alluxio.underfs.gcs

Class GCSOutputStream

java.lang.Object

java.io.OutputStream

alluxio.underfs.gcs.GCSOutputStream

All Implemented Interfaces:

ContentHashable, Closeable, Flushable, AutoCloseable

@NotThreadSafe
public final class GCSOutputStream
extends OutputStream
implements ContentHashable

A stream for writing a file into GCS. The data will be persisted to a temporary directory on the local disk and copied as a complete file when the close() method is called.

Constructor Summary

Constructors

Constructor and Description
GCSOutputStream(String bucketName, String key, org.jets3t.service.impl.rest.httpclient.GoogleStorageService client, List<String> tmpDirs) Constructs a new stream for writing a file.

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
Optional<String>	getContentHash()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.lang.Object

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

Constructor Detail

GCSOutputStream

public GCSOutputStream(String bucketName,
                       String key,
                       org.jets3t.service.impl.rest.httpclient.GoogleStorageService client,
                       List<String> tmpDirs)
                throws IOException

Constructs a new stream for writing a file.

Parameters:

bucketName - the name of the bucket

key - the key of the file

client - the JetS3t client

tmpDirs - a list of temporary directories

Throws:

IOException

Method Detail

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class OutputStream

Throws:

IOException

getContentHash

public Optional<String> getContentHash()

Specified by:

getContentHash in interface ContentHashable

Returns:

the content hash of the file written to the UFS if available after the stream has been closed