org.gridgain.grid.kernal.ggfs.hadoop

Class GridGgfsHadoopInputStream

java.lang.Object

java.io.InputStream

org.gridgain.grid.kernal.ggfs.hadoop.GridGgfsHadoopInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.fs.PositionedReadable, org.apache.hadoop.fs.Seekable, GridGgfsHadoopStreamEventListener

public final class GridGgfsHadoopInputStream
extends InputStream
implements org.apache.hadoop.fs.Seekable, org.apache.hadoop.fs.PositionedReadable, GridGgfsHadoopStreamEventListener

GGFS input stream wrapper for hadoop interfaces.

Constructor Summary

Constructors

Constructor and Description
GridGgfsHadoopInputStream(GridGgfsHadoopStreamDelegate delegate, long limit, int bufSize, org.apache.commons.logging.Log log, GridGgfsHadoopLogger clientLog, long logStreamId) Creates input stream.

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
void	close()
long	getPos()
void	mark(int readLimit)
boolean	markSupported()
void	onClose() Callback invoked when the stream is being closed.
void	onError(String errMsg) Callback invoked when remote error occurs.
int	read()
int	read(byte[] b, int off, int len)
int	read(long position, byte[] buf, int off, int len)
void	readFully(long position, byte[] buf)
void	readFully(long position, byte[] buf, int off, int len)
void	reset()
void	seek(long pos)
boolean	seekToNewSource(long targetPos)
long	skip(long n)

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GridGgfsHadoopInputStream

public GridGgfsHadoopInputStream(GridGgfsHadoopStreamDelegate delegate,
                         long limit,
                         int bufSize,
                         org.apache.commons.logging.Log log,
                         GridGgfsHadoopLogger clientLog,
                         long logStreamId)

Creates input stream.

Parameters:

delegate - Server stream delegate.

limit - Read limit.

bufSize - Buffer size.

log - Log.

clientLog - Client logger.

Method Detail

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(@NotNull
       byte[] b,
       int off,
       int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readLimit)

Overrides:

mark in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public int read(long position,
       byte[] buf,
       int off,
       int len)
         throws IOException

Specified by:

read in interface org.apache.hadoop.fs.PositionedReadable

Throws:

IOException

readFully

public void readFully(long position,
             byte[] buf,
             int off,
             int len)
               throws IOException

Specified by:

readFully in interface org.apache.hadoop.fs.PositionedReadable

Throws:

IOException

readFully

public void readFully(long position,
             byte[] buf)
               throws IOException

Specified by:

readFully in interface org.apache.hadoop.fs.PositionedReadable

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in interface org.apache.hadoop.fs.Seekable

Throws:

IOException

getPos

public long getPos()

Specified by:

getPos in interface org.apache.hadoop.fs.Seekable

seekToNewSource

public boolean seekToNewSource(long targetPos)

Specified by:

seekToNewSource in interface org.apache.hadoop.fs.Seekable

onClose

public void onClose()

Callback invoked when the stream is being closed.

Specified by:

onClose in interface GridGgfsHadoopStreamEventListener

onError

public void onError(String errMsg)

Callback invoked when remote error occurs.

Specified by:

onError in interface GridGgfsHadoopStreamEventListener

Parameters:

errMsg - Error message.