Package org.dspace.storage.bitstore

Class S3BitStoreService.S3LazyInputStream

java.lang.Object

java.io.InputStream

org.dspace.storage.bitstore.S3BitStoreService.S3LazyInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

S3BitStoreService

public class S3BitStoreService.S3LazyInputStream
extends InputStream

This inner class represent an InputStream that uses temporary files to represent chunk of the object downloaded from S3. When the input stream is read the class look first to the current chunk and download a new one once if the current one as been fully read. The class is responsible to close a chunk as soon as a new one is retrieved, the last chunk is closed when the input stream itself is closed or the last byte is read (the first of the two)

Constructor Summary

Constructors

Constructor	Description
S3LazyInputStream(String objectKey, long chunkMaxSize, long fileSize)

Method Summary

Modifier and Type	Method	Description
void	close()
int	read()

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, read, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

S3LazyInputStream

public S3LazyInputStream(String objectKey,
 long chunkMaxSize,
 long fileSize)
                  throws IOException

Throws:

IOException

Method Details

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException