org.elasticsearch.index.snapshots.blobstore

Class SlicedInputStream

java.lang.Object

java.io.InputStream

org.elasticsearch.index.snapshots.blobstore.SlicedInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public abstract class SlicedInputStream
extends InputStream

A SlicedInputStream is a logical concatenation one or more input streams. In contrast to the JDKs SequenceInputStream this stream doesn't require the instantiation of all logical sub-streams ahead of time. Instead, openSlice(long) is called if a new slice is required. Each slice is closed once it's been fully consumed or if close is called before.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SlicedInputStream(long numSlices) Creates a new SlicedInputStream

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
void	close()
protected abstract InputStream	openSlice(long slice) Called for each logical slice given a zero based slice ordinal.
int	read()
int	read(byte[] buffer, int offset, int length)

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

SlicedInputStream

protected SlicedInputStream(long numSlices)

Creates a new SlicedInputStream

Parameters:

numSlices - the number of slices to consume

Method Detail

openSlice

protected abstract InputStream openSlice(long slice)
                                  throws IOException

Called for each logical slice given a zero based slice ordinal.

Throws:

IOException

read

public final int read()
               throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public final int read(byte[] buffer,
       int offset,
       int length)
               throws IOException

Overrides:

read in class InputStream

Throws:

IOException

close

public final void close()
                 throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

available

public final int available()
                    throws IOException

Overrides:

available in class InputStream

Throws:

IOException