable private RegionFile getRegionFile(ChunkPos chunkPos, boolean existingOnly) throws IOException { // CraftBukkit
+    @org.jetbrains.annotations.Contract("_, false -> !null") @Nullable private org.stupidcraft.linearpaper.region.IRegionFile getRegionFile(ChunkPos chunkPos, boolean existingOnly) throws IOException { // CraftBukkit // LinearPaper
         // Paper start - rewrite chunk system
         if (existingOnly) {
             return this.moonrise$getRegionFileIfExists(chunkPos.x, chunkPos.z);
@@ -257,7 +263,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         synchronized (this) {
             final long key = ChunkPos.asLong(chunkPos.x >> REGION_SHIFT, chunkPos.z >> REGION_SHIFT);
 
-            RegionFile ret = this.regionCache.getAndMoveToFirst(key);
+            org.stupidcraft.linearpaper.region.IRegionFile ret = this.regionCache.getAndMoveToFirst(key); // LinearPaper
             if (ret != null) {
                 return ret;
             }
@@ -266,13 +272,13 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
                 this.regionCache.removeLast().close();
             }
 
-            final Path regionPath = this.folder.resolve(getRegionFileName(chunkPos.x, chunkPos.z));
+            final Path regionPath = this.folder.resolve(getRegionFileName(chunkPos.x, chunkPos.z)); // LinearPaper
 
             this.createRegionFile(key);
 
             FileUtil.createDirectoriesSafe(this.folder);
 
-            ret = new RegionFile(this.info, regionPath, this.folder, this.sync);
+            ret = org.stupidcraft.linearpaper.region.IRegionFileFactory.getAbstractRegionFile(this.info, regionPath, this.folder, this.sync); // LinearPaper
 
             this.regionCache.putAndMoveToFirst(key, ret);
 
@@ -292,7 +298,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         // Gale end - branding changes
     }
 
-    private static CompoundTag readOversizedChunk(RegionFile regionfile, ChunkPos chunkCoordinate) throws IOException {
+    private static CompoundTag readOversizedChunk(org.stupidcraft.linearpaper.region.IRegionFile regionfile, ChunkPos chunkCoordinate) throws IOException { // LinearPaper
         synchronized (regionfile) {
             try (DataInputStream datainputstream = regionfile.getChunkDataInputStream(chunkCoordinate)) {
                 CompoundTag oversizedData = regionfile.getOversizedData(chunkCoordinate.x, chunkCoordinate.z);
@@ -327,7 +333,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     @Nullable
     public CompoundTag read(ChunkPos chunkPos) 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.stupidcraft.linearpaper.region.IRegionFile regionFile = this.getRegionFile(chunkPos, true); // LinearPaper
         if (regionFile == null) {
             return null;
         }
@@ -366,7 +372,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
 
     public void scanChunk(ChunkPos chunkPos, StreamTagVisitor visitor) 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.stupidcraft.linearpaper.region.IRegionFile regionFile = this.getRegionFile(chunkPos, true); // LinearPaper
         if (regionFile == null) {
             return;
         }
@@ -380,7 +386,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
     }
 
     public void write(ChunkPos chunkPos, @Nullable CompoundTag chunkData) throws IOException { // Paper - rewrite chunk system - public
-        RegionFile regionFile = this.getRegionFile(chunkPos, chunkData == null); // CraftBukkit // Paper - rewrite chunk system
+        org.stupidcraft.linearpaper.region.IRegionFile regionFile = this.getRegionFile(chunkPos, chunkData == null); // CraftBukkit // Paper - rewrite chunk system // LinearPaper
         // Paper start - rewrite chunk system
         if (regionFile == null) {
             // if the RegionFile doesn't exist, no point in deleting from it
@@ -410,7 +416,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         // Paper start - rewrite chunk system
         synchronized (this) {
             final ExceptionCollector<IOException> exceptionCollector = new ExceptionCollector<>();
-            for (final RegionFile regionFile : this.regionCache.values()) {
+            for (final org.stupidcraft.linearpaper.region.IRegionFile regionFile : this.regionCache.values()) { // LinearPaper
                 try {
                     regionFile.close();
                 } catch (final IOException ex) {
@@ -426,7 +432,7 @@ public class RegionFileStorage implements AutoCloseable, ca.spottedleaf.moonrise
         // Paper start - rewrite chunk system
         synchronized (this) {
             final ExceptionCollector<IOException> exceptionCollector = new ExceptionCollector<>();
-            for (final RegionFile regionFile : this.regionCache.values()) {
+            for (final org.stupidcraft.linearpaper.region.IRegionFile regionFile : this.regionCache.values()) { // LinearPaper
                 try {
                     regionFile.flush();
                 } catch (final IOException ex) {