Class RegionFile

Method Details

• getPath

  public Path getPath()

• getExternalChunkPath

  private Path getExternalChunkPath(ChunkPos chunkPos)

  Gets the path to store a chunk that can not be stored within the region file because it's larger than 1 MiB.

• getChunkDataInputStream

  @Nullable public DataInputStream getChunkDataInputStream(ChunkPos chunkPos) throws IOException

  Throws:

  IOException

• getTimestamp

  private static int getTimestamp()

• isExternalStreamChunk

  private static boolean isExternalStreamChunk(byte versionByte)

• getExternalChunkVersion

  private static byte getExternalChunkVersion(byte versionByte)

• createChunkInputStream

  @Nullable private DataInputStream createChunkInputStream(ChunkPos chunkPos, byte versionByte, InputStream inputStream) throws IOException

  Throws:

  IOException

• createExternalChunkInputStream

  @Nullable private DataInputStream createExternalChunkInputStream(ChunkPos chunkPos, byte versionByte) throws IOException

  Throws:

  IOException

• createStream

  private static ByteArrayInputStream createStream(ByteBuffer sourceBuffer, int length)

• packSectorOffset

  private int packSectorOffset(int sectorOffset, int sectorCount)

  Packs the offset in 4 KiB sectors from the region file start and the amount of 4 KiB sectors used to store a chunk into one int.

• getNumSectors

  private static int getNumSectors(int packedSectorOffset)

  Gets the amount of 4 KiB sectors used to store a chunk.

• getSectorNumber

  private static int getSectorNumber(int packedSectorOffset)

  Gets the offset in 4 KiB sectors from the start of the region file, where the data for a chunk starts.

• sizeToSectors

  private static int sizeToSectors(int size)

  Gets the amount of sectors required to store chunk data of a certain size in bytes.

• doesChunkExist

  public boolean doesChunkExist(ChunkPos chunkPos)

• getChunkDataOutputStream

  public DataOutputStream getChunkDataOutputStream(ChunkPos chunkPos) throws IOException

  Creates a new InputStream for a chunk stored in a separate file.

  Throws:

  IOException

• flush

  public void flush() throws IOException

  Throws:

  IOException

• clear

  public void clear(ChunkPos chunkPos) throws IOException

  Throws:

  IOException

• write

  protected void write(ChunkPos chunkPos, ByteBuffer chunkData) throws IOException

  Throws:

  IOException

• createExternalStub

  private ByteBuffer createExternalStub()

• writeToExternalFile

  private RegionFile.CommitOp writeToExternalFile(Path externalChunkFile, ByteBuffer chunkData) throws IOException

  Writes a chunk to a separate file with only that chunk. This is used for chunks larger than 1 MiB

  Throws:

  IOException

• writeHeader

  private void writeHeader() throws IOException

  Throws:

  IOException

• getOffset

  private int getOffset(ChunkPos chunkPos)

• hasChunk

  public boolean hasChunk(ChunkPos chunkPos)

• getOffsetIndex

  private static int getOffsetIndex(ChunkPos chunkPos)

  Gets the offset within the region file where the chunk metadata for a chunk can be found.

• close

  public void close() throws IOException

  Specified by:

  close in interface AutoCloseable

  Throws:

  IOException

• padToFullSector

  private void padToFullSector() throws IOException

  Throws:

  IOException