alluxio.underfs.cephfs

Class CephInputStream

java.lang.Object

java.io.InputStream

alluxio.underfs.cephfs.CephInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

@NotThreadSafe
public final class CephInputStream
extends java.io.InputStream

A stream for reading a file from CephFS.

Constructor Summary

Constructors

Constructor and Description
CephInputStream(com.ceph.fs.CephMount mount, int fh, long flength) Create a new CephInputStream.

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
long	getPos() Gets the current position of the stream.
int	read()
int	read(byte[] buf, int off, int len)
void	seek(long targetPos) Seek.
long	skip(long n)

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

CephInputStream

public CephInputStream(com.ceph.fs.CephMount mount,
                       int fh,
                       long flength)

Create a new CephInputStream.

Parameters:

mount - CephFileSystem mount

fh - The filehandle provided by Ceph to reference

flength - The current length of the file. If the length changes you will need to close and re-open it to access the new data

Method Detail

getPos

public long getPos()
            throws java.io.IOException

Gets the current position of the stream.

Returns:

current positon of the stream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

seek

public void seek(long targetPos)
          throws java.io.IOException

Seek.

Parameters:

targetPos - Position

Throws:

java.io.IOException - throws

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buf,
                int off,
                int len)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException